WO2017031634A1 - 终端设备 - Google Patents
终端设备 Download PDFInfo
- Publication number
- WO2017031634A1 WO2017031634A1 PCT/CN2015/087806 CN2015087806W WO2017031634A1 WO 2017031634 A1 WO2017031634 A1 WO 2017031634A1 CN 2015087806 W CN2015087806 W CN 2015087806W WO 2017031634 A1 WO2017031634 A1 WO 2017031634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fingerprint recognition
- recognition module
- cover plate
- terminal device
- fingerprint
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 31
- 230000035945 sensitivity Effects 0.000 description 16
- 239000012790 adhesive layer Substances 0.000 description 13
- 210000003811 finger Anatomy 0.000 description 8
- 239000006059 cover glass Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 210000003813 thumb Anatomy 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
Definitions
- the invention relates to a terminal device, in particular to a terminal device capable of fingerprint recognition.
- a terminal device usually has a fingerprint recognition function.
- Such a mobile phone with fingerprint recognition function has appeared on the market: a through hole is formed in the cover of the mobile phone, a physical button is set in the through hole, and the fingerprint identification module is combined with the physical button, so that the user can press the physical button At the same time, fingerprint identification is performed by the fingerprint recognition module, so that the control unit performs authentication processing.
- the through hole is not formed in the cover plate, and the influence of the gap between the through hole and the physical button on the fingerprint recognition module cannot be avoided at all, thereby affecting the reliability of the fingerprint recognition.
- the embodiment of the invention provides a terminal device capable of recognizing a fingerprint to ensure the reliability of fingerprint recognition.
- an embodiment of the present invention provides a terminal device, including a cover, a fingerprint identification module, and a control unit;
- the cover plate is located at one side of the terminal device
- the fingerprint identification module is disposed under the cover plate and electrically connected to the control unit, and is configured to identify a fingerprint implemented on a cover plate corresponding to the fingerprint recognition module;
- the control unit is configured to perform an authentication process according to the fingerprint identified by the fingerprint identification module
- the cover plate is made of a material whose dielectric constant is a first preset value, and the panel corresponds to a portion of the fingerprint recognition module, and the thickness thereof is a preset value.
- the terminal device further includes a display panel; the display panel is disposed under the first area of the cover, and correspondingly, the fingerprint recognition module is disposed at a set position under the second region of the cover.
- a part of the cover corresponding to the fingerprint identification module is provided with a blind hole, and the blind hole is Opening the opening away from the fingerprint Do not side of the module.
- the cover portion corresponds to a portion of the fingerprint identification module, and the thickness thereof is different from the cover The difference in thickness of the portion is less than a preset value.
- the cover is a transparent glass material.
- the cover and the fingerprint recognition module include a prompting identifier layer.
- the cover layer and the fingerprint recognition module include an ink layer having a dielectric constant of a second preset value.
- the ink layer further includes an ink layer having a dielectric constant of a second preset value, where the ink layer is located in the prompting identifier layer and Between fingerprint identification modules.
- the fingerprint identification module passes the adhesive sticker with a dielectric constant of a third preset value. Engaged in the set position under the cover.
- the terminal device further includes a printed circuit board, and the fingerprint identification module passes The printed circuit board is electrically connected to the control unit.
- the terminal device further includes a display panel; the cover plate is located on the opposite side of the display panel.
- the fingerprint recognition module is disposed under the cover plate, and the hole is not required to be punched in the cover plate, so that the influence of the liquid, the dust and the like on the fingerprint recognition module can be avoided, and the reliability of the fingerprint recognition is ensured.
- FIG. 1 is a front elevational view of a terminal device in the first embodiment
- Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
- Figure 3 is a front elevational view of the terminal device in the second embodiment
- Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
- Fig. 5 is a cross-sectional view showing the terminal device in the third embodiment.
- Embodiments of the present invention relate to a terminal device that can be fingerprint-recognized.
- the terminal device may include, but is not limited to, a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the like.
- FIG. 1 is a front elevational view of a terminal device according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line A-A of FIG.
- FIG. 1 uses a mobile phone as an example of a terminal device for description, it does not constitute a limitation thereto.
- the mobile phone 100 includes a cover 101, a fingerprint recognition module 102 under the cover 101, a printed wiring board 103, and a control unit 104.
- the cover 101 is typically disposed on the front of the handset 100 and can be used to protect the display panel as well as other components of the handset.
- the cover 101 can be divided into a region 1011 and a region 1012.
- a display panel can be disposed under the region 1011, and the fingerprint recognition module 102 is disposed at a certain position under the region 1012.
- the cover plate may be made of a material such as glass, sapphire, resin or the like.
- the fingerprint recognition module 102 is disposed under the cover 101 for identifying a finger fingerprint applied by the user to the cover 101 of the corresponding fingerprint recognition module 102.
- the fingerprint recognition module 102 is disposed under the center of the substantially bottom side of the area 1012 of the cover 101, so that the fingerprint of the thumb that is convenient for the user to apply to the cover is recognized by the corresponding fingerprint recognition module when the user is in the hand. .
- the fingerprint recognition module is disposed under the center of the substantially bottom side of the area 1012 of the cover 101, so that the fingerprint of the thumb that is convenient for the user to apply to the cover is recognized by the corresponding fingerprint recognition module when the user is in the hand.
- the fingerprint recognition module is disposed under the center of the substantially bottom side of the area 1012 of the cover 101, so that the fingerprint of the thumb that is convenient for the user to apply to the cover is recognized by the corresponding fingerprint recognition module when the user is in the hand.
- most users are accustomed to using the fingerprint of the thumb for identification and authentication, this is not Other fingers that exclude
- the fingerprint identification module 102 in the embodiment of the present invention includes at least a capacitive fingerprint sensor. Specifically, the difference from the existing capacitive fingerprint sensor is that the fingerprint sensor chip included in the capacitive fingerprint sensor is attached to the set position under the cover plate 101 without being plastically sealed. Optionally, it can be adhered to the above set position under the cover plate 101 by an adhesive. After the fingerprint recognition and recognition module 102 recognizes the fingerprint of the user, the fingerprint image is collected, and the captured fingerprint image is image processed, for example, binarized, extracted feature points, etc., and then converted into fingerprint data, and sent to the control unit. 103. Preferably, the fingerprint identification module 102 further includes a reinforcing plate for structurally reinforcing the fingerprint sensor, and details are not described herein.
- the control unit 103 is configured to perform an authentication process according to the fingerprint data identified by the fingerprint identification module. Generally, the control unit 103 compares the received fingerprint data with the fingerprint data already stored by the mobile phone, so as to perform corresponding processing according to the comparison result.
- the control unit 104 can be a microprocessor, a baseband chip, or the like.
- fingerprint identification module 102 is electrically coupled to printed circuit board 104.
- the fingerprint sensor can be electrically connected to the printed circuit board 104 by an FPC (Flexible Printed Circuit).
- FPC Flexible Printed Circuit
- one end of the FPC is connected to the fingerprint sensor, and the other end is electrically connected to the printed circuit board 104 through an RDL (redistribution layer) and a solder ball extraction lead electrode.
- the control unit 103 is located on the printed circuit board 104 such that the fingerprint identification module 102 can be electrically coupled to the control unit 103 via the printed circuit board 104.
- the fingerprint identification module 102 can also be electrically connected to the control unit 103 without using a printed circuit board, which is not limited by the present invention.
- the cover plate 101 in the embodiment of the present invention may have the same thickness H 1 , that is, the thickness of the portion of the cover plate 101 corresponding to the fingerprint recognition module 102 and the thickness of other portions of the cover plate 101 may both be H 1 .
- the difference between the two can be less than a preset value.
- the dielectric constant of the cover 101 is ⁇ 1 .
- the finger and the capacitive sensor correspond to two capacitive plates, and the cover between the finger and the surface of the capacitive sensor corresponds to the medium between the capacitive plates.
- the capacitive sensor captures the fingerprint image by using the capacitance difference between the ridges and valleys of the fingerprint line of the hand to form an 8-bit grayscale image.
- the capacitance C ( ⁇ * S) / d.
- ⁇ is the dielectric constant of the dielectric between the plates
- s is the relative coverage area of the capacitor plates
- d is the distance between the plates.
- ⁇ may be the dielectric constant ⁇ 1
- S of the cover plate 101 may be the surface area s of the sensor 1021
- d may be the thickness H 1 of the cover plate 101.
- the capacitance value ⁇ 1 of the cover plate and the thickness H 1 of the cover plate are affected. That is to say, as long as the dielectric constant ⁇ 1 of the cover plate and the thickness H 1 of the cover plate satisfy the preset value, the capacitance value can be made to a certain size, and the fingerprint can be reliably recognized.
- the fingerprint recognition module is disposed under the cover plate, and there is no need to punch a hole in the cover plate, so that the influence of the liquid, the dust and the like on the fingerprint recognition module can be avoided, and the reliability of the fingerprint recognition is ensured. It can improve the appearance of the whole machine and improve the structural strength of the cover.
- the second embodiment is a further optimization based on the first embodiment.
- the same or similar content is not described in detail in the embodiment. Please refer to the description of the first embodiment.
- the cover 101 has a blind hole 1013 at a position corresponding to the fingerprint recognition module 102.
- the opening of the blind hole 1013 faces the side facing away from the fingerprint recognition module.
- the blind hole 1013 is located in the middle of the bottom edge of the area 1012, and the fingerprint identification module 102 is located below the blind hole 1013, so that the thumb can be conveniently located in the blind hole 1013 when the user is in the hand, thereby allowing the fingerprint under the blind hole.
- the recognition module 102 identifies the fingerprint. Although most users are accustomed to using the fingerprint of the thumb for identification authentication, this does not exclude the user's other fingers to identify the authentication. Of course, those skilled in the art can also set the blind identification hole and the fingerprint recognition module under the blind hole to other positions as needed.
- the blind hole can be obtained by a localized thinning to a set thickness by a process such as etching, CNC (computer numerical control) processing, or laser ablation.
- a process such as etching, CNC (computer numerical control) processing, or laser ablation.
- the blind hole 1013 is provided with good recognition, and the user can easily know the location where fingerprint recognition can be performed. More importantly, since the blind hole thins the thickness of the portion of the cover corresponding to the fingerprint recognition module, the sensitivity of fingerprint recognition can be ensured, and the overall thickness of other portions of the cover 101 is not required.
- the capacitance is inversely proportional to the distance between the capacitor plates, and the smaller the distance, the larger the capacitance. This means that the sensitivity of the sensor is more sensitive. In the present embodiment, referring to FIG.
- the distance between the two capacitive plates of the finger and the sensor is mainly the distance h between the bottom of the blind hole 1013 and the sensor surface. It is obvious that the size of h is smaller than the overall thickness H 2 of the cover plate 101. , then the sensitivity of fingerprint recognition will be higher than in the case of blind holes.
- the blind hole is opened on the cover glass corresponding to the position of the fingerprint recognition module, which has better practical significance.
- the distance h of the bottom of the blind hole according to the sensor for example, 0.3 mm, becomes significantly smaller, and the obtained capacitance value becomes significantly larger. Then the sensitivity of the sensor is significantly improved, meeting the need for clear fingerprint recognition.
- the fingerprint recognition module is disposed under the cover plate, and the hole is not required to be punched in the cover plate, so that the influence of the liquid, the dust and the like on the fingerprint recognition module can be avoided, and the reliability of the fingerprint recognition is ensured. It can improve the appearance of the whole machine and improve the structural strength of the cover.
- a blind hole is provided in a portion of the cover corresponding to the fingerprint recognition module, which reduces the thickness of the portion, so that the distance between the user's finger and the fingerprint recognition module is significantly reduced, and the fingerprint can be improved.
- the sensitivity of the recognition in addition, the blind hole setting has a good degree of recognition, making it easy for the user to know where the fingerprint can be recognized.
- the third embodiment is further optimized on the basis of the first embodiment and the second embodiment.
- the same or similar content is not described in detail in the embodiment. Please refer to the descriptions of the first embodiment and the second embodiment.
- a cue mark layer 105, a high dielectric ink layer 106, and a high dielectric adhesive layer 107 are sequentially laminated between the cover 101 and the fingerprint recognition module 102.
- the prompt indicates that the layer 105 can have a specific color, or have a specific pattern, or both.
- the purpose is to better remind the user of the location of the fingerprint when the cover 101 is a transparent material, such as an existing cover glass.
- the prompt mark layer 105 may be applied between the cover plate 101 and the fingerprint recognition module 102 by using a NCVM (Non-Conductive Vacuum Metal sizing) process.
- NCVM Non-Conductive Vacuum Metal sizing
- the high dielectric ink layer 106 is an ink layer having a high dielectric constant, such as a dielectric constant of 5-7, for improving the sensitivity of fingerprint recognition. For the reason, the sensitivity of the sensor is positively related to the capacitance, as described above. The capacitance is proportional to the dielectric constant.
- a metal oxide such as titanium oxide or zirconium oxide may be added to the ordinary ink to increase the dielectric constant value. It should be noted that although the higher dielectric constant helps to improve the sensitivity of fingerprint recognition, if too much metal is added, metal shielding is easily formed, which adversely affects the sensitivity of fingerprint recognition.
- the high dielectric adhesive layer 107 is an adhesive layer having a high dielectric constant, such as a dielectric constant of 7-8.
- a high dielectric constant such as a dielectric constant of 7-8.
- a metal oxide such as titanium oxide or zirconium oxide may be added to the ordinary binder to increase the dielectric constant value. It should be noted that although the higher dielectric constant helps to improve the sensitivity of fingerprint recognition, if too much metal is added, metal shielding is easily formed, which adversely affects the sensitivity of fingerprint recognition.
- a screen printing ink layer 108 which is located below the area 1012 of the cover glass for decorative shielding to prevent light leakage. Because this is an existing setting, it will not be described here.
- the high dielectric adhesive layer 107 is sequentially laminated between the cover 101 and the fingerprint recognition module 102, but this is not limited thereto. The technician can select at least one of them as needed.
- the cover 101 and the fingerprint recognition module 102 include only the high dielectric adhesive layer 107, or the promptly labeled layer 105 and the high dielectric adhesive layer 107 are sequentially stacked (the prompting layer 105 is close to the cover). 101.
- the high dielectric adhesive layer 107 is adjacent to the fingerprint recognition module 102) or comprises a high dielectric ink layer 106 and a high dielectric adhesive layer 107 (the high dielectric ink layer 106 is adjacent to the cover 101).
- the high dielectric adhesive layer 107 is adjacent to the fingerprint recognition module 102) and the like.
- the embodiment of the present invention focuses on other components such as a prompting marking layer, a high dielectric ink layer, a high dielectric adhesive layer, etc., so that the corresponding cover portion of the fingerprint recognition module 102 in FIG. 5 includes the blind hole 1013 as an example.
- a prompting marking layer such as a high dielectric ink layer, a high dielectric adhesive layer, etc.
- the corresponding cover portion of the fingerprint recognition module 102 in FIG. 5 includes the blind hole 1013 as an example.
- the embodiments of the present invention are optimized for the first embodiment and the second embodiment. Therefore, in addition to the advantages of the first embodiment and the second embodiment, the following further advantages are obtained: because the cover 101 and the fingerprint recognition module 102 are Including at least one layer of the prompting marking layer, the high dielectric ink layer and the high dielectric adhesive layer, the prompting marking layer can better prompt the user for the position of the fingerprint recognition, and the high dielectric ink layer can improve the fingerprint identification.
- the sensitivity of the high dielectric adhesive layer can increase the sensitivity of fingerprint recognition while bonding the fingerprint recognition module 102 to the cover 101.
- the cover plate described in Embodiments 1 to 3 is located on the front side of the mobile phone, it is obvious that the cover plate can also be located on the back of the mobile phone. Accordingly, the fingerprint recognition module can also be disposed under the cover plate on the back side. A blind hole is disposed on the cover plate, and a prompt mark layer, a high dielectric ink layer, at least one layer of the high dielectric adhesive layer, and the like are disposed between the cover plate and the fingerprint recognition module, and details are not described herein.
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Abstract
一种终端设备，包括盖板（101）、指纹识别模组（102）以及控制单元（104）；所述盖板（101）位于所述终端设备一侧；所述指纹识别模组（102）设置于所述盖板（101）下与所述控制单元（104）电气连接，用于识别实施于所述指纹识别模组（102）对应的盖板（101）上的指纹；所述控制单元（104），用于根据所述指纹识别模组（102）识别的指纹进行鉴权处理；其中，所述盖板（101）由介电常数为第一预设值的材料制成，并且所述盖板（101）对应于所述指纹识别模组（102）的部分，其厚度为预设值。指纹识别模组（102）设置于盖板（101）之下，无需在盖板（101）上打通孔，很显然可以避免液体，尘土等对指纹识别模组（102）的影响，保证指纹识别的可靠性。
Description
本发明涉及一种终端设备，尤其涉及一种可指纹识别的终端设备。
以手机为例，终端设备通常具备指纹识别的功能。
市场上已经出现这样的具备指纹识别功能的手机：在手机的盖板上打一个通孔，在通孔内设置物理按键，将指纹识别模组与物理按键结合，这样用户可以通过按压物理按键的同时，由指纹识别模组来进行指纹识别，以便控制单元进行鉴权处理。
然而，在盖板上打通孔，无法根本避免液体，尘土等透过通孔与物理按键之间的间隙对指纹识别模组的影响，从而影响指纹识别的可靠性。
发明内容
本发明实施例提供了一种可识别指纹的终端设备，以保证指纹识别的可靠性。
第一方面，本发明实施例提供了一种终端设备,包括盖板、指纹识别模组以及控制单元；
所述盖板位于所述终端设备一侧；
所述指纹识别模组设置于所述盖板下与所述控制单元电气连接，用于识别实施于所述指纹识别模组对应的盖板上的指纹；
所述控制单元，用于根据所述指纹识别模组识别的指纹进行鉴权处理；
其中，所述盖板由介电常数为第一预设值的材料制成，并且所述面板对应于所述指纹识别模组的部分，其厚度为预设值。
在第一方面的第一种可能的实现方式中，所述终端设备还包括显示面板；所述显示面板设置于所述盖板的第一区域下，相应地，所述指纹识别模组设置在所述盖板的第二区域下的一设定位置。
结合第一方面，或者第一方面第一种可能的实现方式，在第二种可能的实现方式中，所述盖板对应所述指纹识别模组的部分设有盲孔，所述盲孔的开口朝向背离所述指纹识
别模组的一侧。
结合第一方面，或者第一方面第一种可能的实现方式，在第三种可能的实现方式中，所述盖板对应所述指纹识别模组的部分，其厚度与所述盖板的其它部分的厚度之差小于预设值。
结合第一方面，或者第一方面第一至第三种任意一种可能的实现方式，在第四种可能的实现方式中，所述盖板为透明的玻璃材质。
结合第一方面第四种可能的实现方式，在第五种可能的实现方式中，所述盖板与所述指纹识别模组之间包括有提示标识层。
结合第一方面第四种可能的实现方式，在第六种可能的实现方式中，所述盖板与所述指纹识别模组之间包括有介电常数为第二预设值的油墨层。
结合第一方面第五种可能的实现方式，在第七种可能的实现方式中，还包括介电常数为第二预设值的油墨层，所述油墨层位于所述提示标识层与所述指纹识别模组之间。
结合第一方面第一到第七种中任意一种可能的实现方式，在第八种可能的实现方式中，所述指纹识别模组通过介电常数为第三预设值的粘结剂贴合在所述盖板下的所述设定位置。
结合第一方面，或者第一方面第一至第八种任意一种可能的实现方式，在第九种可能的实现方式中，所述终端设备还包括印刷电路板,所述指纹识别模组通过所述印刷电路板与所述控制单元电气连接。
在第一方面的第十种可能的实现方式中，所述终端设备还包括显示面板；所述盖板位于所述显示面板相对的另一侧。
本发明实施例中，将指纹识别模组设置于盖板之下，无需在盖板上打通孔，很显然可以避免液体，尘土等对指纹识别模组的影响，保证指纹识别的可靠性。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为实施例一中的终端设备的正视图；
图2为图1沿A-A方向的剖面图；
图3为实施例二中的终端设备的正视图；
图4为图3中沿A-A方向的剖面图；
图5为实施例三中的终端设备的剖面图。
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例涉及可以指纹识别的终端设备。该终端设备可以包括但不限于手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑等。
实施例一
图1示出了本发明实施例涉及的终端设备的正视图，图2是图1中沿A-A方向的剖面示意图。虽然图1选用了手机作为终端设备的例子来进行描述，但这并不构成对其的限定。
参考图1和图2，手机100包括盖板101，位于盖板101之下的指纹识别模组102，印刷线路板103，以及控制单元104。
盖板101通常设置于手机100的正面，可以用于保护显示面板以及手机的其他部件。参看图1，盖板101可以分为区域1011和区域1012，区域1011下就可以设置显示面板，区域1012下的某个设定位置设置指纹识别模组102。优选地,盖板可以由玻璃、蓝宝石、树脂等材料制成。
指纹识别模组102设置在盖板101下方，用于识别用户施加于对应指纹识别模组102的盖板101上的手指指纹。优选地，指纹识别模组102设置在盖板101的区域1012的大致底边中央下方，这样用户在手握手机时，方便用户施加于盖板上的拇指的指纹被对应的指纹识别模组识别。虽然大部分用户习惯采用拇指的指纹来进行识别鉴权，这并不
排斥用户的其他手指被识别鉴权。当然，本领域技术人员也可以根据需要将指纹识别模组设置在其他位置。
本发明实施例中的指纹识别模组102至少包括电容式指纹传感器。具体地，与已有的电容式指纹传感器不同的地方在于，电容式指纹传感器包括的指纹传感器芯片无须塑封而贴合于盖板101下的上述设定位置。可选的，可通过粘结剂粘贴于盖板101下方的上述设定位置。当指纹识别识别模组102识别到用户的指纹之后，采集指纹图像，并将采集的指纹图像进行图像处理，例如二值化、提取特征点等后，将其转化为指纹数据，发送到控制单元103。优选地，指纹识别模组102还包括补强板，用于对指纹传感器进行结构补强，在此不再赘述。
控制单元103，用于根据指纹识别模组识别的指纹数据，进行鉴权处理。通常，控制单元103会将收到的指纹数据与手机已存储的指纹数据进行比对，从而根据比对结果进行相应处理。可选的，控制单元104可以为微处理器，基带芯片等等。
参看图2，指纹识别模组102电连接于印刷电路板104上。优选地，可以将指纹传感器通过FPC(Flexible Printed Circuit,柔性电路板)电连接于印刷电路板104上。进一步地，FPC的一端连接于指纹传感器，另一端通过RDL(redistribution layer，重布线层)、锡球焊接引出电极与印刷电路板104实现电连接。可选地，控制单元103位于印刷电路板104上，这样通过印刷电路板104，指纹识别模组102可以与控制单元103电气连接。当然，指纹识别模组102也可以不通过印刷电路板与控制单元103实现电气连接，本发明不做限定。
本发明实施例中的盖板101可以具有相同的厚度H1，也即是说，盖板101对应于指纹识别模组102的那部分的厚度与盖板101其他部分的厚度可以都为H1,考虑到盖板的加工精度，两者的差值可以小于一个预设值。另外，盖板101的介电常数为ε1。
本领域技术人员应当知晓，当用户将手指按压于盖板时，手指与电容式传感器相当于两个电容极板，手指与电容式传感器表面之间的盖板相当于电容极板间介质。而电容式传感器采集指纹图像则是利用手指纹线的脊与谷相对于传感器之间的电容差，形成比如8bit的灰度图像。
本领域技术人员应当知晓，电容C＝(ε*S)/d。其中ε为电容极板间介质的介电常数，s为电容极板相对覆盖面积，d为电容极板间距离。在本发明实施例中，考虑到影响电容值的主要因素，ε可以为盖板101的介电常数ε1，S可以为传感器1021的表面
面积s，d可以为盖板101的厚度H1。通常，传感器选定之后，其表面面积一定，那么根据公式C＝(ε1*s)/H1可知，影响电容值的即是盖板的介电常数ε1和盖板的厚度H1，也即是说只要盖板的介电常数ε1和盖板的厚度H1都满足预设的值，即可使电容值达到一定大小，也就能可靠地识别指纹。
本发明实施例中，将指纹识别模组设置于盖板之下，无需在盖板上打通孔，很显然可以避免液体，尘土等对指纹识别模组的影响，保证指纹识别的可靠性，另外，可以提高整机的外观美感、提高盖板的的结构强度。
实施例二
实施例二是在实施例一基础上的进一步优化，相同或相似的内容本实施例不再赘述，请参考实施例一的描述。
参看图3和图4，盖板101在对应于指纹识别模组102的位置具有盲孔1013。该盲孔1013的开口朝向背离所述指纹识别模组的一侧。优选的，盲孔1013位于区域1012的底边的中部，指纹识别模组102位于盲孔1013下方，这样用户在手握手机时，拇指能方便位于盲孔1013内，进而让盲孔下的指纹识别模组102识别指纹。虽然大部分用户习惯采用拇指的指纹来进行识别鉴权，这并不排斥用户的其他手指来识别鉴权。当然本领域技术人员也可以根据需要将盲孔以及盲孔下的指纹识别模组设置在其他位置。
具体地，可以通过腐蚀、CNC(Computer numerical control,数控机床)加工或者激光烧蚀等工艺获得局部区域减薄至设定厚度的方式获得上述盲孔。`
本发明实施例设置盲孔1013具有很好的辨识度，用户很容易知道可以进行指纹识别的位置。更重要的是，因为盲孔减薄了盖板对应指纹识别模组的部分的厚度，可以保证指纹识别的灵敏度，并且对盖板101的其他部分的整体厚度要求不高。参考实施例一中的公式电容C＝(ε*S)/d可知，在介电常数ε和面积一定的情况下，电容大小与电容极板间距离成反比，距离越小，电容越大，也就意味着传感器灵敏度越灵敏。在本实施例中，参考图4，手指和传感器这两个电容极板间的距离主要是盲孔1013的底部与传感器表面的距离h，很显然h的尺寸小于盖板101的整体厚度H2，那么相对于不开盲孔的情况，指纹识别的灵敏度会更高。
当所述盖板101使用现有的盖板玻璃时，在盖板玻璃上对应指纹识别模组的位置开盲孔，具有更好的现实意义。本领域技术人员可以知晓，现有的盖板玻璃的厚度H2为0.55-0.7mm，介电常数ε2通常在7左右。由于传感器的面积较小，根据实施例一中的
公式电容C＝(ε*S)/d可以得出，电容值相对小，那么传感器的灵敏度较低，难以满足清晰识别指纹的需求。而在盖板玻璃上对应指纹识别模组的位置开盲孔之后，参考图4，盲孔底部据传感器的距离h，比如为0.3mm，明显变小，那么得到的电容值就明显变大，那么传感器的灵敏度明显提高，满足了清晰识别指纹的需求。
本发明实施例中，指纹识别模组设置于盖板之下，无需在盖板上打通孔，很显然可以避免液体，尘土等对指纹识别模组的影响，保证指纹识别的可靠性，另外，可以提高整机的外观美感、提高盖板的的结构强度。
更进一步，本发明实施例在盖板对应指纹识别模组的部分设有盲孔，减小了该部分的厚度，这样用户的手指与指纹识别模组之间的距离明显减小，可以提高指纹识别的灵敏度，另外，盲孔的设置具有良好的辨识度，使得用户很容易知道可以进行指纹识别的位置。
实施例三
实施例三是在实施例一和实施例二基础上的进一步优化，相同或相似的内容本实施例不再赘述，请参考实施例一和实施例二的描述。
参看图5，在盖板101与指纹识别模组102之间依次层叠有提示标识层105、高介电油墨层106、高介电粘结剂层107。
该提示表示层105可以具备特定颜色，或者具备特定图案，或者两者兼而有之。其目的是当盖板101为透明的材质，比如已有的盖板玻璃时，为了更好地提示用户指纹识别的位置。
具体地，可以采用NCVM(Non-Conductive Vacuum Metalize，非导电真空电镀)工艺将提示标识层105涂覆于盖板101与指纹识别模组102之间。
该高介电油墨层106为具有较高的介电常数的油墨层，比如介电常数5-7，用于提高指纹识别的灵敏度，原因如前所述，传感器灵敏度正相关于电容大小，而电容正比于介电常数。
具体地，可以在普通油墨里面添加氧化钛、氧化锆等金属氧化物来提高介电常数数值。需要说明的是，虽然较高的介电常数有助于提高指纹识别的灵敏度，但是如果添加金属太多，容易形成金属屏蔽，反而影响指纹识别的灵敏度。
该高介电粘结剂层107为具有较高的介电常数的粘结剂层，比如介电常数7-8，可
以在将指纹识别模块102粘结到盖板101下的同时，提高指纹识别的灵敏度，原因同上，传感器灵敏度正相关于电容大小，感应电容又正比于介电常数。
具体地，可以在普通粘结剂里面添加氧化钛、氧化锆等金属氧化物来提高介电常数数值。需要说明的是，虽然较高的介电常数有助于提高指纹识别的灵敏度，但是如果添加金属太多，容易形成金属屏蔽，反而影响指纹识别的灵敏度。
在盖板101下方还包括丝印油墨层108，其位于盖板玻璃的区域1012下方，用于装饰遮蔽，防止漏光。因为这属于已有的设置，在此不再赘述。
虽然图5中，提示标识层105、高介电油墨层106，高介电粘结剂层107依次层叠在盖板101与指纹识别模组102之间，但是这并不对其构成限定，本领域技术人员可以根据需要选用其中的至少一层。比如，盖板101与指纹识别模组102之间仅包括高介电粘结剂层107，或者包括依次层叠的提示标识层105和高介电粘结剂层107(提示标识层105靠近盖板101，高介电粘结剂层107靠近指纹识别模组102)，或者包括依次层叠的高介电油墨层106和高介电粘结剂层107(高介电油墨层106靠近盖板101，高介电粘结剂层107靠近指纹识别模组102)等等。
本发明实施例重点阐述提示标识层、高介电油墨层，高介电粘结剂层等其他构成，因此图5中指纹识别模组102对应的盖板部分包括有盲孔1013仅仅是示例，当然也可以没有盲孔，本领域技术人员可以理解，这并不构成对其的限定。
本发明实施例为实施例一和实施例二的优化，因此，除了具备实施例一和实施例二的优点之外，还具有如下进一步的优点：因为在盖板101与指纹识别模组102之间包括有提示标识层、高介电油墨层，高介电粘结剂层中的至少一层，那么提示标识层可以更好地提示用户指纹识别的位置，高介电油墨层可以提高指纹识别的灵敏度，高介电粘结剂层可以在将指纹识别模块102粘结到盖板101下的同时，提高指纹识别的灵敏度。
其它变形：
虽然，实施例一至三介绍的盖板位于手机的正面，很明显，盖板也可以位于手机的背面，那么相应地，指纹识别模组也可以设置在背面的盖板下面。至于盖板上设置盲孔，盖板与指纹识别模组之间设置有提示标识层、高介电油墨层，高介电粘结剂层中的至少一层等等，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (11)
- 一种终端设备,其特征在于,包括盖板、指纹识别模组以及控制单元；所述盖板位于所述终端设备一侧；所述指纹识别模组设置于所述盖板下与所述控制单元电气连接，用于识别实施于所述指纹识别模组对应的盖板上的指纹；所述控制单元，用于根据所述指纹识别模组识别的指纹进行鉴权处理；其中，所述盖板由介电常数为第一预设值的材料制成，并且所述面板对应于所述指纹识别模组的部分，其厚度为预设值。
- 根据权利要求1所述的终端设备，其特征在于，所述终端设备还包括显示面板；所述显示面板设置于所述盖板的第一区域下，相应地，所述指纹识别模组设置在所述盖板的第二区域下的一设定位置。
- 根据权利要求1或2所述的终端设备，其特征在于，所述盖板对应所述指纹识别模组的部分设有盲孔，所述盲孔的开口朝向背离所述指纹识别模组的一侧。
- 根据权利要求1或2所述的终端设备，其特征在于，所述盖板对应所述指纹识别模组的部分，其厚度与所述盖板的其它部分的厚度之差小于预设值。
- 根据权利要求1-4任一项所述的终端设备，其特征在于，所述盖板为透明的玻璃材质。
- 根据权利要求5所述的终端设备，其特征在于，所述盖板与所述指纹识别模组之间包括有提示标识层。
- 根据权利要求5所述的终端设备，其特征在于，所述盖板与所述指纹识别模组之间包括有介电常数为第二预设值的油墨层。
- 根据权利要求6所述的终端设备，其特征在于，还包括介电常数为第二预设值的油墨层，所述油墨层位于所述提示标识层与所述指纹识别模组之间。
- 根据权利要求2-8任一项所述的终端设备，其特征在于，所述指纹识别模组通过介电常数为第三预设值的粘结剂贴合在所述盖板下的所述设定位置。
- 根据权利要求1-9任一项所述的终端设备，其特征在于，所述终端设备还包括印刷电路板,所述指纹识别模组通过所述印刷电路板与所述控制单元电气连接。
- 根据权利要求1所述的终端设备，其特征在于，所述终端设备还包括显示面板；所述盖板位于所述显示面板相对的另一侧。
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- 2015-08-21 WO PCT/CN2015/087806 patent/WO2017031634A1/zh active Application Filing
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| CN109426768A (zh) * | 2017-08-24 | 2019-03-05 | 蓝思科技（长沙）有限公司 | 指纹识别组件及智能终端 |
| CN112949593A (zh) * | 2018-12-13 | 2021-06-11 | 深圳市汇顶科技股份有限公司 | 指纹识别装置和电子设备 |
| US11917763B2 (en) | 2018-12-13 | 2024-02-27 | Shenzhen GOODIX Technology Co., Ltd. | Fingerprint identification apparatus and electronic device |
| CN112949593B (zh) * | 2018-12-13 | 2024-04-30 | 深圳市汇顶科技股份有限公司 | 指纹识别装置和电子设备 |
| CN113611217A (zh) * | 2021-08-11 | 2021-11-05 | 昆山国显光电有限公司 | 显示面板和显示装置 |
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