CN104021374A - Fingerprint sensor array - Google Patents
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- CN104021374A CN104021374A CN201410231153.7A CN201410231153A CN104021374A CN 104021374 A CN104021374 A CN 104021374A CN 201410231153 A CN201410231153 A CN 201410231153A CN 104021374 A CN104021374 A CN 104021374A
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Abstract
The invention relates to a sensor and discloses a fingerprint sensor array. The fingerprint sensor array comprises N kinds of pixel units, and N is a natural number larger than 1; the number of each kind of pixel units is larger than or equal to 1; all pixel units are arranged to form an array; each pixel unit is internally provided with at least one sensor; types of sensors inside the same pixel unit kind are the same; and sensors arranged inside at least two pixel unit kinds are senses different in types or sizes. The fingerprint sensor array comprises sensors with larger areas and sensors with smaller areas, sensitivity of the fingerprint sensor is high, and resolution of acquired fingerprint image is high.
Description
Technical field
The present invention relates to sensor, particularly fingerprint sensor.
Background technology
Fingerprint identification technology is a kind of new and high technology that latest developments are got up.Fingerprint recognition is to utilize uniqueness and the unchangeability physiological characteristic of human body, one " I.D. of living " or an a kind of technology that the special seal of carrying carries out identification using fingerprint as human body.
Fingerprint recognition realizes by fingerprint sensor.Fingerprint sensor is built-in with fingerprint sensor array, for gathering finger print information.And, the pixel cell that fingerprint sensor array comprises periodic arrangement, as shown in Figure 1.In Fig. 1,101 is pixel cell, and the area of pixel cell is larger, and size is all identical.Wherein, the size of pixel cell has determined the resolution of the sensitivity of sensor and the fingerprint image of collection.
At present, because the area of pixel cell in sensor array is larger, be 50 μ m × 50 μ m, so the sensitivity of fingerprint sensor is higher, finger need not too closely just can detect finger print information apart from fingerprint sensor.But, because the area of pixel cell is larger, cause the fingerprint image resolution gathering to decline, not fogging clear.
Summary of the invention
The object of the present invention is to provide a kind of fingerprint sensor array, make the sensitivity of fingerprint sensor higher, the resolution of the fingerprint image simultaneously gathering is higher, and image is more clear accurately.
For solving the problems of the technologies described above, the invention provides a kind of fingerprint sensor array, comprise N kind pixel cell, wherein, N is greater than 1 natural number; The number of every kind of pixel cell is all greater than or equal to 1;
Described pixel cell is arranged and is formed array;
Wherein, built-in at least one sensor of pixel cell described in each; Sensor type described in same in pixel cell is identical; Having two kinds of built-in sensors of described pixel cell at least is the sensor of dissimilar or different size; The area of the described sensor of dissimilar or different size is all not identical.
Embodiment of the present invention in terms of existing technologies, comprise at least one pixel cell, and built-in at least one sensor of each pixel cell, wherein, sensor type in each pixel cell is identical, and the area of the sensor of dissimilar or different size is all not identical, is intended to the advantage of the sensor that sensor that bonded area is larger and area are less, with in ensureing that fingerprint transducer sensitivity is higher, improve the resolution of the fingerprint image gathering.Specifically, the fingerprint sensor array in the present invention, comprises N kind pixel cell, and wherein, N is greater than 1 natural number, that is to say, comprises at least one pixel cell; The number of every kind of pixel cell is all greater than or equal to 1, all pixel cells are arranged and are formed array, wherein, built-in at least one sensor of each pixel cell, sensor type in same pixel cell is identical, and having two kinds of built-in sensors of pixel cell at least is the sensor of dissimilar or different size, and importantly, the area of various sensors is all not identical.Like this, fingerprint sensor array not only comprises the sensor that area is larger, makes the sensitivity of fingerprint sensor higher; Also comprise the sensor that area is less, the fingerprint image resolution that fingerprint sensor is gathered is higher.So, the invention enables the sensitivity of fingerprint sensor higher, the resolution of the fingerprint image simultaneously gathering is higher, and image is more clear accurately.
In addition, N equals 2;
Described N kind pixel cell is the first pixel cell and the second pixel cell.
And described the first pixel cell is arranged in described the second pixel cell around, forms three-back-shaped array;
Wherein, in described the first pixel cell, comprise 1 first sensor, in described the second pixel cell, comprise at least 1 the second sensor; The area of described first sensor is at least greater than the area of described second sensor of 2 times.
This is to design according to close outer thin feature in the region fingerprint lines for gathering fingerprint image.Because the core of fingerprint lines gathering is than comparatively dense, the second less area sensor is placed in to the centre of fingerprint sensor array, make the resolution of the fingerprint image gathering higher, image is more clear accurately.Simultaneously, because the shape of finger is cambered surface, finger peripheral part can be larger than core apart from the distance of fingerprint sensor, first sensor larger area is placed in to the peripheral position of fingerprint sensor array, be placed in the second sensor around, make the fingerprint image that ensures to gather clearly under prerequisite the sensitivity of fingerprint sensor higher.Like this, the second sensor that the first sensor that bonded area is larger and area are less, makes the sensitivity of fingerprint sensor higher, and the resolution of the fingerprint image simultaneously gathering is higher, and image is more clear accurately.
In addition, described N kind pixel cell is periodically alternative arrangement.
Like this, N kind pixel cell is alternative arrangement periodically, that is to say, the sensor that the sensor that area is larger and area are less is also periodically alternative arrangement, that is periodically alternately, and be evenly distributed.The sensor that area is larger makes the sensitivity of fingerprint sensor higher, more responsive to fingerprint; The fingerprint image resolution that the sensor that area is less gathers fingerprint sensor is higher, and image is more clear accurately.N kind pixel cell periodically makes the sensitivity of fingerprint sensor higher alternately, and the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
In addition, pixel cell repeated arrangement described in same on an axial direction; On another axial direction, be periodically alternative arrangement by least two kinds of described pixel cells.
This is the another kind of mode of the sensor arrangement that sensor that area is larger and area are less, makes the sensitivity of fingerprint sensor higher, and the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
Brief description of the drawings
Fig. 1 is the schematic diagram of fingerprint sensor array of the prior art;
Fig. 2 is according to the schematic diagram of the fingerprint sensor array of second embodiment of the invention;
Fig. 3 is according to the schematic diagram of the fingerprint sensor array of third embodiment of the invention;
Fig. 4 is according to the schematic diagram of the fingerprint sensor array of four embodiment of the invention;
Fig. 5 is according to the schematic diagram of the fingerprint sensor array of fifth embodiment of the invention;
Fig. 6 is according to the schematic diagram of the fingerprint sensor array of sixth embodiment of the invention;
Fig. 7 is according to the schematic diagram of the fingerprint sensor array of seventh embodiment of the invention;
Fig. 8 is according to the schematic diagram of the fingerprint sensor array of eighth embodiment of the invention;
Fig. 9 is according to the schematic diagram of the fingerprint sensor array of ninth embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in the each embodiment of the present invention, in order to make reader understand the application better, many ins and outs are proposed.But, even without these ins and outs and the many variations based on following embodiment and amendment, also can realize the each claim of the application technical scheme required for protection.
The first embodiment of the present invention relates to a kind of fingerprint sensor array, comprises N kind pixel cell, and wherein, N is greater than 1 natural number.That is to say, fingerprint sensor array comprises at least one pixel cell.And the number of every kind of pixel cell is all greater than or equal to 1.
All pixel cells are arranged and are formed array, wherein, built-in at least one sensor of each pixel cell, sensor type in same pixel cell is identical, and to have two kinds of built-in sensors of pixel cell at least be the sensor of dissimilar or different size, importantly, the area of the sensor of dissimilar or different size is all not identical, that is to say, in fingerprint sensor array, both comprised the sensor that area is larger, also comprise the sensor that area is less.
Meanwhile, between adjacent sensor, pass through information interaction, and restore fingerprint image according to the continuity of fingerprint.
In terms of existing technologies, the fingerprint sensor array in the present invention comprises at least one pixel cell, and the number of every kind of pixel cell is all greater than or equal to 1; All pixel cells are arranged and are formed array; Wherein, built-in at least one sensor of each pixel cell, the sensor type in same pixel cell is identical, and importantly, the area of the sensor of dissimilar or different size is all not identical; That is to say, fingerprint sensor array had both comprised the sensor that area is larger, also comprised the sensor that face is less, was intended to the advantage of the sensor that sensor that bonded area is larger and area are less.Due to the larger sensor of area, make the sensitivity of fingerprint sensor higher; The sensor that area is less, the fingerprint image resolution that fingerprint sensor is gathered is higher.So, the invention enables the sensitivity of fingerprint sensor higher, the resolution of the fingerprint image simultaneously gathering is higher, and image is more clear accurately.
The second embodiment of the present invention relates to a kind of fingerprint sensor array.The second embodiment has been done further refinement on the basis of the first embodiment, has provided the concrete structure of fingerprint sensor array.
In the present embodiment, it is the first pixel cell and the second pixel cell that N equals 2, N kind pixel cell, wherein, comprises 1 first sensor in the first pixel cell, comprises at least 1 the second sensor in the second pixel cell.The concrete structure of fingerprint sensor array as shown in Figure 2.
In Fig. 2,201 is the first pixel cell, refers to together first sensor, and 202 is the second pixel cell, and 2021 is the second sensor.The first pixel cell is arranged in the second pixel cell around, forms three-back-shaped array; The second sensor forms array by default periodic arrangement; The area of first sensor is at least more than or equal to the area of second sensor of 2 times.
In the present embodiment, Back Word type is equivalent to a rectangle and a combination pattern that rectangular centre overlaps, long limit is parallel to each other that area is larger that area is less, and the region between two rectangles is above-mentioned Back Word type.Multiple the first pixel cells form array in Back Word type area arrangement; Region in the less rectangle of area is the second pixel cell.Wherein, comprise 1 first sensor in the first pixel cell, all first sensors form array by default periodic arrangement; In the second pixel cell, comprise multiple the second sensors, all the second sensors also form array by default periodic arrangement; The area of first sensor is greater than the area of the second sensor.
That is to say, the area of built-in the second sensor of the second pixel cell is less than the area of the built-in first sensor of the first pixel cell, and second pixel cell be positioned at the centre of array that the first pixel cell forms, in fingerprint sensor array, the second sensor that area is little is positioned at centre, and the first sensor that area is larger is distributed in the second sensor around.
Meanwhile, between adjacent sensor, pass through information interaction, and restore fingerprint image according to the continuity of fingerprint.
This is to design according to close outer thin feature in the region fingerprint lines for gathering fingerprint image.Because the core of fingerprint lines gathering is than comparatively dense, the second less area sensor is placed in to the centre of fingerprint sensor array, make the resolution of the fingerprint image gathering higher, image is more clear accurately.Simultaneously, because the periphery of the fingerprint lines gathering is more sparse, the peripheral position that first sensor larger area is placed in to fingerprint sensor array, is placed in the second sensor around, make the fingerprint image that ensures to gather clearly under prerequisite the sensitivity of fingerprint sensor higher.Like this, the second sensor that the first sensor that bonded area is larger and area are less, makes the sensitivity of fingerprint sensor higher, and the resolution of the fingerprint image simultaneously gathering is higher, and image is more clear accurately.
The 3rd embodiment of the present invention relates to a kind of fingerprint sensor array.The 3rd embodiment has been done further refinement on the basis of the first embodiment, has provided the concrete structure of fingerprint sensor array.
In the present embodiment, N kind pixel cell is periodically alternative arrangement.Preferably, it is the first pixel cell and the second pixel cell that N equals 2, N kind pixel cell, wherein, comprises 1 the 3rd sensor in the first pixel cell, comprises at least 1 four-sensor in the second pixel cell.The concrete structure of fingerprint sensor array as shown in Figure 3.
In Fig. 3,301 is the first pixel cell, refers to together the 3rd sensor, and 302 is the second pixel cell, and 3021 is four-sensor.The first pixel cell and the second pixel cell are periodically alternative arrangement, form array.Wherein, the first pixel cell and the second pixel cell are rectangle, and the length of rectangle is A, the wide B that is, and A and B are natural number, can set as required; Built-in 1 the 3rd sensor of the first pixel cell, the 3rd sensor is rectangle, and long is A, and wide is B, identical with shape, the size of the first pixel cell; The built-in L of the second pixel cell four-sensor, what L was greater than 1, the four-sensor be rectangle, and long is C, and wide be D, and C and D are natural number, and C is less than or equal to A, and D is less than or equal to B, the individual four-sensor periodic arrangement of this L, formation array.
In the present embodiment, L equals 4, and A equals B.That is to say, the first pixel cell and the second pixel cell are square.Meanwhile, built-in 4 four-sensors of the second pixel cell, and arrange the square formation that forms 2 × 2.
Meanwhile, between neighboring sensors, pass through information interaction, and restore fingerprint image according to the continuity of fingerprint.
Like this, the first pixel cell and the second pixel cell are square.Wherein, built-in 1 the 3rd sensor of the first pixel cell, the 3rd sensor is also square; 4 built-in four-sensors of the second pixel cell are arranged the square formation that forms 2 × 2.The first pixel cell and the second pixel cell be alternative arrangement periodically, that is to say, the four-sensor that the 3rd sensor that area is larger and area are less is also periodically alternative arrangement, and is evenly distributed.The 3rd sensor that area is larger makes the sensitivity of fingerprint sensor higher, more responsive to light, finger print information just can be detected in the time that finger is not too near apart from fingerprint sensor; The fingerprint image resolution that the four-sensor that area is less gathers fingerprint sensor is higher, and image is more clear accurately.The periodicity of the 3rd sensor and four-sensor makes the sensitivity of fingerprint sensor higher alternately, and the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
The 4th embodiment of the present invention relates to a kind of fingerprint sensor array.The 4th embodiment and the 3rd embodiment are roughly the same, and the key distinction is: in the 3rd embodiment, the first pixel cell and the second pixel cell are square, and the second pixel cell comprises 4 four-sensors; And in the 4th embodiment, the first pixel cell and the second pixel cell are rectangle, the second pixel cell comprises 2 four-sensors, specifically as shown in Figure 4.
In Fig. 4,301 is the first pixel cell, and 302 is the second pixel cell, and 3021 is four-sensor.
In the present embodiment, L equals 2, C, D is equal to B, and the A B that is greater than 2 times.That is to say, the first pixel cell and the second pixel cell are rectangle, and are periodically alternative arrangement.Wherein, the first pixel cell comprises 1 the 3rd sensor, and shape, the size of the 3rd sensor are identical with the first pixel cell; The second pixel cell comprises 2 four-sensors, and four-sensor is square, arrange the array that forms 1 × 2, and the area of the 3rd sensor is greater than the area of the four-sensor of 2 times.
Like this, because the area of the 3rd sensor is larger, make the sensitivity of fingerprint sensor higher, meanwhile, the area of four-sensor is less, makes the fingerprint image resolution of collection higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
The 5th embodiment of the present invention relates to a kind of fingerprint sensor array.The 5th embodiment and the 3rd embodiment are roughly the same, and the key distinction is: in the 3rd embodiment, the first pixel cell and the second pixel cell are periodically alternative arrangement, and are evenly distributed, and arrange non-directional; In the 5th embodiment, same pixel cell repeated arrangement on an axial direction, on another axial direction, the first pixel cell and the second pixel cell are periodically alternative arrangement, arrange and have directivity.
In the present embodiment, same pixel cell repeated arrangement on an axial direction is periodically alternative arrangement by least two kinds of pixel cells on another axial direction.Preferably, to equal 2, N kind pixel cell be the first pixel cell and the second pixel cell to N.
Specifically, the first pixel cell and the second pixel cell are periodically alternative arrangement, same pixel cell repeated arrangement in Y direction in X-direction; Wherein, X-direction is along the direction on a limit of the first pixel cell, and Y direction is perpendicular to X-direction, specifically as shown in Figure 5.
Like this, the first pixel cell and the second pixel cell cycle property in X-direction is alternately arranged, same pixel cell repeated arrangement in Y direction, it is the another kind of mode of the sensor arrangement that sensor that area is larger and area are less, make the sensitivity of fingerprint sensor higher, the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
The 6th embodiment of the present invention relates to a kind of fingerprint sensor array.The 6th embodiment and the 3rd embodiment are roughly the same, the key distinction is: in the 3rd embodiment, the first pixel cell and the second pixel cell are periodically alternative arrangement, and be evenly distributed, reached the balance between the sensitivity of fingerprint sensor array and the fingerprint image resolution of collection; In the 6th embodiment, the first pixel cell and the second pixel cell are arranged and are formed array, the repeated arrangement of at least one behavior the first pixel cell in array, specifically as shown in Figure 6.In the present embodiment, the first pixel cell proportion is larger, mainly makes the sensitivity of fingerprint sensor array higher, meanwhile, slightly improves the resolution of the fingerprint image gathering.
In the present embodiment, the repeated arrangement of at least one behavior same pixel cell in array.Preferably, to equal 2, N kind pixel cell be the first pixel cell and the second pixel cell to N.In array, the periodicity alternative arrangement of repeated arrangement, the first pixel cell and second pixel cell of the first pixel cell is alternate, wherein, the first pixel cell comprises the sensor that area is larger, the second pixel cell comprises the sensor that area is less, because the first pixel cell proportion is larger, mainly makes the sensitivity of fingerprint sensor higher, meanwhile, slightly improved again the resolution of the fingerprint image gathering.Present embodiment has ensured the dirigibility of embodiment of the present invention, the fingerprint sensor that is applicable to sensitivity to have relatively high expectations.
The 7th embodiment of the present invention relates to a kind of fingerprint sensor array.The 7th embodiment has been done further refinement on the basis of the first embodiment, has provided the concrete structure of fingerprint sensor array.
In the present embodiment, it is the first pixel cell and the second pixel cell that N equals 2, N kind pixel cell, and the area of the first pixel cell is greater than the area of second pixel cell of 2 times.The concrete structure of fingerprint sensor array as shown in Figure 7.
In Fig. 7,301 is the first pixel cell, and 302 is the second pixel cell.The first pixel cell and the second pixel cell are rectangle, and the first pixel cell and the second pixel cell are periodically alternative arrangement.Wherein, the first pixel cell is long is E, and wide is F, and E, F are natural number; The second pixel cell is long is G, and wide is F, and G is natural number, and E is greater than the G of twice.Built-in 1 the 5th sensor of the first pixel cell, the 5th sensor is rectangle, and long is E, and wide is F; Built-in 1 the 6th sensor of the second pixel cell, the 6th sensor is rectangle, and long is G, and wide is F.
That is to say, the long limit of the first pixel cell is greater than 2 times of long limit of the second pixel cell, and minor face is identical.In the first pixel cell, only comprise 1 the 5th sensor, shape, the size of the 5th sensor are identical with the first pixel cell respectively; In the second pixel cell, only comprise 1 the 6th sensor, shape, the size of the 6th sensor are identical with the second pixel cell respectively.
Like this, the first pixel cell and the second pixel cell are rectangle, and minor face equates, because the long limit of the first pixel cell is greater than 2 times of long limit of the second pixel cell, so the area of the first pixel cell is greater than the area of second pixel cell of 2 times.The first pixel cell and the second pixel cell are periodically alternative arrangement, that is to say, the first pixel cell and the second pixel cell are staggered, and in like manner, the 5th sensor and the 6th sensor are also like this.Present embodiment is the another kind of mode of the sensor arrangement that sensor that area is larger and area are less, same, makes the sensitivity of fingerprint sensor higher, and the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
The 8th embodiment of the present invention relates to a kind of fingerprint sensor array.The 8th embodiment has been done further refinement on the basis of the first embodiment, has provided the concrete structure of fingerprint sensor array.
In the present embodiment, N equals 3.N kind pixel cell is the 7th pixel cell, the 8th pixel cell and the 9th pixel cell, specifically as shown in Figure 8.Wherein, 801 is the 7th pixel cell, and 802 is the 8th pixel cell, and 803 is the 9th pixel cell.N kind pixel cell is periodically alternative arrangement.That is to say, 3 kinds of pixel cells cycle property on an axial direction is alternately arranged, and is also periodicity alternative arrangement in another direction.
As shown in Figure 8, the 7th pixel cell, the 8th pixel cell and the 9th pixel cell are rectangle, and three's width is identical, is H, length is all different, is respectively I, J, K, and wherein, H, I, J, K are natural number, and I is greater than J, J is greater than K, and I is at least greater than the K of 2 times.The 7th built-in 1 of pixel cell the 7th sensor, size, the shape of the 7th sensor are identical with the 7th pixel cell respectively; The 8th built-in 1 of pixel cell the 8th sensor, size, the shape of the 8th sensor are identical with the 8th pixel cell respectively; The 9th built-in 1 of pixel cell the 9th sensor, size, the shape of the 9th sensor are identical with the 9th pixel cell respectively.
Because the 7th sensor, the 8th sensor are identical with the 9th sensor width, length is all not identical, so various types of sensor areas are all not identical, wherein, the area maximum of the 7th sensor, the area minimum of the 9th sensor, and the 7th sensor of area maximum is at least 2 times of the 9th sensor of area minimum.Because if the area difference of various types of sensors is little, the resolution of the sensitivity of fingerprint sensor and the fingerprint image of collection all can not be greatly improved so.
Present embodiment is the another kind of mode of the sensor arrangement that sensor that area is larger and area are less, same, makes the sensitivity of fingerprint sensor higher, and the fingerprint image resolution simultaneously gathering is higher, and image is more clear accurately.Present embodiment has ensured the dirigibility of embodiment of the present invention.
The 9th embodiment of the present invention relates to a kind of fingerprint sensor array.The 9th embodiment has been done further refinement on the basis of the first embodiment, has provided the concrete structure of fingerprint sensor array.
In the present embodiment, N kind pixel cell be the tenth pixel cell, the 11 pixel cell ..., (N+9) pixel cell, specifically as shown in Figure 9.Wherein, 901 is (N+9) pixel cell, and 902 is (N+8) pixel cell, and 903 is (N+7) pixel cell, and 904 is the tenth pixel cell, and 905 is the axis of symmetry of fingerprint sensor array.Wherein, the area of N kind pixel cell increases successively according to order, and arranges symmetrically about the axis of symmetry of fingerprint sensor array.
In the present embodiment, the tenth built-in 1 of pixel cell the tenth sensor, size, the shape of the tenth sensor are identical with the tenth pixel cell respectively; Built-in 1 the 11 sensor of the 11 pixel cell, size, the shape of the 11 sensor are identical with the 11 pixel cell respectively; Built-in 1 (N+9) sensor of (N+9) pixel cell, size, the shape of (N+9) sensor are identical with (N+9) pixel cell respectively.That is to say, the area of sensor also increases successively according to order.
As shown in Figure 9, the area of various pixel cells increases successively in the direction away from fingerprint sensor array axis of symmetry.This is also to design according to the thin feature in close periphery in the middle of fingerprint lines to a certain extent.Because the center section of fingerprint lines gathering is than comparatively dense, sensor less area is placed in to the middle part of fingerprint sensor array, make the resolution of the fingerprint image gathering higher, image is more clear accurately.Simultaneously, because the periphery of the fingerprint lines gathering is more sparse, sensor larger area is placed in to the peripheral position of fingerprint sensor array, and the area of sensor is along increasing successively away from the direction of fingerprint sensor array axis of symmetry, make fingerprint sensor the fingerprint image that ensures to gather clearly under prerequisite sensitivity be improved gradually, and avoid the change resolution of the fingerprint image gathering lofty, fingerprint image regionality is unintelligible.
Present embodiment is the another kind of mode of the sensor arrangement that sensor that area is larger and area are less, make fingerprint sensor the fingerprint image that ensures to gather clearly under prerequisite sensitivity be improved gradually, and avoid the change resolution of the fingerprint image gathering lofty, fingerprint image regionality is unintelligible.Present embodiment has ensured the dirigibility of embodiment of the present invention.
It should be noted that, key of the present invention is to comprise in fingerprint sensor array sensor that area is larger and the less sensor of area simultaneously, and when making the sensitivity of fingerprint sensor higher, the image resolution ratio of collection is also higher, and clear picture is accurate.In the respective embodiments described above, only having enumerated pixel cell is that rectangle, sensor are only the situation of rectangle, and in actual applications, any conversion that above-mentioned figure is made, such as triangle, hexagon, all within protection scope of the present invention.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiments of the invention, and in actual applications, can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. a fingerprint sensor array, is characterized in that, comprises N kind pixel cell, and wherein, N is greater than 1 natural number; The number of every kind of pixel cell is all greater than or equal to 1;
Described pixel cell is arranged and is formed array;
Wherein, built-in at least one sensor of pixel cell described in each; Sensor type described in same in pixel cell is identical; Having two kinds of built-in sensors of described pixel cell at least is the sensor of dissimilar or different size; The area of the described sensor of dissimilar or different size is all not identical.
2. fingerprint sensor array according to claim 1, is characterized in that, N equals 2;
Described N kind pixel cell is the first pixel cell and the second pixel cell.
3. fingerprint sensor array according to claim 2, is characterized in that, described the first pixel cell is arranged in described the second pixel cell around, forms three-back-shaped array;
Wherein, in described the first pixel cell, comprise 1 first sensor, in described the second pixel cell, comprise at least 1 the second sensor; The area of described first sensor is at least more than or equal to the area of described second sensor of 2 times.
4. fingerprint sensor array according to claim 1, is characterized in that, described N kind pixel cell is periodically alternative arrangement.
5. fingerprint sensor array according to claim 1, is characterized in that, the repeated arrangement of same pixel cell described at least one behavior in described array.
6. fingerprint sensor array according to claim 1, is characterized in that, pixel cell repeated arrangement described in same on an axial direction;
On another axial direction, be periodically alternative arrangement by least two kinds of described pixel cells.
7. fingerprint sensor array according to claim 1, is characterized in that, described N kind pixel cell is arranged symmetrically about the axis of symmetry of described fingerprint sensor array.
8. fingerprint sensor array according to claim 1, is characterized in that, the area of the described sensor of area maximum is at least 2 times of described sensor of area minimum.
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| CN105488451A (en) * | 2014-09-26 | 2016-04-13 | 上海思立微电子科技有限公司 | Fingerprint recognition sensor |
| CN106599822A (en) * | 2016-12-08 | 2017-04-26 | 江苏邦融微电子有限公司 | Variable resolution fingerprint acquisition unit array and acquisition method thereof |
| CN106845340A (en) * | 2016-12-13 | 2017-06-13 | 华勤通讯技术有限公司 | User equipment, fingerprint recognition array and its control method |
| 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 |
| CN107924464A (en) * | 2015-06-26 | 2018-04-17 | 辛纳普蒂克斯公司 | Multiresolution fingerprint sensor |
| WO2018145379A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Display module |
| WO2018145378A1 (en) * | 2017-02-09 | 2018-08-16 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN109598182A (en) * | 2017-09-30 | 2019-04-09 | 比亚迪股份有限公司 | Fingerprint comparison method and apparatus |
| WO2020177412A1 (en) * | 2019-03-04 | 2020-09-10 | 苏州多感科技有限公司 | Image sensor, preparation method thereof, image recognition method, and electronic apparatus |
| CN111709272A (en) * | 2020-04-26 | 2020-09-25 | 中国科学院信息工程研究所 | Fingerprint acquisition method based on small-area fingerprint, identity authentication method and electronic device |
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Effective date of registration: 20191206 Address after: 230601 No. 368 Tsinghua Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Hefei Jixin Electronic Technology Co., Ltd Address before: 201210, Pudong New Area Zhangjiang hi tech park, No. 2, 560, 10, 1003, midsummer Road, Shanghai Patentee before: Shanghai Si Li microelectronics Science and Technology Ltd. |