CN106250834A - Fingerprint recognition display floater, its manufacture method, its driving method and display device - Google Patents
Fingerprint recognition display floater, its manufacture method, its driving method and display device Download PDFInfo
- Publication number
- CN106250834A CN106250834A CN201610591238.5A CN201610591238A CN106250834A CN 106250834 A CN106250834 A CN 106250834A CN 201610591238 A CN201610591238 A CN 201610591238A CN 106250834 A CN106250834 A CN 106250834A
- Authority
- CN
- China
- Prior art keywords
- pressure sensitivity
- fingerprint recognition
- display floater
- sensitivity unit
- identification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Image Input (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a kind of fingerprint recognition display floater, its manufacture method, its driving method and display device, multiple ultrasonic detection unit, a plurality of identification scan line, and a plurality of identification output lead are set inside display device；Wherein, each ultrasonic detection unit includes: the pressure sensitivity unit of the ultrasound wave change brought during for producing ultrasound wave and sensing fingerprint pressing, and ultrasound wave change is converted to the control switching transistor of unlike signal output for controlling pressure sensitivity unit.User's finger near the surface of display device time, owing to finger skin surface has rough ridge and paddy, the ultrasound wave that pressure sensitivity unit sends is different with the intensity that paddy position is reflected back pressure sensitivity unit by the ridge of finger, cause the current signal difference of pressure sensitivity cell translation thus realize the detection of fingerprint, fingerprint is detected by pressure sensitivity unit based on piezoelectric effect, it is not likely to produce interference with display device internal part, easily realizes high-quality fingerprint detection.
Description
Technical field
The present invention relates to liquid crystal module field, particularly relate to a kind of fingerprint recognition display floater, its manufacture method, its driving
Method and display device.
Background technology
Along with developing rapidly of Display Technique, there is the display floater of fingerprint identification function the most gradually throughout the life of people
In work.At present, fingerprint recognition display floater is usually the function using capacitance type structure to realize identifying fingerprint, the most embedded finger
Stricture of vagina identification display floater is to be arranged on inside display floater by capacitance type fingerprint identification component, and it is conducive to display floater frivolous
Change, but the parts that capacitance type fingerprint identification component is easily and within display floater produce parasitic capacitance, make fingerprint recognition detection letter
Number and display signal between interfere, thus affect the quality of fingerprint recognition.
Summary of the invention
In view of this, a kind of fingerprint recognition display floater, its manufacture method, its driving method are embodiments provided
And display device, in order to realize efficient fingerprint detection function inside display floater based on piezoelectric effect.
Therefore, embodiments provide a kind of fingerprint recognition display floater, including: it is arranged within display floater
The multiple ultrasonic detection unit being arranged in array, a plurality of identification scan line, and a plurality of identification output lead；Wherein,
Each ultrasonic detection unit includes: the ultrasound wave change brought during for producing ultrasound wave and sensing fingerprint pressing
Pressure sensitivity unit, and for control described pressure sensitivity unit by ultrasound wave change be converted to unlike signal output control switch crystalline substance
Body pipe；
Each described identification scan line and ultrasonic detection unit one_to_one corresponding described in each row, each described identification output lead is with each
Arrange described ultrasonic detection unit one_to_one corresponding；Or, each described identification scan line is with the described ultrasonic detection unit of each row one by one
Correspondence, each described identification output lead and ultrasonic detection unit one_to_one corresponding described in each row；
Described identification scan line is for corresponding described control switching transistor load identification scanning signal；Described identification
Output lead is for described pressure sensitivity unit loading high-frequency signal or reading described pressure by corresponding described control switching transistor
The output current signal of sense unit.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, each institute
State that to control grid and the corresponding described identification scan line of switching transistor connected, one end phase of source electrode and described pressure sensitivity unit
Even, drain and be connected with corresponding described identification output lead；
The other end of each described pressure sensitivity unit is connected with the public electrode in described display floater.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, described
Identify that scan line is consistent with the grid line bearing of trend in described display floater；In display floater described in described identification output lead multiplexing
Data wire.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, described
Pressure sensitivity unit includes bottom electrode, piezoelectric layer and the upper electrode that stacking is arranged；
Described upper electrode is connected with the source electrode of described control switching transistor, and described bottom electrode is with described public electrode even
Connect；Or, described bottom electrode is connected with the source electrode of described control switching transistor, and described upper electrode is connected with described public electrode.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, in institute
State pressure sensitivity unit to deviate from the side of described display floater display surface and be provided with ultrasonic reflections portion, the folding in described ultrasonic reflections portion
Rate of penetrating is less than the described ultrasonic reflections portion refractive index towards the adjacent film layer of described pressure sensitivity unit side.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, described
The adjacent refractive index of film layer and the ratio of the refractive index in described ultrasonic reflections portion are more than 1 and less than 2.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, described
Ultrasonic reflections portion is air chamber.
In a kind of possible implementation, in the above-mentioned fingerprint recognition display floater that the embodiment of the present invention provides, described
Air chamber is arranged at the grid line place film layer of described display floater.
