CN110490122A - The fingerprint sensing region of display element and the alignment schemes of fingerprint sensing mould group - Google Patents
The fingerprint sensing region of display element and the alignment schemes of fingerprint sensing mould group Download PDFInfo
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- CN110490122A CN110490122A CN201910751790.XA CN201910751790A CN110490122A CN 110490122 A CN110490122 A CN 110490122A CN 201910751790 A CN201910751790 A CN 201910751790A CN 110490122 A CN110490122 A CN 110490122A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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Abstract
A kind of alignment schemes in the fingerprint sensing region of display element and fingerprint sensing mould group are suitable for electronic device, include display element, controller and fingerprint sensing mould group with fingerprint sensing region.This alignment schemes includes: controller starts display element and reflexes to fingerprint sensing mould group to be pointed into object from fingerprint sensing region sending illumination beam, and wherein the light signal strength from the closer first area in center is presented less than the light signal strength from the farther away second area in center in the light source pattern of illumination beam；Reflected light of the fingerprint sensing mould group sensing illumination beam after object reflects is to obtain initial data, the summation for the reflected light signal intensity that wherein initial data is sensed by fingerprint sensing mould group；Controller adjustment light source pattern is located at the position of display element；Fingerprint sensing mould group senses reflected light adjusted to be adjusted rear data, wherein after adjustment data for the reflected light signal intensity that fingerprint sensing mould group is sensed after adjusting light source pattern position summation；Position according to data point reuse light source pattern after initial data and adjustment.
Description
Technical field
The invention relates to the alignment schemes of a kind of display element and sensing mould group, and in particular to a kind of electronics
The fingerprint sensing region of display element in device and the alignment schemes of fingerprint sensing mould group.
Background technique
With the continuous evolution and improvement of electronics technology and manufacturing technology, information electronic product is also weeded out the old and bring forth the new always.Electricity
The electronic products such as brain, mobile phone, camera have been the tools of modern's indispensability.In addition, in intelligent running gear now, also
It needs to integrate fingeprint distinguisher, to reinforce the safety in utilization of intelligent running gear and support more intelligent functions.
Currently, to carry out identification of fingerprint on the display or cover board that finger can be pressed on mobile phone by user.However, In
During sensing, during the brightness for the reflected light signal that the sensing picture element around fingerprint sensing mould group is sensed often relatively is lower than
The brightness for the reflected light signal that sensing picture element at centre is sensed, so that the signal strength of surrounding and the signal of centre are strong
Degree has drop, will affect the correctness of fingermark image quality and identification of fingerprint.In current solution, often with rear end
Software carrys out the non-uniform phenomenon of revise signal intensity, but revised fingermark image is still to have side effect, such as can be by noise
Amplify and causes the side effects such as loss of detail.Therefore, the fingerprint that can sense uniform reflected light signal intensity how is designed
Mould group is sensed, is that those skilled in the art are dedicated to research.
Summary of the invention
The present invention provides a kind of fingerprint sensing region of display element and the alignment schemes of fingerprint sensing mould group, to solve
The poor quality problem of the fingermark image sensed.
One embodiment of the invention provides the fingerprint sensing region of display element a kind of and the side of alignment of fingerprint sensing mould group
Method is suitable for electronic device.Electronic device includes display element, controller and fingerprint sensing mould group.Display element has fingerprint
Sensing region, controller is electrically connected at display element and fingerprint sensing mould group, and fingerprint sensing mould group is to be located at display member
The lower section of part.Alignment schemes include: controller starts display element to issue illumination beam from fingerprint sensing region, is pointed into and is located at
The object of fingerprint sensing overlying regions, wherein illumination beam has light source pattern, and the light signal strength distribution of light source pattern is in
Now the light signal strength from the closer first area in center is less than the light signal strength from the farther away second area in center；Fingerprint sense
Reflected light of the mould group sensing illumination beam after object reflects is surveyed, to obtain initial data, wherein initial data is fingerprint sensing
The summation for the reflected light signal intensity that mould group is sensed；The light source pattern of controller adjustment illumination beam is located at display element
Position；Fingerprint sensing mould group senses reflected light of the illumination beam adjusted after object reflects, to be adjusted rear data,
Data are after the light source pattern of adjustment illumination beam after middle adjustment, and the reflected light signal that fingerprint sensing mould group is sensed is strong
The summation of degree；And the position according to the light source pattern of data point reuse illumination beam after initial data and adjustment.
