WO2021016951A1 - 电子设备 - Google Patents
电子设备 Download PDFInfo
- Publication number
- WO2021016951A1 WO2021016951A1 PCT/CN2019/098721 CN2019098721W WO2021016951A1 WO 2021016951 A1 WO2021016951 A1 WO 2021016951A1 CN 2019098721 W CN2019098721 W CN 2019098721W WO 2021016951 A1 WO2021016951 A1 WO 2021016951A1
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- WIPO (PCT)
- Prior art keywords
- electronic device
- sensor
- display area
- display screen
- light
- Prior art date
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-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/10—Mirrors with curved faces
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
Definitions
- the present disclosure relates to the field of electronic technology, and in particular to an electronic device.
- the display screens of electronic devices are no longer limited to one side of the device.
- Electronic devices with display screens on the front and back are gradually appearing, making fingerprint identification through both front and rear screens a requirement.
- a wraparound display is a brand-new mobile phone display solution.
- a wraparound display surrounds the mobile phone, so that both the front and back of the mobile phone have display screens.
- the screen ratio of mobile phones with ring-shaped displays is much larger than that of mobile phones with single-sided displays.
- the space for fingerprint recognition modules is greatly compressed. How to install a fingerprint recognition module in a limited space to realize the front and rear screen fingerprint recognition has become an urgent problem to be solved.
- the present disclosure provides an electronic device.
- an electronic device including: a display screen, a reflector, and a sensor, the electronic device includes a plurality of surfaces, and the display screen includes a first display area and a second display area, The first display area and the second display area are respectively located on different sides of the electronic device, and the display screen can transmit light;
- the reflector and the sensor are arranged inside the electronic device, and the light transmitted from the first display area and the second display area can be irradiated on the sensor after being reflected by the reflector ;
- the sensor is used to generate an electric signal for fingerprint recognition according to the received light.
- a first lens and a second lens are further provided inside the electronic device, and the first lens is used to converge the light transmitted in from the first display area to the reflector.
- the second lens is used for converging the light transmitted from the second display area to the reflecting mirror.
- the reflecting mirror includes a first reflecting prism and a second reflecting prism
- the light transmitted from the first display area can be reflected by the reflective surface of the first reflective prism and then irradiated on the sensor; and/or
- the light transmitted from the second display area can be reflected by the reflecting surface of the second reflecting prism and then irradiated on the sensor.
- the reflecting surface of the first reflecting prism is a concave surface
- the reflecting surface of the second reflecting prism is a concave surface
- the reflecting mirror includes a first concave mirror and a second concave mirror
- the light transmitted from the first display area can be reflected by the reflective surface of the first concave mirror and then irradiated on the sensor; and/or
- the light transmitted from the second display area can be reflected by the reflective surface of the second concave mirror and then irradiated on the sensor.
- the outer surface of the display screen is covered with a transparent cover, and the transparent cover can transmit light.
- a display screen support member is provided on the inner surface of the display screen, and the area of the display screen support member opposite to the reflector can transmit light.
- the display screen support member is made of a light-transmitting material.
- the display screen support is made of a non-light-transmitting material
- a through hole is opened in an area of the display screen support member opposite to the reflector, and the through hole can transmit light.
- the through hole is filled with a light-transmitting material.
- the present disclosure uses mirrors and sensors to be arranged inside the electronic device, and makes the light transmitted from the first display area or the second display area located on different sides pass through the After being reflected by the reflecting mirror, it is irradiated on the sensor, so that the sensor generates an electric signal for fingerprint recognition according to the received light. Therefore, a solution that can share sensors under the display screen is proposed. Only a single sensor can realize the collection and recognition of fingerprints on display areas on different surfaces, which occupies a small space and does not require additional sensors, which greatly reduces hardware costs. In addition, the present disclosure does not require openings on the display screen, effectively increasing the effective display area of the display screen, and further increasing the sealing and mechanical strength of the electronic device.
- Fig. 1 is a partial schematic diagram showing an electronic device according to an exemplary embodiment.
- Fig. 2 is a schematic diagram showing a reflector and a sensor in an electronic device according to an exemplary embodiment.
- Fig. 3 is a partial schematic diagram showing an electronic device according to an exemplary embodiment.
- Fig. 4 is an overall schematic diagram showing an electronic device according to an application example.
- Fig. 1 is a partial schematic diagram showing an electronic device according to an exemplary embodiment.
- the electronic device may be a device such as a mobile phone, a tablet computer, a smart watch, a notebook computer, a desktop computer, etc.
- the present disclosure does not limit the type of the electronic device.
- the electronic device includes multiple surfaces
- the display screen includes a first display area 1001 and a second display area 1002, and the first display area 1001 and the second display area 1002 are respectively located
- the display screen can transmit light;
- the reflector 101 and the sensor 102 are arranged inside the electronic device and transmit from the first display area 1001 and the second display area 1002 After the incoming light is reflected by the reflector, it can be irradiated on the sensor 102; the sensor 102 is used to generate an electrical signal for fingerprint identification according to the received light.
- the display screen may include any one of an OLED (Organic Light-Emitting Diode) display screen or an LED (Light Emitting Diode) display screen. It should be noted that the present disclosure does not limit the type of the display screen, as long as the display screen can transmit light.
- OLED Organic Light-Emitting Diode
- LED Light Emitting Diode
- any two of the multiple surfaces of the electronic device may be in a parallel relationship, or may have an included angle at any angle.
- the multiple surfaces of the electronic device may include planes and/or curved surfaces.
