CN208889304U - Shield lower Systems for optical inspection and electronic equipment - Google Patents
Shield lower Systems for optical inspection and electronic equipment Download PDFInfo
- Publication number
- CN208889304U CN208889304U CN201821512767.2U CN201821512767U CN208889304U CN 208889304 U CN208889304 U CN 208889304U CN 201821512767 U CN201821512767 U CN 201821512767U CN 208889304 U CN208889304 U CN 208889304U
- Authority
- CN
- China
- Prior art keywords
- light
- systems
- screen
- mould group
- optical inspection
- 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
- Liquid Crystal (AREA)
Abstract
This disclosure relates to semiconductor field of display technology, Systems for optical inspection and electronic equipment under a kind of screen are disclosed.Systems for optical inspection includes: display screen under the screen comprising display module and backlight module, backlight module include OLED mould group, and the light-emitting surface of OLED mould group is towards display module, for providing visible light to display module so that display module shows picture；Optical sensor is arranged below OLED mould group；Light source, for issuing excitation light to the target object above display screen, excitation light is in target object surface generation reflection and forms reflected light or enters inside target object and form transmitted light from bottom outlet, wherein reflected light and transmitted light return to display screen and pass through OLED mould group, and are received by optical sensor below to carry out shielding lower optical detection.The embodiment of the present disclosure realizes the function of detection optical signal below LCD screen display area, while also achieving the close function of judgment object.
Description
Technical field
This disclosure relates to semiconductor field of display technology, in particular to Systems for optical inspection and electronic equipment under a kind of screen.
Background technique
The fingerprint recognition skill used with the progress of science and technology, smart phone, tablet computer and other electronic equipments
Art gradually develops from traditional physical capacitors formula fingerprinting scheme to screen fingerprinting scheme, and screen fingerprinting scheme can
To provide higher screen accounting, while more comfortable experience is brought to user.
It realizes that the technology of detection finger print information is only useful in OLED screen curtain below current screen, and LCD screen can not be applied to
Curtain.Specifically, since liquid crystal can only change the direction of input light without shining, LCD screen needs backlight module
Light source is provided, i.e. LCD screen generally comprises liquid crystal module and backlight module.Backlight module generally includes point light source and multilayer difference
The laminated material of function, laminated material include reflectance coating (also known as mirror film), light guide plate, even smooth film (also known as diffusion barrier) and prism
Film (also known as brightness enhancement film), wherein even smooth film and prism film all at least have one layer.The purpose of these material stack combinations is to make one
A or multiple point light sources form area source, while improving light emission rate, and LCD screen is enabled to show that picture seems that brightness is equal
It is even.
However, if optical sensor setting is realized optical detection under screen below LCD screen, due to backlight mould
The reflectance coating meeting reflection light of group, and remaining other laminated materials, such as light guide plate, even smooth film and prism film can break up light
Line, especially even smooth film can play the role of atomization, therefore entire backlight module is the equal of lighttight.When finger or its
When his object is located above LCD screen, the light reflected from finger or other body surfaces can not pass through backlight module and in LCD
It is imaged on optical sensor below screen, therefore is not available optical sensor and detects LCD below LCD screen display area
The finger print information of finger above screen or the characteristic information of other objects.
Utility model content
For the problems in background technique, the disclosure is designed to provide under a kind of screen that can be adapted for LCD screen
Systems for optical inspection；Another object of the present disclosure is to provide a kind of electronics using Systems for optical inspection under the screen and sets
It is standby.
One embodiment of the disclosure provides Systems for optical inspection under a kind of screen, and Systems for optical inspection includes under the screen
Show screen, optical sensor and light source；
The display screen includes display module and backlight module, and the backlight module is arranged under the display module
Side, the backlight module include OLED mould group, and the light-emitting surface of the OLED mould group is towards the display module, for showing to described
Show that mould group provides visible light so that the display module shows picture；
The optical sensor is arranged below the OLED mould group；
The light source is used to issue excitation light to the target object above the display screen, and the excitation light is in the mesh
Mark body surface occurs to reflect and formed reflected light or enters inside the target object and form transmitted light from bottom outlet,
Wherein the reflected light and the transmitted light return to the display screen and pass through the OLED mould group, and by light below
Sensor is learned to receive to carry out shielding lower optical detection.