In one embodiment of this invention, the above-mentioned light source according to data point reuse illumination beam after initial data and adjustment
The position of pattern includes: data are after comparing initial data and adjusting to judge sensed reflected light signal intensity value summation
It reduces or increases；If reflected light signal intensity value summation reduces, the light source pattern for adjusting illumination beam is moved up along first direction
It moves until reflected light signal intensity value summation increases；And if reflected light signal intensity value summation increases, and adjusts light source pattern
It is moved along the direction in contrast to first direction until reflected light signal intensity summation increases.
In one embodiment of this invention, above-mentioned foundation initial data and adjustment after data point reuse illumination beam light
The position of source pattern also includes: compare initial data and adjustment after data with judge reflected light signal intensity summation be reduction or
Increase；If reflected light signal intensity value summation reduces, it is upper mobile until reflected light signal in a second direction to adjust light source pattern
Intensity value summation increases；And if reflected light signal intensity value summation increases, and adjusts light source pattern along in contrast to second direction
Direction it is mobile until reflected light signal intensity summation increases.
Based on above-mentioned, in the fingerprint sensing region of display element of the invention and the alignment schemes of fingerprint sensing mould group,
The reflected light signal intensity summation that electronic device can be sensed according to fingerprint sensing mould group, adjustment fingerprint sensing region are issued
Position of the light source pattern in display element, the center (the namely center in fingerprint sensing region) of light source pattern is aligned
In the center of fingerprint sensing mould group, and then promote the sensing efficiency of fingerprint sensing mould group.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
Detailed description of the invention
Fig. 1 is the fingerprint sensing region of the display element of one embodiment of the invention and the alignment schemes of fingerprint sensing mould group
Flow chart of steps.
Fig. 2 is the schematic diagram that electronic device is used in one embodiment of the invention.
Fig. 3 is strong by the optical signal for the illumination beam that the fingerprint sensing region of display element in one embodiment of the invention issues
Spend distribution map.
Fig. 4 A to Fig. 4 L is the schematic diagram that light source pattern is aligned to fingerprint sensing mould group in one embodiment of the invention.
Fig. 5 is the fingerprint sensing region of the display element of another embodiment of the present invention and the alignment schemes of fingerprint sensing mould group
Step flow chart.
Drawing reference numeral explanation
10: finger
20: display element
22: fingerprint sensing region
40: guide-lighting mould group
60: fingerprint sensing mould group
80: controller
100: electronic device
200: curved surface
A1: display area
A2: sensing area
B: illumination beam
C: center
D1: first direction
D2: second direction
L: light source pattern
S100~S104, S200~S210: step
Specific embodiment
Fig. 1 is the fingerprint sensing region of the display element of one embodiment of the invention and the alignment schemes of fingerprint sensing mould group
Flow chart of steps.Fig. 2 is the schematic diagram that electronic device is used in one embodiment of the invention.It please also refer to Fig. 1 and Fig. 2.This hair
A bright embodiment provides a kind of fingerprint sensing region 22 of display element 20 and the alignment schemes of fingerprint sensing mould group 60, this side
Method at least can be applied to electronic device 100 depicted in Fig. 2, but the present invention is not limited thereto.Electronic device 100 is, for example, intelligence
The portable electronic devices such as type mobile phone or tablet computer.Electronic device 100 includes display element 20, guide-lighting mould group 40 and fingerprint
Mould group 60 is sensed, wherein display element 20 has fingerprint sensing region 22, exposes to for issuing illumination beam B and is placed on fingerprint
The finger 10 of 22 top of sensing region, to carry out fingerprint sensing.
In this example it is shown that element 20 is, for example, display panel, touch-control display panel or above-mentioned and acupressure probe group
It closes.For example, display element 20 is, for example, organic light emitting display panel (Organic Light-Emitting Diode
Display panel, OLED display panel), but the present invention is not limited thereto.Alternatively, display element 20 can be
Touch-control display panel, such as with the organic light emitting display panel of multiple touch control electrodes.The multiple touch control electrode can be formed in
It on the outer surface of organic light emitting display panel or is embedded in organic light emitting display panel, and multiple touch control electrodes can be by
Touch detection is carried out from the mode of perhaps mutual tolerance.Alternatively, display element 20 can be the combination of acupressure probe and display panel or refer to
The combination of pressing plate and touch-control display panel.
In the present embodiment, guide-lighting mould group 40 is, for example, optical lens group, has collimator (collimators) structure,
And/or being includes lenticule (micro-lens) layer and/or micropore (pin-holes) layer.Optical lens group may include
The combination of one or more optical mirror slips with diopter, for example, it is saturating comprising biconcave lens, biconvex lens, concave-convex lens, convex-concave
The various combinations of the non-planar eyeglass such as mirror, plano-convex lens and plano-concave lens, to be applied to imaging type fingerprint acquisition apparatus.Citing
For, guide-lighting mould group 40 is made of two panels lens.It but in other embodiments, can also be three pieces lens or four lens groups
At the present invention is not limited thereto.In some embodiments, guide-lighting mould group 40 can also comprising collimator structure, aperture and/or
The optical elements such as shading element, to be applied to non-imaging type fingerprint acquisition apparatus.Therefore the kenel of the guide-lighting mould group 40 of the present invention and its
Type is simultaneously without restriction.
In the present embodiment, fingerprint sensing mould group 60 is, for example, to be arranged by multiple photodiodes (photodiode) array
Made of sensing device, but the present invention is not limited thereto.When being sensed, finger 10 is placed in or is approached display by user
The top in the fingerprint sensing region 22 of element 20, and the illumination beam B that the fingerprint sensing region 22 of display element 20 is issued shines
It is incident upon 10 back reflection of finger, and sequentially by display element 20 and guide-lighting mould group 40, and is transferred to fingerprint sensing mould group 60,
Fingerprint sensing mould group 60 can sense reflected light, and generate fingermark image accordingly to carry out identification of fingerprint.Fingerprint sensing mould group 60
Sense the display area A1 that area A2 can be less than or equal to fingerprint sensing region 22.
It says blanketly, fingerprint sensing mould group 60 is mounted in the lower section of display element 20, and its position corresponds to display
The fingerprint sensing region 22 of element 20.And the light that fingerprint sensing region 22 is issued can transmit after the reflection of user's finger 10
Reach fingerprint sensing mould group 60.Therefore, when the light-source brightness that fingerprint sensing region 22 is issued in display element 20 is uneven,
It will form light source pattern heterogeneous.And the center of above-mentioned light source pattern must be aligned with the center of fingerprint sensing mould group 60, with
Increase fingerprint sensing efficiency.The brightness summation that all sensing picture elements of fingerprint sensing mould group 60 are sensed is smaller, then senses
Efficiency is better.
In the present embodiment, electronic device 100 is also electrically connected at fingerprint sensing mould group 60 and display comprising controller 80
Element 20 to handle or calculate reflected light signal received by fingerprint sensing mould group 60, and controls light source pattern accordingly
Display position, that is, position of the fingerprint sensing region 22 in display element 20.Controller 80 is, for example, central processing unit
(central processing unit, CPU), microprocessor (microprocessor), digital signals processor (digital
Signal processor, DSP), programmed controller, programmable logic devices (programmable logic
Device, PLD) or other similar device or these devices combination, the present invention is not limited thereto.In addition, in an embodiment
In, each function of controller 80 can be implemented as multiple program codes.These program codes can be stored in memory body, by controlling
Device 80 processed executes these program codes.Alternatively, in one embodiment, each function of controller 80 can be implemented as one or more
Circuit.The present invention is not intended to limit with the mode of software or hardware come each function of implementation controller 80.
Fig. 3 is strong by the optical signal for the illumination beam that the fingerprint sensing region of display element in one embodiment of the invention issues
Spend distribution map.Fig. 4 A to Fig. 4 I is the schematic diagram that light source pattern is aligned to fingerprint sensing mould group in one embodiment of the invention.It please be first
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4 A.Firstly, executing step S100, controller 80 starts display element 20 with from fingerprint sensing area
Domain 22 issue illumination beam B, the finger 10 being pointed into above fingerprint sensing region 22, wherein finger 10 be also possible to other can
The object of reflected illumination light beam B, the present invention is not limited thereto.Wherein illumination beam B has light source pattern L, and light source pattern L
Light signal strength, which is distributed the light that the light signal strength from the closer first area in center is less than from the farther away second area in center, to be believed
Number intensity, for example, the lower distribution of then light signal strength more close from center C is presented.Specifically, in this example it is shown that
Element 20 includes that multiple display picture elements are arranged in array, is applied to the fingerprint sensing region 22 of display element 20 by control
The voltage value or current value of each display pixel, can control the light emission luminance of each display pixel.Therefore, when these displays
When the voltage value or different current value of picture element, then it may be formed at the light source pattern L that different location has different light emission luminance,
It is less than for example, the light signal strength from the closer first area in center is presented in light source pattern L from the farther away second area in center
Light signal strength.As depicted in Fig. 4 A, light source pattern L is divided into four regions, and the optical signal from the closer region in center is strong
Degree can be lower than the light signal strength from the farther away region in center.That is, then light more close from C at center is presented in light source pattern L
The lower non-homogeneous light source pattern L of signal strength, wherein in light source pattern L different location light signal strength difference Fig. 4 A extremely
It is that density effect is presented with gradient style in Fig. 4 L, indicates that light signal strength is lower if the dotted pattern the intensive.
In another embodiment, light signal strength distribution system is according to the distribution of the Gaussian function of three-dimensional space in gradually layer optical signal
Intensity distribution shows that Gaussian function distribution surface 200, numerical value of the mean camber 200 on vertical direction (Z axis) are as depicted in fig. 3
Indicate the light signal strength of the corresponding coordinate position (X and Y-axis) in light source pattern L.
Then, step S101 is executed, fingerprint sensing mould group 60 senses reflected light of the illumination beam B after object reflects, with
Obtain initial data.Specifically, to sense reflected light signal of the illumination beam B after object reflects strong for fingerprint sensing mould group 60
Degree, and initial data is the summation for the reflected light signal intensity that fingerprint sensing mould group 60 is sensed.In the present embodiment, refer to
The area that line senses mould group 60 is less than the area in the fingerprint sensing region 22 of display element 20.But the present invention is not limited thereto, example
Such as, in other embodiments, the area of fingerprint sensing mould group 60 can be equal to the face in the fingerprint sensing region 22 of display element 20
Product.Specifically, fingerprint sensing mould group 60 for example multiplies six matrixes corresponding to six in the fingerprint sensing region 22 of display element 20
The range that the display picture element of arrangement is covered, as depicted in Fig. 4 A.It should be noted that the light source pattern L due to illumination beam B is in
Now the light signal strength from the closer first area in center is less than the light signal strength from the farther away second area in center, or is in
The now lower non-homogeneous light source pattern L of then light signal strength more close from center C, therefore sensed when fingerprint sensing mould group 60
When reflected light signal intensity summation reaches minimum, then it represents that the center C of the light source pattern L of illumination beam B has been aligned in fingerprint
The center of mould group 60 is sensed, therefore fingerprint sensing mould group 60 can have optimal sensing efficiency.In Figure 4 A, illumination beam B
The center C of light source pattern L be not aligned in the center of fingerprint sensing mould group 60, therefore it is still necessary to adjust the position of light source pattern L
To reach optimal sensing efficiency.
It please also refer to Fig. 1, Fig. 2 and Fig. 4 B.Then, step S102 is executed, controller 80 adjusts the light source of illumination beam B
Pattern L is located at the position of display element 20.Specifically, in step s 102, light source pattern L is moved up along first direction D1
It is dynamic, the direction as depicted in Fig. 4 B from left to right, but the present invention is not limited thereto.In some embodiments, first direction D1 is also
It can be direction or other directions from right to left.Specifically, in this step, utilizing the fingerprint sense of adjustment display element 20
Survey the luminous position to adjust the light source pattern L of illumination beam B in region 22.That is, making the fingerprint sense of display element 20
The light signal strength for surveying multiple display picture elements in region 22, which generates, to be changed so that light source pattern L generates position on display element 20
It moves.It for example, can be by light by the light signal strength of the display picture element in the fingerprint sensing region 22 of control display element 20
Source pattern L is displaced to the right a display picture element, as depicted in Fig. 4 B.
Then, step S103 is executed, fingerprint sensing mould group 60 senses light of the illumination beam B adjusted after object reflects
Intensity, to be adjusted rear data, wherein data are the fingerprint after the position light source pattern L of adjustment illumination beam B after adjustment
The summation for the reflected light signal intensity that sensing mould group 60 is sensed.For example, in figure 4b, fingerprint sensing mould group 60 is felt
The summation of the reflected light signal intensity measured is data after adjusting.
It please also refer to Fig. 1, Fig. 2 and Fig. 4 C to Fig. 4 F.Then, step S104 is executed, according to initial data and adjustment
The position of the light source pattern L of data point reuse illumination beam B afterwards.Specifically, in step S104, may compare initial data and
Data and judge that the summation of the reflected light signal intensity that all sensing picture elements of fingerprint sensing mould group 60 are sensed is after adjustment
It decreases or increases.If reflected light signal intensity value summation reduces, adjusts light source pattern L continuation and moved along first direction D1 directly
Until the summation increase of reflected light signal intensity value.In addition, adjusting irradiation light if reflected light signal intensity value summation increases
The light source pattern L of beam B is moved until the summation increase of reflected light signal intensity value along the direction in contrast to first direction D1.
For example, in the present embodiment, when the position of light source pattern L is moved to Fig. 4 B by Fig. 4 A, fingerprint sensing mould group
60 sensed reflected light signal intensity summations are reduced before relatively moving light source pattern L.So the present embodiment can be by light source pattern L
Continue the distance for showing picture element to right translation one along first direction D1, as depicted in Fig. 4 C.
After the position of light source pattern L is moved to Fig. 4 C by Fig. 4 B, reflected light signal that fingerprint sensing mould group 60 is sensed
Intensity summation is reduced before relatively moving light source pattern L.The present embodiment will continue to the position of adjustment light source pattern L, to continue along the
One direction D1 shows the distance of picture element to right translation one, as depicted in Fig. 4 D.
After the position of light source pattern L is moved to Fig. 4 D by Fig. 4 C, reflected light signal that fingerprint sensing mould group 60 is sensed
Intensity summation is reduced before relatively moving light source pattern L.The present embodiment will continue to the position of adjustment light source pattern L, to continue along the
One direction D1 shows the distance of picture element to right translation one, as depicted in Fig. 4 E.
After the position of light source pattern L is moved to Fig. 4 E by Fig. 4 D, reflected light signal that fingerprint sensing mould group 60 is sensed
Intensity summation can preceding increase mobile compared with light source pattern L.The present embodiment can adjust the position of light source pattern L, be in reverse to first with edge
Direction D1 shows the distance of picture element to left one, as depicted in Fig. 4 F.That is, light source pattern L can be returned to and Fig. 4 D
Identical position.
Therefore, by above-mentioned step, the achievable light source pattern L of the present embodiment is in a first direction in the dimension where D1
Position adjustment.As illustrated in figure 4f, the seat of the center of the center C of light source pattern L and fingerprint sensing mould group 60 in the first direction dl
Cursor position is identical.
It please also refer to Fig. 1, Fig. 2, Fig. 4 F and Fig. 4 G.Then, the present embodiment will do it light source pattern L perpendicular to
Position adjustment on the second direction D2 of one direction D1.Specifically, the present embodiment can adjust the position of light source pattern L, make it
D2 or its negative side move up in a second direction.Wherein, second direction D2 is perpendicular to first direction D1, i.e., as illustrated in figure 4f by
Under supreme direction, but the present invention is not limited thereto.In the present embodiment, light source pattern L can be in the negative side of D2 in a second direction
To the distance of one display picture element of downward translation, as depicted in Fig. 4 G.
It please also refer to Fig. 1, Fig. 2 and Fig. 4 F to Fig. 4 L.When light source pattern L is moved on to by the position of Fig. 4 F the position of Fig. 4 G
When, the sensed reflected light signal intensity summation of fingerprint sensing mould group 60 will increase, that is, be higher than the mobile front-reflection light of light source pattern L
The summation of signal strength, this indicates the center C of light source pattern L far from the center of fingerprint sensing mould group 60.Therefore, this reality
Apply regular meeting by light source pattern L in a second direction D2 translate up one display picture element distance, as depicted in Fig. 4 H, with return to
The identical position Fig. 4 F.
Then, when light source pattern L moves on to the position of Fig. 4 H by the position of Fig. 4 G, what fingerprint sensing mould group 60 was sensed
Reflected light signal intensity summation is reduced before relatively moving light source pattern L.Therefore, the present embodiment can adjust light source pattern L along second
Direction D2 translates up the distance of a display picture element, as depicted in Fig. 4 I.
Then, when light source pattern L moves on to the position of Fig. 4 I by the position of Fig. 4 H, what fingerprint sensing mould group 60 was sensed
The total credit union of reflected light signal intensity is reduced before relatively moving light source pattern L.So the present embodiment can adjust light source pattern L and continue edge
The distance that a display picture element is translated up on second direction D2, as depicted in Fig. 4 J.
Then, when light source pattern L moves on to the position of Fig. 4 J by the position of Fig. 4 I, what fingerprint sensing mould group 60 was sensed
The total credit union of reflected light signal intensity is reduced before relatively moving light source pattern L.So adjustment light source pattern L continues in subsequent steps
The distance for translating up a display picture element on D2 in a second direction, as depicted in Fig. 4 K.
Then, when the position of light source pattern L is moved to Fig. 4 K by Fig. 4 J, reflection that fingerprint sensing mould group 60 is sensed
Light signal strength sum total will increase, that is, the summation of the reflected light signal intensity before being higher than light source pattern L movement, this indicates light source figure
C is far from the center of fingerprint sensing mould group 60 at the center of sample L.So the present embodiment can be by light source pattern L along second party
The distance for translating a display picture element downwards to the opposite direction of D2, as depicted in Fig. 4 L, to return to position identical with Fig. 4 J.Cause
This, by above-mentioned step, achievable light source pattern L is adjusted in the position where second direction D2 in dimension.As Fig. 4 L is drawn
Show, the center C system of light source pattern L is aligned in the center of fingerprint sensing mould group 60.
Fig. 5 is the fingerprint sensing region of the display element of another embodiment of the present invention and the alignment schemes of fingerprint sensing mould group
Step flow chart.It please also refer to Fig. 2 and Fig. 5.The alignment schemes of the present embodiment at least can be applied to electricity depicted in Fig. 2
Sub-device 100, but the present invention is not limited thereto.Firstly, executing step S200, start the fingerprint sensing region 22 of display element 20
To issue illumination beam B, wherein illumination beam B has light source pattern.Then, step S201 is executed, fingerprint sensing mould group 60 is felt
Survey reflected light signal intensity summation of the illumination beam B after object reflects.Then, step S202 is executed, light source pattern edge is adjusted
First direction or second direction are mobile.In the present embodiment, first direction is horizontal direction, and second direction is vertical direction,
Two directions are mutually perpendicular to.For convenience of explanation, below for being moved along first direction.Then, step S203, fingerprint sense are executed
It surveys mould group 60 and senses reflected light signal intensity summation of the light source pattern after object reflects.
Then, it executes step S204 and judges whether reflected light signal intensity summation reduces according to sensing result.If reflection
Light signal strength summation reduces, and thens follow the steps S205, continues adjustment light source pattern and moves along first direction or second direction, and
And step S203 and step S204 is repeated, until reflected light signal intensity summation increase.In above-mentioned, if reflected light
The summation of signal strength is promoted, then completes step S204.Then, step S206 is executed, adjusts light source pattern along first direction
Reverse movement.Then, step S207 is executed, fingerprint sensing mould group 60 senses light source pattern (illumination beam B) after object reflects
Reflected light signal intensity summation.
Then, it executes step S208 and judges whether reflected light signal intensity summation reduces according to sensing result.If reflection
The summation of light signal strength is promoted, then returns to step S203.If reflected light signal intensity summation reduces, S209 is thened follow the steps,
Terminate the position adjustment of first direction or second direction (in the present embodiment, that is, first direction), and judges other direction (in this reality
Apply example i.e. second direction) whether adjust.If other direction (in the present embodiment, that is, second direction) is not yet adjusted, with class
As mode execute step S202 to step S208 to adjust the position of light source pattern in a second direction.Adjust light source pattern edge
The detailed step and mode that second party moves up can refer to the detailed step that adjustment light source pattern is moved up along first party and
Mode, so it will not be repeated.In above-mentioned, if other direction (i.e. second direction) has adjusted, step S209 is completed.Finally, executing
Step S210 completes adjustment, that is to say, that the center of light source pattern has been aligned in the center of fingerprint sensing mould group.
In conclusion in the fingerprint sensing region of display element of the invention and the alignment schemes of fingerprint sensing mould group,
The reflected light signal intensity summation that electronic device can be sensed according to fingerprint sensing mould group, adjustment fingerprint sensing region are issued
Position of the light source pattern in display element, the center (the namely center in fingerprint sensing region) of light source pattern is aligned
In the center of fingerprint sensing mould group, and then promote the sensing efficiency of fingerprint sensing mould group.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention., any technical field
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, thus it is of the invention
Protection scope when view appended claims range institute defender subject to.
Claims (9)
1. the alignment schemes in a kind of fingerprint sensing region of display element and fingerprint sensing mould group, which is characterized in that be suitable for electronics
Device, the electronic device include display element, controller and fingerprint sensing mould group, and the display element has fingerprint sensing
Region, the controller are electrically connected at the display element and the fingerprint sensing mould group, and the fingerprint sensing mould group
It is positioned at the lower section of the display element, the alignment schemes include:
The controller starts the display element to issue illumination beam from the fingerprint sensing region, is pointed into positioned at the finger
Object above line sensing region, wherein the illumination beam has light source pattern, and the light signal strength of the light source pattern
The light signal strength from the closer first area in center is presented less than the light signal strength from the farther away second area in center in distribution；
The fingerprint sensing mould group senses reflected light of the illumination beam after object reflection, to obtain initial data,
The summation for the reflected light signal intensity that wherein initial data is sensed by the fingerprint sensing mould group；
The light source pattern that the controller adjusts the illumination beam is located at the position of the display element；
The fingerprint sensing mould group senses reflected light of the illumination beam adjusted after object reflection, to be adjusted
Data after whole, wherein after the adjustment data be after adjusting the position of the light source pattern of the illumination beam, it is described
The summation for the reflected light signal intensity that fingerprint sensing mould group is sensed；And
The position of the light source pattern according to illumination beam described in data point reuse after the initial data and the adjustment.
2. the alignment schemes in the fingerprint sensing region of display element according to claim 1 and fingerprint sensing mould group, special
Sign is that the position that the light source pattern that the controller adjusts the illumination beam is located at the display element includes:
The light source pattern is adjusted to move up along first party.
3. the alignment schemes in the fingerprint sensing region of display element according to claim 2 and fingerprint sensing mould group, special
Sign is, the position of the light source pattern according to illumination beam described in data point reuse after the initial data and the adjustment
Include:
Data reduce or increase to judge reflected light signal intensity summation after comparing the initial data and the adjustment；
If reflected light signal intensity value summation reduces, the light source pattern is adjusted along the first party and is move upwardly until reflection
Light signal strength summation increases；And
If reflected light signal intensity value summation increases, adjusts the light source pattern and moved along the direction in contrast to the first direction
It moves until reflected light signal intensity summation increases.
4. the alignment schemes in the fingerprint sensing region of display element according to claim 3 and fingerprint sensing mould group, special
Sign is, the position of the light source pattern according to illumination beam described in data point reuse after the initial data and the adjustment
Also include:
If reflected light signal intensity value summation is changed to increase by reduction after movement, adjust before the light source pattern moves back to
Secondary position.
5. the alignment schemes in the fingerprint sensing region of display element according to claim 2 and fingerprint sensing mould group, special
Sign is that the position that the light source pattern that the controller adjusts the illumination beam is located at the display element also includes:
The light source pattern upper movement in a second direction is adjusted, wherein the second direction is perpendicular to the first direction.
6. the alignment schemes in the fingerprint sensing region of display element according to claim 5 and fingerprint sensing mould group, special
Sign is, the position of the light source pattern according to illumination beam described in data point reuse after the initial data and the adjustment
Also include:
Data reduce or increase to judge reflected light signal intensity summation after comparing the initial data and the adjustment；
If reflected light signal intensity value summation reduces, the light source pattern is adjusted along the second party and is move upwardly until reflection
Light signal strength value summation increases；And
If reflected light signal intensity value summation increases, adjusts the light source pattern and moved along the direction in contrast to the second direction
It moves until reflected light signal intensity summation increases.
7. the alignment schemes in the fingerprint sensing region of display element according to claim 6 and fingerprint sensing mould group, special
Sign is, the position of the light source pattern according to illumination beam described in data point reuse after the initial data and the adjustment
Also include:
If reflected light signal intensity value summation is changed to increase by reduction after movement, adjust before the light source pattern moves back to
Secondary position.
8. the alignment schemes in the fingerprint sensing region of display element according to claim 1 and fingerprint sensing mould group, special
Sign is that the display element is display panel, is arranged in array comprising multiple display picture elements.
9. the alignment schemes in the fingerprint sensing region of display element according to claim 8 and fingerprint sensing mould group, special
Sign is that the position that the light source pattern that the controller adjusts the illumination beam is located at the display element includes:
The controller adjusts the light emission luminance of multiple display picture elements in the fingerprint sensing region of the display panel, makes
The light source pattern is obtained to be displaced as unit of single display picture element.
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| US201862744209P | 2018-10-11 | 2018-10-11 | |
| US62/744,209 | 2018-10-11 |
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Cited By (2)
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| CN111539392A (en) * | 2020-01-16 | 2020-08-14 | 神盾股份有限公司 | Fingerprint sensing module |
| CN111552109A (en) * | 2020-06-09 | 2020-08-18 | 京东方科技集团股份有限公司 | Display module, driving method thereof and display device |
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| TWI803870B (en) * | 2020-05-11 | 2023-06-01 | 大陸商上海耕岩智能科技有限公司 | Fingerprint imaging device and fingerprint imaging method |
| CN111552108B (en) * | 2020-06-08 | 2022-11-25 | 京东方科技集团股份有限公司 | Display device and fingerprint identification method thereof |
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| TWI701483B (en) | 2020-08-11 |
| TW202014772A (en) | 2020-04-16 |
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