- the embodiments of the present disclosure The example does not limit the number and specific form of the multiple surfaces of the electronic device.
- the electronic device is a mobile phone, including a front side, a back side, an upper side, a lower side, a left side, and a right side, where the first display area and the second display area in the embodiment of the present disclosure may be located in these six surfaces Any two of them.
- the reflector can be expressed as an optical element that uses the law of light reflection to change the propagation direction of light.
- reflecting mirrors can be respectively provided corresponding to different display areas.
- the senor can be expressed as a device that uses the photoelectric conversion function of the photoelectric device in the sensor to convert a light image irradiated on the photosensitive surface of the sensor into an electrical signal proportional to the light image.
- the sensor may include a CCD (Charge-coupled Device) sensor, or a CMOS (Complementary Metal Oxide Semiconductor) sensor.
- the display screen 100 may cover the surface of the electronic device, and the display screen 100 may transmit light.
- the electronic device may include a front surface and a rear surface.
- the area where the display screen 100 is located on the front surface of the electronic device may be used as the first display area 1001 of the electronic device, and the area where the display screen 100 is located on the rear surface of the electronic device may be used as the second display area of the electronic device.
- the mirror 101 and the sensor 102 can be arranged inside the electronic device (for example, the sensor 102 can be placed on the motherboard 106 of the electronic device, and the mirror 101 can be suspended on the display screen 100 and the motherboard 106 of the electronic device through the mirror support 103.
- the mirror 101 In the gap between, the mirror 101 can be placed in the middle of the gap).
- the light transmitted from the first display area 1001 or the second display area 1002 can be irradiated on the photosensitive surface of the sensor 102 after being reflected by the reflector 101.
- the sensor 102 can be used to generate fingerprints based on the received light. Electrical signal.
- the reflector and the sensor are arranged inside the electronic device, and the light transmitted from the first display area or the second display area located on different sides is reflected by the reflector and irradiated on the sensor, so that The sensor generates an electrical signal for fingerprint recognition based on the received light. Therefore, a solution that can share sensors under the display screen is proposed. Only a single sensor can realize the collection and recognition of fingerprints on display areas on different surfaces, which occupies a small space and does not require additional sensors, which greatly reduces hardware costs. In addition, the present disclosure does not require openings on the display screen, effectively increasing the effective display area of the display screen, and further increasing the sealing and mechanical strength of the electronic device.
- the reflector may be an integrally formed optical device, or may be formed by combining multiple optical devices through the reflector support.
- the reflecting mirror may include any one or more of prisms, concave mirrors, and flat mirrors. The present disclosure does not limit the specific form of the reflector, as long as the reflector can reflect the light transmitted from the first display area or the second display area to the sensor.
- the electronic device may also be provided with a first lens and a second lens, and the first lens is used to converge the light transmitted in from the first display area to the reflector.
- the second lens is used for converging the light transmitted from the second display area to the reflecting mirror.
- a lens can be expressed as an optical element made of a light-transmitting material (such as glass, crystal, etc.) whose surface is a part of a spherical surface.
- a light-transmitting material such as glass, crystal, etc.
- the first lens 1051 can be arranged between the mirror 101 and the first display area 1001 through the mirror support 103, and the mirror 101 can be close to the first display area 1001.
- the incident surface is set at the focal plane of the first lens 1051, so that the light 1003 transmitted from the first display area 1001 is condensed to the reflector 101 through the first lens 1051, and reflected by the reflector 101 to illuminate the sensor 102 .
- the second lens 1052 can be arranged between the mirror 101 and the first display area 1001 through the mirror support 103, and the incident surface of the mirror 101 close to the second display area 1002 can be set on the focal point of the second lens 1052.
- the position of the plane is such that the light transmitted from the second display area 1002 is condensed to the reflecting mirror 101 via the second lens 1052, reflected by the reflecting mirror 101, and irradiated on the sensor 102.
- the first lens and the second lens have a light-gathering function
- the first lens and the second lens can respectively increase the intensity of the light entering the reflector, thereby enabling the sensor to obtain a stronger electrical signal according to the converged light, thereby generating more Clear images to be recognized, thereby improving the accuracy of fingerprint recognition.
- the reflecting mirror may include a first reflecting prism and a second reflecting prism; the light transmitted from the first display area can be reflected by the reflecting surface of the first reflecting prism and then irradiated on the The sensor; the light transmitted from the second display area can be reflected by the reflective surface of the second reflective prism and then irradiated on the sensor.
- the prism can be expressed as a transparent optical element surrounded by two planes that intersect but are not parallel to each other.
- the first reflective prism 1011 may include a first incident surface, a first reflective surface, and a first exit surface.
- the first incident surface may be parallel to the plane where the first display area 1001 is located.
- the first exit surface may be perpendicular to the plane where the first display area 1001 is located, and the photosensitive surface of the sensor 102 may be parallel to the first exit surface.
- the first reflective surface may respectively form a first acute angle and a second acute angle with the first incident surface and the first exit surface (for example, both the first acute angle and the second acute angle may be 45 degrees), so that from the first incident surface
- the incident light 1003 can be emitted from the first exit surface after being reflected by the first reflecting surface, and irradiate the sensor 102.
- the second reflective prism 1012 may include a second incident surface, a second reflective surface, and a second exit surface.
- the second incident surface may be parallel to the plane where the second display area 1002 is located. It may be perpendicular to the plane where the second display area 1002 is located, and the photosensitive surface of the sensor 102 may be parallel to the second exit surface.