On the other hand, the embodiment of the present invention additionally provides the above-mentioned fingerprint recognition display surface that a kind of embodiment of the present invention provides
The manufacture method of plate, including:
Underlay substrate is formed floating electrode and the figure of grid at least covering air chamber region；
The figure of described floating electrode and grid is formed gate insulation layer；
Described gate insulation layer is carried out dry carving technology, described gate insulation layer is formed at least two via；Described via
Lay respectively at two marginal positions above described air chamber；
By the described via formed in described gate insulation layer, described floating electrode is carried out wet-etching technique, remove described sky
The figure of the described floating electrode of air cavity region；
Pressure sensitivity unit is formed on described gate insulation layer above described air chamber.
On the other hand, the embodiment of the present invention additionally provides the above-mentioned fingerprint recognition display surface that a kind of embodiment of the present invention provides
The driving method of plate, including:
In the fingerprint recognition time period, each described identification scan line loads scanning signal, and each described output line one by one
Load a high-frequency signal that can make pressure sensitivity unit outgoing ultrasound wave simultaneously；Afterwards, each described identification scan line loads the most one by one
Scanning signal, and each described output line is by the control switching transistor described pressure sensitivity of reading being connected with described pressure sensitivity unit
The output current signal of unit.
On the other hand, the embodiment of the present invention additionally provides a kind of display device, including the embodiment of the present invention provide above-mentioned
Fingerprint recognition display floater.
The beneficial effect of the embodiment of the present invention includes:
A kind of fingerprint recognition display floater, its manufacture method, its driving method and the display dress that the embodiment of the present invention provides
Put, multiple ultrasonic detection unit, a plurality of identification scan line, and a plurality of identification output lead are set inside display device；Its
In, each ultrasonic detection unit includes: the pressure of the ultrasound wave change brought during for producing ultrasound wave and sensing fingerprint pressing
Sense unit, and for controlling pressure sensitivity unit, ultrasound wave change is converted to the control switching transistor of unlike signal output.?
User's finger is when the surface of display device, and owing to finger skin surface has rough ridge and paddy, pressure sensitivity unit is sent out
The ultrasound wave gone out is different with the intensity that paddy position is reflected back pressure sensitivity unit by the ridge of finger, causes the electric current of pressure sensitivity cell translation to believe
Number difference thus realize the detection of fingerprint, fingerprint is detected by pressure sensitivity unit based on piezoelectric effect, with display device inside portion
Part is not likely to produce interference, easily realizes high-quality fingerprint detection.
Accompanying drawing explanation
The structural representation of the fingerprint recognition display device that Fig. 1 provides for the embodiment of the present invention；
The principle schematic of the pressure sensitivity unit that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the pressure sensitivity unit that Fig. 3 provides for the embodiment of the present invention；
After in the fingerprint recognition display device that Fig. 4 a to Fig. 4 d respectively embodiment of the present invention provides, each step completes
Plan structure schematic diagram；
After in the fingerprint recognition display device that Fig. 5 a to Fig. 5 d respectively embodiment of the present invention provides, each step completes
Schematic cross-section at aa in corresponding diagram 4a to Fig. 4 d.
Detailed description of the invention
Below in conjunction with the accompanying drawings, to the embodiment of the present invention provide fingerprint recognition display floater, its manufacture method, its driving side
The detailed description of the invention of method and display device is described in detail.
Embodiments provide a kind of fingerprint recognition display device, as it is shown in figure 1, include: be arranged on display device
The internal multiple ultrasonic detection unit 100 being arranged in array, a plurality of identification scan line Finger 1 to n, and a plurality of knowledge
Other output lead Read 1 and 2；Wherein,
Each ultrasonic detection unit 100 includes: the ultrasound wave brought during for producing ultrasound wave and sensing fingerprint pressing
The pressure sensitivity unit 101 of change, and for controlling pressure sensitivity unit 101, ultrasound wave change is converted to the control of unlike signal output
Switching transistor 102；
Each identification scan line Finger 1 to n and each row ultrasonic detection unit 100 one_to_one corresponding, respectively identify output lead
Read 1 and 2 and each row ultrasonic detection unit 100 one_to_one corresponding, respectively identify that scan line Finger 1 to n is along level side
To extension, each output lead Read 1 and 2 of identification extends along vertical direction；Or, each identification scan line Finger 1 to n and each row
Ultrasonic detection unit 100 one_to_one corresponding, each identifies output lead Read 1 and 2 and each row ultrasonic detection unit 100 1 a pair
Should, respectively identifying that scan line Finger 1 to n extends along vertical direction, each identification output lead Read 1 and 2 is along level side
To extension；
Identify that scan line Finger 1 to n is for corresponding control switching transistor 102 load identification scanning signal；Know
Other output lead Read 1 and 2 is for loading high-frequency signal or reading by corresponding control switching transistor 102 to pressure sensitivity unit 101
The output current signal of pressure sense unit 101.