A kind of optional implementation of Systems for optical inspection, the backlight module further include under the screen provided as the disclosure
Reflectance coating, the reflectance coating are fitted in the bottom surface of the OLED mould group, and the bottom surface is the light-emitting surface phase with the OLED mould group
The surface deviated from.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the reflectance coating are used for institute
The visible reflectance of OLED mould group sending is stated to the display module, and the reflected light and the transmitted light are transmitted to institute
State the optical sensor below OLED mould group.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the excitation that the light source issues
Light is the non-visible light with specific wavelength, wherein the wavelength of the non-visible light be located at the reflectance coating penetrate wave-length coverage
Within.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the light source are infrared light
Source, and the reflectance coating has albedo to visible light with penetrability to infrared light.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the display screen are LCD
Screen, and the display module is liquid crystal module.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the light source are arranged described
Below backlight module, and it is arranged adjacent to the optical sensor.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, optical detection system under the screen
System further includes that transparent cover plate square on the display screen is arranged, and the transparent cover plate includes being covered on the display screen
The lower section of the extension is arranged in main part and the extension extended from the main part edge, the light source.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, optical detection system under the screen
System further includes coating, and the coating is arranged between the transparent cover plate and the light source, for transmiting the light source sending
Excitation light, and the visible light that the OLED mould group issues is isolated.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the excitation that the light source issues
The wavelength of light is different from the wavelength for the visible light that the backlight module provides, and the wavelength of the excitation light and the optical sensing
The operation wavelength of device is corresponding.
A kind of optional implementation of Systems for optical inspection under the screen provided as the disclosure, the optical sensor are light
Fingerprint sensor is learned, when the target object is user's finger, the optical fingerprint sensor is for receiving across described
The reflected light and transmitted light of OLED mould group, and obtain according to the reflected light and the transmitted light fingerprint image of the finger.
Another embodiment of the disclosure provides a kind of electronic equipment, and the electronic equipment includes under screen as described above
Systems for optical inspection.
As a kind of optional implementation for the electronic equipment that the disclosure provides, the electronic equipment further includes shell, institute
It states the lower Systems for optical inspection of screen and is at least partially disposed in the interior of shell.
Another embodiment of the disclosure provides a kind of object proximity detection method, applies and sets in electronics as described above
Standby, the object proximity detection method includes:
Obtain working condition locating for current electronic device；
Judge whether presently described working condition is predetermined work state, if so, specific wavelength under detection current environment
Non-visible light ambient brightness value, wherein under the wavelength of the non-visible light and the screen light source of Systems for optical inspection hair
Optical wavelength is corresponding, otherwise executes other operations；
Detect the intrinsic brilliance value of the non-visible light of the specific wavelength under the light source open state；
According to the intrinsic brilliance value and the ambient brightness value, connecing for current goal object and the electronic equipment is judged
Nearly situation.
As a kind of optional implementation for the object proximity detection method that the disclosure provides, under the detection current environment
The ambient brightness value of the non-visible light of specific wavelength includes:
Judge whether the light source of Systems for optical inspection under presently described screen is in close state, if at presently described light source
In open state, the light source is closed；
When the light source is in close state, brightness detection is carried out using the optical sensor, and obtain the spy
The ambient brightness value of the long non-visible light of standing wave.
As a kind of optional implementation for the object proximity detection method that the disclosure provides, the detection is in the light source
The intrinsic brilliance value of the non-visible light of the specific wavelength includes: under open state
Square target object surface occurs to reflect and forms reflection the non-visible light that the light source issues on the display screen
Light enters inside the target object and forms transmitted light from bottom outlet, and the reflected light and the transmitted light return to institute
It states the display screen for shielding lower Systems for optical inspection and passes through OLED mould group；
The optical sensor receives the reflected light and the transmitted light across the OLED mould group, and according to the reflection
The intrinsic brilliance value of the non-visible light of light and the transmission presently described specific wavelength of light detection.
As a kind of optional implementation for the object proximity detection method that the disclosure provides, according to the intrinsic brilliance value
With the ambient brightness value, judge current goal object and the electronic equipment includes: close to situation
Calculate the difference of the intrinsic brilliance value and the ambient brightness value；
Judge whether the difference is greater than the threshold value of setting, if so, determining the target object and the electronic equipment
The distance between be less than predetermined value.
A kind of optional implementation as the object proximity detection method that the disclosure provides, further includes:
When being less than predetermined value at a distance from the target object is between the electronic equipment, the electronic equipment is utilized
Processor executes first event.
As a kind of optional implementation for the object proximity detection method that the disclosure provides, the scheduled working condition
For talking state, and the first event includes controlling the display screen of the electronic equipment to be in breath screen state.
A kind of optional implementation as the object proximity detection method that the disclosure provides, further includes:
When being more than predetermined value at a distance from the target object is between the electronic equipment, the electronic equipment is utilized
Processor executes second event, and the second event includes the bright screen state of display screen maintenance for controlling the electronic equipment.
