CN210142326U - Optical fingerprint identification device and electronic equipment - Google Patents
Optical fingerprint identification device and electronic equipment Download PDFInfo
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- CN210142326U CN210142326U CN201920748744.XU CN201920748744U CN210142326U CN 210142326 U CN210142326 U CN 210142326U CN 201920748744 U CN201920748744 U CN 201920748744U CN 210142326 U CN210142326 U CN 210142326U
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Abstract
The embodiment of the application provides an optical fingerprint identification device and electronic equipment, and the optical fingerprint identification device is applied to the electronic equipment provided with a display screen assembly, and a light supplementing mechanism is arranged in the optical fingerprint identification device and used for supplementing light to a fingerprint identification induction area on the display screen assembly. The embodiment of the application can supplement light to the fingerprint identification sensing area of the electronic equipment, so that the reliability of the optical fingerprint identification device is improved.
Description
Technical Field
The present application relates to the field of optical fingerprint identification technologies, and in particular, to an optical fingerprint identification apparatus and an electronic device.
Background
Currently, in a trend of electronic devices such as an intelligent mobile terminal toward a full screen, an underscreen fingerprint technology is generated in compliance with the trend. The off-screen fingerprint identification means that the fingerprint identification device can be arranged below a touch display area of an electronic device (such as an intelligent mobile terminal); therefore, the fingerprint identification area can be located within the range of the touch display area. When a user finger contacts a fingerprint identification area located in the range of the touch display area, the fingerprint identification device can perform fingerprint acquisition and other processing.
The current fingerprint identification under the screen mainly has two schemes of optics and ultrasound, and compared with the ultrasound scheme, optics has the advantages of low power consumption, high research and development speed and the like, so that the current fingerprint identification under the screen becomes the mainstream of the current fingerprint identification under the screen. With the continuous development of Organic Light-Emitting Diode (OLED) technology, electronic devices equipped with OLED display modules are now on the market. Because the OLED has a self-luminous characteristic, a light supplement light source is not generally arranged on the electronic device for the optical fingerprint identification device any more, so that the cost is saved, the structure is simplified, and the energy consumption is reduced. However, in the process of realizing the present application, the utility model discloses people of the present application find that, under some circumstances (for example external light is darker etc.), this kind of electronic equipment may appear because of luminous intensity is not enough, and can't effectively carry out optical fingerprint identification's problem.
SUMMERY OF THE UTILITY MODEL
An object of the embodiments of the present application is to provide an optical fingerprint identification apparatus and an electronic device, so as to solve the problem that the electronic device may not effectively perform optical fingerprint identification due to insufficient luminous intensity of a display screen assembly.
In order to achieve the above object, in one aspect, an embodiment of the present application provides an optical fingerprint identification device, which is applied to an electronic device configured with a display screen assembly, wherein a light supplement mechanism is provided in the optical fingerprint identification device, so as to supplement light to a fingerprint identification sensing area on the display screen assembly.
In another aspect, an embodiment of the present application provides an electronic device, where the electronic device is configured with a display screen assembly and the optical fingerprint identification apparatus.
According to the technical scheme provided by the embodiment of the application, the electronic equipment can be configured with the display screen assembly and the optical fingerprint identification device. Wherein, be provided with the light filling mechanism that is used for to the display screen subassembly light filling in the optics fingerprint identification device, this light filling mechanism can respond to regional light filling to the fingerprint identification when regional luminous intensity of fingerprint identification on the display screen subassembly is not enough for fingerprint identification responds to regional light filling, makes the photosensitive element in the optics fingerprint identification device still can sense the fingerprint light effectively, thereby has improved optics fingerprint identification device's reliability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:
FIG. 1 is a schematic diagram of an electronic device according to some embodiments of the present application;
FIG. 2 is a schematic diagram of an optical fingerprint identification device according to an exemplary embodiment of the present application;
fig. 3 is a schematic structural diagram of an optical fingerprint identification device according to another exemplary embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. For example, in one description, forming the second feature over the first feature may include embodiments in which the first and second features are formed in direct contact, embodiments in which the first and second features are formed in non-direct contact (i.e., additional features may be included between the first and second features), and so on.
Also, for ease of description, some embodiments of the present application may use spatially relative terms such as "above …," "below …," "top," "below," etc., to describe the relationship of one element or component to another (or other) element or component as illustrated in the various figures of the embodiments. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or components described as "below" or "beneath" other elements or components would then be oriented "above" or "over" the other elements or components.
The electronic device of some embodiments of the present application may be configured with a display screen assembly and an optical fingerprint recognition device. The display screen assembly can be a self-luminous display screen which adopts self-luminous units as display pixels, such as an OLED display screen or an LED display screen; but also may be an LCD display or other passive light emitting display, which is not limited in this specification. When the display screen assembly is a passive light-emitting display screen, the electronic device may be further configured with an additional light source located below the passive light-emitting display screen. Therefore, those skilled in the art can understand that the light supplement structure in the present specification does not limit whether the display panel assembly is self-luminous. Wherein, be provided with the light filling mechanism that is used for to the display screen subassembly light filling in the optics fingerprint identification device, this light filling mechanism can respond to regional luminous intensity inadequately (for example external environment light is darker, especially external environment light is darker and electronic equipment has opened "eyeshield mode" again) the time at the fingerprint identification on the display screen subassembly, respond to regional light filling to the fingerprint identification for photosensitive element in the optics fingerprint identification device still can sense the fingerprint light effectively, thereby has improved optics fingerprint identification device's reliability. In addition, the light supplementing mechanism is arranged in the optical fingerprint identification device in an integrated structure design, so that the installation and the maintenance are convenient.
In some embodiments of the present application, the electronic device may include a mobile terminal (or referred to as a portable terminal). These mobile terminals may include, but are not limited to, for example, handheld computers, tablet computers, smart phones, digital assistants, smart wearable devices, in-vehicle computers, and the like. Wherein, wearable equipment of intelligence can include intelligent bracelet, intelligent wrist-watch, intelligent glasses, intelligent helmet etc.. As shown in fig. 1, in an exemplary embodiment, a smart phone 100, which is a typical mobile terminal, may be configured with a display screen assembly 200 and an optical fingerprint recognition device (not shown in fig. 1). The display screen assembly 200 is provided with a fingerprint recognition sensing area 300 of an optical fingerprint recognition device to realize the collection of optical fingerprints. Of course, in other embodiments of the present application, the electronic device is not limited to a mobile terminal, and may also be a non-mobile terminal such as a desktop computer and a fingerprint lock.
In some embodiments of the present application, the light supplement mechanism disposed in the optical fingerprint identification apparatus may include a light supplement light source and a light transmission element. Wherein, light transmission element can be used to reflect the incident light of light filling light source transmission to fingerprint identification induction zone on to carry out the light filling to fingerprint identification induction zone, and refract the fingerprint light of fingerprint identification induction zone reflection to optical fingerprint identification device's photosensitive element. This kind of light filling light source is in sensitization light path one side of light sensing element and the structure setting of light filling of can throwing directly, both can realize carrying out effective light filling to fingerprint identification response area, can not shelter from light sensing element response fingerprint light because of the existence of light filling light source again and probably. Here, the fingerprint light refers to an optical signal carrying fingerprint information.
In some embodiments of the present application, the light supplement mechanism may further include a control module. The control module can be used for detecting the light intensity of the fingerprint identification sensing area when the fingerprint identification sensing area is triggered, comparing the light intensity with a preset light intensity threshold value, and if the light intensity is lower than the light intensity threshold value, starting the light supplementing mechanism to supplement light; and if the light intensity is not lower than the light intensity threshold value, exiting. Therefore, the light supplementing time can be accurately controlled, effective light supplementing can be realized, and energy consumption is saved as much as possible. The fingerprint identification sensing area is triggered, namely the fingerprint identification sensing area is activated or lightened, and when the fingerprint identification sensing area is triggered, the control module is triggered.
In other embodiments of the present application, the control module may be further configured to detect whether an event triggering the light supplement mechanism to be turned off comes in real time after the light supplement mechanism is turned on; if the current time comes, the light supplementing mechanism is turned off to save energy consumption. In some exemplary embodiments, the event triggering the fill light mechanism to turn off may include, for example, but is not limited to, any one of the following events:
1. the optical fingerprint identification device finishes optical fingerprint acquisition;
2. the optical fingerprint identification device completes optical fingerprint identification;
3. the optical fingerprint recognition device has completed optical fingerprint recognition, and the electronic apparatus outputs a response based on the recognition result. Wherein the response based on the recognition result may be perceptible. For example, in a device unlocking scene, when fingerprint identification is successful, the response of the electronic device is to jump from a screen locking state to an unlocking state; when the fingerprint identification fails, the electronic equipment responds to maintain the screen locking state, and meanwhile, a visual prompt and/or a vibration prompt and the like for unlocking failure can be output. Of course, the application scenario of the optical fingerprint recognition apparatus in each embodiment of the present application is not limited to the above-mentioned equipment unlocking scenario, and the apparatus may also be applied to any application scenario requiring identity authentication through fingerprint recognition, such as payment and entrance guard, as required.
