CN108227973A - Display module and its application method - Google Patents
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- CN108227973A CN108227973A CN201611131880.1A CN201611131880A CN108227973A CN 108227973 A CN108227973 A CN 108227973A CN 201611131880 A CN201611131880 A CN 201611131880A CN 108227973 A CN108227973 A CN 108227973A
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Image Input (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
A kind of display module and its application method.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；It further includes：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 fingerprint sensing circuit layer is between second substrate and underlay substrate；Dotted backlight, dotted backlight are located at below second substrate, and dotted backlight is located at the side of optical fingerprint sensor, and the light that dotted backlight is sent out enters second substrate with angle obliquely.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 realize 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, mostly collected using the display module of capacitance type fingerprint imaging technique and Organic Light Emitting Diode
Into.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
It is of the invention to solve the problems, such as to be to provide a kind of display module, 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 module, 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；It further includes：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 finger
Line sensing circuit layer is between the second substrate and the underlay substrate；Dotted backlight, the dotted backlight are located at
Below second substrate, the dotted backlight is located at the side of the optical fingerprint sensor, what the dotted backlight was sent out
Light enters 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 is sent out between the dotted backlight and the second substrate
Light enter the light transmission glue, then enter the second substrate from the light transmission glue from the light-emitting surface of the dotted backlight.
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 second substrate.
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 Yi Shang 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.
To solve the above problems, the present invention also provides a kind of application method 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,
Second display area is controlled to show and the associated information of 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
Transparent area is provided with, therefore, can cause the light that dotted backlight is sent out 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, integrates display module
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 the second display area is controlled to show
Show with the associated information of 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 embodiment
As described in background, the prior art is mostly using the aobvious of capacitance type fingerprint imaging technique and Organic Light Emitting Diode
Show that module is integrated.
For this purpose, the present invention is provided in a kind of display module, optical fingerprint sensor and light-emitting display panel are integrated in
Together, so as to while display is realized, 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, make
Obtain user has better usage experience to display module.
It is understandable for the above objects, features and advantages of the present invention is enable to become apparent, 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
For other transparent organic resins other than unorganic glass or organic 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 it is 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 be OLED display panel, the display pixel of self-luminescence circuit layer 113
Unit 1131 can 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), TFT, the driving metal wire of driving OLED can also be included
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, and meet in luminescent layer with anode layer, form exciton and excite light emitting molecule, light emitting molecule passes through spoke
It penetrates relaxation and sends out visible ray (or other light).Wherein, the structures such as above-mentioned luminescent layer are located in corresponding alternatively non-transparent district.And
Alternatively non-transparent district periphery, the display pixel cells 1131 of 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.
The height of the present embodiment setting transparent area 11311 is equal to the height of self-luminescence circuit layer 113, as shown in Figure 1, so as 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 the height of the self-luminescence circuit layer 113 of at least part position and the height phase of 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, there are 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 the realization of corresponding construction and function is ensured, 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 the height being often referred to from display pixel cells 1131 to pass through, 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 fingerprint sensing circuit layer 121 and underlay substrate 122, fingerprint sense
Slowdown monitoring circuit layer 121 is between second substrate 112 and underlay substrate 122.
The fingerprint sensing circuit layer 121 of the optical fingerprint sensor includes multiple sensitive pixel elements (not shown).
In the case of one of which, each sensitive pixel elements can include transmission region and non-transparent region (with display pixel list
Transparent area in member 1131 is mutually distinguished with alternatively non-transparent district).(photosensitive element can be with for the photosensitive element of the sensitive pixel elements
For structures such as light sensitive diodes) positioned at the non-transparent region.In another case, due to fingerprint sensing circuit layer 121
Between second substrate 112 and underlay substrate 122, therefore, sensitive pixel elements can also be completely without transmission region, and only
There is non-transparent region, but need to ensure that light can enter corresponding photosensitive element obliquely from second substrate 112.
In the present embodiment, the optical fingerprint sensor can be with CMOS (Complementary based on Silicon Wafer
Metal Oxide Semiconductor, complementary metal oxide semiconductor) technique make imaging sensor or
The imaging sensor made based on glass substrate with TFT (Thin Film Transistor, thin film transistor (TFT)) technique.
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, so as to make dotted backlight
Light that source 130 is sent out, for fingerprint image acquisition, must enter second substrate 112 with the angle of oblique incidence.These light
Line will continue to pass through self-luminescence circuit layer 113 with the angle of oblique incidence, so as to which oblique incidence enters first substrate 111.Also, these
In the interface that finger print and 111 upper surface of first substrate are formed the optical phenomenas such as reflection and refraction, production can occur for light
Raw corresponding reflection light.By the principle of optical propagation it is found that reflection light usually by equally with the angle of oblique incidence obliquely
Return to first substrate 111.These reflection lights will continue to pass through self-luminescence circuit layer 113 obliquely with the angle of oblique incidence, from
And oblique incidence enters second substrate 112.The angle for then proceeding to oblique incidence reaches the optical fingerprint sensor (i.e. tiltedly obliquely
It is incident downwards to enter the optical fingerprint sensor), and received by the sensitive pixel elements in optical fingerprint sensor.Compared to
For the area source of light guide plate, the setting of this dotted backlight 130 enables to light substantially inclined along same direction
(and the light of light guide plate is that all directions are mixed and disorderly, and offset direction is differed) is moved, avoids interfering with each other between light and phase
(and can interfere with each other and influence between the light of light guide plate) mutually is influenced, also, apart from light similar in dotted 130 position of backlight
Line deviation is close, so as to obtain clearly fingerprint image, improves the fingerprint recognition performance of module.
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, there is light transmission glue between dotted backlight 130 and second substrate 112
140, the light-emitting surface of the light that dotted backlight 130 is sent out from dotted backlight 130 enters light transmission glue 140, then from light transmission glue 140
Into second substrate 112.The light that the setting of light transmission glue 140 can send out dotted backlight 130 is more preferably incident to
Second substrate 112 reduces interface reflection, and the refractive index of light transmission glue 140 is more than 1, reduces the folding into the light of second substrate 112
Penetrate amplitude.And if being not provided with light transmission glue, the light that dotted backlight is sent out is needed after vacuum or air, enters back into
Two substrates 112, and (light is easily in vacuum or air for the rough sledding such as reflection easily occurs in this process for light and scatters
The rough sledding such as reflection occur, and air can also cause some light to occur to dissipate with the interface that second substrate 112 is formed
The rough sledding such as penetrate).
In the present embodiment, light transmission glue 140 also is able to play the role of fixed dotted backlight 130, i.e., light transmission glue 140 can
It is bonded dotted backlight 130.The material of light transmission glue 140 can select the good material of light transmission.And it is possible to pass through control
The volume of light transmission glue 140 so that the light that dotted backlight 130 is sent out all enters back into second substrate by light transmission glue 140
112, avoid other routes of transmission of light.
In the display module, there is interval (not marking) between dotted backlight 130 and the optical fingerprint sensor.
The presence at the interval can ensure to be not directly contacted between dotted backlight 130 and the optical fingerprint sensor.Described
Every specific size can according to the design needs depending on.Such as in one example, the size at the interval can be more than or wait
In the width of the dotted backlight 130.
In other embodiments, can also it be spaced between dotted backlight 130 and the optical fingerprint sensor, i.e. point
Shape backlight 130 and the side of the optical fingerprint sensor are in direct contact.
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
It is avoided as possible there are air between device, further improves the optical property of module.
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 contact, when it is both overall be in flat structure
When, can be precisely that form is laminated as shown in fig. 1.
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 sensitive pixel elements of the present embodiment setting optical fingerprint sensor to the in small distance of 111 upper surface of first substrate,
To ensure so that the fingerprint image quality that fingerprint collecting obtains 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 the comparison of above-mentioned area
The upper-lower position of a display pixel cells 1131 in plain unit and OLED display panel is mapped, so as to better ensure that
Subsequent fingerprint image acquisition.Specifically, can be by one display pixel cells 1131 of a sensitive pixel elements face, and enable
The area of sensitive pixel elements and the area equation of display pixel cells 1131.The transparent area 11311 of display pixel cells 1131
At least correspond to the photosensitive element of sensitive pixel elements.Due to the two area equation, so the two can not also use face one by one
Together, there can also be certain dislocation each other.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 transmitting (reflection) optical signal received of each sensitive pixel elements
It is uniform.
On the basis of the comparison of above-mentioned area, under the second situation or multiple display pixel cells 1131 correspond to one
A sensitive pixel elements.That is, it is aobvious to be that the sensitive pixel elements correspond to two or more
Show pixel unit 1131 (i.e. the area of sensitive pixel elements is less than the area of display pixel cells 1131).From the point of view of macroscopically,
The alignment relation of each sensitive pixel elements and two or more display pixel cells 1131 is consistent, it is possible to
Ensure that transmitting (reflection) optical signal received of each sensitive pixel elements 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, obliquely into second substrate 112, and enter self-luminescence circuit layer 113 from second substrate 112
Transparent area 11311, then from transparent area 11311 obliquely pass through self-luminescence circuit layer 113 and enter first substrate 111；And this
In embodiment, first substrate 111 is directly used in the contact or pressing of finger print, and therefore, light can be in 111 upper table of first substrate
The various optical phenomenas such as refraction, reflection and absorption occur for the interface that face and fingerprint are formed, and accordingly have part reflection light production
It is raw；Reflection light is returned in first substrate 111, then enters the transparent area of self-luminescence circuit layer 113 obliquely from first substrate
11311, and self-luminescence circuit layer 113 is passed through obliquely from transparent area 11311, hence into second substrate 112, then from the second base
Plate 112 enters fingerprint sensing circuit layer 121, and (specifically quilt is received by each sensitive pixel elements in fingerprint sensing circuit 121
The photosensitive element of sensitive pixel elements absorbs), by signal processing, realize the acquisition of corresponding fingerprint image.The specific above process
Can be with reference to the black arrow (not marking) in Fig. 1, black arrow represents light, but omits the corresponding refraction for representing light
Process.
In the above process, since dotted backlight 130 is located at 121 side of fingerprint sensing circuit layer, it is apparent from, corresponding light
Incidence angle in 112 lower surface of second substrate is acute angle, and after light finally reflects, reflection light is in fingerprint sensing circuit layer
The incidence angle of 121 upper surfaces is also acute angle.Therefore, at this point, the light that dotted backlight 130 is sent out can be by corresponding offset
Corresponding fingerprint image is generated, therefore, entire optical fingerprint sensor module does not need to the structures such as light guide plate and collector lens, just
It can realize the identification of fingerprint image, also, the fingerprint image formed using the light source of light conducting plate structure than being more clear.
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, the light that dotted backlight 130 is sent out can be caused to be shown 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, improves electronics
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.Light-emitting display panel includes first substrate 111, second substrate 112 and self-luminescence circuit layer
113, between first substrate 111 and second substrate 112, self-luminescence circuit layer 113 includes multiple aobvious self-luminescence circuit layer 113
Show pixel unit 1131, each display pixel cells 1131 include at least one alternatively non-transparent district and at least one transparent area, light transmission
The height in area is equal to the height of self-luminescence circuit floor 113.Optical fingerprint sensor is located at 112 lower section of second substrate, optical finger print
Sensor includes fingerprint sensing circuit layer 121 and underlay substrate 122, and fingerprint sensing circuit layer 121 is located at second substrate 112 and lining
Between substrate 122.Dotted backlight 130 is located at 112 lower section of second substrate, and dotted backlight 130 is located at optical finger print sensing
The side of device, the light that dotted backlight 130 is sent out enter second substrate 112 with angle obliquely.It is more related described aobvious
Show that the structure of module and property 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.By the way that the first display area is controlled to stop showing work, the present embodiment can allow to carry out
During 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 is shown and the associated information of fingerprint image acquisition work.For example, it is shown in the second display area
" please in non-display area typing fingerprint " in fingerprint Input Process, shows the letters such as " typing is correct " or " please typing again "
Breath, when collecting correct fingerprint, can show information such as " effective fingerprints " or be shown according to fingerprinting operation and " operate into
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 corresponding display icon, instruction user places 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, it perceives user and has placed a digit into the first display area, so as to which optical fingerprint sensor is controlled to enter work shape
State at this point, the fingerprint image of pressing fingerprint can be acquired by the optical fingerprint sensor below the first display area, completes fingerprint image
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 protective layer 210, light-emitting display panel (not marking), 230 and of optical fingerprint sensor
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 first substrate.With directly using the first base in Fig. 1
The structure that plate 111 is contacted as finger is different, in the present embodiment, the structure that is contacted using protective layer 210 as finger, and protect
Sheath 210 can play the structures such as protection light-emitting display panel, optical fingerprint sensor 230 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.
The height of the present embodiment setting transparent area 22311 is equal to the height of self-luminescence circuit layer 223, as shown in Fig. 2, so as 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, optical fingerprint sensor 230 is located at 222 lower section of second substrate.That is, optical finger print senses
Device 230 is located at below the light-emitting display panel.
As shown in Fig. 2, optical fingerprint sensor 230 includes fingerprint sensing circuit layer (not shown) and underlay substrate (does not show
Go out), it is accordingly interior to can refer to Fig. 1 corresponding embodiments between second substrate 222 and underlay substrate for the fingerprint sensing circuit layer
Hold.