The disclosure has the advantages that
Systems for optical inspection and electronic equipment under the screen that the disclosure provides, wherein Systems for optical inspection includes under the screen
Show screen, optical sensor and light source；The display screen includes display module and backlight module, and the backlight module is set
It sets below the display module, the backlight module includes OLED mould group, and the light-emitting surface of the OLED mould group is shown towards described
Show mould group, for providing visible light to the display module so that the display module shows picture；The optical sensor is set
It sets below the OLED mould group；The light source is used to issue excitation light to the target object above the display screen, described
Excitation light occurs to reflect and formed reflected light or enter inside the target object and from bottom in the target object surface
Outgoing forms transmitted light, wherein the reflected light and the transmitted light return to the display screen and pass through the OLED mould group,
And it is received by optical sensor below to carry out shielding lower optical detection.The embodiment of the present disclosure realizes LCD screen and shows
The function of detection optical signal, increases the visible light light emission rate of OLED mould group, while also achieving judgment object and connecing below region
Close function.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structural schematic diagram of Systems for optical inspection under the screen according to one embodiment of the disclosure；
Fig. 2 is the structural schematic diagram of Systems for optical inspection under screen according to another embodiment of the present disclosure；
Fig. 3 is a kind of structural representation of embodiment of backlight module of Systems for optical inspection under the screen provided suitable for the disclosure
Figure；
Fig. 4 is the structural schematic diagram of the first specific implementation of backlight module shown in Fig. 3；
Fig. 5 is the structural schematic diagram of second of specific implementation of backlight module shown in Fig. 3；
Fig. 6 is the optical detection principle schematic diagram of Systems for optical inspection under screen shown in FIG. 1；
Fig. 7 is the flow chart according to the object proximity detection method of one embodiment of the disclosure.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with attached drawing to the disclosure
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the disclosure
In, many technical details are proposed in order to make reader more fully understand the disclosure.But even if without these technical details and
Based on the various changes and modifications of following embodiment, disclosure technical solution claimed also may be implemented.
Fig. 1 is the structural schematic diagram of Systems for optical inspection under the screen according to one embodiment of the disclosure.As shown in Figure 1,
Systems for optical inspection includes: transparent cover plate 10, liquid crystal module 20, backlight module 30, optical sensor 40 and light source under the screen
50.Liquid crystal module 20 is arranged below transparent cover plate 10；Backlight module 30 is arranged below liquid crystal module 20.20 He of liquid crystal module
The setting that is superimposed with each other of backlight module 30 forms LCD screen 90.Optical sensor 40 is arranged below backlight module 30, such as specifically
The predeterminated position below backlight module 30 is arranged in ground, and its optical detection area is at least partially disposed at the display of LCD screen 90
Below region.The lower section of backlight module 30 is arranged in light source 50, and adjacent to optical sensor 40.
In the present embodiment, 10 material of transparent cover plate is transparent and resistance to stress ability is strong, can protect LCD screen 90, such as its
It can be glass cover-plate or sapphire cover board.Liquid crystal module 20 belongs to display component, but itself cannot shine, and need backlight
Mould group 30 provides light source.It is that liquid crystal module 20 provides a uniform visible smooth surface light that backlight module 30, which can issue visible light,
Source, so that LCD screen 90 can show picture；In the present embodiment, backlight module 30 can be made by optical design its
While providing visible light source for liquid crystal module 20, to the non-visible light of specific band transmitance with higher.
Optical sensor 40 can be such as cmos image sensor, ccd image sensor or other kinds of optics
Sensor is arranged below backlight module 30, for detecting the mesh of 90 top of LCD screen by way of shielding lower optical detection
Mark the characteristic information of object.For example, if above-mentioned target object be close or pressing in LCD screen 90, (or its surface is transparent
Cover board 10) finger or other human bodies when, optical sensor 40 can be used for detecting above-mentioned finger finger print information or
Person's other biological characteristic information (such as heart rate, blood oxygen concentration etc.), also can detecte other optics of other above-mentioned human bodies
Information (such as the distance between other above-mentioned human bodies and LCD screen 90 or relative position information etc.).