- the second reflective surface may respectively form a third acute angle and a fourth acute angle with the second incident surface and the second exit surface (for example, the third acute angle and the fourth acute angle may both be 45 degrees), so that the The light incident on the surface can be emitted from the second exit surface after being reflected by the second reflective surface, and irradiate the sensor 102.
- the reflecting surface of the first reflecting prism is a flat surface or a concave surface
- the reflecting surface of the second reflecting prism is a flat surface or a concave surface
- Fig. 2 is a schematic diagram showing a reflector and a sensor in an electronic device according to an exemplary embodiment.
- the reflecting mirror may include a first concave mirror 1013 and a second concave mirror 1014; the light 1004 transmitted from the first display area 1001 is reflected by the reflecting surface of the first concave mirror 1013 and then irradiated On the sensor 102; the light 1005 transmitted from the second display area 1002 is reflected by the reflective surface of the second concave mirror and then irradiated on the sensor 102.
- the first concave mirror 1013 may be disposed at the position of the first reflecting prism 1011 in the electronic device shown in FIG. 1, and the first concave mirror 1013 may include a third incident surface and a third reflecting surface.
- the third exit surface where the third entrance surface may be parallel to the plane where the first display area 1001 is located, the third exit surface may be perpendicular to the plane where the first display area 1001 is located, and the photosensitive surface of the sensor 102 may be parallel to the third Exit surface.
- the third reflecting surface may be a curved surface, and the third reflecting surface is convex in a direction away from the sensor 102, so that the light 1003 incident from the third incident surface can be emitted from the third emitting surface after being reflected by the third reflecting surface , And convergently illuminate the sensor 102.
- the second concave mirror 1014 can be set at the position of the second reflective prism 1012 in the electronic device as shown in FIG. 1, and the second concave mirror 1014 can include a fourth incident surface and a fourth reflective surface.
- the fourth exit surface where the fourth entrance surface may be parallel to the plane where the second display area 1002 is located, the fourth exit surface may be perpendicular to the plane where the second display area 1002 is located, and the photosensitive surface of the sensor 102 may be parallel to the fourth Exit surface.
- the fourth reflecting surface may be a curved surface, and the fourth reflecting surface is convex in a direction away from the sensor 102, so that the light 1003 incident from the fourth incident surface can be emitted from the fourth emitting surface after being reflected by the fourth reflecting surface , And convergently illuminate the sensor 102.
- the first concave mirror and the second concave mirror can make the angle between the reflected light and the incident light larger, that is, the first concave mirror and the second concave mirror
- the mirror can respectively converge the light from the first display area and the second display area to a smaller surface.
- the area of the photosensitive surface of the sensor required for a double-sided display using a 1:1 mirrored reflective prism is twice the area of the photosensitive surface of the sensor required for a single-sided display.
- the senor needs a smaller photosensitive surface area, which effectively reduces the volume of the sensor, further saves the space inside the electronic device, and reduces the cost of the electronic device.
- the outer surface of the display screen 100 may be covered with a transparent cover 104.
- the transparent cover 104 can be an integrally formed flat cylindrical structure, and the ring-shaped display 100 can be pasted on the inner side of the transparent cover 104.
- the transparent cover plate may have a higher hardness (for example, the higher hardness may be greater than 7 on the Mohs scale) to support and protect the display screen 100, and have a higher light transmittance (for example, higher The light transmittance can be greater than 80%), so that the transparent cover 104 does not require openings, and does not affect the light transmission of the display screen 100, and can support and protect the display screen 100, further improving the airtightness and airtightness of the electronic device Mechanical strength.
- a higher hardness for example, the higher hardness may be greater than 7 on the Mohs scale
- the light transmittance for example, higher The light transmittance can be greater than 80%
- the material of the transparent cover plate may include, for example, transparent glass, transparent hard plastic, and the like.
- Fig. 3 is a partial schematic diagram showing an electronic device according to an exemplary embodiment.
- the inner surface of the display screen may be provided with a display screen support 300, and the area of the display screen support 300 opposite to the reflector 103 can transmit light.
- the display support can be made of light-transmitting material (for example, the light-transmitting material can include transparent glass, transparent hard plastic, etc.), the display support can be arranged around the motherboard of the electronic device, and the display can be displayed The screen is covered on the display support. Since the display support made of light-transmitting materials can lessen the light transmitted from the display, there is no need to open holes in the area where the display support and the reflector are opposite, and the integrity of the display support is maintained. Increase the mechanical strength of electronic equipment.
- the display support made of light-transmitting materials can lessen the light transmitted from the display, there is no need to open holes in the area where the display support and the reflector are opposite, and the integrity of the display support is maintained. Increase the mechanical strength of electronic equipment.
- the display support 300 may be made of a non-transmissive material (for example, the non-transmissive material may include metal materials such as aluminum, aluminum alloy, etc., or non-transparent hard plastics). ), the display screen support 300 can be arranged around the main board 106 of the electronic device, and a through hole 3001 can be opened in the area of the display screen support 300 and the reflector 103, and the through hole can transmit light.
- a light-transmitting material such as transparent glass or transparent hard plastic, etc.
- the display screen 100 can be covered on the display screen support 300. In this way, there is no need to limit the main body material of the display screen support to the light-transmitting material, which increases the selection range of the main material of the display screen support.
- Fig. 4 is an overall schematic diagram showing an electronic device according to an application example. As shown in FIG. 4, the display screen 100 may cover the front and rear surfaces, and the left and right sides of the electronic device.
- the electronic device may be a mobile phone
- the display screen 100 may be an OLED ring-shaped display screen.
- the display screen may surround the main board 106 of the mobile phone, and the outer surface of the display screen 100 may be covered with a transparent cover 104.
- a gap can be formed between the display screen 100 and the main board 106 on one side of the mobile phone.
- the cross section of the gap can be semicircular or rounded rectangle.
- the first lens 1051, the second lens 1052, and the first reflecting prism 1011 can be formed.
- the second reflecting prism 1012 and the sensor 102 are arranged in the gap, wherein the sensor 102 can be arranged on the main board 106 on the side of the mobile phone, the first lens 1051, the second lens 1052, the first reflecting prism 1011, the second reflecting prism 1012 can be suspended in the gap through the mirror support 103.
- the first lens 1051 may be located between the first display area 1001 and the first reflective prism 1011, and the main optical axis of the first lens 1051 may be parallel to the plane where the first display area 1001 is located.
- the first reflecting prism 1011 may include a first incident surface, a first reflecting surface, and a first exit surface.
- the first incident surface may be parallel to the plane where the first display area 1001 is located and located at the focal plane of the first lens 1051.
- the first exit surface may be perpendicular to the plane where the first display area 1001 is located, and the photosensitive surface of the sensor 102 may be parallel to the first exit surface.
- the first reflective surface can reflect the light 1003 incident from the first incident surface, so that the reflected light can be emitted from the first exit surface and irradiate the photosensitive surface of the sensor 102.
- the second lens 1052 may be located between the second display area 1002 and the first reflective prism 1011, and the main optical axis of the second lens 1052 may be parallel to the plane where the second display area 1002 is located.
- the second reflecting prism 1012 may include a second incident surface, a second reflecting surface, and a second exit surface.
- the second incident surface may be parallel to the plane where the second display area 1002 is located and located at the focal plane of the second lens 1052.
- the second exit surface may be perpendicular to the plane where the second display area 1002 is located, and the photosensitive surface of the sensor 102 may be parallel to the second exit surface.
- the second reflective surface can reflect the light 1003 incident from the second incident surface, so that the reflected light can be emitted from the second exit surface and irradiate the photosensitive surface of the sensor 102.
- the tested object can approach or stick a finger to any one of the first display area 1001 or the second display area 1002 of the mobile phone.
- the tested object can stick a finger on the first display area 1001.
- the light 1003 emitted by the first display area 1001 is transmitted to the finger through the transparent cover 104, and then is reflected by the finger and passes through the transparent
- the cover plate 104 propagates back to the display screen 100, and reaches the first lens 1051 under the display screen 100 through the gap between the pixels of the display screen 100, and is condensed by the first lens 1051 and then incident on the first incident surface.
- the sensor 102 can generate an electrical signal for fingerprint recognition according to the received light 1003, and send it to the fingerprint recognition chip of the mobile phone.
- the fingerprint identification chip obtains the fingerprint identification result of the measured object according to the electrical signal. In this way, a single sensor can be used to achieve the function of double-sided fingerprint detection, which increases the convenience of use.
- the position of the first lens (second lens) is not limited to the first mirror (second mirror), for example, the front or rear of the first reflecting prism (second reflecting prism) ,
- the focal length of the first lens (the second lens), the two concave surfaces, to give you the curvature of the concave lens can achieve imaging on the sensor.
- the entire optical system is designed to realize that the light transmitted from the display areas on different sides passes through the optical system and irradiates the same sensor as the premise. It can be based on the specific form of the device. Or, depending on the specific surface where the display area is located, appropriate adjustments are made to parameters such as the type of optical device, the optical parameters of the optical device, the placement position, and the relative position relationship between different devices. For example, the aforementioned two lenses or two prisms may be arranged in parallel, or may also be arranged at a certain angle.
- the present disclosure is not limited to the light transmitted from the first display area and the second display area of the electronic device after passing through the optical system and irradiating the same sensor, and it may also include display areas on more surfaces.
- the third display area is located on a surface different from the surface where the first display area and the second display area are located, and the light transmitted from the three display areas illuminates the same sensor after passing through the optical system.
- a set of optical systems is provided corresponding to each display area, for example, a third lens and a third reflecting prism (or a third concave mirror) are provided for the third display area.
- a set of optical systems can also be provided for multiple display areas.
- a set of shared optical systems can be provided for adjacent display areas (for example, the front and left sides of the mobile phone). The optical system, in this way, the light transmitted through the adjacent display area can all illuminate the same sensor after passing through the optical system.
