CN108734073A - A kind of detection device and terminal device - Google Patents
A kind of detection device and terminal device Download PDFInfo
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- CN108734073A CN108734073A CN201710643113.7A CN201710643113A CN108734073A CN 108734073 A CN108734073 A CN 108734073A CN 201710643113 A CN201710643113 A CN 201710643113A CN 108734073 A CN108734073 A CN 108734073A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- Optical Couplings Of Light Guides (AREA)
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Abstract
A kind of detection device and terminal device, the precision for improving optical identification under display screen.One such detection device includes：Luminescence component, for sending out original light；Control assembly, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, it is imaged light to be formed, wherein, the feedback light is when an object comes close to or in contact with the display screen, under the irradiation of the original light, the object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；Imaging sensor, for by receiving the imaging light, being formed for indicating that the object comes close to or in contact with the data of the image of the lines of the one side of the display module.
Description
This application claims being submitted on April 14th, 2017, Patent Office of the People's Republic of China, application No. is 201710245989.6, invention names
This is hereby incorporated by reference in the referred to as priority of the Chinese patent application of " a kind of fingerprint identification method and device ", entire contents
In application.
Technical field
The invention relates to electronic technology field more particularly to a kind of detection device and terminal devices.
Background technology
In recent years, with bio-identification function terminal device progress into people's lives work in, wherein fingerprint because
It is capable of the identity characteristic of only table traveller on a long journey, and receives people's attention, and with the development of terminal device full frameization, the following people is more
The fingerprint identification technology being concerned under the display screen of terminal device.
Currently, the fingerprint identification technology under can be applied to display screen has optical technology, capacitance technology and ultrasonic technology
Deng, wherein optical technology is favored because of good, the at low cost advantage of durability.But for optical technology, since light source can be to
Different directions send out original light, and each of imaging sensor is reached then can cause to be emitted from display screen when there are multiple light sources
It is mutually overlapping between a emergent ray, and then lead to imaging sensor image blur.Such as referring to FIG. 1, in multiple light sources not
It is irradiated in the one side of object through display screen with the original light that light source is sent out, forms reflection light after the reflection of object,
The emergent ray that reflection light in the one side of object at different location is formed through display screen may be radiated at image sensing
At same position on device, since different emergent rays characterizes different finger print informations, when different emergent rays is irradiated to
When at same position, that is, the superposition of different finger print informations, to cause the image blur of imaging sensor.
It can be seen that the identification precision of the optical recognition under display screen is relatively low in the prior art.
Invention content
A kind of detection device of the embodiment of the present application offer and terminal device, the essence for improving the optical identification under display screen
Accuracy.
In a first aspect, the embodiment of the present application provides a kind of detection device, including：Luminescence component, for sending out initial light
Line；
Control assembly, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, to be formed
It is imaged light, wherein the feedback light is when an object comes close to or in contact with the display screen, in the photograph of the original light
It penetrates down, the object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；Imaging sensor, for passing through
The imaging light is received, is formed for indicating that the object comes close to or in contact with the image of the lines of the one side of the display module
Data.
In the embodiment of the present application, the direction of propagation of feedback light is controlled by control assembly, can be eliminated different
The crosstalk generated between feedback light forms imaging light.So that imaging sensor being capable of shape after receiving imaging light
At for indicating the lines more clearly data of image, and then the more accurate lines detection of realization, light under display screen is improved
The other precision of knowledge.
In a possible design, the control assembly includes：Lens array, for converging the feedback light, with
Form the transmitted ray of incident described image sensor；Leaded light component is arranged in the lens array and described image sensor
Between, for eliminating from the crosstalk occurred between the transmitted ray that each lens are emitted in the lens array.
In the embodiment of the present application, it after lens array converges feedback light, is eliminated from lens by leaded light component
The crosstalk occurred between the transmitted ray of each lens outgoing in array, forms imaging light.So that imaging sensor
It can be formed after receiving imaging light for indicating the lines more clearly data of image, and then the more accurate lines of realization
Detection, improves the precision of optical identification under display screen.
In a possible design, the leaded light component includes：The N layers for stacking setting in vertical direction are opaque
Layer, every layer of light non-transmittable layers in the N layers of light non-transmittable layers offer through-hole array, the through-hole battle array that every layer of light non-transmittable layers open up
The position of row is completely superposed, the through-hole array include through every layer of light non-transmittable layers first through hole and the second through-hole, N be
Integer；Wherein, there is partition between the first through hole and second through-hole, with eliminate be emitted from first lens it is saturating
Penetrate light and from the crosstalk occurred between the transmitted ray that second lens are emitted.
In the embodiment of the present application, every layer of light non-transmittable layers can be silicon substrate, can also be the layer with other structures, example
As every layer of light non-transmittable layers include the first sublayer and are vaporized on the second sublayer of the upper surface of the first sublayer；Wherein, first sublayer
Material is the material for having translucency, such as the plastics with translucency or glass, and the material of the second sublayer is that do not have
The material of translucency, such as do not have transparent thin-film, can be metallic film, black polyester film (Polyseter Film,
) or black glue layer PET.
In the embodiment of the present application, through-hole array is opened up in every layer of light non-transmittable layers, then will offer through-hole array
Light non-transmittable layers bond together to form leaded light component.Due to the thinner thickness of every layer of light non-transmittable layers, pressed in this way by laser, mechanical processing
Punching difficulty when print or the modes such as undressed are punched is relatively low, so as to realize volume production.
In a possible design, the N is to being rounded up according to the function acquisition value of duty ratio；Its
In, the inverse of function difference between 1 and the duty ratio of the duty ratio, the duty ratio is in the lens array
The ratio of the diameter of lens and the period of the lens of the lens array.
In the embodiment of the present application, it according to the duty ratio of lens in duty ratio, that is, lens array, determines required impermeable
The number of plies of photosphere.
In a possible design, the leaded light component includes：Light non-transmittable layers, the light non-transmittable layers offer through-hole battle array
Row, the through-hole array include the first through hole and the second through-hole through the light non-transmittable layers；Wherein, the first through hole and institute
Stating has partition between the second through-hole, to eliminate transmitted ray be emitted from first lens and from second lens outgoing
Transmitted ray between the crosstalk that occurs.
In the embodiment of the present application, through-hole array is opened up in light non-transmittable layers, the first through hole in through-hole array and second
There is partition between through-hole, there is light blocking effect, so as to eliminate transmitted ray be emitted from the first lens and from second it is saturating
The crosstalk occurred between the transmitted ray of mirror outgoing.
In a possible design, the thickness of the light non-transmittable layers is less than or equal to from the lens in the lens array
Optical center to the vertical range between described image sensor so that from the first lens of the lens array be emitted transmitted light
Line is emitted to the first area in described image sensor where the projection of the first through hole through the first through hole, from described
The transmitted ray of the second lens outgoing of lens array is emitted to through second through-hole described second in described image sensor
Second area where the projection of through-hole.