Light source 50 can be the light source different from the emission wavelength of backlight module 30, and can be optical sensor 40
To shield lower optical detection and excitation light is provided, operation wavelength of the wavelength of above-mentioned excitation light specifically with optical sensor 40 is corresponding, than
Such as, what the operation wavelength of the wavelength and optical sensor 40 of above-mentioned excitation light can be particularly located at backlight module 30 penetrates wavelength model
It encloses within (wave-length coverage of the non-visible light of the i.e. above-mentioned specific band that can penetrate backlight module 30).As a kind of optional
Embodiment, light source 50 can be infrared light supply, such as infrared light-emitting diode (LED), can provide infrared light as light
Learn the excitation light of sensor 40.
Fig. 2 is the structural schematic diagram of Systems for optical inspection under screen according to another embodiment of the present disclosure.It is different from Fig. 1
Place is, in embodiment shown in Fig. 2, light source 50 and LCD screen 90 are disposed side by side on 10 lower section of transparent cover plate.For example, thoroughly
Bright cover board 10 goes back phase other than including the main part for the LCD screen 90 that covering is formed by liquid crystal module 20 and backlight module 30
There is an extension compared with LCD screen 90, above-mentioned extension can be located at the electronics under the screen where Systems for optical inspection
The fringe region of equipment.Wherein, light source 50 and LCD screen 90 are arranged side by side at main part and the extension of transparent cover plate 10 respectively
The lower section in portion.Also, there is certain gap between light source 50 and LCD screen 90, optionally, light source 50 and LCD screen 90 it
Between gap can also fill light screening material or setting other component.
Meanwhile coating 60 is also provided between transparent cover plate 10 and light source 50.In the present embodiment, coating 60 can be with
The region for being used to be arranged light source 50 of coating 10 lower surface of transparent cover plate in advance can penetrate non-visible light, such as above-mentioned light
Visible light can also be isolated in the non-visible light for the specific band that source 50 issues, i.e. coating 60 cannot be through visible light to prevent from using
Family can see following light source 50 by transparent cover plate 10.
As previously described, the backlight module of usual LCD screen is using shapes such as reflectance coating, light guide plate, even smooth film and prism films
At laminated construction area source is provided, the excitation light and above-mentioned excitation that cannot be issued through the light source below backlight module
The light square reflected detection light of target object surface on the lcd screen, thus can not support the optics below by LCD screen
Sensor carries out shielding optical information of the lower optical detection to obtain target object.Present embodiments provide a kind of novel backlight mould
Group design scheme, this scheme are suitable for optical detection under the screen of LCD screen.
Fig. 3 is the backlight module that can be adapted for Systems for optical inspection under screen shown in fig. 1 or fig. 2 that the disclosure provides
A kind of structural schematic diagram of embodiment.As shown in figure 3, the backlight module includes: reflectance coating 310 and OLED mould group 320, OLED
Mould group 320 is bonded to each other with reflectance coating 310, for example reflectance coating 310 can be fitted in the bottom surface of OLED mould group 320 (i.e. and OLED
The surface that the light-emitting surface of mould group is away from each other), and the light-emitting surface of OLED mould group 320 can be towards liquid crystal module shown in fig. 1 or fig. 2
20, and optical sensor 40 can be set on surface of the reflectance coating 310 far from OLED mould group 320.Reflectance coating 310 can reflect
Visible light, while the non-visible light of specific band can also be penetrated.OLED mould group 320 is used to through its light-emitting surface be above-mentioned liquid crystal
Mould group 20 provides a uniform visible light area source, and the visible light away from above-mentioned light-emitting surface that OLED mould group 320 issues can
OLED mould group 320 is returned to be reflected by reflectance coating 310, and is transmitted away from the light-emitting surface of OLED mould group 320, on the one hand mention
The whole light extraction efficiency of high backlight module 30, the visible light on the other hand preventing OLED mould group 320 from issuing enter the light of its bottom surface
It learns sensor 40 and is interfered to lower optical detection is shielded.
By taking structure shown in FIG. 1 as an example, when finger or other target objects pressing above transparent cover plate 10 when, due to light
The excitation light that source 50 issues be specific wavelength non-visible light (wavelength of light source 50 be located at reflectance coating 310 penetrate wave-length coverage
Within), thus above-mentioned excitation light can sequentially pass through reflectance coating 310, OLED mould group 320, liquid crystal module 20 and transparent cover plate
10, it is irradiated on finger or other target objects.Wherein, a part of light is directly reflected simultaneously by finger or other target object surfaces
Reflected light is formed, another part light transmits shape from the bottom of finger or other objects again after then entering finger or other objects
At transmitted light, above-mentioned reflected light and transmitted light due to remain as can penetrate backlight module 30 above-mentioned specific band it is non-visible
Light, therefore transparent cover plate 10, liquid crystal module 20, OLED mould group 320 and reflectance coating 310 can be sequentially passed through and enter optics biography later
Sensor 40, optical sensor 40, which can carry out the detection of optical information namely the technical solution of the present embodiment, to be realized under screen
The function of optical detection.