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Abstract
一种电子设备,包括:显示屏(100)、反射镜(101)和传感器(102),显示屏(100)位于电子设备前表面的区域为第一显示区域(1001)、显示屏(100)位于电子设备后表面的区域为第二显示区域(1002)、显示屏(100)能够透射光线;反射镜(101)和传感器(102)设置在电子设备内部,从第一显示区域(1001)或第二显示区域(1002)透射进来的光经反射镜(101)反射后,照射在传感器(102)上;传感器(102)根据接收到的光产生用于进行指纹识别的电信号。本方案提出一种显示屏下可共用传感器的方案,仅采用单一的传感器既可实现多面显示设备的指纹的采集和识别,占用空间小,且无需额外的传感器,大大降低硬件成本。
Description
本公开涉及电子技术领域,尤其涉及一种电子设备。
手机等电子设备的显示屏已不再局限于设备的一面,前后面均有显示屏的电子设备逐渐出现,使得通过前后屏幕均能进行指纹识别成为一种需求。
例如,环状(wraparound)显示屏是一全新的手机显示方案,相关技术中,环状屏环绕于手机四周,使得手机前后均具有显示屏。采用环状显示屏的手机屏占比远远大于采用单面显示屏的手机,而相应的,采用环状显示屏的手机中,用于指纹识别的模组的空间被大大压缩。如何在有限的空间中设置指纹识别模组以实现前后屏幕指纹识别成为亟待解决的问题。
发明内容
为克服相关技术中存在的问题,本公开提供一种电子设备。
根据本公开实施例的第一方面,提供一种电子设备,包括:显示屏、反射镜和传感器,所述电子设备包括多个面,所述显示屏包括第一显示区域和第二显示区域,所述第一显示区域和所述第二显示区域分别位于所述电子设备的不同面,所述显示屏能够透射光线;
所述反射镜和所述传感器设置在所述电子设备内部,从所述第一显示区域和所述第二显示区域透射进来的光经所述反射镜反射后,均能够照射在所述传感器上;
所述传感器用于根据接收到的光产生用于进行指纹识别的电信号。
在一种可能的实现方式中,所述电子设备内部还设置有第一透镜和第二透镜,所述第一透镜用于将从所述第一显示区域透射进来的光汇聚至所述反射镜,所述第二透镜用于将从所述第二显示区域透射进来的光汇聚至所述反射镜。
在一种可能的实现方式中,所述反射镜包括第一反射棱镜和第二反射棱镜;
从所述第一显示区域透射进来的光能够经第一反射棱镜的反射面反射后,照射在所述传感器上;和/或
从所述第二显示区域透射进来的光能够经第二反射棱镜的反射面反射后,照射在所述 传感器上。
在一种可能的实现方式中,所述第一反射棱镜的反射面为凹面,和/或,所述第二反射棱镜的反射面为凹面。
在一种可能的实现方式中,所述反射镜包括第一凹面镜和第二凹面镜;
从所述第一显示区域透射进来的光能够经第一凹面镜的反射面反射后,照射在所述传感器上;和/或
从所述第二显示区域透射进来的光能够经第二凹面镜的反射面反射后,照射在所述传感器上。
在一种可能的实现方式中,所述显示屏的外表面覆盖有透明盖板,所述透明盖板能够透射光线。
在一种可能的实现方式中,所述显示屏的内表面设置有显示屏支撑件,所述显示屏支撑件与反射镜相对的区域能够透射光线。
在一种可能的实现方式中,所述显示屏支撑件由透光材料制成。
在一种可能的实现方式中,所述显示屏支撑件由非透光材料制成;
所述显示屏支撑件与所述反射镜相对的区域开设通孔,所述通孔能够透射光线。
在一种可能的实现方式中,所述通孔中填充有透光材料。
本公开的实施例提供的技术方案可以包括以下有益效果:本公开通过将反射镜和传感器设置电子设备内部,并使得从位于不同面的第一显示区域或第二显示区域透射进来的光经所述反射镜反射后,照射在所述传感器上,以使得传感器根据接收到的光产生用于进行指纹识别的电信号。由此提出一种显示屏下可共用传感器的方案,仅采用单一的传感器既可实现位于不同表面的显示区域的指纹的采集和识别,占用空间小,且无需额外的传感器,大大降低硬件成本。此外,本公开无需在显示屏上开孔,有效增加了显示屏的有效显示区域,且进一步增加了电子设备的封闭性和机械强度。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本公开。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种电子设备的局部示意图。
图2是根据一示例性实施例示出的一种电子设备中反射镜与传感器的示意图。
图3是根据一示例性实施例示出的一种电子设备的局部示意图。
图4是根据一应用示例示出的电子设备的整体示意图。
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
图1是根据一示例性实施例示出的一种电子设备的局部示意图。该电子设备可以为诸如手机、平板电脑、智能手表、笔记本电脑、台式电脑等设备,本公开对电子设备的类型不做限定。
如图1所示,所述电子设备包括多个面,所述显示屏包括第一显示区域1001和第二显示区域1002,所述第一显示区域1001和所述第二显示区域1002分别位于所述电子设备的不同面,所述显示屏能够透射光线;所述反射镜101和所述传感器102设置在所述电子设备内部,从所述第一显示区域1001和所述第二显示区域1002透射进来的光经所述反射镜反射后,均能够照射在所述传感器102上;所述传感器102用于根据接收到的光产生用于进行指纹识别的电信号。
在本公开中,显示屏可以包括OLED(有机发光二极管,Organic Light-Emitting Diode)显示屏,或LED(发光二极管,Light Emitting Diode)显示屏中的任意一种。需要说明的是,本公开对显示屏的类型不做限定,只要该显示屏能够透射光线即可。
本公开实施例的电子设备的多个面中的任意两个面之间可以呈平行关系、也可以具有任意角度的夹角,电子设备的多个面可以包括平面和/或曲面,本公开实施例对电子设备的多个面的数量和具体形态不做限定。例如,电子设备为手机,包括正面、背面、上侧面、下侧面、左侧面和右侧面,其中,本公开实施例中的第一显示区域和第二显示区域可以位于这六个面中的任意两个。
本公开实施例中,反射镜可以表示为利用光的反射定律改变光的传播方向的光学元件。其中,本公开实施例中的反射镜,可以是一个或者多个。优选的,可以对应不同的显示区域分别设置反射镜。
本公开实施例中,传感器可以表示为是利用传感器中光电器件的光电转换功能,将照 射到传感器感光面上的光像转换为与光像成相应比例关系的电信号的器件。传感器可以包括CCD(电荷耦合元件,Charge-coupled Device)传感器,或CMOS(互补金属氧化物半导体,Complementary Metal Oxide Semiconductor)传感器。
作为本实施例的一个示例,如图1所示,显示屏100可以覆盖在电子设备表面,且显示屏100可以透射光线。电子设备可以包括前表面和后表面,可以将显示屏100位于电子设备前表面的区域作为电子设备的第一显示区域1001,可以将显示屏100位于电子设备后表面的区域作为电子设备的第二显示区域1002。可以将反射镜101和传感器102设置在电子设备内部(例如,传感器102可以放置于电子设备的主板106上,反射镜101可以通过反射镜支撑件103悬空架设在显示屏100与电子设备的主板106之间的空隙当中,可以将反射镜101设置在该空隙的中间)。从第一显示区域1001或第二显示区域1002透射进来的光经反射镜101反射后,均能够照射在传感器102的感光面上,传感器102可以用于根据接收到的光产生用于进行指纹识别的电信号。
本公开通过将反射镜和传感器设置电子设备内部,并使得从位于不同面的第一显示区域或第二显示区域透射进来的光经所述反射镜反射后,照射在所述传感器上,以使得传感器根据接收到的光产生用于进行指纹识别的电信号。由此提出一种显示屏下可共用传感器的方案,仅采用单一的传感器既可实现位于不同表面的显示区域的指纹的采集和识别,占用空间小,且无需额外的传感器,大大降低硬件成本。此外,本公开无需在显示屏上开孔,有效增加了显示屏的有效显示区域,且进一步增加了电子设备的封闭性和机械强度。
在一种可能的实现方式中,反射镜可以为一体成型的光学器件,也可以由多个光学器件通过反射镜支撑件组合而成。反射镜可以包括棱镜、凹面镜、平面镜中任意一种或多种。本公开对反射镜的具体形态不做限定,只要该反射镜能够将从第一显示区域或第二显示区域透射进来的光反射至所述传感器上即可。
作为本实施例的一个示例,所述电子设备内部还可以设置有第一透镜和第二透镜,所述第一透镜用于将从所述第一显示区域透射进来的光汇聚至所述反射镜,所述第二透镜用于将从所述第二显示区域透射进来的光汇聚至所述反射镜。
本公开中,透镜可以表示为由透光材料(诸如玻璃,水晶等)制成的表面为球面一部分的光学元件。
举例来讲,如图1所示,可以将第一透镜1051通过反射镜支撑件103设置在反射镜101与第一显示区域1001之间,并可以将反射镜101的靠近第一显示区域1001的入射面设置在第一透镜1051的焦平面的位置,以使得从第一显示区域1001透射进来的光1003 经由第一透镜1051汇聚至反射镜101,并经由反射镜101反射,照射到传感器102上。可以将第二透镜1052通过反射镜支撑件103设置在反射镜101与第一显示区域1001之间,并可以将反射镜101的靠近第二显示区域1002的入射面设置在第二透镜1052的焦平面的位置,以使得从第二显示区域1002透射进来的光经由第二透镜1052汇聚至反射镜101,并经由反射镜101反射,照射到传感器102上。
由于第一透镜和第二透镜具有聚光作用,第一透镜和第二透镜可以分别增加射入反射镜的光的强度,进而使得传感器根据汇聚后的光得到强度更大的电信号,产生更清晰的待识别图像,由此提高指纹识别的准确度。
作为本实施例的一个示例,所述反射镜可以包括第一反射棱镜和第二反射棱镜;从所述第一显示区域透射进来的光能够经第一反射棱镜的反射面反射后,照射在所述传感器上;从所述第二显示区域透射进来的光能够经第二反射棱镜的反射面反射后,照射在所述传感器上。
本公开中,棱镜可以表示为由两两相交但彼此均不平行的平面围成的透明光学元件。
举例来讲,如图1所示,第一反射棱镜1011可以包括第一入射面、第一反射面和第一出射面,其中,第一入射面可以平行于第一显示区域1001所在的平面,第一出射面可以垂直于第一显示区域1001所在的平面,传感器102的感光面可以平行于第一出射面。第一反射面可以分别与第一入射面和第一出射面之间形成第一锐角和第二锐角(例如,第一锐角和第二锐角均可以为45度),以使得从第一入射面射入的光1003,经第一反射面反射后,能够从第一出射面射出,并照射到传感器102上。
如图1所示,第二反射棱镜1012可以包括第二入射面、第二反射面和第二出射面,其中,第二入射面可以平行于第二显示区域1002所在的平面,第二出射面可以垂直于第二显示区域1002所在的平面,传感器102的感光面可以平行于第二出射面。第二反射面可以分别与第二入射面和第二出射面之间可以形成第三锐角和第四锐角(例如,第三锐角和第四锐角均可以为45度),以使得从第二入射面射入的光,经第二反射面反射后,能够从第二出射面射出,并照射到传感器102上。
其中,所述第一反射棱镜的反射面为平面或者凹面,和/或,所述第二反射棱镜的反射面为平面或者凹面。
图2是根据一示例性实施例示出的一种电子设备中反射镜与传感器的示意图。如图2所示,所述反射镜可以包括第一凹面镜1013和第二凹面镜1014;从所述第一显示区域1001透射进来的光1004经第一凹面镜1013的反射面反射后,照射在所述传感器102上;从所 述第二显示区域1002透射进来的光1005经第二凹面镜的反射面反射后,照射在所述传感器102上。
如图1和图2所示,第一凹面镜1013可以设置在如图1所示的电子设备中第一反光棱镜1011的位置,第一凹面镜1013可以包括第三入射面、第三反射面和第三出射面,其中,第三入射面可以平行于第一显示区域1001所在的平面,第三出射面可以垂直于第一显示区域1001所在的平面,传感器102的感光面可以平行于第三出射面。第三反射面可以为弧面,且第三反射面向远离传感器102的方向凸起,以使得从第三入射面射入的光1003,经第三反射面反射后,能够从第三出射面射出,并汇聚的照射到传感器102上。
如图1和图2所示,第二凹面镜1014可以设置如图1所示的在电子设备中第二反光棱镜1012的位置,第二凹面镜1014可以包括第四入射面、第四反射面和第四出射面,其中,第四入射面可以平行于第二显示区域1002所在的平面,第四出射面可以垂直于第二显示区域1002所在的平面,传感器102的感光面可以平行于第四出射面。第四反射面可以为弧面,且第四反射面向远离传感器102的方向凸起,以使得从第四入射面射入的光1003,经第四反射面反射后,能够从第四出射面射出,并汇聚的照射到传感器102上。
本公开中,相较于第一反射棱镜和第二反射棱镜,第一凹面镜和第二凹面镜能够使得反射光与入射光之间的夹角更大,即第一凹面镜和第二凹面镜能够分别将从第一显示区域和第二显示区域的光汇聚至更小的表面。通常来讲,双侧显示屏采用1:1镜射的反射棱镜所需传感器的感光面面积为单侧显示屏所需传感器感光面面积的两倍,相比之下,将第一凹面镜和第二凹面镜作为反射镜时,所需传感器的感光面面积更小,这样,有效减少了传感器的体积,进一步节省电子设备内部的空间,降低电子设备的成本。
在一种可能的实现方式中,如图1所示,所述显示屏100的外表面可以覆盖有透明盖板104。例如,若该显示屏100为环状显示屏100,则该透明盖板104可以为一体成型的扁筒状结构,可以将环状显示屏100粘贴于透明盖板104的内侧。该透明盖板可以具有较高的硬度(例如,较高的硬度可以为莫氏硬度大于7)以起到支撑和保护显示屏100的作用,并且具较高的透光率(例如,较高的透光率可以为透光率大于80%),使得该透明盖板104既无需开孔,又不影响显示屏100透射光线,且能够支撑保护显示屏100,进一步提高电子设备的密闭性和机械强度。
在一种可能的实现方式中,透明盖板的材质可以例如包括透明玻璃、透明硬质塑料等。
图3是根据一示例性实施例示出的一种电子设备的局部示意图。如图3所示,所述显示屏的内表面可以设置有显示屏支撑件300,所述显示屏支撑件300与反射镜103相对的 区域能够透射光线。
举例来讲,显示屏支撑件可以由透光材料制成(例如,透光材料可以包括透明玻璃,透明硬质塑料等),可以在电子设备的主板四周设置显示屏支撑件,并可以将显示屏覆盖在显示屏支撑件上。由于透光材料制成的显示屏支撑件可以较少遮挡从显示屏透射进来的光线,因而无需在显示屏支撑件与反射镜相对于的区域开孔,保持了显示屏支撑件的完整性,增加电子设备的机械强度。
举例来讲,如图3所示,显示屏支撑件300可以由非透光材料制成(例如,非透光材料可以包括,诸如铝、铝合金等金属材料,或非透明的硬质塑料等),可以在电子设备的主板106四周设置显示屏支撑件300,在显示屏支撑件300与反射镜103相对区域开设通孔3001,通孔能够透射光线。优选的,为了进一步增强设备的可靠性,可以在通孔3001中填充透光材料(例如透明玻璃、或透明硬质塑料等),并可以将显示屏100覆盖在显示屏支撑件300上。这样,无需将显示屏支撑件的主体材料限定在透光材料上,增加了显示屏支撑件主体材料的选择范围。
图4是根据一应用示例示出的电子设备的整体示意图。如图4所示,所述显示屏100可以包覆所述电子设备的前、后表面以及左、右侧面。
举例来讲,如图1所示,电子设备可以为手机,显示屏100可以为OLED环状显示屏。该显示屏可以环绕在手机主板106的四周,且显示屏100的外表面可以覆盖有透明盖板104。
显示屏100可以与在手机的一侧的主板106之间形成空隙,该空隙的横截面可以为半圆形或圆角矩形,可以将第一透镜1051、第二透镜1052、第一反射棱镜1011、第二反射棱镜1012和传感器102设置在该空隙中,其中,传感器102可以设置在手机该侧的主板106上,第一透镜1051、第二透镜1052、第一反射棱镜1011、第二反射棱镜1012可以通过反射镜支撑件103悬空架设在该空隙中。
第一透镜1051可以位于第一显示区域1001与第一反射棱镜1011之间,第一透镜1051的主光轴可以平行于第一显示区域1001所在的平面。第一反射棱镜1011可以包括第一入射面、第一反射面和第一出射面,第一入射面可以平行于第一显示区域1001所在的平面,并位于第一透镜1051的焦平面的位置。第一出射面可以垂直于第一显示区域1001所在的平面,传感器102的感光面可以平行于第一出射面。第一反射面可以对从第一入射面射入的光1003进行反射,使得反射光可以从第一出射面射出,并照射到传感器102的感光面上。
第二透镜1052可以位于第二显示区域1002与第一反射棱镜1011之间,第二透镜1052的主光轴可以平行于第二显示区域1002所在的平面。第二反射棱镜1012可以包括第二入射面、第二反射面和第二出射面,第二入射面可以平行于第二显示区域1002所在的平面,并位于第二透镜1052的焦平面的位置。第二出射面可以垂直于第二显示区域1002所在的平面,传感器102的感光面可以平行于第二出射面。第二反射面可以对从第二入射面射入的光1003进行反射,使得反射光可以从第二出射面射出,并照射到传感器102的感光面上。
在被测对象利用手机进行指纹识别时,被测对象可以将手指靠近或贴在手机的第一显示区域1001或第二显示区域1002中的任意一个显示区域。例如,如图1所示,被测对象可以将手指贴在第一显示区域1001,第一显示区域1001发射的光1003透过透明盖板104传播至手指后,被手指反射回来,透过透明盖板104传播回至显示屏100,并透过显示屏100的像素间的缝隙到达显示屏100下的第一透镜1051,经由第一透镜1051聚光后射入第一入射面,并被第一反射面反射后,从第一出射面射出,照射在传感器102的感光面上,传感器102可以根据接收到的光1003产生用于进行指纹识别的电信号,发送至手机的指纹识别芯片,以使指纹识别芯片根据该电信号得到被测对象的指纹识别结果。如此可利用单一传感器便可以达成双面指纹检测的功能,增加使用上的便利。
需要说明的是,在上述实施例中,第一透镜(第二透镜)的位置不仅限于第一反射镜(第二反射镜),例如,第一反射棱镜(第二反射棱镜)的前或后,第一透镜(第二透镜)的焦距、两凹面、来给你凹透镜的曲率能实现于传感器上成像即可。
需要说明的是,在上述实施例中,整个光学***的设计以能实现从位于不同面的显示区域透射进来的光经光学***后,照射在同一传感器为实现的前提,可以根据设备的具体形态或者显示区域所位于的具体的面的不同,对光学器件的类型、光学器件的光学参数、摆设位置、不同器件之间的相对位置关系等参数进行合适的调整。例如,上述的两透镜或者两棱镜之间可以是平行设置,或者,也可以设置为一定的夹角。
需要说明的是,本公开中,不仅限于电子设备的第一显示区域、第二显示区域透射进来的光经光学***后,照射在同一传感器,另外也可以包括位于更多面上的显示区域,例如第三显示区域,其位于与第一显示区域、第二显示区域所在面的不同面上,三个显示区域透射进来的光经光学***后,照射在同一传感器。通过对应各个显示区域分别配套设置一套光学***,例如,为第三显示区域设置第三透镜、第三反射棱镜(或第三凹面镜)。
可选的,当显示区域的分布位置适宜时,也可以为多个显示区域配套设置一套光学系 统,例如,相邻的显示区域(比如,手机的正面和左侧面)设置一套共用的光学***,这样,经该相邻的显示区域透射进来的光均可以经光学***后,照射在同一传感器。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由下面的权利要求指出。
应当理解的是,本公开并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。
Claims (10)
- 一种电子设备,其特征在于,包括:显示屏、反射镜和传感器,所述电子设备包括多个面,所述显示屏包括第一显示区域和第二显示区域,所述第一显示区域和所述第二显示区域分别位于所述电子设备的不同面,所述显示屏能够透射光线;所述反射镜和所述传感器设置在所述电子设备内部,从所述第一显示区域和所述第二显示区域透射进来的光经所述反射镜反射后,均能够照射在所述传感器上;所述传感器用于根据接收到的光产生用于进行指纹识别的电信号。
- 根据权利要求1所述的电子设备,其特征在于,所述电子设备内部还设置有第一透镜和第二透镜,所述第一透镜用于将从所述第一显示区域透射进来的光汇聚至所述反射镜,所述第二透镜用于将从所述第二显示区域透射进来的光汇聚至所述反射镜。
- 根据权利要求1所述的电子设备,其特征在于,所述反射镜包括第一反射棱镜和第二反射棱镜;从所述第一显示区域透射进来的光能够经第一反射棱镜的反射面反射后,照射在所述传感器上;和/或从所述第二显示区域透射进来的光能够经第二反射棱镜的反射面反射后,照射在所述传感器上。
- 根据权利要求3所述的电子设备,其特征在于,所述第一反射棱镜的反射面为凹面,和/或,所述第二反射棱镜的反射面为凹面。
- 根据权利要求1所述的电子设备,其特征在于,所述反射镜包括第一凹面镜和第二凹面镜;从所述第一显示区域透射进来的光能够经第一凹面镜的反射面反射后,照射在所述传感器上;和/或从所述第二显示区域透射进来的光能够经第二凹面镜的反射面反射后,照射在所述传感器上。
- 根据权利要求1至5任一项所述的电子设备,其特征在于,所述显示屏的外表面 覆盖有透明盖板,所述透明盖板能够透射光线。
- 根据权利要求1至5任一项所述的电子设备,其特征在于,所述显示屏的内表面设置有显示屏支撑件,所述显示屏支撑件与反射镜相对的区域能够透射光线。
- 根据权利要求7所述的电子设备,其特征在于,所述显示屏支撑件由透光材料制成。
- 根据权利要求7所述的电子设备,其特征在于,所述显示屏支撑件由非透光材料制成;所述显示屏支撑件与所述反射镜相对的区域开设通孔,所述通孔能够透射光线。
- 根据权利要求9所述的电子设备,其特征在于,所述通孔中填充有透光材料。
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