In the embodiment of the present application, the thickness that light non-transmittable layers are arranged is less than or equal to from the lens in the lens array
Optical center goes out to avoid the transmitted ray being emitted from the first lens through first through hole to the vertical range between described image sensor
The emergent ray for being mapped to second area and/or being transmitted from the second lens is emitted to first area through the second through-hole, so as into
One step is eliminated from the crosstalk occurred between the transmitted ray that lens transmit.
In a possible design, the aperture of the first through hole is less than or equal to the diameter of first lens, institute
The aperture for stating the second through-hole is less than or equal to the diameter of second lens.
In the embodiment of the present application, the aperture of each through-hole in through-hole array be less than or equal to lens array in it is every
The diameter of the corresponding lens of a through-hole, such as the aperture of first through hole are less than or equal to the diameters of the first lens, the second through-hole
Aperture is less than the diameter equal to the second lens, straight from the top of first through hole to avoid the transmitted ray transmitted from the second lens
Access is mapped in first through hole, and crosstalk occurs between the transmitted ray that is transmitted in first through hole, or is transmitted from the first lens
Transmitted ray be directly incident in the second through-hole from the top of the second through-hole, and between the transmitted ray that is transmitted in the second through-hole
Crosstalk occurs.
In a possible design, the leaded light component is fibre faceplate, and the numerical aperture of the fibre faceplate is less than
Preset value, so that the fibre faceplate receives the transmitted ray in predetermined angle range being emitted from the lens array, to disappear
The transmission being emitted except the transmitted ray being emitted from the first lens of the lens array and from the second lens of the lens array
The crosstalk occurred between light；Wherein, the preset value is the diameter of the lens in the lens array and the lens array
The ratio of the distance between the fibre faceplate.
In the embodiment of the present application, the numerical aperture of fibre faceplate be less than preset value, to ensure fibre faceplate receive from
Transmitted ray within the scope of the predetermined angle of lens array outgoing, and then the string occurred between different transmitted rays can be eliminated
It disturbs.
In a possible design, the luminescence component is the light source being arranged outside the display screen；
The detection device further includes：
Collimator assembly, for control the original light that the different light sources that the luminescence component includes are sent out be radiated at it is described
Different zones in the one side of object.
In the embodiment of the present application, the different light sources that luminescence component includes can also be sent out by collimator assembly first
The range of exposures of beginning light, the further control by leaded light component to feedback light can be eliminated preferably and be sent out between light
Raw crosstalk.
In a possible design, the collimator assembly includes：
Light transmission part and part of being in the light, the light transmission part are arranged between adjacent light-blocking part point, the part of being in the light
For stopping that the original light is irradiated to the pixel electrode of the display screen, to control the original light by the light transmission
Part, the different zones from the one side that the gap between adjacent pixel electrode is irradiated to the object.
In the embodiment of the present application, the part blocking original light that is in the light is irradiated on the pixel electrode of display screen, is limited
The incident angle of original light is reflected back after avoiding original light from being irradiated to the back side of pixel electrode, can not be irradiated to object
In the one side of body, rate is penetrated to improve the irradiation that original light is irradiated in the one side of object.
Second aspect, the embodiment of the present application provide a kind of detection device, which includes control assembly, for controlling
The direction of propagation for the feedback light being emitted from the display screen with translucency, to form imaging light, wherein the feedback light
For when an object comes close to or in contact with the display screen, under the irradiation for the original light that the display screen is sent out, the object
Come close to or in contact with the light that the lines of the one side of the display screen is reflected；Imaging sensor, for by receiving the imaging
Light is formed for indicating that the object comes close to or in contact with the data of the image of the lines of the one side of the display module.
In the embodiment of the present application, the direction of propagation of feedback light is controlled by control assembly, can be eliminated different
The crosstalk generated between feedback light forms imaging light.So that imaging sensor being capable of shape after receiving imaging light
At for indicating the lines more clearly data of image, and then the more accurate lines detection of realization, light under display screen is improved
The other precision of knowledge.
In a possible design, the control assembly includes：Lens array, for converging the feedback light, with
Form the transmitted ray of incident described image sensor；Leaded light component is arranged in the lens array and described image sensor
Between, for eliminating from the crosstalk occurred between the transmitted ray that each lens are emitted in the lens array, described in formation
It is imaged light.
In the embodiment of the present application, it after lens array converges feedback light, is eliminated from lens by leaded light component
The crosstalk occurred between the transmitted ray of each lens outgoing in array, forms imaging light.So that imaging sensor
It can be formed after receiving imaging light for indicating the lines more clearly data of image, and then the more accurate lines of realization
Detection, improves the precision of optical identification under display screen.
In a possible design, the leaded light component includes：The N layers for stacking setting in vertical direction are opaque
Layer, every layer of light non-transmittable layers in the N layers of light non-transmittable layers offer through-hole array, the through-hole battle array that every layer of light non-transmittable layers open up
The position of row is completely superposed, the through-hole array include through every layer of light non-transmittable layers first through hole and the second through-hole, N be
Integer；Wherein, there is partition between the first through hole and second through-hole, with eliminate be emitted from first lens it is saturating
Penetrate light and from the crosstalk occurred between the transmitted ray that second lens are emitted.
In the embodiment of the present application, every layer of light non-transmittable layers can be silicon substrate, can also be the layer with other structures, example
If every layer of light non-transmittable layers include that the second sublayer in the upper surface of the first sublayer is arranged in the first sublayer and fitting；Wherein, the first son
The material of layer is the material for having translucency, such as the plastics with translucency or glass, and the material of the second sublayer is not
Material with translucency, such as do not have transparent thin-film, can be metallic film, black polyester film (Polyseter
Film, PET) or black glue layer.
In the embodiment of the present application, the second sublayer can be vaporized on the upper surface of the first sublayer by way of vapor deposition,
It can be arranged in the upper surface of the first sublayer, be not restricted in the embodiment of the present application by way of mask plate.
In the embodiment of the present application, through-hole array is opened up in every layer of light non-transmittable layers, then will offer through-hole array
Light non-transmittable layers bond together to form leaded light component.Due to the thinner thickness of every layer of light non-transmittable layers, pressed in this way by laser, mechanical processing
Punching difficulty when print or the modes such as undressed are punched is relatively low, so as to realize volume production.
In a possible design, the N is to being rounded up according to the function acquisition value of duty ratio；Its
In, the inverse of function difference between 1 and the duty ratio of the duty ratio, the duty ratio is in the lens array
The ratio of the diameter of lens and the period of the lens of the lens array.
In the embodiment of the present application, it according to the duty ratio of lens in duty ratio, that is, lens array, determines required impermeable
The number of plies of photosphere.
In a possible design, the leaded light component includes：Light non-transmittable layers, the light non-transmittable layers offer through-hole battle array
Row, the through-hole array include the first through hole and the second through-hole through the light non-transmittable layers；Wherein, the first through hole and institute
Stating has partition between the second through-hole, to eliminate transmitted ray be emitted from first lens and from second lens outgoing
Transmitted ray between the crosstalk that occurs.
In the embodiment of the present application, through-hole array is opened up in light non-transmittable layers, the first through hole in through-hole array and second
There is partition between through-hole, there is light blocking effect, so as to eliminate transmitted ray be emitted from the first lens and from second it is saturating
The crosstalk occurred between the transmitted ray of mirror outgoing.
In a possible design, the thickness of the light non-transmittable layers is less than or equal to from the lens in the lens array
Optical center to the vertical range between described image sensor so that from the first lens of the lens array be emitted transmitted light
Line is emitted to the first area in described image sensor where the projection of the first through hole through the first through hole, from described
The transmitted ray of the second lens outgoing of lens array is emitted to through second through-hole described second in described image sensor
Second area where the projection of through-hole.
In the embodiment of the present application, the thickness that light non-transmittable layers are arranged is less than or equal to from the lens in the lens array
Optical center goes out to avoid the transmitted ray being emitted from the first lens through first through hole to the vertical range between described image sensor
The emergent ray for being mapped to second area and/or being transmitted from the second lens is emitted to first area through the second through-hole, so as into
One step is eliminated from the crosstalk occurred between the transmitted ray that lens transmit.
In a possible design, the aperture of the first through hole is less than or equal to the diameter of first lens, institute
The aperture for stating the second through-hole is less than or equal to the diameter of second lens.
In the embodiment of the present application, the aperture of each through-hole in through-hole array be less than or equal to lens array in it is every
The diameter of the corresponding lens of a through-hole, such as the aperture of first through hole are less than or equal to the diameters of the first lens, the second through-hole
Aperture is less than the diameter equal to the second lens, straight from the top of first through hole to avoid the transmitted ray transmitted from the second lens
Access is mapped in first through hole, and crosstalk occurs between the transmitted ray that is transmitted in first through hole, or is transmitted from the first lens
Transmitted ray be directly incident in the second through-hole from the top of the second through-hole, and between the transmitted ray that is transmitted in the second through-hole
Crosstalk occurs.
In a possible design, the leaded light component is fibre faceplate, and the numerical aperture of the fibre faceplate is less than
Preset value, so that the fibre faceplate receives the transmitted ray in predetermined angle range being emitted from the lens array, to disappear
The transmission being emitted except the transmitted ray being emitted from the first lens of the lens array and from the second lens of the lens array
The crosstalk occurred between light；Wherein, the preset value is the diameter of the lens in the lens array and the lens array
The ratio of the distance between the fibre faceplate.
In the embodiment of the present application, the numerical aperture of fibre faceplate be less than preset value, to ensure fibre faceplate receive from
Transmitted ray within the scope of the predetermined angle of lens array outgoing, and then the string occurred between different transmitted rays can be eliminated
It disturbs.
The third aspect, the embodiment of the present application provide a kind of terminal device, which includes the display for having translucency
Screen；Detection device described in first aspect, for when an object and the detection device come close to or in contact with, obtaining for indicating
The data of the image of the lines for the one side that the object comes close to or in contact with the detection device；And processor, it is coupled to institute
Detection device is stated, for converting the data of described image to described image, and identifies whether described image is the image set.
Fourth aspect, the embodiment of the present application provide a kind of terminal device, which includes the display for having translucency
Screen；Detection device as described in second aspect, for when an object and the display screen come close to or in contact with, obtaining for indicating
The data of the image of the lines for the one side that the object comes close to or in contact with the display screen；And processor, it is coupled to described
Detection device for converting the data of described image to described image, and identifies whether described image is the image set.
Description of the drawings
Fig. 1 is the schematic diagram of optical grains image blur in the prior art；
Fig. 2 is a kind of structural schematic diagram of detection device provided by the embodiments of the present application；
Fig. 3 is the schematic diagram of luminescence component in a kind of detection device provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of display screen in a kind of detection device provided by the embodiments of the present application；
Fig. 5 is the structural schematic diagram of collimator assembly in a kind of detection device provided by the embodiments of the present application；
Fig. 6 is the structural schematic diagram of leaded light component in a kind of detection device provided by the embodiments of the present application；
Fig. 7 is another structural schematic diagram of leaded light component in a kind of detection device provided by the embodiments of the present application；
Fig. 8 is light transmission road when leaded light component is fibre faceplate in a kind of detection device provided by the embodiments of the present application
Diameter schematic diagram；
Fig. 9 is another structural schematic diagram of leaded light component in a kind of detection device provided by the embodiments of the present application；
Figure 10 is another structural schematic diagram of leaded light component in a kind of detection device provided by the embodiments of the present application；
Figure 11 is the structural schematic diagram of another detection device provided by the embodiments of the present application；
Figure 12 is a kind of structural schematic diagram of terminal device provided by the embodiments of the present application；
Figure 13 is the structural schematic diagram of another terminal device provided by the embodiments of the present application.
Specific implementation mode
In order to keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with attached drawing to the application make into
One step it is described in detail.
In a first aspect, referring to Fig. 2, the embodiment of the present application provides a kind of detection device, for realizing more accurate identification.
The detection device includes：
Luminescence component 200, for sending out original light；
Control assembly 201, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, with shape
At imaging light, wherein feedback light be when an object comes close to or in contact with the display screen, under the irradiation of original light,
Object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；
Imaging sensor 202, for by receiving the imaging light, being formed for indicating that the object comes close to or in contact with
The data of the image of the lines of the one side of the display module.
In the embodiment of the present application, the direction of propagation that feedback light is controlled by control assembly 201, can eliminate different
The crosstalk generated between feedback light, so that imaging sensor 202 can be formed after receiving imaging light for indicating
The lines more clearly data of image, and then the lines detection that realization more refines, improve the essence of optical identification under display screen
Accuracy.
In the embodiment of the present application, luminescence component 200 is the light source being arranged outside display screen.Luminescence component 200 can be with
For the array light source for being arranged in the underface region of the lower surface of display screen, array light source can be made of LED light source, can also
It is made of, or can be made of infrared light light source laser light source.In the embodiment of the present application, the region of array light source setting
It is exactly the region for detecting lines in detection device, light source is with equidistant arrangement form array, such as 5 × 4 in the area
Array, please refer to Fig.3.
In the embodiment of the present application, display screen have translucency, when the one side of object and the upper surface of display screen it is close or
When contact, original light that luminescence component 200 is sent out can penetrate display screen and be radiated in the one side of object, through object reflection
At reflection light through display screen formed object one side lines feedback light.Wherein, display screen can be organic hair
Optical diode (Organic Light-Emitted Diode, OLED), light emitting diode (Light-Emitted Diode,
) or soft Organic Light Emitting Diode (Flexible OLED, FOLED) etc. LED.
Referring to FIG. 4, display screen, by taking OLED as an example, total layer includes：Cover-plate glass 400；Polaroid 401, passes through
Optical cement is bonded setting with cover-plate glass 400；Packaged glass 402, fitting are arranged in the lower surface of polaroid 401；Cathode 403,
It is arranged in the lower surface of packaged glass 400；Luminescent layer 404 is arranged in the lower surface of cathode 403；Anode 405, setting are shining
The lower surface of layer 404 and substrate glasses 406, wherein the crosspoint of cathode 403 and anode 405 forms pixel, each pixel
The electrode of corresponding position being made of cathode 403 and anode 405 to for pixel electrode, in pixel electrode adjacent pixel electrodes it
Between have gap.
Referring to FIG. 5, since each light source in array light source can send out original light to different directions, in order to reduce
The scattering of original light, in the embodiment of the present application, detection device further include collimator assembly 500, for controlling original light
Range of exposures.Wherein, after the collimated component 500 of original light is handled, the incident display screen out of predetermined angular range can be obtained
Original light, that is, control original light be radiated at the region that the predetermined angular range is covered in the one side of object
On.For example, by array light source first light source and second light source for, the collimated component of original light that first light source is sent out
From predetermined angular range incidence display screen after 500 processing, it is radiated at the first area in the one side of object, what second light source was sent out
From predetermined angular range incidence display screen after the collimated processing of component 500 of original light, second be radiated in the one side of object
Region, first area be not be overlapped with second area.
In the embodiment of the present application, collimator assembly 500 includes light transmission part and part of being in the light.Light transmission part and part of being in the light
Realization method it is including but not limited to following two, be described separately below.
Mode A, light blocking layer is set in the lower surface of display screen, through-hole array is opened up on light blocking layer, wherein through-hole is
Light transmission part, the other parts on light blocking layer in addition to through-hole are part of being in the light, that is, in mode A, collimator assembly 500 just wraps
The through-hole array for including light blocking layer and being opened up on light blocking layer.Through-hole in original light via through holes array, by corresponding with through-hole
Adjacent pixel electrode between gap be irradiated to the different zones in object one side through display screen.
In the embodiment of the present application, the material of light blocking layer can be lighttight material, for example, black plastic film, silicon chip or
Sheet metal etc..
Mode B, light-blocking block is set in the lower surface of display screen, wherein light-blocking block is part of being in the light, adjacent light-blocking block
Between gap be light transmission part, that is, in mode B, collimator assembly 500 just include between light-blocking block and adjacent light-blocking block
Gap.Original light is corresponding by the gap between adjacent light-blocking block through the gap between adjacent light-blocking block in light-blocking block
Adjacent pixel electrode between gap be irradiated to the different zones in the one side of object through display screen.
In the embodiment of the present application, since the pixel electrode of display screen has strong opaqueness, and the pixel electrode back side, i.e.,
The one side of the lower surface towards display screen of pixel electrode have strong reflection, that is, be irradiated to pixel electrode the back side just
Strong reflection can occur for beginning light, therefore, part of being in the light can be formed at pixel electrode so that original light is from adjacent light-blocking part
/ light transmission part it is incident, limit the incident angle of incident ray, original light avoided to be irradiated to the back of the body of pixel electrode
Be reflected back behind face, can not incident display screen, to improve the exposure rate that original light is irradiated to the one side of object.
In the embodiment of the present application, original light is irradiated to the one side of object, the reflection light formed after object reflects
Feedback light is formed through display screen, since crosstalk may be will produce between feedback light, to avoid the string between feedback light
It disturbs, the direction of propagation of feedback light is controlled by control assembly 201, to form imaging light.
In the embodiment of the present application, control assembly 201 includes：
Lens array, for converging feedback light, to form the transmitted ray of incident image sensor 202；
Leaded light component is arranged between lens array and imaging sensor 202, every from the lens array for eliminating
The crosstalk occurred between the transmitted ray of a lens outgoing, to form imaging light.
In the embodiment of the present application, lens array is for being focused the feedback light of reception.In specific implementation process
In, since terminal device is increasingly to lightening development, the volume of such detection device is restricted, if to ensure detection dress
In a certain range, then the thickness of lens also will be in a certain range for the thickness set.And when one timing of the thickness of lens, lens
Focal length it is shorter, the diameter of lens is also smaller, then in the case where the diameter of lens is smaller, lens receive the angle of emergent ray
It is smaller to spend range, then to guarantee to receive the emergent ray at any angle being emitted from display screen, and to emergent ray into
Row convergence needs that lens array is arranged.In the embodiment of the present application, the gap between the adjacent lens in lens array is identical,
And the focal length of the diameter all same of each lens in lens array, each lens also all same.
In the embodiment of the present application, the diameter for each lens that lens array includes is within the scope of preset diameters, such as in advance
If diameter range is [5 microns (um), 600um], wherein consider the resolution ratio of the machining accuracy and image of lens, lens
Diameter value is specifically as follows 50um.The focal length for each lens that lens array includes is in default focal range, such as presets
Focal range is [20um, 800um], wherein in view of the resolution ratio of the machining accuracy and image of lens, the focal length of lens takes
Value is specifically as follows 50um.Wherein, the material for the lens that lens array includes can be resin, plastics or glass etc..
It in the embodiment of the present application, then will by leaded light component after lens array is completed to the convergence of feedback light
The transmitted ray transmitted from lens array is transferred to imaging sensor 202.
In the embodiment of the present application, the realization method of leaded light component includes but not limited to three kinds following, is introduced separately below.
Wherein, the through-hole array opened up on light blocking layer is hereinafter known as first through hole array.
The realization method one of leaded light component
Leaded light component includes：Light non-transmittable layers, light non-transmittable layers offer through-hole array, will hereinafter be opened up in light non-transmittable layers
Through-hole array is known as the second through-hole array, and the second through-hole array includes the first through hole and the second through-hole through light non-transmittable layers；Its
In, there is partition, to eliminate the transmitted ray that is emitted from first lens and from described between first through hole and the second through-hole
The crosstalk occurred between the transmitted ray of second lens outgoing.
Referring to FIG. 6, leaded light component is the light non-transmittable layers for offering the second through-hole array.In the embodiment of the present application, no
Euphotic material can be black plastic film, silicon chip, sheet metal etc..
It in the embodiment of the present application, can be by modes such as laser, mechanical processing coining or micro-nano technologies in light non-transmittable layers
On open up the second through-hole array.Second through-hole array includes first through hole and the second through-hole, certainly can be with third through-hole, the 4th
Through-hole is not restricted in the embodiment of the present application.Wherein, in the arrangement position and lens array of the through-hole in the second through-hole array
Lens arrangement position correspond.Here " correspondence ", refer to from the transmitted ray that some lens transmits from the lens
Corresponding through-hole outgoing.Such as with the first lens in the first through hole and the second through-hole, lens array in the second through-hole array
For the second lens, first through hole and the first lens correspond to, that is, control from the transmitted ray that the first lens transmit from the
One through-hole is emitted, and the second through-hole and the second lens correspond to, that is, is controlled logical from the transmitted ray that the second lens transmit from second
Hole is emitted.
Continuation has by taking the first through hole that through-hole array includes and the second through-hole as an example between first through hole and the second through-hole
There is partition, since light non-transmittable layers can be in the light, so, partition can also be in the light, to avoid the transmission transmitted from the first lens
Crosstalk occurs between light and the transmitted ray transmitted to lens.
During specific implementation, when the depth of through-hole does not reach in predetermined depth, that is, the second through-hole array
When each also having certain distance between through-hole and imaging sensor 202, string may still will produce between the light that through-hole is emitted
It disturbs.Therefore, in order to preferably eliminate from the crosstalk between the transmitted ray that different lens transmit, in the embodiment of the present application, no
Euphotic thickness is less than or equal to from the optical center of lens to the vertical range imaging sensor 202, alternatively, the second through-hole
The depth-to-width ratio of through-hole is more than preset value in array, for example, 3:1,5:1 or be 10:1, wherein the depth-to-width ratio of through-hole is through-hole
The ratio of depth and aperture, that is, the thickness of light non-transmittable layers and aperture ratio.When the aperture of through-hole is certain, the depth of through-hole is wide
Than it is bigger when, the depth of through-hole is deeper, and the distance between the bottom end of through-hole and imaging sensor 202 are also just smaller, go out from through-hole
The light direct irradiation penetrated on imaging sensor 202 on the region where the projection of the through-hole, for example, saturating from the first lens
The transmitted ray penetrated is emitted to the first area on imaging sensor 202 where the projection of first through hole through first through hole, from
The transmitted ray of two lens transmission is emitted on imaging sensor 202 the secondth area where the projection of second through-hole through the second through-hole
Domain avoids the transmitted ray transmitted from the first lens from through first through hole being emitted to second area and/or transmitted from the second lens
Transmitted ray is emitted to first area through the second through-hole, so as to further eliminate between the transmitted ray that lens transmit
Crosstalk.
Meanwhile in order to efficiently differentiate the transmitted ray gone out from different lens projects, each of second through-hole array is logical
The aperture in hole is less than or equal to the diameter of the lens corresponding with each through-hole in lens array, such as the aperture of first through hole is small
In or equal to the first lens diameter, the aperture of the second through-hole is less than the diameter equal to the second lens, to avoid from second thoroughly
The transmitted ray of mirror transmission is directly incident on from the top of first through hole in first through hole, with the transmitted light transmitted in first through hole
Crosstalk occurs between line.
In the embodiment of the present application, in order to meet the requirement of resolution ratio, also require that each of second through-hole array is logical
Hole corresponds to a pixel, and the aperture of each through-hole can be smaller in such second through-hole array, on the other hand, different saturating to eliminate
The depth of crosstalk between the transmitted ray of mirror, each through-hole that the second through-hole array includes can be relatively deep, that is, the depth of through-hole is wide
It is more bigger than meeting.And as described in (1), the second through-hole array is by laser, mechanical processing coining or micro Process etc.
Mode makes, however the difficulty of these processing methods often increases with the increase of the depth-to-width ratio of through-hole, is unfavorable for volume production.Mirror
In this, the embodiment of the present application proposes the realization method two of leaded light component, referring to FIG. 7, eliminating difference using fibre faceplate
Lens transmitted ray between crosstalk.
The realization method two of leaded light component
Leaded light component is fibre faceplate, and the numerical aperture of fibre faceplate is less than preset value, so that fibre faceplate is received from saturating
The transmitted ray in predetermined angle range of lens array outgoing, to eliminate the transmitted ray being emitted from the first lens of lens array
And from the crosstalk that occurs between the transmitted ray that the second lens of lens array are emitted.Wherein, preset value is according to lens array packet
The distance between any one lens and fibre faceplate obtain in the diameter and lens array of any one lens included.
Fibre faceplate includes fibre core and covering.Wherein, the string diameter of fibre core is by power of a lens in lens array and lines
The resolution ratio that identification needs obtains.For example, being 500 pixels in resolution ratio, the magnifying power of lens array is 2:When 1, image sensing
Single pixel maximum of device 202 is no more than 25um, and single pixel of imaging sensor 202 at least needs 4-6 root fibre cores to be fitted
Match, if for 4, the string diameter of fibre core is 6um or so.
In the embodiment of the present application, the crosstalk between the transmitted ray in order to eliminate different lens, the number of fibre faceplate
It is worth aperture and is less than preset value, so that fibre faceplate receives the transmitted ray within the scope of predetermined angle transmitted from lens array.
For example,Wherein, NA is the numerical aperture of fibre faceplate,For the diameter of the lens in lens array, L is lens array
The distance between row and fibre faceplate.
On the other hand, the numerical aperture of fibre faceplate is related to the refractive index of the refractive index of fibre core and covering, works as fiber facet
When the numerical aperture of plate is smaller, the difference between the refractive index of fibre core and the refractive index of covering is also smaller, for example, when fibre faceplate
When numerical aperture is 0.14, the difference between the refractive index of fibre core and the refractive index of covering is 0.01；When the numerical value of fibre faceplate
When aperture is 0.15, the difference between the refractive index of fibre core and the refractive index of covering is 0.02 etc..
It is the refractive index n of 0.01, corresponding fibre core with the difference between the refractive index of fibre core and the refractive index of covering below1
=1.5122, the refractive index n of covering2For=1.50137, how introduction determines predetermined angle range.
Referring to FIG. 8, when the transmitted ray of lens is with incidence angle θ0It is incident from the first end face of fibre faceplate, after refraction
Refracted light is formed to be incident on the first interface of fibre core.If the incidence angle φ of refracted light on the first interface0More than facing
Boundary angle φc, refracted light will be totally reflected on the first interface, the light of total reflection be incident on fibre core with the first interface phase
To second contact surface on, and be totally reflected on second contact surface.In this way, reflection light passes through multiple total reflection in fibre core
Afterwards, from the second end face outgoing opposite with first end face of fibre faceplate.Thus, it is possible to derive transmitted ray in fibre faceplate
The interior condition being totally reflected is：
Wherein, n in formula (1)0For the absolute index of refraction of air, n1For the refractive index of fibre core, n2For the refractive index of covering.
Due to n0≈ 1, then formula (1) following formula can be reduced to：
Wherein, work as n1=1.5122, n2When=1.50137, the incident angle θ of transmitted ray can be calculated0It is 9.9 °.
Namely incident angle is less than θ0The refracted light that is formed after the first end face incidence of fibre faceplate of transmitted ray will be
One interface is totally reflected, and refracted light is emitted by the transmission of free of losses from the second end face of fibre faceplate；And incident angle
More than θ0The refracted light that transmitted ray is formed after the first end face incidence of fibre faceplate will again reflect at the first interface, then
Refracted light after secondary refraction is incident on covering.
In the embodiment of the present application, the refraction light after reflecting again can be eliminated by the way that absorption silk is added in covering
Line also can increase by one layer of light blocking layer in the outside of covering, such as the light blocking layer made by polyacrylate, for eliminating from covering
The light of outgoing.For above two realization method, those of ordinary skill in the art can select according to actual needs, in this Shen
It please not be restricted in embodiment.
In the embodiment of the present application, in order to meet the requirement of resolution ratio, also require that each of second through-hole array is logical
Hole corresponds to a pixel, and the aperture of each through-hole can be smaller in such second through-hole array, on the other hand, different saturating to eliminate
The depth of crosstalk between the transmitted ray of mirror, each through-hole that the second through-hole array includes can be relatively deep, that is, the depth of through-hole is wide
It is more bigger than meeting.And as described in the realization method of leaded light component one, the second through-hole array is added by laser, machinery
Work imprints or the modes such as micro Process make, however the difficulty of these processing methods often with the increase of the depth-to-width ratio of through-hole and
Increase, is unfavorable for volume production.In consideration of it, the embodiment of the present application proposes the realization method three of leaded light component, that is, use in vertical direction
Crosstalk between transmitted ray of the upper N layer light non-transmittable layers for stacking setting to eliminate different lens.
The realization method three of leaded light component
Leaded light component includes：The N layer light non-transmittable layers of setting are stacked in vertical direction, and every layer in N layers of light non-transmittable layers is not
Photic zone offers through-hole array, and the position for the through-hole array that every layer of light non-transmittable layers open up is completely superposed, hereinafter not by every layer
The through-hole array that photic zone opens up is known as third through-hole array, third through-hole array include through every layer of light non-transmittable layers third it is logical
Hole and fourth hole, N are integer；
Wherein, there is partition between the third through-hole and the fourth hole, be emitted with eliminating from first lens
Transmitted ray and from the crosstalk that occurs between the transmitted ray that second lens are emitted.
In the embodiment of the present application, every layer of light non-transmittable layers in N layers of light non-transmittable layers offer third through-hole array, and third is logical
The arrangement position of lens in the arrangement position and lens array of through-hole in hole array corresponds.Here " correspondence " is
Finger is emitted from the transmitted ray that some lens transmits from through-hole corresponding with the lens.Such as with the third in third through-hole array
Through-hole and fourth hole, for the first lens and the second lens in lens array, third through-hole and the first lens correspond to, also
It is to control to be emitted from the transmitted ray that the first lens transmit from third through-hole, fourth hole and the second lens correspond to, that is, control
System is emitted from the transmitted ray of the second lens projects from fourth hole.In the embodiment of the present application, N is by the lens in lens array
Diameter and the lens array period obtain, for example,Wherein, It is saturating in lens array
The diameter of mirror, p are the period of lens array.
During specific implementation, when the depth of through-hole does not reach in predetermined depth, that is, third through-hole array
Each between through-hole and imaging sensor 202 also have certain distance when, from through-hole be emitted light between or may will produce
Crosstalk.Therefore, in order to preferably eliminate from the crosstalk between the transmitted ray that different lens transmit, in the embodiment of the present application, N
The overall thickness of the light control layer of the folded setting of layer heap is less than or equal to from the optical centers of lens to vertical imaging sensor 202
Distance.
Meanwhile in order to efficiently differentiate the transmitted ray transmitted from different lens, each of third through-hole array is logical
The aperture in hole is less than or equal to the diameter of the lens corresponding with each through-hole in lens array, such as the aperture of third through-hole is small
In or equal to the first lens diameter, the aperture of fourth hole is less than the diameter equal to the second lens, to avoid from second thoroughly
The transmitted ray of mirror transmission is directly incident on from the top of third through-hole in third through-hole, with the transmitted light transmitted in third through-hole
Crosstalk occurs between line.In the embodiment of the present application, the realization method of N layers of light non-transmittable layers is including but not limited to following two, under
Face is respectively introduced both realization methods.
The realization method one of light control layer
Referring to FIG. 9, every layer of light non-transmittable layers in N layers of light non-transmittable layers include the first sublayer and are vaporized on the upper of the first sublayer
Second sublayer on surface, wherein the material of the first sublayer is translucent material, such as the glass with translucency or plastics etc., the
The material of two sublayers is light-proof material, such as lighttight film, can be metallic film, black polyester film
(Polyseter Film, PET) or black glue layer.
In the embodiment of the present application, the formation of the through-hole array in every layer of light non-transmittable layers, it is including but not limited to following two
Mode：
As an example, the second sublayer is deposited in every layer of first sublayer using evaporation process, is opened in the second sublayer
If third through-hole array.
Or as another example, can mask plate first be set in every layer of first sublayer, wherein be arranged on mask plate
There are at least two subregions, has gap between adjacent subregion at least two subregions, steamed at least two subregions
Plate the second sublayer.Mask plate is removed again, is obtained the light non-transmittable layers provided with third through-hole array, then will be provided with third through-hole
The light non-transmittable layers of array are stacked by way of bonding and are set together in vertical direction.
It is carried out in the way of laser, mechanical processing coining or micro Process etc. either in the second sublayer of thinner thickness
Punching forms third through-hole array, or forms third through-hole array by mask plate, compared in thicker opaque of thickness
It is punched on layer, the difficulty of processing can reduce very much, be more suitable for volume production.
The realization method two of light control layer
Referring to FIG. 10, N layers of light non-transmittable layers, such as silicon substrate.Third through-hole array is opened up in every layer of light non-transmittable layers, is opened
If the mode of third through-hole array can be the modes such as laser, mechanical processing coining or micro Process.
In the embodiment of the present application, the light control layer of third through-hole array is offered by way of bonding in Vertical Square
Setting is stacked upwards.Since leaded light component includes N layers of light non-transmittable layers, the realization of the thickness of every layer of light non-transmittable layers with respect to leaded light component
The thickness of light non-transmittable layers in mode one wants thinner, then is beaten by modes such as laser, mechanical processing coining or micro Process
Punching difficulty when hole can reduce very much.
In the embodiment of the present application, the imaging light that transmitted ray is formed after leaded light component transmits will be incident on image biography
Sensor 202, to form the data of the image for indicating lines.Hereinafter, with lines be fingerprint, formation lines image be
For fingerprint image, the working method of imaging sensor 202 is introduced.
Imaging sensor 202 includes image sensing layer and image chip, can be passed through between image sensing layer and image chip
Flexible PCB connects.Wherein, when handling fingerprint, the fingerprint image of formation is converted to electric signal by image sensing layer, is passed through
Electric signal is sent to image chip by flexible PCB, and image chip is amplified conversion to the electric signal received, and exports
Digital fingerprint image is to processor end, and image chip is with processor end using Serial Peripheral Interface (SPI) (Serial Peripheral
Interface, SPI) or I2C (Inter-Integrated Circuit) interface communicated.
In the embodiment of the present application, image sensing layer can be charge coupled cell (Charge-coupled Device,
CCD), or complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor,
CMOS) imaging sensor 202.
During specific implementation, in order to realize that large area may be used in the volume production of detection device, fingerprint image sensing layer
Imaging sensor 202, for example, the picture of large image scale sensor 202 using organic material as light-sensitive medium, specifically, can incite somebody to action
Organic print photodetector (Organic Printed Photodetecor, OPD) deposits to plastics Organic Thin Film Transistors
On the backboard of (Thin film transistor, TFT), to realize that picture of large image scale senses；Or use amorphous silicon glass base
The picture of large image scale sensor 202 of material, for example, by using photodiode and thin film transistor (TFT) as optical sensitive unit, with glass
Or plastics are realized for base material.
In the embodiment of the present application, due to controlling the direction of propagation of different feedback lights by control assembly 201,
It is exactly used to eliminate the crosstalk generated between feedback light, so as to ensure to receive imaging light in imaging sensor 202
The data for indicating the clearly image of lines are formed afterwards, and then realize the lines detection more refined, are improved under display screen
The precision of optical identification.
Second aspect please refers to Fig.1 1, and the embodiment of the present application provides a kind of detection device, including：
Control assembly 1100, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, with
Form imaging light, wherein the feedback light is to be sent out in the display screen when an object comes close to or in contact with the display screen
Under the irradiation of the original light gone out, the object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；
Imaging sensor 1101, for by receiving the imaging light, being formed for indicating that the object is close or connects
Touch the data of the image of the lines of the one side of the display module.
In the embodiment of the present application, the direction of propagation that feedback light is controlled by control assembly 1100, can eliminate difference
Feedback light between the crosstalk that generates so that imaging sensor 1101 receive be imaged light after can be formed for table
Show the lines more clearly data of image, and then the lines detection that realization more refines, improves optical identification under display screen
Precision.
In the embodiment of the present application, the original light of detection device is sent out by the luminescent layer of the display screen with translucency.
In the embodiment of the present application, in the embodiment of the present application, display screen can be Organic Light Emitting Diode (Organic Light-
Emitted Diode, OLED), light emitting diode (Light-Emitted Diode, LED) or soft Organic Light Emitting Diode
(Flexible OLED, FOLED) etc..Wherein, display screen is introduced by taking OLED as an example.
Fig. 4 is referred to, when applying voltage at the both ends for showing mould screen, the electric current of generation flows to sun from the cathode of display screen
Pole, anode hole will be combined with cathode electronics in luminescent layer, be generated bright that is, first described in the embodiment of the present application
Beginning light.Wherein, the material of luminescent layer includes at least one material of main part and at least one object dopant material, material of main part
Can be P-type material, that is, cavity type material, or n type material, that is, electron type material, object dopant material
Can be phosphor material or fluorescent material.
In the embodiment of the present application, to the introduction of control assembly 1100, imaging sensor 1101 in first aspect to control
The introduction of component 201 and imaging sensor 202 processed, details are not described herein.
The third aspect please refers to Fig.1 2, and the application applies example and provides a kind of terminal device, including：
Display screen 1200 with translucency；
Detection device 1201 as described in relation to the first aspect, for being come close to or in contact in an object and the display screen 1200
When, obtain the data of the image of the lines for indicating one side that object and display screen 1200 come close to or in contact with；
Processor 1202 is coupled to detection device 1201, for converting the data of image to image, and identifies that image is
The no image for setting.
In the embodiment of the present application, terminal device can be including but not limited to mobile phone (or be known as " honeycomb " electricity
Words), there is mobile terminal device computer, portable, hand-held, built-in computer or vehicle-mounted mobile device, intelligence
Wearable etc..For example, mobile phone, tablet computer (PAD), personal digital assistant (Personal Digital Assistant,
PDA), point-of-sale terminal (Piont of Sales, POS), vehicle-mounted computer, smartwatch, intelligent helmet, intelligent glasses or intelligence
Equipment such as bracelet etc..
In the embodiment of the present application, after processor 1202 receives the data for indicating fingerprint image, by fingerprint image
The data of picture are converted into fingerprint image, the characteristic point for the image that takes the fingerprint, by the characteristic point of extraction and the characteristic point pre-saved
It is matched, the matching degree between obtaining the characteristic point of extraction and the characteristic point that pre-saves, when being more than preset value when matching degree,
Such as 90%, then show successful match, when matching degree is less than preset value, then shows that it fails to match, when it fails to match, processing
Device 1202 can export prompt message, for example, voice prompt " fingerprint please be re-type " is exported, or the flash for prompting for passing through light
Fingerprint matching fails.
Processor 1202 can be specifically that general central processing unit or application-specific integrated circuit are (English：
Application Specific Integrated Circuit, referred to as：ASIC), can be that one or more is used to control journey
The integrated circuit that sequence executes can be use site programmable gate array (English：Field Programmable Gate
Array, referred to as：FPGA) the hardware circuit developed, can be baseband processor.
In the embodiment of the present application, terminal device further includes：
Sensor 1203, for detecting touch control operation, which is used for the detection function of activation detection apparatus 1201.
Wherein, touch control operation can be pressing operation or slide.
After detecting touch control operation, then the detection function of activation detection apparatus 1201, in order to reduce detection device 1201
Power consumption, in the embodiment of the present application, processor 1202 is additionally operable to：
According to touch control operation, the position of touch of touch control operation is determined；
The light source with the position of touch corresponding position that the luminescence component for controlling the detection device 1201 includes
In illuminating state, other light sources in the luminescence component are closed.
In the embodiment of the present application, sensor 1203 can be pressure sensor or be gravity sensor.
In the embodiment of the present application, continue by taking fingerprint recognition as an example, luminescence component include first light source, second light source,
Third light source and the 4th light source, when the first area in the fingerprint identification region that position of touch is on display screen 1200, control
First light source and second light source in luminescence component are opened, and third light source and the 4th light source are closed；When position of touch is display screen
When second area in the fingerprint identification region on 1200, the third light source and the 4th light source that control in luminescence component are opened, the
One light source and second light source are closed.As a result, in position of touch difference, the part light source controlled in luminescence component is in opening state
State controls other parts light source in luminescence component and is closed, to reduce the work(of terminal device for sending out primary light source
Consumption.
Fourth aspect please refers to Fig.1 3, and the embodiment of the present application provides a kind of terminal device, including：
Display screen 1300 with translucency；
Detection device 1301 as described in second aspect, for being come close to or in contact in an object and the display screen 1300
When, obtain the data of the image of the lines for indicating one side that the object and the display screen 1300 come close to or in contact with；
Processor 1302 is coupled to the detection device 1301, for converting the data of described image to described image,
And identify whether described image is the image set.
In the embodiment of the present application, terminal device can be including but not limited to mobile phone (or be known as " honeycomb " electricity
Words), there is mobile terminal device computer, portable, hand-held, built-in computer or vehicle-mounted mobile device, intelligence
Wearable etc..For example, mobile phone, tablet computer (PAD), personal digital assistant (Personal Digital Assistant,
PDA), point-of-sale terminal (Piont of Sales, POS), vehicle-mounted computer, smartwatch, intelligent helmet, intelligent glasses or intelligence
Equipment such as bracelet etc..
In the embodiment of the present application, after processor 1302 receives the data of fingerprint image, by the data of fingerprint image
It is converted into fingerprint image, the characteristic point for the image that takes the fingerprint matches the characteristic point of extraction with the characteristic point pre-saved,
The matching degree between the characteristic point and the characteristic point pre-saved of extraction is obtained, when being more than preset value when matching degree, such as 90%,
Then show successful match, when matching degree is less than preset value, then shows that it fails to match, when it fails to match, 1302 meeting of processor
Prompt message is exported, for example, voice prompt " fingerprint please be re-type " is exported, or the flash for prompting fingerprint matching for passing through light
Failure.
Processor 1302 can be specifically that general central processing unit or application-specific integrated circuit are (English：
Application Specific Integrated Circuit, referred to as：ASIC), can be that one or more is used to control journey
The integrated circuit that sequence executes can be use site programmable gate array (English：Field Programmable Gate
Array, referred to as：FPGA) the hardware circuit developed, can be baseband processor.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (13)
1. a kind of detection device, which is characterized in that including：
Luminescence component, for sending out original light；
Control assembly, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, to form imaging
Light, wherein the feedback light is when an object comes close to or in contact with the display screen, in the irradiation of the original light
Under, the object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；
Imaging sensor, for by receiving the imaging light, being formed for indicating that it is described aobvious that the object comes close to or in contact with
Show the data of the image of the lines of the one side of module.
2. detection device according to claim 1, which is characterized in that the control assembly includes：
Lens array, for converging the feedback light, to form the transmitted ray of incident described image sensor；
Leaded light component is arranged between the lens array and described image sensor, for eliminating from the lens array
The crosstalk occurred between the transmitted ray of each lens outgoing, to form the imaging light.
3. detection device according to claim 2, which is characterized in that the leaded light component includes：
The N layer light non-transmittable layers of setting are stacked in vertical direction, and every layer of light non-transmittable layers in the N layers of light non-transmittable layers offer logical
The position of hole array, the through-hole array that every layer of light non-transmittable layers open up is completely superposed, and the through-hole array includes through described
The first through hole and the second through-hole of every layer of light non-transmittable layers, N is integer；
Wherein, there is partition between the first through hole and second through-hole, with eliminate be emitted from first lens it is saturating
Penetrate light and from the crosstalk occurred between the transmitted ray that second lens are emitted.
4. detection device according to claim 3, which is characterized in that the N is to the function acquisition value according to duty ratio
It rounds up；Wherein, the inverse of the function of duty ratio difference between 1 and the duty ratio, the duty ratio
For the ratio in the period of the lens of the diameter and lens array of the lens in the lens array.
5. detection device according to claim 2, which is characterized in that the leaded light component includes：
Light non-transmittable layers, the light non-transmittable layers offer through-hole array, and the through-hole array includes through the of the light non-transmittable layers
One through-hole and the second through-hole；
Wherein, there is partition between the first through hole and second through-hole, with eliminate be emitted from first lens it is saturating
Penetrate light and from the crosstalk occurred between the transmitted ray that second lens are emitted.
6. detection device according to claim 5, which is characterized in that the thickness of the light non-transmittable layers is less than or equal to from institute
The optical center of the lens in lens array is stated to the vertical range between described image sensor, so that from the of the lens array
The transmitted ray of one lens outgoing is emitted to the projection institute of the first through hole in described image sensor through the first through hole
First area, from the second lens of the lens array be emitted transmitted ray be emitted to the figure through second through-hole
As the second area where the projection of second through-hole on sensor.
7. according to the detection device described in any claims of claim 3-6, which is characterized in that the aperture of the first through hole is less than
Or the diameter equal to first lens, the aperture of second through-hole are less than or equal to the diameter of second lens.
8. detection device according to claim 2, which is characterized in that the leaded light component is fibre faceplate, the optical fiber
The numerical aperture of panel be less than preset value so that the fibre faceplate receive be emitted from the lens array in predetermined angle model
The transmitted ray enclosed, with eliminate the transmitted ray that is emitted from the first lens of the lens array and from the lens array the
The crosstalk occurred between the transmitted ray of two lens outgoing；
Wherein, the preset value be the lens in the lens array diameter and the lens array and the fibre faceplate it
Between distance ratio.
9. according to the detection device described in any claims of claim 1-8, which is characterized in that
The detection device further includes：
Collimator assembly is radiated at the object for controlling the original light that the different light sources that the luminescence component includes are sent out
One side on different zones.
10. detection device according to claim 9, which is characterized in that the collimator assembly includes：
Light transmission part and part of being in the light, the light transmission part are arranged between adjacent light-blocking part point, and the part of being in the light is used for
Stop that the original light is irradiated on the pixel electrode of the display screen, to control the original light by the transmittance section
Point, the different zones from the one side that the gap between adjacent pixel electrode is irradiated to the object.
11. a kind of detection device, which is characterized in that including：
Control assembly, the direction of propagation for controlling the feedback light being emitted from the display screen with translucency, to form imaging
Light, wherein the feedback light is to be sent out in the display screen initial when an object comes close to or in contact with the display screen
Under the irradiation of light, the object comes close to or in contact with the light that the lines of the one side of the display screen is reflected；
Imaging sensor, for by receiving the imaging light, being formed for indicating that it is described aobvious that the object comes close to or in contact with
Show the data of the image of the lines of the one side of module.
12. a kind of terminal device, which is characterized in that including：
Display screen with translucency；
Detection device as described in any claims of claim 1-10, for being come close to or in contact in an object and the display screen
When, obtain the data of the image of the lines for indicating one side that the object and the display screen come close to or in contact with；
Processor is coupled to the detection device, for converting the data of described image to described image, and identifies the figure
It seem the no image for setting.
13. a kind of terminal device, which is characterized in that including：
Display screen with translucency；
Detection device as claimed in claim 11, for when an object and the display screen come close to or in contact with, being used for
Indicate the data of the image of the lines for the one side that the object comes close to or in contact with the display screen；
Processor is coupled to the detection device, for converting the data of described image to described image, and identifies the figure
It seem the no image for setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/083219 WO2018188670A1 (en) | 2017-04-14 | 2018-04-16 | Detection apparatus and terminal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017102459896 | 2017-04-14 | ||
| CN201710245989 | 2017-04-14 |
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| CN201720946650.4U Active CN207489034U (en) | 2017-04-14 | 2017-07-31 | A kind of detection device and terminal device |
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| CN207586941U (en) | 2018-07-06 |
| CN207489034U (en) | 2018-06-12 |
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