Fig. 4 is the structural schematic diagram of the first specific implementation of backlight module shown in Fig. 3, the backlight as shown in the figure
Mould group includes: reflectance coating 310 and OLED mould group 320, and OLED mould group 320 specifically includes again: encapsulation 3201, has cathode 3202
Machine functional layer 3203, anode 3204 and substrate 3205.Reflectance coating 310 can reflect visible light, while can also penetrate certain wave
The non-visible light of section.OLED mould group 320 and reflectance coating 310 are bonded to each other, wherein the one side for encapsulating 3201 is reflectance coating 310, separately
It is on one side cathode 3202；The one side of cathode 3202 is encapsulation 3201, and another side is organic function layer 3203；Organic function layer 3203
One side be cathode 3202, another side be anode 3204；The one side of anode 3204 is organic function layer 3203, and another side is substrate
3205；The one side of substrate 3205 is anode 3204, and another side is the light-emitting surface of backlight module 30 and is arranged towards liquid crystal module 20,
Namely the light direction of backlight module 30 is the direction that organic function layer 3203 is directed toward substrate 3205.
In the present embodiment, encapsulation 3201 can be the materials such as glass, film, can be used to isolating oxygen gas and water with transmitted light
Vapour and dust etc., the service life of Lai Tigao OLED mould group 320.Substrate 3205 can be the materials such as glass, polymer, Ke Yitou
Light is crossed, for supporting OLED mould group 320.Cathode 3202 and anode 3204 can be transparent electrode, and optionally, transparent electrode can
To be transparent metal electrode or semi-transparent metals electrode etc..Organic function layer 3203 can be organic molecule or organic polymer
Object, can be with transmitted light.Thus OLED mould group 320 is whole can be with transmitted light.
The luminous mechanism of OLED mould group 320 are as follows: driving voltage is applied to cathode 3202 and anode 3204 by driving circuit
Later, the electronics of cathode 3202 will flow to anode 3204 via organic function layer 3203, and the hole of anode 3204 is via having
Machine functional layer 3203 flows to cathode 3202, when the electronics and the hole are when organic function layer 3203 meets, in Coulomb force
Under the action of combine, generate exciton.The exciton is transferred energy under electric field action in organic function layer 3203
Luminescent organic molecule, the luminescent organic molecule will be from ground state transitions to excitation state after absorbing energy.Due to being in excitation state
The luminescent organic molecule be it is unstable, need to return to stable ground state by spontaneous radiation, energy can be with during this
The mode of photon releases, thus OLED mould group 320 can issue visible light, using the backlight as liquid crystal module 20.
Fig. 5 is the structural schematic diagram of second of specific implementation of backlight module shown in Fig. 3, with Fig. 4 difference
It is that OLED mould group 320 is different from the binding face of reflectance coating 310.Specifically, encapsulating 3201 one side in Fig. 4 is reflectance coating
310, another side is cathode 3202；The one side of substrate 3205 is anode 3204, and another side is the light-emitting surface of backlight module 30 and court
It is arranged to liquid crystal module 20.And it is the light-emitting surface of backlight module 30 and towards liquid crystal module 20 that 3201 one side is encapsulated in Fig. 5
(namely the light direction of backlight module 30 is the direction that organic function layer 3203 is directed toward encapsulation 3201) is set, and another side is cathode
3202；The one side of substrate 3205 is anode 3204, and another side is reflectance coating 310.
Fig. 6 is the optical detection principle schematic diagram of Systems for optical inspection under screen shown in FIG. 1, using target object as finger 80
For, Systems for optical inspection can be used to detect pressing in the finger print information of the finger 80 on its surface under above-mentioned screen.
Specifically, light source 50 issues excitation light 70, excitation light 70 is the non-visible light of above-mentioned specific wavelength, with optics
The operation wavelength of sensor 40 is consistent.Excitation light 70 sequentially passes through backlight module 30, liquid crystal module 20, transparent cover plate 10 and reaches hand
Refer to 80.A part of excitation light 70 forms reflected light 71 by 80 surface reflection of finger at this time；Another part enters in finger 80
Portion forms transmitted light 72 after a series of paths are pierced by from the bottom of finger 80.Reflected light 71 and transmitted light 72 successively pass through again
By reaching (the work of optical sensor 40 here of optical sensor 40 after transparent cover plate 10, liquid crystal module 20 and backlight module 30
Wavelength is identical as the wavelength of reflected light 71 and transmitted light 72, and optical sensor 40 can be optical fingerprint sensor).Optics passes
After sensor 40 detects optical signalling, processor (in figure and being not drawn into) processing is sent to, the processor is according to obtained light
Learn signal, the fingerprint image of finger 80 is recovered, then with authenticated fingerprint in Systems for optical inspection database under the screen
Image compares to carry out identification.
It should be understood that optical finger print detection is that one kind of Systems for optical inspection under above-mentioned screen is specific under screen shown in fig. 6
Using；In other embodiments, Systems for optical inspection can also be used to carry out the optical detections of other target objects under above-mentioned screen.
For example, when under above-mentioned screen Systems for optical inspection apply in the electronic equipments such as smart phone or tablet computer, can carry out
Object proximity detection.Specifically, based on Systems for optical inspection under above-mentioned screen, the disclosure also provides a kind of object proximity detection side
Method.
Fig. 7 is according to the flow chart of the object proximity detection method of one embodiment of the disclosure, as shown in fig. 7, the party
Method includes:
Step S101 obtains working condition locating for current electronic device.
Step S102 judges whether presently described working condition is predetermined work state, if so, thening follow the steps
S103, it is no to then follow the steps S108.
In this step, above-mentioned predetermined work state can be defined according to the actual situation, for example, as a kind of implementation
Example, the predetermined work state can be talking state, and in this case, the electronic equipment can enable the lower optics inspection of screen
Examining system carries out object proximity detection, is controlled to detect the distance between user's head and electronic equipment, and accordingly.
Step S108 is to execute other operations, for example respond user's control and execute corresponding operation.
Step S103 detects the ambient brightness value of the non-visible light of specific wavelength under current environment, and the environment is bright
Angle value is denoted as L1, wherein the wavelength of the non-visible light is opposite with the emission wavelength of light source 50 of Systems for optical inspection under the screen
It answers.
In a particular embodiment, the non-visible light of above-mentioned specific wavelength can be specifically and Systems for optical inspection under the screen
Optical sensor 40 the corresponding non-visible light of operation wavelength, such as infrared light.
In step s 103, before detecting above-mentioned ambient brightness value L1, need to judge Systems for optical inspection under the screen
Light source 50 whether be in close state, if current light source 50 is in the open state, under the screen Systems for optical inspection need
Light source 50 is closed, is prepared to detect presently described ambient brightness value L1.When light source 50 is in close state, optics is utilized
Sensor 40 carries out brightness detection, and obtains ambient brightness value L1.
Step S104 detects the intrinsic brilliance value of the non-visible light of the specific wavelength under 50 open state of light source, and
The intrinsic brilliance value is denoted as L2；
The non-visible light of above-mentioned specific wavelength can be issued under 50 open state of light source as excitation light, the excitation light passes through
After backlight module 30, liquid crystal module 20 and transparent cover plate 10, it is emitted from the surface of transparent cover plate 10.When object 80 is close to described
When electronic equipment, the excitation light that light source 50 issues can occur to reflect and formed reflected light or enter object on 80 surface of object
The inside of body 80 simultaneously forms transmitted light from bottom outlet, and the wavelength of the reflected light and the transmitted light is opposite with the excitation light
It answers, i.e., the described reflected light and the transmitted light are similarly the non-visible light of above-mentioned specific wavelength.Therefore, it is returned from object 80 anti-
It penetrates light and transmitted light sequentially passes through transparent cover plate 10, liquid crystal module 20 and backlight module 30 and enters optical sensor 40 later,
Optical sensor 40 can detect the intrinsic brilliance value L2 of the non-visible light of the specific wavelength under 50 open state of light source.
Wherein, object 80 is closer to the electronic equipment, and the light intensity of the reflected light and the transmitted light will be stronger, light
The intrinsic brilliance value for learning the non-visible light for the above-mentioned specific wavelength that sensor 40 detects will be bigger.When object 80 moves closer to
When the electronic equipment, above-mentioned intrinsic brilliance value L2 is gradually increased, when object 80 reaches a certain at a distance from the electronic equipment
Apart from when, the intrinsic brilliance value L2 under 50 open state of light source is greater than above-mentioned ambient brightness value L1；And object 80 is closer to institute
Electronic equipment is stated, intrinsic brilliance value L2 is more greater than ambient brightness value L1.It therefore, can be according to above-mentioned intrinsic brilliance value L2 and ring
Border brightness value L 1, judge current object 80 and the electronic equipment close to situation.