The fingerprint sensing circuit layer of optical fingerprint sensor 230 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 optical finger print
The side of sensor 230, the light that dotted backlight 240 is sent out enter second substrate 222 with angle obliquely.
Dotted backlight 240 is set to the side of optical fingerprint sensor 230 by the present embodiment, can ensure to acquire
The reflection light of fingerprint image must enter optical fingerprint sensor 230 with the angle of oblique incidence (to enter to inject obliquely
Enter optical fingerprint sensor 230, detailed process can refer to Fig. 1 corresponding embodiments corresponding contents).Compared to the face using light guide plate
For light source, the setting of this dotted backlight 240 enables to light substantially along same direction offset (and the light of light guide plate
Line is that all directions are mixed and disorderly, and offset direction is differed), avoid (and the light guide plate of interfering with each other and influencing each other between light
Light between can interfere with each other and influence), it is also, close apart from light offset similar in dotted 240 position of backlight, from
And clearly fingerprint image can be obtained, 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.
It should be noted that in other embodiments, dotted backlight can be more than two LED light, more than two LED light
The lower section of second substrate is evenly distributed on, 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 it is evenly distributed on 230 side of optical fingerprint sensor or four lamps are evenly distributed on optics simultaneously
Four angles of fingerprint sensor 230.At this point, although the light that four LED light are sent out may be each non-parallel light, together
This four LED light of Shi Liyong, can realize to it is non-parallel smooth when pattern distortion correction.Specifically, four LED light can adopt
Take adopt in turn figure (adopt in turn figure refer to four lamps chronologically successively carry out adopting figure respectively) mode, then by image procossing, do
Distortion correction improves fingerprint image quality, improves fingerprint recognition accuracy.Certainly, when the feelings that dotted backlight is multiple LED light
Under condition, when carrying out fingerprint image acquisition, the light of any one LED light can be selected as the imaging light of fingerprint image,
The present embodiment is similar with the imaging effect of Fig. 1 corresponding embodiments at this time.
As shown in Fig. 2, in the display module, there is light transmission glue between dotted backlight 240 and second substrate 222
250, the light-emitting surface of the light that dotted backlight 240 is sent out from dotted backlight 240 enters light transmission glue 250, then from light transmission glue 250
Into second substrate 222.The light that the setting of light transmission glue 250 can send out dotted backlight 240 is more preferably incident to
Second substrate 222 reduces interface reflection, and the refractive index of light transmission glue 250 is more than 1, reduces the folding into the light of second substrate 222
Penetrate amplitude.And if being not provided with light transmission glue, the light that dotted backlight is sent out is needed after vacuum or air, enters back into
Two substrates, and light is easier to there is a situation where reflecting, and air at the interface that vacuum or air are formed with second substrate surface
It can also cause some light that the adverse effects such as scattering occur.
In the display module, there is interval (not marking) between dotted backlight 240 and optical fingerprint sensor 230,
It can be with 1 corresponding embodiment corresponding contents of reference chart.
In the present embodiment, though not shown in Fig. 2, in the display module, the light-emitting display panel refers to optics
There can be optical cement between line sensor 230, 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
There can be optical cement between 210, the presence of the optical cement is avoided between the light-emitting display panel and protective layer 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 optical fingerprint sensor 230 be directly laminated or with optics gluing
In the case of conjunction, the present embodiment setting optical fingerprint sensor 230 sensitive pixel elements to 221 upper surface of first substrate away from
From 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 sensitive pixel elements in optical fingerprint sensor 230 and
The upper-lower position of display pixel cells 2231 in OLED display panel is mapped, so as 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 lies in light will continue to before finger print is not reached from first substrate in the present embodiment
221 oblique travel over to protective layer 210, and refraction and instead occurs at the interface that 210 upper surface of protective layer and finger print are formed
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 representing light.
In the present embodiment, also there is light antireflection layer 260, light antireflection layer in light transmission glue 250 and 222 lower surface of second substrate
260 light that can increase dotted backlight 240 enter the ratio of second substrate 222, therefore, are carrying out fingerprint image acquisition
When, the acquisition of fingerprint image can be carried out using more light, so as to obtain clarity and the higher fingerprint image of accuracy, into
One step improves the performance of display module.
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 second substrate.The setting of collector lens can
Further to avoid the problem that fingerprint image is distorted.
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 includes protective layer 210, described spontaneous
Light display panel, optical fingerprint sensor 230 and dotted backlight 240.Light-emitting display panel includes first substrate 221, the
Two substrates 222 and self-luminescence circuit layer 223, self-luminescence circuit layer 223 is between first substrate 221 and second substrate 222, certainly
Illuminating circuit layer 223 includes multiple display pixel cells 2231, and each display pixel cells 2231 include at least one non-transparent
Area and at least one transparent area, the height of transparent area are equal to the height of self-luminescence circuit layer 223.Optical fingerprint sensor 230
In 222 lower section of second substrate, optical fingerprint sensor 230 includes the fingerprint sensing circuit layer and underlay substrate 222, the finger
Line sensing circuit layer is between second substrate 222 and underlay substrate 222.Dotted backlight 240 is located under second substrate 222
Side, dotted backlight 240 be located at the side of optical fingerprint sensor 230, and the light that dotted backlight 240 is sent out is with obliquely
Angle 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 230 phase of optical fingerprint sensor
To display area be defined as the first display area, the display area of other parts is defined as the second display area；When optics refers to
When line sensor 230 carries out fingerprint image acquisition work, the first display area of control stops showing work.
By the way that the first display area is controlled to stop showing work, 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 optical fingerprint sensor 230 carries out fingerprint image acquisition work
When making, the second display area of control is shown and the associated information of fingerprint image acquisition work.For example, it is shown in the second display area
Show " please in non-display area typing fingerprint ", in fingerprint Input Process, show " typing is correct " or " please typing again " etc.
Information when collecting correct fingerprint, can show information such as " effective fingerprints " or show " operation according to fingerprinting operation
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 includes 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；
It further includes：
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 fingerprint sensing circuit layer is located at the second substrate and the underlay substrate
Between；
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 enter the second substrate with angle obliquely.
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
One surface.
3. display module as claimed in claim 1 or 2, which is characterized in that the dotted backlight and the second substrate it
Between there is light transmission glue, the light that the dotted backlight is sent out enters the light transmission glue from the light-emitting surface of the dotted backlight,
Enter the second substrate from the light transmission glue again.
4. display module as claimed in claim 1 or 2, which is characterized in that the dotted backlight is passed with the optical finger print
There is interval between sensor.
5. 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 second substrate.
6. 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 antireflection layer, and the light that the smooth antireflection layer can increase the dotted backlight enters described the
The ratio of two substrates.
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 Yi Shang 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 includes 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 finger print senses
Device, the optical fingerprint sensor are located at below the second substrate, and the optical fingerprint sensor includes fingerprint sensing circuit
Layer and underlay substrate, the fingerprint sensing circuit layer is between the second substrate and the underlay substrate；Dotted backlight,
The dotted backlight is located at below second substrate, and the dotted backlight is located at the side of the optical fingerprint sensor, institute
It states the light that dotted backlight is sent out and the second substrate is entered with angle 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
Domain, the display area of other parts are defined as the second display area；
When the optical fingerprint sensor carries out fingerprint image acquisition work, first display area is controlled to 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
During print image collecting work, second display area is controlled to show and the associated information of fingerprint image acquisition work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131880.1A CN108227973A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
| PCT/CN2017/073617 WO2018103196A1 (en) | 2016-12-09 | 2017-02-15 | Display module and usage method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131880.1A CN108227973A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108227973A true CN108227973A (en) | 2018-06-29 |
Family
ID=62491764
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611131880.1A Pending CN108227973A (en) | 2016-12-09 | 2016-12-09 | Display module and its application method |
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| Country | Link |
|---|---|
| CN (1) | CN108227973A (en) |
| WO (1) | WO2018103196A1 (en) |
Cited By (2)
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| CN109299708A (en) * | 2018-11-30 | 2019-02-01 | 上海箩箕技术有限公司 | Optical fingerprint sensor mould group and forming method thereof |
| CN110458124A (en) * | 2019-08-16 | 2019-11-15 | 深圳阜时科技有限公司 | Optical detection apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109564629B (en) * | 2018-10-15 | 2023-07-11 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and terminal equipment with fingerprint identification function |
| CN110785771B (en) * | 2019-01-22 | 2023-09-08 | 深圳市汇顶科技股份有限公司 | Under-screen optical fingerprint identification system, fingerprint identification display device and electronic equipment |
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| CN103699884A (en) * | 2013-12-18 | 2014-04-02 | 格科微电子（上海）有限公司 | Optical fingerprint collecting method, optical fingerprint collecting device and portable type electronic device |
| CN104898314A (en) * | 2014-03-07 | 2015-09-09 | 敦泰科技有限公司 | Display device, driving circuit and driving method thereof, and electronic apparatus |
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| WO2018103196A1 (en) | 2018-06-14 |
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