CN108614983A - Display module and its application method - Google Patents
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- CN108614983A CN108614983A CN201611131247.2A CN201611131247A CN108614983A CN 108614983 A CN108614983 A CN 108614983A CN 201611131247 A CN201611131247 A CN 201611131247A CN 108614983 A CN108614983 A CN 108614983A
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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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
A kind of display module and its application method.Wherein, the display module includes light-emitting display panel, and light-emitting display panel includes first substrate, second substrate and self-luminescence circuit layer, and for self-luminescence circuit layer between first substrate and second substrate, self-luminescence circuit layer includes multiple display pixel cells；Each display pixel cells include at least one alternatively non-transparent district and at least one transparent area；Optical fingerprint sensor, optical fingerprint sensor are located at below second substrate, and optical fingerprint sensor includes fingerprint sensing circuit layer and underlay substrate, and for underlay substrate between second substrate and fingerprint sensing circuit layer, the underlay substrate is light-transmitting materials；Dotted backlight, dotted backlight is located at below second substrate and the side of optical fingerprint sensor, and the light that dotted backlight is sent out enters underlay substrate with angle obliquely, from the side of underlay substrate, and enters second substrate obliquely from underlay substrate.The display module can be good at integrated optics fingerprint identification function.
Description
Technical field
The present invention relates to optical finger print identification field more particularly to a kind of display modules and its application method.
Background technology
Fingerprint imaging identification technology is the fingerprint image that human body is collected by fingerprint sensor, then in system
Have fingerprint imaging information to be compared, whether carrying out correct judgment, and then realizes the technology of identification.The side used due to it
Just property and the uniqueness of somatic fingerprint, fingerprint identification technology have been widely used in every field.Such as public security bureau, customs
Etc. field of safety check, consumer product areas such as the access control system and PC of building and mobile phone etc..
The realization method of fingerprint imaging identification technology has the multiple technologies such as optical imagery, capacitance imaging, ultrasonic imaging.Relatively
For, optical finger print imaging technique, imaging effect is relatively preferable, and equipment cost is relatively low.
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display module is FPD neck
One of the hot spot in domain.OLED display modules have many advantages, such as low energy consumption, wide colour gamut, self-luminous, wide viewing angle and quick response, at present
Apply in electronic products such as mobile phone, computer and digital cameras.
In the prior art, the display module for mostly using capacitance type fingerprint imaging technique and Organic Light Emitting Diode is collected
At.More contents in relation to integrating fingerprint identification function in display module can refer to the middle promulgated by the State Council of Publication No. CN106024833A
Bright patent application.
The display module structure of existing integrating fingerprint identification function has much room for improvement, and performance is to be improved.
Invention content
Problems solved by the invention is to provide a kind of display module, and optical finger print identification function is integrated in display to realize
In module, make display module that there is good fingerprint identification function.
To solve the above problems, the present invention provides a kind of display modules, including：Light-emitting display panel, it is described spontaneous
Light display panel includes first substrate, second substrate and self-luminescence circuit layer, and the self-luminescence circuit layer is located at first base
Between plate and the second substrate, the self-luminescence circuit layer includes multiple display pixel cells；Each display pixel list
Member includes at least one alternatively non-transparent district and at least one transparent area；Further include：Optical fingerprint sensor, the optical finger print sensing
Device is located at below the second substrate, and the optical fingerprint sensor includes fingerprint sensing circuit layer and underlay substrate, the lining
For substrate between the second substrate and the fingerprint sensing circuit layer, the underlay substrate is light-transmitting materials；The dotted back of the body
Light source, the dotted backlight are located at below second substrate, and the dotted backlight is located at the side of the optical fingerprint sensor
Side, the light that the dotted backlight is sent out enter the second substrate with angle obliquely.
Optionally, the display module further includes protective layer, and the protective layer is located above the first substrate.
Optionally, there is light transmission glue, the dotted backlight to send out between the dotted backlight and the second substrate
Light from the light-emitting surface of the dotted backlight enter the light transmission glue, then from the light transmission glue enter the second substrate.
Optionally, there is interval between the dotted backlight and the optical fingerprint sensor.
Optionally, there is collector lens, the collector lens can make described before the light-emitting surface of the dotted backlight
The light of dotted backlight is converted to directional light or nearly directional light, and it is saturating that the light of the dotted backlight is introduced into the optically focused
Mirror enters back into the second substrate.
Optionally, the second substrate lower surface further includes light antireflection layer close to the region of the dotted backlight, described
Light antireflection layer can increase the light of the dotted backlight into the ratio of the protective layer.
Optionally, there is optical cement between the light-emitting display panel and the optical fingerprint sensor.
Optionally, there is optical cement between the light-emitting display panel and the protective layer.
Optionally, the dotted backlight is a LED light, and the light of the LED light is black light, purple light, blue
Light, green light, sodium yellow, red light, near infrared light or white light；Alternatively, the dotted backlight is more than two LED light,
Described two above LED light are evenly distributed on the lower section of the second substrate, the light of the LED light be black light, purple light,
Blue light, green light, sodium yellow, red light, near infrared light or white light.
To solve the above problems, the present invention also provides a kind of application methods of display module, wherein the display module
Including：Light-emitting display panel, the light-emitting display panel include first substrate, second substrate and self-luminescence circuit layer, institute
Self-luminescence circuit layer is stated between the first substrate and the second substrate, the self-luminescence circuit layer includes multiple displays
Pixel unit, each display pixel cells include at least one alternatively non-transparent district and at least one transparent area；Optical finger print passes
Sensor, the optical fingerprint sensor are located at below the second substrate, and the optical fingerprint sensor includes fingerprint sensing electricity
Road floor and underlay substrate, the fingerprint sensing circuit layer is between the second substrate and the underlay substrate；Dotted backlight
Source, the dotted backlight are located at below second substrate, and the dotted backlight is located at the side of the optical fingerprint sensor,
The light that the dotted backlight is sent out enters the second substrate with angle obliquely；The application method includes：By institute
It states display area opposite with the optical fingerprint sensor in light-emitting display panel and is defined as the first display area, other portions
The display area divided is defined as the second display area；When the optical fingerprint sensor carries out fingerprint image acquisition work, control
First display area is made to stop showing work.
Optionally, the application method further includes：When the optical fingerprint sensor carries out fingerprint image acquisition work,
It controls second display area and shows information associated with fingerprint image acquisition work.
Compared with prior art, technical scheme of the present invention has the following advantages：
In technical scheme of the present invention, the optical fingerprint sensor and dotted backlight be may be contained within into self-luminous and shown
Below the second substrate of panel, the dotted backlight is set to the optical fingerprint sensor side, light-emitting display panel
It is provided with transparent area, therefore, the light that dotted backlight is sent out can be made back and forth through light-emitting display panel, so as to
The acquisition to finger fingerprint image is realized using display module, also, collected fingerprint image is clear, keep display module integrated
There is good fingerprint identification function.
In technical scheme of the present invention, when using display module, control corresponding with optical fingerprint sensor first is shown
Show that region when optical fingerprint sensor carries out fingerprint image acquisition work, is stopped, and it is aobvious to control the second display area
Show information associated with fingerprint image acquisition work, so that display function and fingerprint identification function cooperate,
Realize better user experience.
Description of the drawings
Fig. 1 is the display module cross-sectional view that the embodiment of the present invention is provided；
Fig. 2 is the display module cross-sectional view that another embodiment of the present invention is provided.
Specific implementation mode
As described in background, the prior art mostly uses the aobvious of capacitance type fingerprint imaging technique and Organic Light Emitting Diode
Show that module is integrated.
For this purpose, in a kind of display module of present invention offer, optical fingerprint sensor and light-emitting display panel are integrated in
Together, to while realizing display, realize fingerprint identification function, also, pass through corresponding structure design so that aobvious
Show that module can collect clearly fingerprint image, and display function and fingerprint identification function are cooperated, makes
Obtain user has better usage experience to display module.
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
The embodiment of the present invention provides a kind of display module, please refers to Fig.1.
The display module includes light-emitting display panel (not marking), optical fingerprint sensor (not marking) and the dotted back of the body
Light source 130.
In the display module, light-emitting display panel includes first substrate 111, second substrate 112 and self-luminescence circuit
Layer 113.Self-luminescence circuit layer 113 is between first substrate 111 and second substrate 112.Light-emitting display panel further includes close
Seal structure 114.Sealing structure 114 also is located between first substrate 111 and second substrate 112.Sealing structure 114 and first substrate
111 and second substrate 112 together, self-luminescence circuit layer 113 is sealed between first substrate 111 and second substrate 112.
In the present embodiment, the material of first substrate 111 and second substrate 112 can be transparent material, and specific material can be with
Can also be other transparent organic resins other than organic glass for unorganic glass or organic glass.
In the light-emitting display panel, self-luminescence circuit layer 113 (is used including multiple display pixel cells 1131 in Fig. 1
Dotted line frame illustrates 1131 neighbouring relations of display pixel cells 1131 and each display pixel cells.Although being noted that dotted line
Frame includes part first substrate 111 and second substrate 112, but this is only to facilitate display, display pixel cells 1131 are simultaneously
Do not include first substrate 111 and second substrate 112).Each display pixel cells 1131 are including at least one alternatively non-transparent district and extremely
Lack a transparent area 11311, illustrating a transparent area 11311 in Fig. 1, (i.e. one of 11311 location of transparent area is such as
Shown in the range that minimum dotted line frame is surrounded in Fig. 1).
It should be noted that in other embodiments, the transparent areas 11311 of a display pixel cells 1131 can also with it is another
The transparent area 11311 of one display pixel cells 1131 links together, and forms the transparent area of a range bigger, at this point, this
Two display pixel cells 1131 be typically it is adjacent, also, two display pixel cells 1131 it is adjacent between region be also
Transparent area, so that three transparent areas are connected as a big transparent area.
In the present embodiment, the light-emitting display panel is OLED display panel, the display pixel of self-luminescence circuit layer 113
Unit 1131 may include anode layer, hole injection layer (HIL), luminescent layer (EML), electron injecting layer (EIL) and cathode layer etc.,
Can also have hole transmission layer (HTL) and electron transfer layer (ETL), can also include TFT, the driving metal wire of driving OLED
With storage capacitance etc..The principle of luminosity of OLED display panel is：Under certain voltage driving, electrons and holes are respectively from cathode layer
Luminescent layer is moved to anode layer, and is met in luminescent layer, exciton is formed and light emitting molecule is made to excite, light emitting molecule passes through spoke
It penetrates relaxation and sends out visible light (or other light).Wherein, the structures such as above-mentioned luminescent layer are located in corresponding alternatively non-transparent district.And
The display pixel cells 1131 on alternatively non-transparent district periphery, the present embodiment have corresponding transparent area 11311.
Self-luminescence circuit layer 113 is produced on second substrate 112 in the present embodiment, the self-luminescence circuit layer 113 and institute
Stating has void layer between first substrate 111.And the inert gases such as nitrogen or argon gas are filled in the void layer, to protect
The self-luminescence circuit layer 113 will not be damaged by pressure by first substrate 111.
Height of the height equal to self-luminescence circuit layer 113 of transparent area 11311 is arranged in the present embodiment, as shown in Figure 1, to
Ensure that light can pass through self-luminescence circuit layer 113 (it should be noted that each position of self-luminescence circuit layer 113 from transparent area
Height may slightly have difference, but at least partly height phase of the height of the self-luminescence circuit layer 113 of position and transparent area 11311
Deng).And light can pass through self-luminescence circuit layer 113 from transparent area, ensure that display module can carry out fingerprint image acquisition.
By above-mentioned void layer content it is found that light across the light-emitting display panel, generally comprise across second substrate 112,
Transparent area 11311, void layer and first substrate 111.
Specifically, having the semiconductor layer structures such as corresponding luminescent layer in the alternatively non-transparent district of a display pixel cells 1131
(these semiconductor layer structures needs are protected from light, and therefore, are produced on alternatively non-transparent district), and other positions could be provided as light transmission
Area, i.e., on the basis of ensureing the realization of corresponding construction and function, the other structures of display pixel cells 1131 can be as possible
It is made of translucent construction.Also, the structure between adjacent display pixels unit 1131 can also use translucent construction system as possible
Make.Meanwhile other than the display area where these display pixel cells 1131, such as in driving circuit and binding pin etc.
The production location of structure can also be arranged to corresponding transparent area, so that more light can pass through OLED display surfaces
Plate (this passes through and is often referred to pass through from the height of display pixel cells 1131, and height is usually alternatively referred to as thickness).
As shown in Figure 1, the optical fingerprint sensor is located at 112 lower section of second substrate.That is, the optical finger print
Sensor is located at below the light-emitting display panel.
As shown in Figure 1, the optical fingerprint sensor includes underlay substrate 121 and fingerprint sensing circuit layer 122, substrate base
For plate 121 between second substrate 112 and fingerprint sensing circuit layer 122, underlay substrate 121 is light-transmitting materials.
The fingerprint sensing circuit layer 122 of the optical fingerprint sensor includes multiple sensitive pixel elements (not shown).Often
A sensitive pixel elements may include transmission region and non-transparent region (in display pixel cells 1131 transparent area and
Alternatively non-transparent district is mutually distinguished).(photosensitive element can be the knots such as light sensitive diode to the photosensitive element of the sensitive pixel elements
Structure) it is located at the non-transparent region.
There is light-shielding structure (not shown) between the lower surface of fingerprint sensing circuit layer 122 and corresponding photosensitive element, with
Prevent photosensitive element from being influenced by the ambient light entered from 122 lower surface of fingerprint sensing circuit layer, that is, prevent ambient light from
122 lower surface of fingerprint sensing circuit layer enters, and is adversely affected to photosensitive element.The light-shielding structure can be flood knot
Structure can also be the shading discrete one by one for corresponding to photosensitive element one by one to block entire fingerprint sensing circuit layer 122
Block, only to carry out shading protection to photosensitive element.
In the present embodiment, the optical fingerprint sensor can be based on glass substrate with TFT (Thin Film
Transistor, thin film transistor (TFT)) technique make imaging sensor.At this point, underlay substrate 121 can be glass substrate.
In summary it is found that the optical fingerprint sensor in the present embodiment can be the TFT imaging sensors of back-illuminated type.
In the present embodiment, dotted backlight 130 is located at 112 lower section of second substrate, and dotted backlight 130 is located at the optics
The side of fingerprint sensor, the light that dotted backlight 130 is sent out enter second substrate 112 with angle obliquely.
Dotted backlight 130 is set to the side of the optical fingerprint sensor by the present embodiment, and dotted backlight 130 is sent out
The light gone out enters underlay substrate 121 with angle obliquely, from the side of underlay substrate 121, and oblique from underlay substrate 121
It is upper to enter second substrate 112.These light will continue to pass through self-luminescence circuit layer 113 with the angle of oblique incidence, to oblique incidence
Into first substrate 111.Also, light can be formed by interface in finger print and 111 upper surface of first substrate and occur instead
It the optical phenomenas such as penetrates and reflects, generate corresponding reflection light.By the principle of optical propagation it is found that reflection light usually will be same
First substrate 111 is returned obliquely with the angle of oblique incidence.These reflection lights will continue to wear obliquely with the angle of oblique incidence
Self-luminescence circuit layer 113 is crossed, to which oblique incidence enters second substrate 112.Then, reflection light continues oblique with the angle of oblique incidence
It is passed down through underlay substrate 121 and reaches fingerprint sensing circuit layer 122, and by the photosensitive pixel in fingerprint sensing circuit layer 122
Unit receives.For the area source using light guide plate, the setting of this dotted backlight 130 enables to light basic
Along the offset of the same direction (and the light of light guide plate is that all directions are mixed and disorderly, and offset direction is differed), avoid between light
Interfere with each other and influence each other (and can interfere with each other and influence between the light of light guide plate).Also, due to apart from the dotted back of the body
Light offset is close similar in 130 position of light source, it is thus possible to obtain clearly fingerprint image, improve the fingerprint recognition of module
Performance.
In the present embodiment, dotted backlight 130 can be a LED light.The light of the LED light can be black light,
Purple light, blue light, green light, sodium yellow, red light, near infrared light or white light.
As shown in Figure 1, in the display module, have between 112 lower surface of dotted backlight 130 and second substrate saturating
Optical cement 140, and light transmission glue simultaneously between dotted backlight 130 and the side of the optical fingerprint sensor.Namely
It says, at this point, there is light transmission glue 140 between dotted backlight 130 and the side of underlay substrate 121, what dotted backlight 130 was sent out
Light is directly entered light transmission glue 140 from the light-emitting surface of dotted backlight 140, then enters the side of underlay substrate 121 from light transmission glue 140
Face.
The light that the setting of light transmission glue 140 can be such that dotted backlight 130 sends out more preferably is incident to underlay substrate
Interface reflection is reduced in 121 side.The refractive index of light transmission glue 140 is more than 1, reduces the refraction into the light of underlay substrate 121
Amplitude.And if being not provided with light transmission glue, the light that dotted backlight is sent out needs after vacuum or air, enters back into substrate
The side of substrate 121, and light be easy to occur in this process the rough sledding such as reflection and scattering (light be easy in vacuum or
Air is formed by interface with 121 side of underlay substrate and the rough sledding such as reflection occurs, and air can also make some light
The rough sledding such as scattering occur for line).
In the present embodiment, 112 lower surface of second substrate further includes light shield layer 150 close to the region of dotted backlight 130, this
When, light transmission glue 140 is bonded 150 lower surface of side and light shield layer of underlay substrate 121.Meanwhile light transmission glue 140 can also cover
The side of fingerprint sensing circuit layer 122 and portion lower surface.
Light shield layer 150 is used to prevent light that dotted backlight 130 sends out from directly entering the from 112 lower surface of second substrate
Two substrates 112, to ensure that the light into second substrate 112 all is from underlay substrate 121.Light shield layer 150 can be one
A itself non-transparent solid structure, for example, metal layer.The thickness of light shield layer 150 can be set as needed at this time, usually
The bigger shaded effect of thickness is better.
In other embodiments, light shield layer may be used ink coating formed it is (such as directly corresponding in second substrate lower surface
Region coating ink coating is as light shield layer), other suitable materials and mode can also be used to be formed.
In the present embodiment, though it is not shown in Fig. 1, in the display module, the light-emitting display panel and the light
There can be optical cement between fingerprint sensor.The material of the optical adhesive layer can be specifically temperature-sensitive optical adhesive layer, photosensitive
Optical adhesive layer or optical double-sided adhesive tape band.The presence of the optical cement makes the light-emitting display panel be sensed with the optical finger print
Avoid further improving the optical property of module between device as possible there are air.
In other embodiments, the optical fingerprint sensor and the light-emitting display panel can be directly laminated, " straight
Connect stacking " refer to optical fingerprint sensor and light-emitting display panel and at least partly contacts, it is in flat knot when the two is overall
Can be precisely that form is laminated as shown in fig. 1 when structure.
It should be noted that OLED display panel and optical fingerprint sensor be directly laminated or with optics glue bond
In the case of, the distance that sensitive pixel elements to 111 upper surface of first substrate of optical fingerprint sensor is arranged in the present embodiment is smaller,
That is the distance of fingerprint sensing circuit layer 122 to 111 upper surface of first substrate is smaller, to ensure so that the fingerprint that fingerprint collecting obtains
Picture quality meets necessary requirement.
In the present embodiment, the area of the display pixel cells 1131 in OLED display panel is passed less than or equal to optical finger print
The area of sensitive pixel elements in sensor.
It, can be by a light-sensitive image in optical fingerprint sensor in the case of the first on the basis of above-mentioned area compares
The upper and lower position of display pixel cells 1131 in plain unit and OLED display panel is mapped, follow-up to better ensure that
Fingerprint image acquisition.Specifically, can be by one display pixel cells 1131 of a sensitive pixel elements face, and enable photosensitive
The area equation of the area and display pixel cells 1131 of pixel unit.The transparent area 11311 of display pixel cells 1131 is at least
Corresponding to the photosensitive element of sensitive pixel elements.Due to the two area equation, so the two can not also use positive alignment one by one, phase
There can also be certain dislocation between mutually.From the point of view of macroscopically, each sensitive pixel elements and display pixel cells 1131
Alignment relation is consistent, it is possible to ensure that transmitting (reflection) optical signal of each sensitive pixel elements received is uniform
's.
Can also be that multiple display pixel cells 1131 correspond to one in the case of the first on the basis of above-mentioned area compares
A sensitive pixel elements.That is, can be the sensitive pixel elements can correspond to two or two with
Upper display pixel cells 1131 (i.e. area of the area of sensitive pixel elements less than display pixel cells 1131).From macroscopically
It sees, the alignment relation of each sensitive pixel elements and two or more display pixel cells 1131 is consistent, so
It can ensure that transmitting (reflection) optical signal of each sensitive pixel elements received is uniform.
Principle of the display module that the present embodiment is provided when carrying out fingerprint collecting be：What dotted backlight 130 was sent out
After light is by light transmission glue 140, enter 121 side of underlay substrate obliquely, and enter second substrate 112 from underlay substrate 121；
Then enter the transparent area 11311 of self-luminescence circuit layer 113 from second substrate 112, and passed through obliquely certainly from transparent area 11311
Illuminating circuit layer 113 and enter first substrate 111；And in the present embodiment, first substrate 111 is directly used in the contact of finger print
Or pressing, therefore, the interface that light can be formed in 111 upper surface of first substrate and fingerprint occurs refraction, reflection and absorbs etc.
Various optical phenomenas accordingly have part reflection light and generate；Reflection light returns in first substrate 111, then from first substrate
Enter the transparent area 11311 of self-luminescence circuit layer 113 obliquely, and self-luminescence circuit layer is passed through obliquely from transparent area 11311
113, hence into second substrate 112；These reflection lights enter underlay substrate 121 from second substrate 112 again, and pass through substrate
Substrate 121 reaches fingerprint sensing circuit layer 122, and (specifically quilt is received by each sensitive pixel elements in fingerprint sensing circuit
The photosensitive element of sensitive pixel elements absorbs), by signal processing, realize the acquisition of corresponding fingerprint image.The specific above process
Light can be represented with reference to the black arrow (not marking) in Fig. 1, black arrow, but omits the corresponding refraction for indicating light
Process.
It in the above process, since dotted backlight 130 is located at the side of underlay substrate 121, is apparent from, corresponding light is
The incidence angle of two substrates, 112 lower surface is acute angle, and after light finally reflects, reflection light is in fingerprint sensing circuit layer 122
The incidence angle of upper surface is also acute angle.Therefore, at this point, the light that dotted backlight 130 is sent out can be by corresponding offset volume production
Raw corresponding fingerprint image, therefore, entire optical fingerprint sensor module does not need the structures such as light guide plate and collector lens, energy
Enough realize the identification of fingerprint image, also, the fingerprint image formed using the light source of light conducting plate structure than being more clear.
It should be noted that by above-mentioned principle it is found that current embodiment require that paying attention to enabling the light that dotted backlight 130 sends out
Line is all propagated obliquely, has prevented light from directly after entering underlay substrate 121, propagating to fingerprint sensing circuit layer downwards
122, interference is generated to the acquisition of fingerprint image.
In the display module that the present embodiment is provided, the optical fingerprint sensor and dotted backlight 130 are respectively positioned on certainly
112 lower section of second substrate, dotted backlight 130 are located at the optical fingerprint sensor side again in light emitting display panel, simultaneously
Light-emitting display panel has transparent area, therefore, can so that the light that dotted backlight 130 is sent out is aobvious back and forth through self-luminous
Show panel, so as to realize the acquisition to finger fingerprint image, also, collected fingerprint image is clear, makes display module
It is integrated with good fingerprint identification function.
In the display module that the embodiment of the present invention is provided, light is placed under light-emitting display panel (OLED display panel)
Fingerprint sensor is learned, and by corresponding application method, can realize and acquire fingerprint image in the display area of display module,
So as to reduce the electronic product apparent size using this display panel, the screen accounting of electronic product is improved, electronics is improved
The exterior aesthetics (such as the screen accounting of mobile phone products can be improved, improve the exterior aesthetics of mobile phone products) of product.
The embodiment of the present invention also provides a kind of application method of display module, and the display module is carried by previous embodiment
For therefore it may be referred to Fig. 1.By previous embodiment it is found that the display module includes light-emitting display panel, optical finger print
Sensor and dotted backlight 130.The light-emitting display panel includes first substrate 111, second substrate 112 and spontaneous photoelectricity
Road floor 113, for self-luminescence circuit layer 113 between first substrate 111 and second substrate 112, self-luminescence circuit layer 113 includes more
A display pixel cells 1131, each display pixel cells 1131 include at least one alternatively non-transparent district and at least one transparent area；
The optical fingerprint sensor is located at 112 lower section of second substrate, and the optical fingerprint sensor includes fingerprint sensing circuit layer 122
With underlay substrate 121, between second substrate 112 and fingerprint sensing circuit layer 122, underlay substrate 121 is underlay substrate 121
Light-transmitting materials；Dotted backlight 130 is located at 112 lower section of second substrate, and dotted backlight 130 is located at optical finger print biography
The side of sensor；The light that dotted backlight 130 is sent out enters substrate with angle obliquely, from the side of underlay substrate 121
Substrate 121, and enter second substrate 112 obliquely from underlay substrate 121.More structures and property in relation to the display module
It can refer to previous embodiment corresponding contents.
The application method that the present embodiment is provided includes：It will be opposite with optical fingerprint sensor in light-emitting display panel
Display area is defined as the first display area, and the display area of other parts is defined as the second display area；When optical finger print passes
When sensor carries out fingerprint image acquisition work, the first display area of control stops showing work.
In the present embodiment, the first display area is set, is the light of light-emitting display panel and dotted backlight in order to prevent
The light that source 130 is sent out interferes with each other.Stop showing that work, the present embodiment can allow to carry out by controlling the first display area
When fingerprint image acquisition, do not influenced by light-emitting display panel.
The application method that the present embodiment is provided further includes：When optical fingerprint sensor carries out fingerprint image acquisition work
When, the second display area of control shows information associated with fingerprint image acquisition work.For example, being shown in the second display area
" please in non-display area typing fingerprint " shows the letters such as " typing is correct " or " please typing again " in fingerprint Input Process
Breath can show information such as " effective fingerprints " when collecting correct fingerprint, or show according to fingerprinting operation " operate at
The message such as work(".This application method enables to display function and fingerprint identification function to cooperate, and realizes and preferably uses
Family usage experience.
The application method can also further open up the application scenarios of fingerprint identification function, for example, being passed in optical finger print
Before sensor is not worked, first display area is enabled to show that corresponding display icon, instruction user place a digit into figure
In mark.After user places a digit into display figure target area, using existing display panel itself or the touch-control work(of tyre
Can, perception user has placed a digit into the first display area, enters work shape so as to control optical fingerprint sensor
State completes fingerprint image at this point, the fingerprint image of pressing fingerprint can be acquired by the optical fingerprint sensor below the first display area
As acquisition function, and it is possible to further apply to be identified with the existing fingerprint image of internal reservoir, further use into
The functions such as row encryption/unlock.
Another embodiment of the present invention provides another display module, please refers to Fig.2.
The display module includes that protective layer 210, light-emitting display panel (not marking), optical fingerprint sensor (are not marked
Note) and dotted backlight 240.
In the display module, light-emitting display panel includes first substrate 221, second substrate 222 and self-luminescence circuit
Layer 223.Self-luminescence circuit layer 223 is between first substrate 221 and second substrate 222.Light-emitting display panel further includes close
Seal structure 224.Sealing structure 224 also is located between first substrate 221 and second substrate 222.Sealing structure 224 and first substrate
221 and second substrate 222 together, self-luminescence circuit layer 223 is sealed between first substrate 221 and second substrate 222.
In the display module, protective layer 210 is located at 221 top of the first substrate.With in Fig. 1 directly use the first base
Plate 111 is different as the structure that finger contacts, in the present embodiment, the structure contacted as finger using protective layer 210, and protect
Sheath 210 can play the structures such as protection light-emitting display panel, the optical fingerprint sensor and dotted backlight 240 simultaneously
Effect.
In the present embodiment, protective layer 210 is single layer structure, i.e., protective layer 210 can be a substrate, as shown in Figure 2.Its
In its embodiment, protective layer may be multilayered structure.
In the present embodiment, the material of first substrate 221 and second substrate 222 can be transparent material.
In the light-emitting display panel, self-luminescence circuit layer 223 (is used including multiple display pixel cells 2231 in Fig. 2
Dotted line frame illustrates the neighbouring relations of display pixel cells 2231).Each display pixel cells 2231 include at least one non-
Light area and at least one transparent area 22311 illustrate a transparent area 22311 (i.e. one of 22311 institute of transparent area in Fig. 2
Shown in the range that minimum dotted line frame is surrounded in range such as Fig. 2).
In the present embodiment, the light-emitting display panel is OLED display panel, and it is accordingly interior to can refer to Fig. 1 corresponding embodiments
Hold.
Height of the height equal to self-luminescence circuit layer 223 of transparent area 22311 is arranged in the present embodiment, as shown in Fig. 2, to
Ensure that light can pass through self-luminescence circuit layer 223 from transparent area.And light can pass through self-luminescence circuit layer from transparent area
223, it ensure that display module can carry out fingerprint image acquisition.
The concrete structure of display pixel cells 2231 can refer to Fig. 1 corresponding embodiment corresponding contents.
As shown in Fig. 2, the optical fingerprint sensor is located at 222 lower section of second substrate.That is, the optical finger print
Sensor is located at below the light-emitting display panel.
As shown in Fig. 2, the optical fingerprint sensor includes fingerprint sensing circuit layer 232 and underlay substrate 231, substrate base
Plate 231 is located between second substrate 222 and fingerprint sensing circuit layer 232, and underlay substrate 231 is light-transmitting materials, be can refer to
Fig. 1 corresponding embodiment corresponding contents.
The fingerprint sensing circuit layer of the optical fingerprint sensor includes multiple sensitive pixel elements (not shown), more
More structures can refer to Fig. 1 corresponding embodiment corresponding contents.
In the present embodiment, dotted backlight 240 is located at 222 lower section of second substrate, and dotted backlight 240 is located at the optics
The side of fingerprint sensor, the light that dotted backlight 240 is sent out with angle obliquely, from the side of underlay substrate 231 into
Enter underlay substrate 231, and enters second substrate 222 obliquely from underlay substrate 231.
Dotted backlight 240 is set to the side of the optical fingerprint sensor by the present embodiment, can be ensured for adopting
The reflection light for collecting fingerprint image must be (the i.e. oblique tripping in for entering the optical fingerprint sensor with the angle of oblique incidence
It injects into the optical fingerprint sensor, detailed process can refer to Fig. 1 corresponding embodiments corresponding contents).Compared to using guide-lighting
For the area source of plate, the setting of this dotted backlight 240 enables to light substantially (and guide-lighting along the offset of the same direction
The light of plate is that all directions are mixed and disorderly, and offset direction is differed), avoid interfering with each other and influencing each other between light (and
Can interfere with each other and influence between the light of light guide plate), also, the light offset similar in 240 position of dotted backlight
It is close, so as to obtain clearly fingerprint image, improve the fingerprint recognition performance of module.
In the present embodiment, dotted backlight 240 can be a LED light.The light of the LED light can be black light,
Purple light, blue light, green light, sodium yellow, red light, near infrared light or white light.
As shown in Fig. 2, in the display module, there is light transmission glue between dotted backlight 240 and second substrate 222
250, light transmission glue 250 also is located between dotted backlight 240 and the side of underlay substrate 231 simultaneously.Dotted backlight 240 is sent out
Light be directly entered light transmission glue 250 from the light-emitting surface of dotted backlight 240, then be directly entered underlay substrate from light transmission glue 250
231 side.The light that the setting of light transmission glue 250 can be such that dotted backlight 240 sends out more preferably is incident to substrate base
Interface reflection is reduced in the side of plate 231.The refractive index of light transmission glue 250 is more than 1, reduces the light into 231 side of underlay substrate
Refraction amplitude.And if being not provided with light transmission glue, the light that dotted backlight is sent out needs after vacuum or air, then into
Enter the side of underlay substrate 231, and light is easier to reflect in the interface that vacuum or air are formed with second substrate surface
The case where, and air can also make some light that the adverse effects such as scattering occur.
In the present embodiment, 222 lower surface of second substrate further includes light shield layer 260 close to the region of dotted backlight 240, this
When, light transmission glue 250 is bonded 260 lower surface of side and light shield layer of underlay substrate 231.
In the present embodiment, though it is not shown in Fig. 2, in the display module, the light-emitting display panel and the light
There can be optical cement between fingerprint sensor, it can be with 1 corresponding embodiment corresponding contents of reference chart.
In the present embodiment, though it is not shown in Fig. 2, in the display module, the light-emitting display panel and protective layer
Can have optical cement, the presence of the optical cement to avoid between the light-emitting display panel and protective layer 210 between 210
There are the possibility of air, so that the optical property of display module is more preferable.
It should be noted that OLED display panel and the optical fingerprint sensor be directly laminated or with optics gluing
In the case of conjunction, the sensitive pixel elements of the optical fingerprint sensor are arranged to 221 upper surface of first substrate in the present embodiment
Distance is smaller, to ensure so that the fingerprint image quality that fingerprint collecting obtains meets necessary requirement.
In the present embodiment, though do not shown in figure, can by the optical fingerprint sensor sensitive pixel elements and
The upper and lower position of display pixel cells 2231 in OLED display panel is mapped, to better ensure that subsequent fingerprint image
As acquisition.One sensitive pixel elements can be corresponded to four display pixel cells 2231, and enable the area of sensitive pixel elements
Equal to the area of four display pixel cells 2231.
The display module that the present embodiment is provided is when carrying out fingerprint collecting, principle major part and Fig. 1 corresponding embodiments
Principle it is identical, the difference is that, light will continue to before not reaching finger print from first substrate in the present embodiment
Refraction and instead occurs for the 221 oblique interfaces for travelling over to protective layer 210, and being formed in 210 upper surface of protective layer and finger print
It the optical phenomenas such as penetrates, then generates the reflection light for returning to protective layer 210 obliquely again.The specific above process can be with reference to
Black arrow (not marking) in Fig. 2, black arrow represents light, but omits the corresponding refracting process for indicating light.
It should be noted that in other embodiments, can have collector lens, optically focused before the light-emitting surface of dotted backlight
Lens can make the light of dotted backlight be converted to directional light or nearly directional light, and (the nearly directional light refers to the angle between light
Difference is less than 10 degree), the light of dotted backlight is introduced into collector lens, enters back into the side of underlay substrate.Collector lens
Setting can further avoid the problem of fingerprint image is distorted.
It should be noted that in other embodiments, dotted backlight can be more than two LED light, more than two LED light
It is evenly distributed on the lower section of second substrate, the light of LED light is black light, purple light, blue light, green light, sodium yellow, red
Light, near infrared light or white light.For example, the dotted backlight can be four LED light, four LED light are evenly distributed on the
The lower section of two substrates, while being evenly distributed on the optical fingerprint sensor side or four lamps while being evenly distributed on institute
On the outside of four angles for stating optical fingerprint sensor.At this point, although the light that four LED light are sent out may be each non-parallel
Light, but simultaneously utilize this four LED light, may be implemented to it is non-parallel smooth when pattern distortion correction.Specifically, four
LED light can take adopt in turn figure (adopt in turn figure refer to four lamps chronologically successively carry out adopting figure respectively) mode, then pass through
Image procossing does distortion correction, improves fingerprint image quality, improves fingerprint recognition accuracy.Certainly, when dotted backlight is more
In the case of a LED light, when carrying out fingerprint image acquisition, the light of any one LED light can be selected as fingerprint image
Imaging light, the present embodiment is similar with the imaging effect of Fig. 1 corresponding embodiments at this time.
The structure and advantage for the display module that more the present embodiment are provided can be accordingly interior with 1 corresponding embodiment of reference chart
Hold.
Another embodiment of the present invention also provides the application method of another display module, and the display module is previous implementation
Example is provided, therefore it may be referred to Fig. 2.By previous embodiment it is found that the display module include protective layer 210, it is described spontaneous
Light display panel, the optical fingerprint sensor and dotted backlight 240.The light-emitting display panel includes first substrate
221, second substrate 222 and self-luminescence circuit layer 223.Self-luminescence circuit layer 223 is located at first substrate 221 and second substrate 222
Between, self-luminescence circuit layer 223 includes multiple display pixel cells 2231.Each display pixel cells 2231 include at least one
Alternatively non-transparent district and at least one transparent area 22311,.The optical fingerprint sensor is located at 221 lower section of second substrate, the optics
Fingerprint sensor includes fingerprint sensing circuit layer 232 and underlay substrate 231, and underlay substrate 231 is located at second substrate 222 and fingerprint
Between sensing circuit layer 232, underlay substrate 231 is light-transmitting materials.Dotted backlight 240 is located at 222 lower section of second substrate, and
Dotted backlight 240 is located at the side of the optical fingerprint sensor.The light that dotted backlight 240 is sent out is with angle obliquely
Degree enters second substrate 222.More the structure in relation to the display module and property can refer to previous embodiment corresponding contents.
The application method that the present embodiment is provided includes：By in light-emitting display panel with the optical fingerprint sensor phase
To display area be defined as the first display area, the display area of other parts is defined as the second display area；When the light
When learning fingerprint sensor progress fingerprint image acquisition work, the first display area of control stops showing work.
Stop showing work by controlling the first display area, when the present embodiment can allow to carry out fingerprint image acquisition,
It is not influenced by light-emitting display panel.
The application method that the present embodiment is provided further includes：When the optical fingerprint sensor carries out fingerprint image acquisition work
When making, the second display area of control shows information associated with fingerprint image acquisition work.For example, aobvious in the second display area
Show " please in non-display area typing fingerprint ", in fingerprint Input Process, shows " typing is correct " or " please typing again " etc.
Information can show information such as " effective fingerprints ", or show " operation according to fingerprinting operation when collecting correct fingerprint
The message such as success ".This application method enables to display function and fingerprint identification function to cooperate, and realizes better
User experience.
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of display module, including：
Light-emitting display panel, the light-emitting display panel include first substrate, second substrate and self-luminescence circuit layer, described
For self-luminescence circuit layer between the first substrate and the second substrate, the self-luminescence circuit layer includes multiple display pictures
Plain unit；
It is characterized in that,
Each display pixel cells include at least one alternatively non-transparent district and at least one transparent area；
Further include：
Optical fingerprint sensor, the optical fingerprint sensor are located at below the second substrate, the optical fingerprint sensor
Including fingerprint sensing circuit layer and underlay substrate, the underlay substrate is located at the second substrate and the fingerprint sensing circuit layer
Between, the underlay substrate is light-transmitting materials；
Dotted backlight, the dotted backlight are located at below second substrate, and the dotted backlight is located at the optical finger print
The side of sensor, the light that the dotted backlight is sent out with angle obliquely,
Enter the underlay substrate from the side of the underlay substrate, and enters second base obliquely from the underlay substrate
Plate.
2. display module as described in claim 1, which is characterized in that further include protective layer, the protective layer is located at described the
Above one substrate.
3. display module as claimed in claim 1 or 2, which is characterized in that the second substrate lower surface is close to described dotted
The region of backlight further includes light shield layer.
4. display module as claimed in claim 3, which is characterized in that the side of the dotted backlight and the underlay substrate
Between have light transmission glue, the light that the dotted backlight is sent out from the light-emitting surface of the dotted backlight enter the light transmission
Glue, then from the light transmission glue into the side of the underlay substrate.
5. display module as claimed in claim 4, which is characterized in that the side of underlay substrate described in the light transmission glue sticking and
The light shield layer lower surface.
6. display module as claimed in claim 1 or 2, which is characterized in that have before the light-emitting surface of the dotted backlight
Collector lens, the collector lens can make the light of the dotted backlight be converted to directional light or nearly directional light, the point
The light of shape backlight is introduced into the collector lens, enters back into the side of the underlay substrate.
7. display module as claimed in claim 2, which is characterized in that the light-emitting display panel is passed with the optical finger print
There is optical cement between sensor；There is optical cement between the light-emitting display panel and the protective layer.
8. display module as claimed in claim 1 or 2, which is characterized in that the dotted backlight is a LED light, described
The light of LED light is black light, purple light, blue light, green light, sodium yellow, red light, near infrared light or white light；Alternatively,
The dotted backlight is more than two LED light, and described two above LED light are evenly distributed on the lower section of the second substrate,
The light of the LED light is black light, purple light, blue light, green light, sodium yellow, red light, near infrared light or white light.
9. a kind of application method of display module, which is characterized in that
The display module includes：
Light-emitting display panel, the light-emitting display panel include first substrate, second substrate and self-luminescence circuit layer, described
For self-luminescence circuit layer between the first substrate and the second substrate, the self-luminescence circuit layer includes multiple display pictures
Plain unit, each display pixel cells include at least one alternatively non-transparent district and at least one transparent area；Optical fingerprint sensor, institute
It states optical fingerprint sensor to be located at below the second substrate, the optical fingerprint sensor includes fingerprint sensing circuit layer and lining
Substrate,
The underlay substrate is between the second substrate and the fingerprint sensing circuit layer；Dotted backlight, it is described dotted
Backlight is located at below second substrate, and the dotted backlight is located at the side of the optical fingerprint sensor, the dotted back of the body
The light that light source is sent out enters the underlay substrate with angle obliquely, from the side of the underlay substrate, and from the lining
Substrate enters the second substrate obliquely；
The application method includes：
Display area opposite with the optical fingerprint sensor in the light-emitting display panel is defined as the first viewing area
The display area in domain, other parts is defined as the second display area；
When the optical fingerprint sensor carries out fingerprint image acquisition work, controls first display area and stop showing work
Make.
10. application method as claimed in claim 9, which is characterized in that further include：When the optical fingerprint sensor is referred to
When print image collecting work, controls second display area and show information associated with fingerprint image acquisition work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131247.2A CN108614983A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
| PCT/CN2017/073616 WO2018103195A1 (en) | 2016-12-09 | 2017-02-15 | Display module and usage method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131247.2A CN108614983A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108614983A true CN108614983A (en) | 2018-10-02 |
Family
ID=62491758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611131247.2A Pending CN108614983A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
Country Status (2)
| Country | Link |
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| CN (1) | CN108614983A (en) |
| WO (1) | WO2018103195A1 (en) |
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| CN109979326A (en) * | 2019-03-23 | 2019-07-05 | 深圳阜时科技有限公司 | A kind of display device and electronic equipment |
| CN109977852A (en) * | 2019-03-23 | 2019-07-05 | 深圳阜时科技有限公司 | A kind of sensing mould group, display device and electronic equipment |
| CN110032950A (en) * | 2019-03-23 | 2019-07-19 | 深圳阜时科技有限公司 | A kind of pedestal and sensing mould group |
| CN111552108A (en) * | 2020-06-08 | 2020-08-18 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
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| CN110837759B (en) * | 2018-08-17 | 2023-05-12 | 上海箩箕技术有限公司 | Optical fingerprint sensor device and method of assembling the same |
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| WO2018103195A1 (en) | 2018-06-14 |
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