Step S105, judges whether the difference (L2-L1) of the intrinsic brilliance value L2 and ambient brightness value L1 is greater than
The threshold value of setting；If so, step S106 is executed, it is no to then follow the steps S107.
Specifically, this threshold value passes through the distance actually debugged and determines, when above-mentioned intrinsic brilliance value L2 and ambient brightness value
The difference (L2-L1) of L1 is greater than the threshold value, so that it may determine the distance between object 80 and the electronic equipment already less than institute
State predetermined value.Such as mobile phone it is on call when, if mobile phone and head distance are less than certain distance, institute can be passed through at this time
The processor triggering breath screen of LCD screen 90 of electronic equipment is stated, to achieve the purpose that power saving.If above-mentioned difference (L2-L1) is less than
The threshold value then means that object 80 does not block mobile phone, therefore can maintain bright screen by the processor or execute it
He operates.
Step S106, processor execute first event；The first event can be control LCD screen 90 and be in breath screen shape
State is also possible to other operations.
Step S107, processor execute second event；The second event can be control LCD screen 90 and maintain bright screen shape
State is also possible to control other function component and executes other operations.
Although present disclosure includes many details, these are not necessarily to be construed as to any utility model or require to protect
The limitation of the range of shield, but be interpreted to can be retouching for feature specific to the specific embodiment to specific utility model
It states.Certain features described in this patent document can also combine reality in a single embodiment in the context of separate embodiments
It is existing.On the contrary, the various features described in the context of single embodiment can also be implemented separately in various embodiments or with
Any suitable sub-portfolio form is realized.It works in certain combinations moreover, although feature can be described above as, and
It is even initially so claimed, but in some cases can be from from claimed combined one or more features
It is deleted in combination, and claimed combination can be related to the deformation of sub-portfolio or sub-portfolio.
Similarly, although describing operation in the accompanying drawings with particular order, this should not be construed as requiring these operations
The particular order shown in successively executes in sequence, or require execute it is all shown in operate, to realize desired knot
Fruit.Moreover, the various individual system units in the embodiment described in this patent document should not be construed as in all implementations
This separation is needed in example.
It will be understood by those skilled in the art that the various embodiments described above are the specific embodiments of realization the application, and
In practical applications, can to it, various changes can be made in the form and details, without departing from scope of the present application.
Claims (13)
1. Systems for optical inspection under a kind of screen, which is characterized in that including display screen, optical sensor and light source；
The display screen includes display module and backlight module, and the backlight module is arranged below the display module, institute
Stating backlight module includes OLED mould group, and the light-emitting surface of the OLED mould group is used for towards the display module to the display mould
Group provides visible light so that the display module shows picture；
The optical sensor is arranged below the OLED mould group；
The light source is used to issue excitation light to the target object above the display screen, and the excitation light is in the object
Body surface face occurs to reflect and formed reflected light or enters inside the target object and form transmitted light from bottom outlet, wherein
The reflected light and the transmitted light return to the display screen and pass through the OLED mould group, and are passed by optics below
Sensor is received to carry out shielding lower optical detection.
2. Systems for optical inspection under screen according to claim 1, which is characterized in that the backlight module further includes reflection
Film, the reflectance coating are fitted in the bottom surface of the OLED mould group, and the bottom surface is to be away from each other with the light-emitting surface of the OLED mould group
Surface.
3. Systems for optical inspection under screen according to claim 2, which is characterized in that the reflectance coating is used for the OLED
The reflected light and the transmitted light are transmitted to the OLED to the display module by the visible reflectance that mould group issues
Optical sensor below mould group.
4. Systems for optical inspection under screen according to claim 3, which is characterized in that the excitation light that the light source issues is tool
Have the non-visible light of specific wavelength, wherein the wavelength of the non-visible light be located at the reflectance coating penetrate wavelength within the scope of.
5. Systems for optical inspection under screen according to claim 4, which is characterized in that the light source is infrared light supply, and institute
Stating reflectance coating has albedo to visible light with penetrability to infrared light.
6. Systems for optical inspection under screen according to claim 1, which is characterized in that the display screen is LCD screen, and
The display module is liquid crystal module.
7. Systems for optical inspection under screen according to claim 1, which is characterized in that the light source is arranged in the backlight mould
Group lower section, and be arranged adjacent to the optical sensor.
8. Systems for optical inspection under screen according to claim 1, which is characterized in that Systems for optical inspection also wraps under the screen
It includes and transparent cover plate square on the display screen is set, the transparent cover plate includes the main part for being covered on the display screen
And the lower section of the extension is arranged in the extension extended from the main part edge, the light source.
9. Systems for optical inspection under screen according to claim 8, which is characterized in that Systems for optical inspection also wraps under the screen
Coating is included, the coating is arranged between the transparent cover plate and the light source, the excitation light issued for transmiting the light source,
And the visible light that the OLED mould group issues is isolated.
10. Systems for optical inspection under screen according to claim 1, which is characterized in that the excitation light that the light source issues
Wavelength is different from the wavelength for the visible light that the backlight module provides, and the wavelength of the excitation light and the optical sensor
Operation wavelength is corresponding.
11. Systems for optical inspection under screen according to claim 1, which is characterized in that the optical sensor refers to for optics
Line sensor, when the target object is user's finger, the optical fingerprint sensor is for receiving across the OLED mould
The reflected light and transmitted light of group, and obtain according to the reflected light and the transmitted light fingerprint image of the finger.
12. a kind of electronic equipment characterized by comprising
Systems for optical inspection under screen according to any one of claim 1 to 11.
13. electronic equipment according to claim 12, which is characterized in that the electronic equipment further includes shell, the screen
Lower Systems for optical inspection is at least partially disposed in the interior of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821512767.2U CN208889304U (en) | 2018-09-17 | 2018-09-17 | Shield lower Systems for optical inspection and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821512767.2U CN208889304U (en) | 2018-09-17 | 2018-09-17 | Shield lower Systems for optical inspection and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208889304U true CN208889304U (en) | 2019-05-21 |
Family
ID=66512470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821512767.2U Active CN208889304U (en) | 2018-09-17 | 2018-09-17 | Shield lower Systems for optical inspection and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208889304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111325100A (en) * | 2020-01-21 | 2020-06-23 | 维沃移动通信有限公司 | Electronic equipment |
| CN116434705A (en) * | 2023-06-12 | 2023-07-14 | 惠科股份有限公司 | Driving circuit, display panel and display device |
-
2018
- 2018-09-17 CN CN201821512767.2U patent/CN208889304U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111325100A (en) * | 2020-01-21 | 2020-06-23 | 维沃移动通信有限公司 | Electronic equipment |
| CN111325100B (en) * | 2020-01-21 | 2024-04-09 | 维沃移动通信有限公司 | Electronic equipment |
| CN116434705A (en) * | 2023-06-12 | 2023-07-14 | 惠科股份有限公司 | Driving circuit, display panel and display device |
| CN116434705B (en) * | 2023-06-12 | 2023-10-24 | 惠科股份有限公司 | Driving circuit, display panel and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109328358A (en) | Shield lower Systems for optical inspection, electronic equipment and its object proximity detection method | |
| US10956547B2 (en) | Biometrics authentication system | |
| CN109416740B (en) | Finger print detection device, method and electronic equipment | |
| US7936983B2 (en) | Imaging device and apparatus installed with the same | |
| WO2018103194A1 (en) | Display module and usage method thereof | |
| CN107798289A (en) | The biometric image sensing system of variable light field | |
| US10169636B2 (en) | Sensor apparatus and mobile terminal | |
| CN108122941A (en) | Organic light-emitting diode (OLED) display screen fingerprint identification device and electronic equipment | |
| CN108846392A (en) | Optical finger print recognition unit and its manufacturing method, display panel and the method for identifying fingerprint | |
| CN109901313A (en) | Detect mould group, backlight module, display device and electronic equipment | |
| CN208889304U (en) | Shield lower Systems for optical inspection and electronic equipment | |
| CN108565279A (en) | A kind of organic light-emitting display device and electronic equipment | |
| CN206946506U (en) | Photoelectric sensing module and electronic installation | |
| US10367114B2 (en) | Biological detection device and processing method of the same | |
| CN107958178A (en) | Photoelectric sensing module and preparation method thereof, electronic device | |
| CN110767739A (en) | Display substrate and display device | |
| CN108493201A (en) | A kind of display panel, its manufacturing method and display device | |
| CN109691069A (en) | Shield lower Systems for optical inspection, electronic equipment and object proximity detection method | |
| CN109063621A (en) | A kind of mobile terminal | |
| CN208654682U (en) | Display screen component and electronic equipment | |
| CN108962958B (en) | Display panel, display device and manufacturing method of display panel | |
| CN107958179A (en) | Photoelectric sensing module and electronic device | |
| CN110163044A (en) | Fingerprint identification device and preparation method thereof, fingerprint identification method and display equipment | |
| CN209496383U (en) | Fingerprint identification device and electronic equipment | |
| CN112800808A (en) | Fingerprint identification method and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |