CN104021374B - A kind of fingerprint sensor array - Google Patents
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- CN104021374B CN104021374B CN201410231153.7A CN201410231153A CN104021374B CN 104021374 B CN104021374 B CN 104021374B CN 201410231153 A CN201410231153 A CN 201410231153A CN 104021374 B CN104021374 B CN 104021374B
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Abstract
The present invention relates to sensor, discloses a kind of fingerprint sensor array.In the present invention, comprising N kind pixel cells, N is the natural number more than 1；The number of every kind of pixel cell is all higher than or equal to 1；All pixels unit arrangement form array；Wherein, at least one sensor built in each pixel cell；Sensor type in same pixel cell is identical；Sensor at least built in two kinds of pixel cells is different type or various sizes of sensor.The present invention is simultaneously comprising the larger sensor of area and the less sensor of area so that the sensitivity of fingerprint sensor is higher, while the resolution ratio of the fingerprint image gathered is higher.
Description
Technical field
The present invention relates to sensor, more particularly to fingerprint sensor.
Background technology
Fingerprint identification technology is a kind of new and high technology that latest developments are got up.Fingerprint recognition be using human body uniqueness with
Constant the features of sex physiology, enter fingerprint as one kind " identity card living " of human body or special seal carried with
A kind of technology of row identification.
Fingerprint recognition is realized by fingerprint sensor.Fingerprint sensor is built-in with fingerprint sensor array, for adopting
Collect finger print information.Moreover, fingerprint sensor array includes the pixel cell of periodic arrangement, as shown in Figure 1.In Fig. 1,101
For pixel cell, the area of pixel cell is larger, and size all same.Wherein, the size of pixel cell determines sensing
The sensitivity of device and the resolution ratio of the fingerprint image of collection.
At present, it is 50 μm of 50 μ m, so the spirit of fingerprint sensor because the area of pixel cell in sensor array is larger
Sensitivity is higher, and finger detects finger print information away from fingerprint sensor without too near can.But due to the area of pixel cell
Larger, the fingerprint image resolution ratio that result in collection declines, fogging image.
The content of the invention
It is an object of the invention to provide a kind of fingerprint sensor array so that the sensitivity of fingerprint sensor is higher, together
When the resolution ratio of fingerprint image that gathers it is higher, image becomes apparent from accurately.
In order to solve the above technical problems, the invention provides a kind of fingerprint sensor array, comprising N kind pixel cells, its
In, N is the natural number more than 1；The number of every kind of pixel cell is all higher than or equal to 1；
The pixel cell arrangement form array；
Wherein, at least one sensor built in each described pixel cell；Sensing in the same pixel cell
Device type is identical；Sensor at least built in two kinds of pixel cells is different type or various sizes of sensor；
The area of different type or the various sizes of sensor differs.
Embodiment of the present invention in terms of existing technologies, comprising at least one pixel cell, and each pixel
At least one sensor built in unit, wherein, the sensor type in each pixel cell is identical, different type or difference
The area of the sensor of size differs, it is intended to the advantages of the larger sensor of bonded area and area less sensor,
While ensureing that fingerprint transducer sensitivity is higher, to improve the resolution ratio of the fingerprint image of collection.Specifically, it is of the invention
In fingerprint sensor array, comprising N kind pixel cells, wherein, N is natural number more than 1, that is to say, that includes at least one
Kind pixel cell；The number of every kind of pixel cell is all higher than or equal to 1, all pixels unit arrangement form array, wherein, often
At least one sensor built in a kind of pixel cell, the sensor type in same pixel cell is identical, and at least two kinds
Sensor built in pixel cell is different type or various sizes of sensor, it is important that the area of various sensors
Differ.So, fingerprint sensor array is not only comprising the larger sensor of area so that the sensitivity of fingerprint sensor compared with
It is high；Also include the less sensor of area so that the fingerprint image resolution ratio of fingerprint sensor collection is higher.So present invention
So that the sensitivity of fingerprint sensor is higher, while the resolution ratio of the fingerprint image gathered is higher, and image becomes apparent from accurately.
In addition, N is equal to 2；
The N kinds pixel cell is the first pixel cell and the second pixel cell.
Moreover, first pixel cell is arranged in around second pixel cell, three-back-shaped array is formed；
Wherein, 1 first sensor is included in first pixel cell, at least 1 is included in second pixel cell
Individual second sensor；The area of the second sensor of the area of the first sensor at least above 2 times.
This is designed according to the characteristics of close outer thin in fingerprint lines in the region for being used to gather fingerprint image.Due to collection
Fingerprint lines core than comparatively dense, the center that the less second sensor of area is placed in fingerprint sensor array
Position so that the resolution ratio of the fingerprint image of collection is higher, and image becomes apparent from accurately.Simultaneously as the shape of finger is arc
Face, finger peripheral part can be bigger than core apart from the distance of fingerprint sensor, and the larger first sensor of area is placed in
Peripheral position in fingerprint sensor array, that is, be placed in around second sensor so that clear in the fingerprint image for ensureing collection
The sensitivity of fingerprint sensor is higher on the premise of clear.So, the larger first sensor of bonded area and area less the
Two sensors so that the sensitivity of fingerprint sensor is higher, while the resolution ratio of the fingerprint image gathered is higher, and image is more clear
It is clear accurate.
In addition, the N kinds pixel cell is alternately arranged in periodicity.
So, N kinds pixel cell is periodically alternately arranged, that is to say, that the larger sensor of area and area are less
Sensor is also alternately arranged in periodicity, that is, periodically spaced, and is evenly distributed.The larger sensor of area makes finger
The sensitivity of line sensor is higher, more sensitive to fingerprint；The less sensor of area makes the fingerprint image that fingerprint sensor gathers
Resolution ratio is higher, and image is apparent accurate.N kinds pixel cell periodically it is spaced cause fingerprint sensor sensitivity compared with
Height, while the fingerprint image resolution ratio gathered is higher, image becomes apparent from accurately.Present embodiment ensure that embodiment party of the present invention
The flexibility of formula.
In addition, the same pixel cell repeated arrangement on an axial direction；On another axial direction by
At least two pixel cells are alternately arranged in periodicity.
This is the another way of the larger sensor of area sensor arrangement less with area so that fingerprint sensor
Sensitivity it is higher, while gather fingerprint image resolution ratio it is higher, image becomes apparent from accurately.Present embodiment ensure that this
The flexibility of invention embodiment.
Brief description of the drawings
Fig. 1 is the schematic diagram of fingerprint sensor array of the prior art；
Fig. 2 is the schematic diagram according to the fingerprint sensor array of second embodiment of the invention；
Fig. 3 is the schematic diagram according to the fingerprint sensor array of third embodiment of the invention；
Fig. 4 is the schematic diagram according to the fingerprint sensor array of four embodiment of the invention；
Fig. 5 is the schematic diagram according to the fingerprint sensor array of fifth embodiment of the invention；
Fig. 6 is the schematic diagram according to the fingerprint sensor array of sixth embodiment of the invention；
Fig. 7 is the schematic diagram according to the fingerprint sensor array of seventh embodiment of the invention；
Fig. 8 is the schematic diagram according to the fingerprint sensor array of eighth embodiment of the invention；
Fig. 9 is the schematic diagram according to the fingerprint sensor array of ninth embodiment of the invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, each reality below in conjunction with accompanying drawing to the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
In order that reader more fully understands the application and proposes many ins and outs.But even if without these ins and outs and base
Many variations and modification in following embodiment, each claim of the application technical side claimed can also be realized
Case.
The first embodiment of the present invention is related to a kind of fingerprint sensor array, comprising N kind pixel cells, wherein, N is big
In 1 natural number.That is, fingerprint sensor array includes at least one pixel cell.Moreover, the number of every kind of pixel cell
Mesh is all higher than or equal to 1.
All pixels unit arrangement form array, wherein, at least one sensor, same built in each pixel cell
Sensor type in pixel cell is identical, and the sensor at least built in two kinds of pixel cells is for different type or not
With the sensor of size, it is important that the area of different type or various sizes of sensor differs, that is to say, that
Both comprising the larger sensor of area in fingerprint sensor array, also comprising the less sensor of area.
Meanwhile by information exchange between adjacent sensor, and fingerprint image is restored according to the continuity of fingerprint.
In terms of existing technologies, the fingerprint sensor array in the present invention includes at least one pixel cell, and often
The number of kind pixel cell is all higher than or equal to 1；All pixels unit arrangement form array；Wherein, each pixel cell
Built-in at least one sensor, the sensor type in same pixel cell are identical, it is important that different type or difference
The area of the sensor of size differs；That is, fingerprint sensor array also wraps both comprising the larger sensor of area
Containing the less sensor in face, it is intended to the advantages of the larger sensor of bonded area and area less sensor.Due to area compared with
Big sensor so that the sensitivity of fingerprint sensor is higher；The less sensor of area so that the finger of fingerprint sensor collection
Print image resolution ratio is higher.So the invention enables the sensitivity of fingerprint sensor is higher, while point of the fingerprint image gathered
Resolution is higher, and image becomes apparent from accurately.
Second embodiment of the present invention is related to a kind of fingerprint sensor array.Second embodiment is in first embodiment
On the basis of made further refinement, give the concrete structure of fingerprint sensor array.
In the present embodiment, N is the first pixel cell and the second pixel cell equal to 2, N kinds pixel cell, wherein,
1 first sensor is included in one pixel cell, at least one second sensor is included in the second pixel cell.Fingerprint sensor
The concrete structure of array is as shown in Figure 2.
In fig. 2,201 be the first pixel cell, refers to first sensor together, 202 be the second pixel cell, and 2021 be second
Sensor.First pixel cell is arranged in around the second pixel cell, forms three-back-shaped array；Second sensor is by default
Periodic arrangement forms array；The area of first sensor is at least greater than or equal to the area of 2 times of second sensor.
In the present embodiment, equivalent to the one less rectangle of area of Back Word type and the larger rectangular centre of an area
Overlap, the combination pattern that long side is parallel to each other, the region between two rectangles is above-mentioned Back Word type.Multiple first pixel cells
Array is formed in Back Word type area arrangement；Region in the less rectangle of area is the second pixel cell.Wherein, the first pixel list
1 first sensor is included in member, all first sensors form array by default periodic arrangement；Wrapped in second pixel cell
Containing multiple second sensors, all second sensors also form array by default periodic arrangement；The area of first sensor is big
In the area of second sensor.
That is, the area of the second sensor built in the second pixel cell is less than first built in the first pixel cell
The area of sensor, and the second pixel cell is located at the centre of the array of the first pixel cell formation, i.e., is passed in fingerprint
In sensor array, the small second sensor of area is located at centre, and the larger first sensor of area is distributed in the second sensing
Around device.
Meanwhile by information exchange between adjacent sensor, and fingerprint image is restored according to the continuity of fingerprint.
This is designed according to the characteristics of close outer thin in fingerprint lines in the region for being used to gather fingerprint image.Due to collection
Fingerprint lines core than comparatively dense, the center that the less second sensor of area is placed in fingerprint sensor array
Position so that the resolution ratio of the fingerprint image of collection is higher, and image becomes apparent from accurately.Simultaneously as the fingerprint lines of collection
Periphery than sparse, peripheral position that the larger first sensor of area is placed in fingerprint sensor array is put
Around second sensor so that ensure collection fingerprint image clearly under the premise of fingerprint sensor sensitivity compared with
It is high.So, the larger first sensor of bonded area and the less second sensor of area so that the sensitivity of fingerprint sensor
It is higher, while the resolution ratio of the fingerprint image gathered is higher, image becomes apparent from accurately.
Third embodiment of the present invention is related to a kind of fingerprint sensor array.3rd embodiment is in first embodiment
On the basis of made further refinement, give the concrete structure of fingerprint sensor array.
In the present embodiment, N kinds pixel cell is alternately arranged in periodicity.Preferably, N is equal to 2, N kind pixel cells
For the first pixel cell and the second pixel cell, wherein, includes 1 3rd sensor, the second pixel list in the first pixel cell
The sensor of at least one the 4th is included in member.The concrete structure of fingerprint sensor array is as shown in Figure 3.
In figure 3,301 be the first pixel cell, refers to 3rd sensor together, and 302 be the second pixel cell, and 3021 be the 4th
Sensor.First pixel cell, in being periodically alternately arranged, forms array with the second pixel cell.Wherein, the first pixel cell
It is rectangle with the second pixel cell, the length of rectangle is A, and wide is that B, A and B are natural number, can be set as needed
It is fixed；1 3rd sensor built in first pixel cell, 3rd sensor are rectangle, a length of A, a width of B, with the first pixel cell
Shape, size it is identical；The 4th sensors of L built in second pixel cell, L are more than 1, the 4th sensor for rectangle, it is a length of
C, a width of D, C are natural number with D, and C is less than or equal to A, and D is less than or equal to B, this L the 4th cycle sensors
Arrangement, form array.
In the present embodiment, L is equal to 4, and A equals B.That is, the first pixel cell is with the second pixel cell
Square.Meanwhile second 4 the 4th sensor built in pixel cell, and the square formation of arrangement form 2 × 2.
Meanwhile by information exchange between adjacent sensors, and fingerprint image is restored according to the continuity of fingerprint.
So, the first pixel cell and the second pixel cell are square.Wherein, 1 built in the first pixel cell
Three sensors, the 3rd sensor are also square；4 the 4th sensor arrangement forms 2 × 2 built in second pixel cell
Square formation.First pixel cell and the second pixel cell are periodically alternately arranged, that is to say, that the larger 3rd sensor of area with
Less 4th sensor of area is also alternately arranged in periodicity, and is evenly distributed.The larger 3rd sensor of area makes finger
The sensitivity of line sensor is higher, more sensitive to light, and when finger is less near away from fingerprint sensor, can detects fingerprint
Information；The fingerprint image resolution ratio that less 4th sensor of area gathers fingerprint sensor is higher, and image is apparent accurate.
3rd sensor and the spaced sensitivity finger that is higher, while gathering for causing fingerprint sensor of periodicity of the 4th sensor
Print image resolution ratio is higher, and image becomes apparent from accurately.Present embodiment ensure that the flexibility of embodiment of the present invention.
The 4th embodiment of the present invention is related to a kind of fingerprint sensor array.4th embodiment and the 3rd embodiment
Roughly the same, the main distinction is：In the third embodiment, the first pixel cell and the second pixel cell are square,
Second pixel cell includes 4 the 4th sensors；And in the 4th embodiment, the first pixel cell and the second pixel cell are equal
For rectangle, the second pixel cell includes 2 the 4th sensors, specific as shown in Figure 4.
In Fig. 4,301 be the first pixel cell, and 302 be the second pixel cell, and 3021 be the 4th sensor.
In the present embodiment, L is equal to 2, and C, D are equal to B, and A is more than 2 times of B.That is, the first pixel cell
It is rectangle with the second pixel cell, and is alternately arranged in periodicity.Wherein, the first pixel cell includes 1 the 3rd sensing
Device, shape, the size of 3rd sensor are identical with the first pixel cell；Second pixel cell includes 2 the 4th sensors, and the 4th
Sensor is square, the array of arrangement form 1 × 2, moreover, fourth sensor of the area of 3rd sensor more than 2 times
Area.
So, because the area of 3rd sensor is larger so that the sensitivity of fingerprint sensor is higher, meanwhile, the 4th passes
The area of sensor is smaller so that the fingerprint image resolution ratio of collection is higher, and image becomes apparent from accurately.Present embodiment ensure that
The flexibility of embodiment of the present invention.
The 5th embodiment of the present invention is related to a kind of fingerprint sensor array.5th embodiment and the 3rd embodiment
Roughly the same, the main distinction is：In the third embodiment, the first pixel cell replaces with the second pixel cell in periodicity
Arrangement, and be evenly distributed, arrangement is non-directional；In the 5th embodiment, the same pixel list on an axial direction
First repeated arrangement, the first pixel cell arranges with the second pixel cell in being periodically alternately arranged on another axial direction
With directionality.
In the present embodiment, the same pixel cell repeated arrangement on an axial direction, in another axial direction side
It is alternately arranged upwards by least two pixel cells in periodicity.Preferably, N is the first pixel list equal to 2, N kinds pixel cell
Member and the second pixel cell.
Specifically, the first pixel cell is alternately arranged in periodicity in the X-axis direction with the second pixel cell, same
Pixel cell repeated arrangement in the Y-axis direction；Wherein, the direction of a line of the X-direction along the first pixel cell, Y direction
It is specific as shown in Figure 5 perpendicular to X-direction.
So, the first pixel cell is periodically alternately arranged in the X-axis direction with the second pixel cell, same pixel list
First repeated arrangement in the Y-axis direction, it is the another way of the larger sensor of area sensor arrangement less with area, makes
Fingerprint sensor sensitivity it is higher, while gather fingerprint image resolution ratio it is higher, image becomes apparent from accurately.This implementation
Mode ensure that the flexibility of embodiment of the present invention.
The 6th embodiment of the present invention is related to a kind of fingerprint sensor array.6th embodiment and the 3rd embodiment
Roughly the same, the main distinction is：In the third embodiment, the first pixel cell replaces with the second pixel cell in periodicity
Arrangement, and be evenly distributed, it is flat between the fingerprint image resolution ratio of the sensitivity and the collection that have reached fingerprint sensor array
Weighing apparatus；In the 6th embodiment, the first pixel cell and the second pixel cell arrangement form array, an at least behavior in array
The repeated arrangement of one pixel cell, it is specific as shown in Figure 6.In the present embodiment, the first pixel cell proportion is larger, main
Make it that the sensitivity of fingerprint sensor array is higher, meanwhile, the resolution ratio of the small size fingerprint image for improving collection.
In the present embodiment, in array the same pixel cell of an at least behavior repeated arrangement.Preferably, N is equal to
2, N kind pixel cells are the first pixel cell and the second pixel cell.In an array, the repeated arrangement of the first pixel cell,
The periodicity of one pixel cell and the second pixel cell be alternately arranged it is alternate, wherein, the first pixel cell include area it is larger
Sensor, the second pixel cell includes the less sensor of area, main to cause because the first pixel cell proportion is larger
The sensitivity of fingerprint sensor is higher, meanwhile, and slightly improve the resolution ratio of the fingerprint image of collection.Present embodiment ensures
The flexibility of embodiment of the present invention, suitable for the fingerprint sensor higher to sensitivity requirement.
The 7th embodiment of the present invention is related to a kind of fingerprint sensor array.7th embodiment is in first embodiment
On the basis of made further refinement, give the concrete structure of fingerprint sensor array.
In the present embodiment, N is the first pixel cell and the second pixel cell equal to 2, N kinds pixel cell, and first
The area of second pixel cell of the area of pixel cell more than 2 times.The concrete structure of fingerprint sensor array is as shown in Figure 7.
In the figure 7,301 be the first pixel cell, and 302 be the second pixel cell.First pixel cell and the second pixel list
Member is rectangle, and the first pixel cell is alternately arranged with the second pixel cell in periodicity.Wherein, the first pixel cell is a length of
E, a width of F, E, F are natural number；Second pixel cell a length of G, a width of F, G are natural number, and E is more than twice of G.First pixel
1 the 5th sensor built in unit, the 5th sensor are rectangle, a length of E, a width of F；1 the 6th biography built in second pixel cell
Sensor, the 6th sensor are rectangle, a length of G, a width of F.
That is, the long side of the first pixel cell is more than 2 times of the long side of the second pixel cell, and short side is identical.The
1 the 5th sensor only is included in one pixel cell, shape, the size of the 5th sensor are identical with the first pixel cell respectively；
Only include 1 the 6th sensor in second pixel cell, the shape of the 6th sensor, size respectively with the second pixel cell phase
Together.
So, the first pixel cell and the second pixel cell are rectangle, and short side is equal, due to the first pixel cell
Long side is more than 2 times of the long side of the second pixel cell, so second pixel cell of the area of the first pixel cell more than 2 times
Area.First pixel cell is alternately arranged with the second pixel cell in periodicity, that is to say, that the first pixel cell and the second picture
Plain unit is staggered, and similarly, the 5th sensor and the 6th sensor are also such.Present embodiment is the larger sensing of area
The another way of device sensor arrangement less with area, equally so that the sensitivity of fingerprint sensor is higher, gathers simultaneously
Fingerprint image resolution ratio it is higher, image becomes apparent from accurately.Present embodiment ensure that the flexibility of embodiment of the present invention.
The 8th embodiment of the present invention is related to a kind of fingerprint sensor array.8th embodiment is in first embodiment
On the basis of made further refinement, give the concrete structure of fingerprint sensor array.
In the present embodiment, N is equal to 3.N kinds pixel cell is the 7th pixel cell, the 8th pixel cell and the 9th picture
Plain unit, it is specific as shown in Figure 8.Wherein, 801 be the 7th pixel cell, and 802 be the 8th pixel cell, and 803 be the 9th pixel list
Member.N kinds pixel cell is alternately arranged in periodicity.That is, 3 kinds of pixel cells cycle property on an axial direction replaces
Arrangement, it is alternately arranged in the other directions and periodically.
As shown in figure 8, the 7th pixel cell, the 8th pixel cell and the 9th pixel cell are rectangle, the width of three
It is identical, it is H, length is different, respectively I, J, K, wherein, H, I, J, K are natural number, and I is more than J, and J is more than K, and I is extremely
It is more than 2 times of K less.1 the 7th sensor built in 7th pixel cell, the size of the 7th sensor, shape respectively with the 7th picture
Plain unit is identical；1 the 8th sensor built in 8th pixel cell, the size of the 8th sensor, shape respectively with the 8th pixel
Unit is identical；1 the 9th sensor built in 9th pixel cell, the size of the 9th sensor, shape respectively with the 9th pixel list
Member is identical.
Because the 7th sensor, the 8th sensor are identical with the 9th sensor width, length differs, so various types of
The sensor area of type differs, wherein, the area of the 7th sensor is maximum, and the area of the 9th sensor is minimum, and area
The 7th maximum sensor is at least 2 times of the 9th minimum sensor of area.Because the if face of various types of sensors
Product moment is not little, then the resolution ratio of fingerprint image of the sensitivity of fingerprint sensor with gathering will not obtain larger carry
It is high.
Present embodiment is the another way of the larger sensor of area sensor arrangement less with area, equally,
So that the sensitivity of fingerprint sensor is higher, while the fingerprint image resolution ratio gathered is higher, and image becomes apparent from accurately.This reality
The mode of applying ensure that the flexibility of embodiment of the present invention.
The 9th embodiment of the present invention is related to a kind of fingerprint sensor array.9th embodiment is in first embodiment
On the basis of made further refinement, give the concrete structure of fingerprint sensor array.
In the present embodiment, N kinds pixel cell be the tenth pixel cell, the 11st pixel cell ..., (N+9)
Pixel cell, it is specific as shown in Figure 9.Wherein, 901 be (N+9) pixel cell, and 902 be (N+8) pixel cell, and 903 be
(N+7) pixel cell, 904 be the tenth pixel cell, and 905 be the symmetry axis of fingerprint sensor array.Wherein, N kinds pixel cell
Area increase successively according to order, and be symmetrically arranged on the symmetry axis of fingerprint sensor array.
In the present embodiment, 1 the tenth sensor built in the tenth pixel cell, size, the shape point of the tenth sensor
It is not identical with the tenth pixel cell；1 the 11st sensor built in 11st pixel cell, size, the shape of the 11st sensor
Shape is identical with the 11st pixel cell respectively；……；1 (N+9) sensor built in (N+9) pixel cell, (N+9) are passed
Size, the shape of sensor are identical with (N+9) pixel cell respectively.That is, the area of sensor also according to order successively
Increase.
As shown in figure 9, the area of various pixel cells increases successively on the direction away from fingerprint sensor array symmetry axis
Greatly.This is also to be designed according to the characteristics of close periphery is dredged among fingerprint lines to a certain extent.Due to the fingerprint lines of collection
Center section than comparatively dense, the middle part that the less sensor of area is placed in fingerprint sensor array so that collection
Fingerprint image resolution ratio it is higher, image becomes apparent from accurately.Simultaneously as the periphery of the fingerprint lines of collection compares
Peripheral position sparse, that the larger sensor of area is placed in fingerprint sensor array, and the area of sensor is along remote
The direction of fingerprint sensor array symmetry axis increases successively so that fingerprint sensor ensure collection fingerprint image clearly before
Sensitivity is put gradually to be improved, and avoid collection fingerprint image change resolution it is lofty, fingerprint image regionality is not
Clearly.
Present embodiment is the another way of the larger sensor of area sensor arrangement less with area so that is referred to
Line sensor ensure collection fingerprint image clearly under the premise of sensitivity be gradually improved, and avoid collection fingerprint image
The change resolution of picture is lofty, and fingerprint image regionality is unintelligible.Present embodiment ensure that the flexible of embodiment of the present invention
Property.
It should be noted that the crucial of the present invention is including the larger sensor of area simultaneously in fingerprint sensor array
With the less sensor of area so that the image resolution ratio of collection is also higher simultaneously for fingerprint sensor in higher sensitivity, figure
As clear accurate.The situation that pixel cell is only rectangle for rectangle, sensor is only listed in the respective embodiments described above, in reality
In, any conversion for being made to above-mentioned figure, such as triangle, hexagon, within protection scope of the present invention.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (6)
- A kind of 1. fingerprint sensor array, it is characterised in that comprising N kind pixel cells, wherein, N is the natural number more than 1；Often The number of kind pixel cell is all higher than or equal to 1；The pixel cell arrangement form array；Wherein, at least one sensor built in each described pixel cell；Sensor class in the same pixel cell Type is identical；Sensor at least built in two kinds of pixel cells is different type or various sizes of sensor；It is different The area of type or the various sizes of sensor differs；The N kinds pixel cell is alternately arranged in periodicity, adjacent Sensor between by information exchange, and according to the continuity of fingerprint restore fingerprint image.
- 2. fingerprint sensor array according to claim 1, it is characterised in that N is equal to 2；The N kinds pixel cell is the first pixel cell and the second pixel cell.
- 3. fingerprint sensor array according to claim 1, it is characterised in that same described in an at least behavior in the array A kind of repeated arrangement of pixel cell.
- 4. fingerprint sensor array according to claim 1, it is characterised in that same described on an axial direction Pixel cell repeated arrangement；It is alternately arranged on another axial direction by least two pixel cells in periodicity.
- 5. fingerprint sensor array according to claim 1, it is characterised in that the N kinds pixel cell is on the finger The symmetry axis of line sensor array is symmetrically arranged.
- 6. fingerprint sensor array according to claim 1, it is characterised in that the area of the maximum sensor of area At least 2 times of the minimum sensor of area.
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| CN105488451B (en) * | 2014-09-26 | 2019-07-12 | 上海思立微电子科技有限公司 | A kind of fingerprint Identification sensor |
| US9721142B2 (en) * | 2015-06-26 | 2017-08-01 | Synaptics Incorporated | Multi-resolution fingerprint sensor |
| CN106599822B (en) * | 2016-12-08 | 2019-11-12 | 江苏邦融微电子有限公司 | A kind of the fingerprint collecting unit array and its acquisition method of variable-resolution |
| CN106845340B (en) * | 2016-12-13 | 2021-07-23 | 华勤技术股份有限公司 | User equipment, fingerprint identification array and control method thereof |
| CN106845402A (en) * | 2017-01-20 | 2017-06-13 | 海迪科（南通）光电科技有限公司 | A kind of novel finger print identification sensor |
| CN108416247A (en) | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN108416248A (en) | 2017-02-09 | 2018-08-17 | 上海箩箕技术有限公司 | Display module |
| CN109598182B (en) * | 2017-09-30 | 2020-12-25 | 比亚迪股份有限公司 | Fingerprint comparison method and device |
| CN111725185A (en) * | 2019-03-04 | 2020-09-29 | 苏州多感科技有限公司 | Image sensor, manufacturing method thereof, image recognition method and electronic equipment |
| CN111709272B (en) * | 2020-04-26 | 2023-05-16 | 中国科学院信息工程研究所 | Fingerprint acquisition method, identity authentication method and electronic device based on small-area fingerprint |
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| CN203909812U (en) * | 2014-05-28 | 2014-10-29 | 上海思立微电子科技有限公司 | Fingerprint sensor array |
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| CN1464737A (en) * | 2002-06-27 | 2003-12-31 | 力捷电脑股份有限公司 | Image sensor having multiple pixel size |
| CN101097598A (en) * | 2007-03-23 | 2008-01-02 | 北京紫光捷通科技有限公司 | Device for building and inputting finger print image by voltage-sensitive sensor |
| CN103681721A (en) * | 2013-12-30 | 2014-03-26 | 上海集成电路研发中心有限公司 | Image sensor pixel array having high dynamic range |
| CN203909812U (en) * | 2014-05-28 | 2014-10-29 | 上海思立微电子科技有限公司 | Fingerprint sensor array |
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