The above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, at user's finger near the surface of display device
Time, owing to finger skin surface has rough ridge B and paddy A, as in figure 2 it is shown, launch identical energy from pressure sensitivity unit 101
Ultrasound wave arrive the display surface of display floater after, the ripple being reflected back pressure sensitivity unit 101 through the ridge B of finger or paddy location A is strong
It is referred to acoustic impedance relation: pressure reflection ratio R=echo acoustic pressure/incidence wave acoustic pressure；Specifically, at finger paddy location A
Pressure reflection ratio R paddy=(Z1-Z2)/(Z1+Z2)=1-2/ (1+Z1/Z2)=0.9975；Sound pressure reflection at finger ridge B location
Rate R ridge=(Z3-Z2)/(Z3+Z2)=1-2/ (1+Z3/Z2)=0.5238；Wherein, Z1 is the acoustic impedance values of air, generally
0.00004；Z2 is the acoustic impedance values of display floater, generally 0.32；Z3 is the acoustic impedance values of human body, generally 0.1.Can see
Going out, the ultrasound wave that pressure sensitivity unit 101 sends is different with the intensity that paddy location A is reflected back pressure sensitivity unit 101 by the ridge B of finger, makes
Become the current signal difference changed according to direct piezoelectric effect of pressure sensitivity unit 101 thus realize the detection of fingerprint, pressure sensitivity unit 101 base
In piezoelectric effect, fingerprint is detected, be not likely to produce interference with display device internal part, easily realize high-quality fingerprint
Detection.
In the specific implementation, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, for the ease of passing through
Identify that the conducting state controlling switching transistor 102 is controlled by scan line Finger 1 to n, in order to by conducting state
Identification output lead Read 1 and 2 is electrically connected by switching transistor 102 with pressure sensitivity unit 101, it is simple to identify output lead Read 1 and 2
Load high-frequency signal to pressure sensitivity unit 101, so that pressure sensitivity unit 101 produces ultrasound wave, or be easy to identify output lead Read 1 and 2
Read the output current signal of pressure sensitivity unit 101.Each grid of switching transistor 102 that controls is it is generally required to sweep with corresponding identification
Retouching line Finger 1 to n to be connected, source electrode is connected with one end of pressure sensitivity unit 101, drains and corresponding identification output lead Read 1
It is connected with 2, so, when identifying scan line Finger 1 to n load identification scanning signal, controls switching transistor 102 and be in
Conducting state, identifies that output lead Read 1 and 2 is connected with one end of pressure sensitivity unit 101, by identifying that output lead Read 1 and 2 can
Pressure sensitivity unit 101 one end is loaded high-frequency signal or reads the current signal of pressure sensitivity unit 101 one end output；Further, for
Guarantee each pressure sensitivity unit 101 can carry out piezoelectricity transition effects, the other end of each pressure sensitivity unit 101 can with in display device
Public electrode be connected, to ensure that the other end of pressure sensitivity unit 101 is in fixed potential.
In the specific implementation, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, as it is shown in figure 1, know
Other scan line Finger 1 to n can be consistent with grid line Gate 1 to the n bearing of trend in display device, now, identifies output
Line Read 1 and 2 so can reduce wiring number in a display device relatively with the data wire SD in multiplexing display device
Amount and complexity.
In the specific implementation, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, in order to ensure pressure sensitivity
The ultrasound wave that unit 101 produces is directed predominantly perpendicular to the display surface of display device and launches, as it is shown on figure 3, pressure sensitivity unit 101 typically wraps
Include bottom electrode 111, piezoelectric layer 112 and upper electrode 113 that stacking is arranged；Wherein, upper electrode 111 can be with control switching transistor
The source electrode of 102 connects, in order to feed piezoelectric layer 112 high-frequency signal, accordingly bottom electrode 113 and public electrode from upper electrode 111
Connect, in order to feed piezoelectric layer 112 fixed potential from bottom electrode 113 so that piezoelectric layer 112 both end voltage shake under according to inverse
Piezoelectric effect produces ultrasound wave；Otherwise or, bottom electrode 113 can be connected with the source electrode controlling switching transistor 102, in order to from
Bottom electrode 113 feeds piezoelectric layer 112 high-frequency signal, goes up electrode 111 accordingly and is connected with public electrode, in order to from upper electrode 111
Feed piezoelectric layer 112 fixed potential so that piezoelectric layer 112 produces ultrasound wave under both end voltage is shaken.
Usually, the material of piezoelectric layer 112 can select the piezoelectrics such as AlN, ZnO, ZnS.
In the specific implementation, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, due to pressure sensitivity unit
101 ultrasound wave produced are directed predominantly perpendicular to the display surface of display device and launch, and electrode 111 and bottom electrode 112 on pointing to
Both direction all can be launched ultrasound wave, the so ultrasound wave towards bottom electrode 112 and will not be utilized in detection fingerprint, causes wave
Take.In order to reduce ultrasound wave loss before not being irradiated to fingerprint as far as possible, it is ensured that the ultrasound wave that pressure sensitivity unit 101 produces is tried one's best court
Upwards the i.e. display surface of electrode 111 is launched, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, it is preferred that such as
Shown in Fig. 3, the side (i.e. bottom electrode 113 side) of display floater display surface can be deviated from pressure sensitivity unit 101 and ultrasound wave is set
Reflecting part 114, refractive index n1 in this ultrasonic reflections portion 114 is less than ultrasonic reflections portion 114 towards pressure sensitivity unit 101 side
Refractive index n2 of adjacent film layer 115.So, when ultrasonic propagation to ultrasonic reflections portion 114 and adjacent film layer 115 interface,
Major part can be reflected back toward adjacent film layer 115, launch towards display floater display surface, such that it is able to reduce the loss of ultrasound wave.
It is preferred that in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, in order to ensure the big of ultrasound wave
Part is reflected back toward adjacent film layer 115, it is generally required to refractive index n2 of adjacent film layer 115 and the refraction in ultrasonic reflections portion 114
The ratio of rate n1 is more than 1 and less than 2.
Further, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, for the ease of implementing, such as figure
Shown in 3, air chamber can be used as ultrasonic reflections portion 114, refractive index n2 of air chamber is less general about 1.5, has
It is beneficial to realize the reflection of ultrasound wave.
Further, in the above-mentioned fingerprint recognition display device that the embodiment of the present invention provides, for the ease of implementing, such as figure
Shown in 3, air chamber can be arranged at the grid line place film layer of display floater, now, adjacent film layer 115 is for being produced on grid line institute
At the gate insulation layer of film layer, its refractive index is about about 1.7.
Based on same inventive concept, the embodiment of the present invention additionally provides the manufacture method of above-mentioned fingerprint recognition display floater,
The step wherein making the air chamber as ultrasonic reflections portion 114 and pressure sensitivity unit 101 is the most rapid:
1, formed on underlay substrate at least cover the air chamber region as ultrasonic reflections portion 114 floating electricity
Pole 116 and the figure of grid, form the gate insulation layer as adjacent film layer 115 on the figure of floating electrode 116 and grid, as
Shown in Fig. 4 a and Fig. 5 a；
2, gate insulation layer is carried out dry carving technology, gate insulation layer is formed at least two via；This via lays respectively at
At two marginal positions above air chamber, as shown in Fig. 4 b and Fig. 5 b；
3, the via by being formed in gate insulation layer carries out wet-etching technique to floating electrode 116, removes air chamber location
The figure of the floating electrode 116 in territory, to form the air chamber as ultrasonic reflections portion 114, as shown in Fig. 4 c and Fig. 5 c；
4, pressure sensitivity unit 101 is formed on the gate insulation layer above air chamber, as shown in Fig. 4 d and Fig. 5 d.
Based on same inventive concept, the embodiment of the present invention additionally provides the driving method of above-mentioned fingerprint recognition display floater,
In the fingerprint recognition time period, each identification scan line loads scanning signal one by one, and each output line loads simultaneously
One high-frequency signal that can make pressure sensitivity unit outgoing ultrasound wave；Afterwards, each identification scan line loads the most one by one and scans signal, and respectively
Output line reads the output current signal of pressure sensitivity unit by the control switching transistor being connected with pressure sensitivity unit.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, carries including the embodiment of the present invention
The above-mentioned fingerprint recognition display floater of confession, this display device can be: mobile phone, panel computer, television set, display, notebook
Any product with display function or the parts such as computer, DPF, navigator.The enforcement of this display device may refer to
State the embodiment of fingerprint recognition display floater, repeat no more in place of repetition.
Above-mentioned fingerprint recognition display floater, its manufacture method, its driving method and the display dress that the embodiment of the present invention provides
Put, multiple ultrasonic detection unit, a plurality of identification scan line, and a plurality of identification output lead are set inside display device；Its
In, each ultrasonic detection unit includes: the pressure of the ultrasound wave change brought during for producing ultrasound wave and sensing fingerprint pressing
Sense unit, and for controlling pressure sensitivity unit, ultrasound wave change is converted to the control switching transistor of unlike signal output.?
User's finger is when the surface of display device, and owing to finger skin surface has rough ridge and paddy, pressure sensitivity unit is sent out
The ultrasound wave gone out is different with the intensity that paddy position is reflected back pressure sensitivity unit by the ridge of finger, causes the electric current of pressure sensitivity cell translation to believe
Number difference thus realize the detection of fingerprint, fingerprint is detected by pressure sensitivity unit based on piezoelectric effect, with display device inside portion
Part is not likely to produce interference, easily realizes high-quality fingerprint detection.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a fingerprint recognition display floater, it is characterised in that including: be arranged within display floater be arranged in array many
Individual ultrasonic detection unit, a plurality of identification scan line, and a plurality of identification output lead；Wherein,
Each ultrasonic detection unit includes: the pressure of the ultrasound wave change brought during for producing ultrasound wave and sensing fingerprint pressing
Sense unit, and for controlling described pressure sensitivity unit, ultrasound wave change is converted to the control switch crystal of unlike signal output
Pipe；
Each described identification scan line and ultrasonic detection unit one_to_one corresponding described in each row, each described identification output lead and each row institute
State ultrasonic detection unit one_to_one corresponding；Or, each described identification scan line and each row described ultrasonic detection unit one_to_one corresponding,
Each described identification output lead and ultrasonic detection unit one_to_one corresponding described in each row；
Described identification scan line is for corresponding described control switching transistor load identification scanning signal；Described identification exports
Line is for described pressure sensitivity unit loading high-frequency signal or reading described pressure sensitivity list by corresponding described control switching transistor
The output current signal of unit.
2. fingerprint recognition display floater as claimed in claim 1, it is characterised in that the grid of each described control switching transistor
Being connected with corresponding described identification scan line, source electrode is connected with one end of described pressure sensitivity unit, drains and corresponding described identification
Output lead is connected；
The other end of each described pressure sensitivity unit is connected with the public electrode in described display floater.
3. fingerprint recognition display floater as claimed in claim 2, it is characterised in that described identification scan line and described display surface
Grid line bearing of trend in plate is consistent；Data wire in display floater described in described identification output lead multiplexing.
4. fingerprint recognition display floater as claimed in claim 2 or claim 3, it is characterised in that described pressure sensitivity unit includes that stacking sets
Bottom electrode, piezoelectric layer and the upper electrode put；
Described upper electrode is connected with the source electrode of described control switching transistor, and described bottom electrode is connected with described public electrode；Or,
Described bottom electrode is connected with the source electrode of described control switching transistor, and described upper electrode is connected with described public electrode.
5. fingerprint recognition display floater as claimed in claim 4, it is characterised in that deviate from described display at described pressure sensitivity unit
The side in Display panel face is provided with ultrasonic reflections portion, and the refractive index in described ultrasonic reflections portion is less than described ultrasonic reflections
Portion is towards the refractive index of the adjacent film layer of described pressure sensitivity unit side.
6. fingerprint recognition display floater as claimed in claim 5, it is characterised in that the refractive index of described adjacent film layer is with described
The ratio of the refractive index in ultrasonic reflections portion is more than 1 and less than 2.
7. fingerprint recognition display floater as claimed in claim 6, it is characterised in that described ultrasonic reflections portion is air chamber.
8. fingerprint recognition display floater as claimed in claim 7, it is characterised in that described air chamber is arranged at described display surface
The grid line place film layer of plate.
9. the manufacture method of a fingerprint recognition display floater as claimed in claim 8, it is characterised in that including:
Underlay substrate is formed floating electrode and the figure of grid at least covering air chamber region；
The figure of described floating electrode and grid is formed gate insulation layer；
Described gate insulation layer is carried out dry carving technology, described gate insulation layer is formed at least two via；Described via is respectively
It is positioned at two marginal positions above described air chamber；
By the described via formed in described gate insulation layer, described floating electrode is carried out wet-etching technique, remove described air chamber
The figure of the described floating electrode of region；
Pressure sensitivity unit is formed on described gate insulation layer above described air chamber.
10. the driving method of the fingerprint recognition display floater as described in any one of claim 1-8, it is characterised in that bag
Include:
In the fingerprint recognition time period, each described identification scan line loads scanning signal one by one, and each described output line is simultaneously
Load a high-frequency signal that can make pressure sensitivity unit outgoing ultrasound wave；Afterwards, each described identification scan line loads scanning the most one by one
Signal, and each described output line is by the control switching transistor described pressure sensitivity unit of reading being connected with described pressure sensitivity unit
Output current signal.
11. 1 kinds of display devices, it is characterised in that include the fingerprint recognition display floater as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591238.5A CN106250834B (en) | 2016-07-25 | 2016-07-25 | Fingerprint recognition display panel, its production method, its driving method and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591238.5A CN106250834B (en) | 2016-07-25 | 2016-07-25 | Fingerprint recognition display panel, its production method, its driving method and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106250834A true CN106250834A (en) | 2016-12-21 |
| CN106250834B CN106250834B (en) | 2019-05-10 |
Family
ID=57604685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610591238.5A Active CN106250834B (en) | 2016-07-25 | 2016-07-25 | Fingerprint recognition display panel, its production method, its driving method and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106250834B (en) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530968A (en) * | 2016-12-27 | 2017-03-22 | 京东方科技集团股份有限公司 | Display device and method for controlling same |
| CN106711320A (en) * | 2017-01-09 | 2017-05-24 | 清华大学 | Ultrasonic fingerprint collecting device and preparation method thereof |
| CN106919914A (en) * | 2017-02-22 | 2017-07-04 | 北京小米移动软件有限公司 | Display module and electronic equipment |
| CN106951130A (en) * | 2017-03-28 | 2017-07-14 | 京东方科技集团股份有限公司 | A kind of array base palte, display panel, display device and array base palte preparation method |
| CN107194345A (en) * | 2017-05-18 | 2017-09-22 | 上海思立微电子科技有限公司 | Electronic equipment, ultrasonic fingerprint identifying device and its manufacture method |
| CN107292226A (en) * | 2017-04-24 | 2017-10-24 | 麦克思商务咨询(深圳)有限公司 | Fingerprint identification device and electronic installation |
| CN107798300A (en) * | 2017-10-10 | 2018-03-13 | 成都安瑞芯科技有限公司 | Ultrasonic fingerprint identification module, device and electronic equipment |
| CN107977602A (en) * | 2017-10-10 | 2018-05-01 | 成都安瑞芯科技有限公司 | Ultrasonic fingerprint identification module, module, device and electronic equipment |
| CN108171183A (en) * | 2018-01-02 | 2018-06-15 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device and fingerprint identification method |
| CN108446685A (en) * | 2018-05-24 | 2018-08-24 | 京东方科技集团股份有限公司 | Ultrasonic fingerprint identifies module and preparation method thereof and display device |
| WO2018223735A1 (en) * | 2017-06-07 | 2018-12-13 | 京东方科技集团股份有限公司 | Fingerprint identification substrate, fingerprint identification method, and display device |
| CN109241891A (en) * | 2018-08-27 | 2019-01-18 | 惠州Tcl移动通信有限公司 | Unlocked by fingerprint device, unlocking method and mobile terminal under a kind of screen |
| CN109376616A (en) * | 2018-09-29 | 2019-02-22 | 京东方科技集团股份有限公司 | Fingerprint recognition device, its fingerprint identification method and display device |
| CN110010046A (en) * | 2019-04-22 | 2019-07-12 | 京东方科技集团股份有限公司 | Display panel, its detection method and display device |
| CN110046556A (en) * | 2019-03-27 | 2019-07-23 | 武汉华星光电技术有限公司 | A kind of display panel and its terminal part |
| CN110201872A (en) * | 2019-06-17 | 2019-09-06 | 京东方科技集团股份有限公司 | A kind of detection panel, display device, detection panel driving method and production method |
| CN110245636A (en) * | 2019-06-20 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition mould group, display panel, display device and fingerprint identification method |
| CN110298289A (en) * | 2019-06-24 | 2019-10-01 | Oppo广东移动通信有限公司 | Material identification method, apparatus, storage medium and electronic equipment |
| WO2019228198A1 (en) * | 2018-05-30 | 2019-12-05 | 京东方科技集团股份有限公司 | Ultrasonic sensor and manufacturing method therefor, and display device |
| WO2020156249A1 (en) * | 2019-01-28 | 2020-08-06 | 京东方科技集团股份有限公司 | Fingerprint recognition module and driving method therefor, and electronic device |
| WO2020155647A1 (en) * | 2019-01-28 | 2020-08-06 | 京东方科技集团股份有限公司 | Fingerprint recognition module and manufacturing method thereof, driving method, and display device |
| US20200353507A1 (en) * | 2018-05-10 | 2020-11-12 | Boe Technology Group Co., Ltd. | Ultrasonic sensor and manufacturing method therefor, and ultrasonic sensor array and display device |
| CN112216784A (en) * | 2019-07-12 | 2021-01-12 | 茂丞科技(深圳)有限公司 | Wafer-level ultrasonic sensing device and manufacturing method thereof |
| CN112507761A (en) * | 2019-09-16 | 2021-03-16 | 京东方科技集团股份有限公司 | Fingerprint identification module, driving method thereof and display device |
| CN113780184A (en) * | 2021-09-13 | 2021-12-10 | 上海天马微电子有限公司 | Ultrasonic fingerprint identification module and display device |
| CN115834763A (en) * | 2022-11-16 | 2023-03-21 | 维沃移动通信有限公司 | Screen control method and device and ultrasonic fingerprint detection module |
| US11756330B2 (en) | 2018-09-29 | 2023-09-12 | Boe Technology Group Co., Ltd. | Biometric sensor, display apparatus, and method for detecting biometric information |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150036065A1 (en) * | 2013-08-05 | 2015-02-05 | Apple Inc. | Fingerprint Sensor in an Electronic Device |
| US20150169136A1 (en) * | 2013-12-12 | 2015-06-18 | Qualcomm Incorporated | Micromechanical ultrasonic transducers and display |
| CN104850292A (en) * | 2015-06-01 | 2015-08-19 | 京东方科技集团股份有限公司 | Embedded touch screen, driving method of embedded touch screen and display device |
| CN105046243A (en) * | 2015-08-25 | 2015-11-11 | 业成光电（深圳）有限公司 | Display device |
| CN105393261A (en) * | 2013-06-03 | 2016-03-09 | 高通股份有限公司 | Display with peripherally configured ultrasonic biometric sensor |
| CN105683883A (en) * | 2013-11-04 | 2016-06-15 | 高通股份有限公司 | Piezoelectric force sensing array |
-
2016
- 2016-07-25 CN CN201610591238.5A patent/CN106250834B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393261A (en) * | 2013-06-03 | 2016-03-09 | 高通股份有限公司 | Display with peripherally configured ultrasonic biometric sensor |
| US20150036065A1 (en) * | 2013-08-05 | 2015-02-05 | Apple Inc. | Fingerprint Sensor in an Electronic Device |
| CN105683883A (en) * | 2013-11-04 | 2016-06-15 | 高通股份有限公司 | Piezoelectric force sensing array |
| US20150169136A1 (en) * | 2013-12-12 | 2015-06-18 | Qualcomm Incorporated | Micromechanical ultrasonic transducers and display |
| CN104850292A (en) * | 2015-06-01 | 2015-08-19 | 京东方科技集团股份有限公司 | Embedded touch screen, driving method of embedded touch screen and display device |
| CN105046243A (en) * | 2015-08-25 | 2015-11-11 | 业成光电（深圳）有限公司 | Display device |
Cited By (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020504341A (en) * | 2016-12-27 | 2020-02-06 | 京東方科技集團股▲ふん▼有限公司Ｂｏｅ Ｔｅｃｈｎｏｌｏｇｙ Ｇｒｏｕｐ Ｃｏ．，Ｌｔｄ． | Display device and display device control method |
| JP7122827B2 (en) | 2016-12-27 | 2022-08-22 | 京東方科技集團股▲ふん▼有限公司 | DISPLAY DEVICE AND CONTROL METHOD OF DISPLAY DEVICE |
| CN106530968A (en) * | 2016-12-27 | 2017-03-22 | 京东方科技集团股份有限公司 | Display device and method for controlling same |
| CN106530968B (en) * | 2016-12-27 | 2019-09-20 | 京东方科技集团股份有限公司 | The control method of display device and display device |
| WO2018120692A1 (en) * | 2016-12-27 | 2018-07-05 | 京东方科技集团股份有限公司 | Display device and method for controlling display device |
| CN106711320A (en) * | 2017-01-09 | 2017-05-24 | 清华大学 | Ultrasonic fingerprint collecting device and preparation method thereof |
| CN106919914A (en) * | 2017-02-22 | 2017-07-04 | 北京小米移动软件有限公司 | Display module and electronic equipment |
| CN106951130A (en) * | 2017-03-28 | 2017-07-14 | 京东方科技集团股份有限公司 | A kind of array base palte, display panel, display device and array base palte preparation method |
| US10691911B2 (en) | 2017-03-28 | 2020-06-23 | Boe Technology Group Co., Ltd. | Array substrate, display panel, display device and method for manufacturing array substrate |
| CN106951130B (en) * | 2017-03-28 | 2019-09-03 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel, display equipment and array substrate preparation method |
| CN107292226A (en) * | 2017-04-24 | 2017-10-24 | 麦克思商务咨询(深圳)有限公司 | Fingerprint identification device and electronic installation |
| CN107194345B (en) * | 2017-05-18 | 2020-01-24 | 上海思立微电子科技有限公司 | Electronic device, ultrasonic fingerprint identification device and manufacturing method thereof |
| CN107194345A (en) * | 2017-05-18 | 2017-09-22 | 上海思立微电子科技有限公司 | Electronic equipment, ultrasonic fingerprint identifying device and its manufacture method |
| WO2018223735A1 (en) * | 2017-06-07 | 2018-12-13 | 京东方科技集团股份有限公司 | Fingerprint identification substrate, fingerprint identification method, and display device |
| US11238257B2 (en) | 2017-06-07 | 2022-02-01 | Boe Technology Group Co., Ltd. | Fingerprint identification substrate, fingerprint identification method and display device |
| CN107798300A (en) * | 2017-10-10 | 2018-03-13 | 成都安瑞芯科技有限公司 | Ultrasonic fingerprint identification module, device and electronic equipment |
| CN107977602A (en) * | 2017-10-10 | 2018-05-01 | 成都安瑞芯科技有限公司 | Ultrasonic fingerprint identification module, module, device and electronic equipment |
| CN108171183A (en) * | 2018-01-02 | 2018-06-15 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device and fingerprint identification method |
| US10643049B2 (en) | 2018-01-02 | 2020-05-05 | Boe Technology Group Co., Ltd. | Display substrate, manufacturing method thereof, display device and fingerprint identification method |
| US11602771B2 (en) * | 2018-05-10 | 2023-03-14 | Boe Technology Group Co., Ltd. | Ultrasonic sensor and manufacturing method therefor, and ultrasonic sensor array and display device |
| US20200353507A1 (en) * | 2018-05-10 | 2020-11-12 | Boe Technology Group Co., Ltd. | Ultrasonic sensor and manufacturing method therefor, and ultrasonic sensor array and display device |
| CN108446685A (en) * | 2018-05-24 | 2018-08-24 | 京东方科技集团股份有限公司 | Ultrasonic fingerprint identifies module and preparation method thereof and display device |
| US11417826B2 (en) | 2018-05-30 | 2022-08-16 | Boe Technology Group Co., Ltd. | Ultrasonic sensor, manufacturing method thereof and display device |
| WO2019228198A1 (en) * | 2018-05-30 | 2019-12-05 | 京东方科技集团股份有限公司 | Ultrasonic sensor and manufacturing method therefor, and display device |
| CN109241891A (en) * | 2018-08-27 | 2019-01-18 | 惠州Tcl移动通信有限公司 | Unlocked by fingerprint device, unlocking method and mobile terminal under a kind of screen |
| US11361578B2 (en) | 2018-09-29 | 2022-06-14 | Boe Technology Group Co., Ltd. | Method for detecting biometric information, biometric sensor, and display apparatus |
| CN109376616A (en) * | 2018-09-29 | 2019-02-22 | 京东方科技集团股份有限公司 | Fingerprint recognition device, its fingerprint identification method and display device |
| US11756330B2 (en) | 2018-09-29 | 2023-09-12 | Boe Technology Group Co., Ltd. | Biometric sensor, display apparatus, and method for detecting biometric information |
| CN109376616B (en) * | 2018-09-29 | 2021-08-17 | 京东方科技集团股份有限公司 | Fingerprint identification device, fingerprint identification method thereof and display device |
| EP3920080A4 (en) * | 2019-01-28 | 2022-11-16 | BOE Technology Group Co., Ltd. | Fingerprint identification module and driving method therefor, fabrication method and display device |
| EP3920085A4 (en) * | 2019-01-28 | 2022-11-16 | Boe Technology Group Co., Ltd. | Fingerprint identification module and manufacturing method therefor, and electronic apparatus |
| CN112189201A (en) * | 2019-01-28 | 2021-01-05 | 京东方科技集团股份有限公司 | Fingerprint identification module, manufacturing method thereof, driving method thereof and display device |
| WO2020156249A1 (en) * | 2019-01-28 | 2020-08-06 | 京东方科技集团股份有限公司 | Fingerprint recognition module and driving method therefor, and electronic device |
| CN111758103B (en) * | 2019-01-28 | 2024-01-30 | 京东方科技集团股份有限公司 | Fingerprint identification module, driving method thereof and electronic device |
| US11442583B2 (en) | 2019-01-28 | 2022-09-13 | Beijing Boe Technology Development Co., Ltd. | Fingerprint identification module, manufacturing method thereof and electronic device |
| CN111758103A (en) * | 2019-01-28 | 2020-10-09 | 京东方科技集团股份有限公司 | Fingerprint identification module, driving method thereof and electronic device |
| US11397495B2 (en) | 2019-01-28 | 2022-07-26 | Boe Technology Group Co., Ltd. | Fingerprint identification module and driving method thereof and electronic device |