4. The current continuous light supplement duration of the light supplement mechanism reaches a preset light supplement duration threshold, for example, 3 seconds, 5 seconds, and the like.
It should be understood by those skilled in the art that the light supplement mechanism is described above for the exemplary embodiments of the present application, and should not be construed as limiting the light supplement mechanism of the present application, and in other embodiments of the present application, the light supplement mechanism may adopt any other suitable structure as needed. For example, the light supplement mechanism may not be provided with a light transmission element, and the emission direction of the light supplement light source in the optical fingerprint identification device may be directed to the fingerprint identification sensing area. For another example, the control of the on/off of the light supplement mechanism may be implemented by other methods such as manual operation without the need of the control module. Wherein, under manual operation implementation, can be equipped with the control button that is used for controlling the light filling light source and opens and close and mend the luminous intensity on the electronic equipment. The control key can be a virtual key or a physical key; the physical keys can be realized by single physical key operation or by combined operation of a plurality of physical keys.
In some embodiments of the present disclosure, the light intensity of the fill-in light source may be a fixed value; in this case, the fill-in light source may be a fill-in light source that is not dimmable, so as to reduce cost. In other embodiments of the present application, the light intensity of the light supplement light source may be variable, that is, the light intensity of the light supplement light source may be adjusted within a certain range; in this case, the control module may determine the light intensity of the light supplement light source according to a difference between the light intensity threshold and the detected light intensity, so as to implement light supplement as needed, thereby saving energy consumption.
In some embodiments of the present application, it is contemplated that white light may undergo relatively severe dispersion splitting during refraction from an optically dense medium (i.e., light transmitting element) to an optically thinner medium (i.e., air), which may adversely affect the sensing element by inducing a fingerprint band. Therefore, preferably, the supplementary light source can be a monochromatic light source. It should be understood that the monochromatic light source mentioned herein is not only a fill light source capable of emitting only a single frequency (or wavelength), but also a fill light source capable of emitting a specific wavelength band with a shorter wavelength band, such as an infrared light source.
In some embodiments of the present application, the horizontal projection of the fingerprint light refracted by the light transmission element at least covers the photosensitive area of the photosensitive element, i.e. the photosensitive area of the photosensitive element is a proper subset of the horizontal projection range of the fingerprint light, so that the photosensitive element can sense the complete fingerprint image.
In some embodiments of the present application, the light transmitting element may be any optical element capable of performing the corresponding functions described above. Such optical elements may include, but are not limited to, for example, mirrors, prisms (e.g., triangular, rectangular, pentagonal, etc.), etc., as well as others.
For example, in an exemplary embodiment, the optical transmission element of the optical fingerprint recognition device 400 may be an isosceles right angle prism 405 as shown in FIG. 2. The optical fingerprint recognition apparatus 400 shown in fig. 2 may specifically include:
a housing 401 having an upper opening and a lower opening;
a lighting lens 402 disposed at an upper opening of the housing 401;
a base 403 which is arranged at the lower opening of the shell 401 in a matching way;
a light sensing element 406 disposed on the base 403 and corresponding to the lighting lens 402;
a light supplement light source 404 disposed on an inner sidewall of the housing 401;
an isosceles right-angle prism 405 may be disposed between the lighting lens 402 and the light sensing element 406, i.e., on the light sensing path of the light sensing element 406. The light source 404 can emit an incident light perpendicular to a straight surface of the isosceles right-angle prism 405, and correspondingly, the fingerprint light can be perpendicular to the other straight surface of the isosceles right-angle prism 406, so as to facilitate light transmission. Therefore, the prism is used as the light transmission element, and the prism has the characteristics of convenience in installation, high mechanical strength and good stability.
For another example, in another exemplary embodiment, the optical transmission element of the optical fingerprint recognition device 400 may also be a flat mirror 405' as shown in FIG. 3. The optical fingerprint recognition apparatus 400 shown in fig. 3 may specifically include:
a housing 401 having an upper opening and a lower opening;
a lighting lens 402 disposed at an upper opening of the housing 401;
a base 403 which is arranged at the lower opening of the shell 401 in a matching way;
a light sensing element 406 disposed on the base 403 and corresponding to the lighting lens 402;
a light supplement light source 404 disposed on an inner sidewall of the housing 401;
plane mirror 405' may be disposed between lighting lens 402 and photosensitive element 406, i.e., disposed on the photosensitive path of photosensitive element 406. The incident light emitted by the fill-in light source 404 may form a 45-degree angle with the plane mirror 405 ', and the fingerprint light may also form a 45-degree angle with the plane mirror 405', so as to facilitate the transmission of light. Thus, the plane mirror is used as the light transmission element, and the light transmission element has the characteristics of simple structure and low cost.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the various elements may be implemented in the same or in multiple hardware implementations.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of another like element in a device or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (13)
1. An optical fingerprint identification device is applied to electronic equipment provided with a display screen assembly, and is characterized in that a light supplementing mechanism is arranged in the optical fingerprint identification device and used for supplementing light to a fingerprint identification induction area on the display screen assembly; wherein, light filling mechanism includes:
a light source for light supplement;
and the light transmission element is used for reflecting incident light emitted by the light supplementing light source to the fingerprint identification sensing area so as to supplement light to the fingerprint identification sensing area and refract the fingerprint light reflected by the fingerprint identification sensing area to the photosensitive element of the optical fingerprint identification device.
2. The optical fingerprint recognition device of claim 1, wherein the light supplementing mechanism further comprises:
and the control module is used for detecting the light intensity of the fingerprint identification sensing area when the fingerprint identification sensing area is triggered, comparing the light intensity with a preset light intensity threshold value, and if the light intensity is lower than the light intensity threshold value, starting the light supplementing mechanism to supplement light.
3. The optical fingerprint identification device according to claim 2, wherein the control module is further configured to detect whether an event triggering the light supplement mechanism to turn off comes in real time after the light supplement mechanism is turned on; and if the event triggering the light supplementing mechanism to be closed comes, closing the light supplementing mechanism.
4. The optical fingerprint recognition device according to claim 3, wherein the event triggering the light supplement mechanism to turn off comprises any one of the following events:
the optical fingerprint identification device finishes optical fingerprint acquisition;
the optical fingerprint identification device completes optical fingerprint identification;
the optical fingerprint recognition device has completed optical fingerprint recognition, and the electronic equipment outputs a response based on the recognition result;
the current continuous light supplement duration of the light supplement mechanism reaches a preset light supplement duration threshold.
5. The optical fingerprint identification device of claim 1 wherein a horizontal projection of the fingerprint light refracted by said light transmissive element covers at least a photosensitive area of said photosensitive element.
6. The optical fingerprint identification device of claim 1 wherein the fill-in light source is a monochromatic light source.
7. The optical fingerprint recognition device of claim 1 wherein said light transmissive element comprises any one of:
a plane mirror;
and a prism.
8. The optical fingerprint identification device of claim 7 wherein said prism comprises an isosceles right angle prism.
9. The optical fingerprint recognition device of claim 8 wherein the incident light is perpendicular to the first straight side of the isosceles right prism and the fingerprint light is perpendicular to the second straight side of the isosceles right prism.
10. The optical fingerprint recognition device of claim 1, wherein said optical fingerprint recognition device comprises:
a housing having an upper opening and a lower opening;
the lighting lens is arranged at the upper opening in a matching way;
the base is arranged at the lower opening in a matched mode;
and the photosensitive element is arranged on the base and is correspondingly matched with the lighting lens.
11. The optical fingerprint identification device of claim 10, wherein the light supplement source is disposed on an inner sidewall of the housing.
12. An electronic device, characterized in that the electronic device is provided with a display screen assembly and the optical fingerprint recognition apparatus of any one of claims 1 to 11.
13. The electronic device of claim 12, wherein the electronic device comprises a mobile terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920748744.XU CN210142326U (en) | 2019-05-23 | 2019-05-23 | Optical fingerprint identification device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920748744.XU CN210142326U (en) | 2019-05-23 | 2019-05-23 | Optical fingerprint identification device and electronic equipment |
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| CN210142326U true CN210142326U (en) | 2020-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110210353A (en) * | 2019-05-23 | 2019-09-06 | 上海思立微电子科技有限公司 | Optical fingerprint identification device, electronic equipment, light compensation method and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110210353A (en) * | 2019-05-23 | 2019-09-06 | 上海思立微电子科技有限公司 | Optical fingerprint identification device, electronic equipment, light compensation method and storage medium |
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