| WO2020155647A1 (en) * | 2019-01-28 | 2020-08-06 | 京东方科技集团股份有限公司 | Fingerprint recognition module and manufacturing method thereof, driving method, and display device |
| CN110046556A (en) * | 2019-03-27 | 2019-07-23 | 武汉华星光电技术有限公司 | A kind of display panel and its terminal part |
| CN110010046B (en) * | 2019-04-22 | 2022-07-19 | 京东方科技集团股份有限公司 | Display panel, detection method thereof and display device |
| CN110010046A (en) * | 2019-04-22 | 2019-07-12 | 京东方科技集团股份有限公司 | Display panel, its detection method and display device |
| CN110201872A (en) * | 2019-06-17 | 2019-09-06 | 京东方科技集团股份有限公司 | A kind of detection panel, display device, detection panel driving method and production method |
| US11402949B2 (en) | 2019-06-17 | 2022-08-02 | Boe Technology Group Co., Ltd. | Detection panel, display apparatus, driving method and manufacturing method for the detection panel |
| CN110201872B (en) * | 2019-06-17 | 2021-08-27 | 京东方科技集团股份有限公司 | Detection panel, display device, detection panel driving method and manufacturing method |
| WO2020253590A1 (en) * | 2019-06-17 | 2020-12-24 | 京东方科技集团股份有限公司 | Detection panel, display device, detection panel driving method and detection panel manufacturing method |
| CN110245636A (en) * | 2019-06-20 | 2019-09-17 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition mould group, display panel, display device and fingerprint identification method |
| CN110245636B (en) * | 2019-06-20 | 2021-08-10 | 京东方科技集团股份有限公司 | Fingerprint identification module, display panel, display device and fingerprint identification method |
| CN110298289B (en) * | 2019-06-24 | 2021-11-02 | Oppo广东移动通信有限公司 | Material identification method, device, storage medium and electronic equipment |
| CN110298289A (en) * | 2019-06-24 | 2019-10-01 | Oppo广东移动通信有限公司 | Material identification method, apparatus, storage medium and electronic equipment |
| CN112216784A (en) * | 2019-07-12 | 2021-01-12 | 茂丞科技(深圳)有限公司 | Wafer-level ultrasonic sensing device and manufacturing method thereof |
| CN112507761A (en) * | 2019-09-16 | 2021-03-16 | 京东方科技集团股份有限公司 | Fingerprint identification module, driving method thereof and display device |
| CN113780184A (en) * | 2021-09-13 | 2021-12-10 | 上海天马微电子有限公司 | Ultrasonic fingerprint identification module and display device |
| CN115834763A (en) * | 2022-11-16 | 2023-03-21 | 维沃移动通信有限公司 | Screen control method and device and ultrasonic fingerprint detection module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106250834B (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106250834A (en) | Fingerprint recognition display floater, its manufacture method, its driving method and display device | |
| CN109829419A (en) | Fingerprint recognition mould group and its driving method and production method, display device | |
| CN107194384B (en) | Display base plate and its driving method, display device | |
| KR102433315B1 (en) | Ultrasonic transducers embedded organic light emitting diodes panel and display device inculding the same | |
| CN110201872B (en) | Detection panel, display device, detection panel driving method and manufacturing method | |
| CN108446685A (en) | Ultrasonic fingerprint identifies module and preparation method thereof and display device | |
| CN107710224A (en) | Capacitance type fingerprint sensing device further and the method for capturing fingerprint using sensing device further | |
| CN110245636B (en) | Fingerprint identification module, display panel, display device and fingerprint identification method | |
| KR20180066096A (en) | Integrated Piezoelectric Micromechanical Ultrasonic Transducer Pixel and Array | |
| US9687214B2 (en) | Ultrasonic measuring device, program, and method of controlling ultrasonic measuring device | |
| CN105843446A (en) | Detection assembly, touch display apparatus, touch positioning method and pressure detection method | |
| CN205691915U (en) | A kind of display floater and display device | |
| JP2012127945A (en) | Large-area ultrasound contact imaging | |
| CN208126414U (en) | Ultrasonic fingerprint identifies mould group and display device | |
| CN104274205A (en) | Ultrasonic measuring device, ultrasonic image device, and ultrasonic measuring method | |
| US11024796B2 (en) | Method of manufacturing an ultrasonic probe | |
| US11138404B2 (en) | Complex sensing device, display device, and sensing method | |
| US11398105B2 (en) | Ultrasonic recognition module, driving method thereof, and display device | |
| CN110210435A (en) | A kind of display panel, its control method and display device | |
| CN111782090B (en) | Display module, ultrasonic touch detection method and ultrasonic fingerprint identification method | |
| CN110168735A (en) | Display base plate and its driving method and display device | |
| CN106166078A (en) | Ultrasonic sensing device and method for sensing thereof | |
| CN109492472A (en) | Ultrasonic fingerprint identifies mould group and electronic equipment | |
| CN111553325B (en) | Fingerprint identification circuit, driving method and display device | |
| CN109598258B (en) | Ultrasonic detection circuit, image sensor pixel circuit and signal detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |