WO2018006475A1 - 光学指纹传感器模组 - Google Patents

光学指纹传感器模组 Download PDF

Info

Publication number
WO2018006475A1
WO2018006475A1 PCT/CN2016/095827 CN2016095827W WO2018006475A1 WO 2018006475 A1 WO2018006475 A1 WO 2018006475A1 CN 2016095827 W CN2016095827 W CN 2016095827W WO 2018006475 A1 WO2018006475 A1 WO 2018006475A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
light
fingerprint sensor
optical fingerprint
micro
Prior art date
Application number
PCT/CN2016/095827
Other languages
English (en)
French (fr)
Inventor
凌严
朱虹
Original Assignee
上海箩箕技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海箩箕技术有限公司 filed Critical 上海箩箕技术有限公司
Publication of WO2018006475A1 publication Critical patent/WO2018006475A1/zh

Links

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
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing

Definitions

  • the present invention relates to the field of optical fingerprint recognition, and in particular to an optical fingerprint sensor module.
  • Fingerprint imaging recognition technology is a technology that uses an optical fingerprint sensor to collect fingerprint images of the human body and then compares them with existing fingerprint imaging information in the system to determine whether it is correct or not, and thus realizes identity recognition. Due to the convenience of its use and the uniqueness of human fingerprints, fingerprint imaging recognition technology has been widely used in various fields. For example, security inspection departments such as the Public Security Bureau and the Customs, access control systems for buildings, and consumer goods such as personal computers and mobile phones. Fingerprint imaging recognition technology can be realized by various techniques such as optical imaging, capacitive imaging, and ultrasonic imaging. Relatively speaking, optical fingerprint imaging recognition technology has relatively good imaging effect and relatively low equipment cost.
  • the structure of the existing optical fingerprint sensor module needs to be improved, and the performance needs to be improved.
  • the problem solved by the present invention is to provide an optical fingerprint sensor module to optimize the structure of the optical fingerprint sensor module and improve the performance of the optical fingerprint sensor module.
  • the present invention provides an optical fingerprint sensor module, including: an optical fingerprint sensor; a planar backlight; the optical fingerprint sensor has one and only one transparent a light substrate; the first surface of the transparent substrate is directly used for finger fingerprint contact; the second surface of the transparent substrate has a device layer; the device layer has a pixel region; and the pixel region has a plurality of pixels; Each of the pixels has a light transmissive area and a non-transmissive area; the non-transparent area has a photosensitive element; the transparent area enables light to pass through the pixel area of the device layer; the planar backlight Located below the device layer, the exiting light of the planar backlight passes through the device layer from the light transmissive region and enters the transparent substrate.
  • one of the pixels further includes a light shielding layer, the photosensitive element is located between the light shielding layer and the light transmissive substrate, and the light shielding layer is located between the photosensitive element and the planar backlight.
  • the optical fingerprint sensor and the planar backlight further comprise at least one of a light collecting layer and a light collimating layer, wherein the light collecting layer and the light collimating layer make an angular range of transmitted light. Become smaller.
  • the light collecting layer is included between the optical fingerprint sensor and the planar backlight, and the light collecting layer comprises a base layer and a plurality of micro convex lens units, wherein the micro convex lens unit is located at the base layer At least one of an upper surface and a lower surface.
  • the micro convex lens unit is located on an upper surface of the base layer, the lower surface of the base layer is flat, and a lower surface of the base layer is attached to an upper surface of the planar backlight; or
  • the convex lens unit is located on a lower surface of the base layer, the upper surface of the base layer is flat, and an upper surface of the base layer is attached to a bottom surface of the optical fingerprint sensor.
  • the concentrating layer further comprises a filling layer; the micro convex lens unit is located on an upper surface of the base layer, the lower surface of the base layer is flat, and the filling layer will have the micro convex lens unit The upper surface of the base layer is filled flat; or the micro convex lens unit is located on the lower surface of the base layer, the upper surface of the base layer is flat, and the filling layer will have the lower surface of the base layer of the micro convex lens unit Filling in; or, the micro-convex lens unit is located on an upper surface and a lower surface of the base layer, and the filling layer fills the upper surface and the lower surface of the base layer having the micro-convex lens unit.
  • the shape of the micro convex lens unit is an ellipsoid crown shape, a spherical crown shape, and a conical shape. Or pyramidal; the size of the micro-convex lens unit is smaller than the size of the pixel; and the refractive index of the filling layer is smaller than the refractive index of the micro-convex lens unit.
  • the light collecting layer is included between the optical fingerprint sensor and the planar backlight, and the light collecting layer comprises a flat layer and a plurality of micro convex lens units distributed in the flat layer.
  • the shape of the micro-convex lens unit is an ellipsoidal crown shape, a spherical crown shape, a conical shape or a pyramid shape; a size of the micro convex lens unit is smaller than a size of the pixel; and a refractive index of the flat layer is smaller than The refractive index of the micro-convex lens unit.
  • the optical collimating layer is included between the optical fingerprint sensor and the planar backlight, and the light collimating layer has a light shielding frame and a plurality of light transmission holes uniformly distributed in the light shielding frame.
  • the light collimating layer is a single layer structure or a multi-layer structure; when the light collimating layer is a single layer structure, the light collimating frame includes a plurality of light shielding holes; and when the light collimating layer is In the multilayer structure, each layer structure includes a light shielding frame and a plurality of light transmission holes, and the light transmission holes between the different layers overlap each other.
  • the area of the light transmission hole is smaller than the area of the pixel, and the ratio of the hole height to the diameter of the light transmission hole is greater than 1.
  • At least one of the first surface and the second surface of the transparent substrate has a filter layer.
  • the optical fingerprint sensor includes only one transparent substrate.
  • the light emitted by the planar backlight only needs to pass through the device layer when passing through the optical fingerprint sensor.
  • a light-transmissive substrate therefore, the light passes through fewer substrates, helping to form a clear fingerprint image.
  • the optical fingerprint sensor since the optical fingerprint sensor has a simple structure and a reduced thickness, the structure of the optical fingerprint sensor module is simplified, and the cost is reduced.
  • the light reaching the first surface of the transparent substrate increases, and the entire optical fingerprint sensor module can be more accurate. The recognition of the fingerprint image is realized, the definition of the fingerprint image is further improved, and the structure of the optical fingerprint sensor module is further simplified, and the cost is reduced.
  • At least one of a light collecting layer and a light collimating layer is further included between the optical fingerprint sensor and the planar backlight.
  • a concentrating layer and/or a light collimating layer between the optical fingerprint sensor and the planar backlight, the direction of the light emitted from the planar backlight can be adjusted by the concentrating layer and/or the light collimating layer. So that a large amount of light is incident on the protective layer in a small angular range, and the angle between the corresponding angular range and the upper surface of the protective layer is close to a right angle, thereby reducing the angle due to the large angle of incidence. The reflected light interferes with each other, and ensures that the reflected light is irradiated to the pixel closer to the reflection point thereof, thereby improving the definition and accuracy of the fingerprint image formed by the optical fingerprint sensor module.
  • the concentrating layer comprises a base layer and a plurality of micro convex lens units, and the shape of the micro convex lens unit is an ellipsoidal crown shape.
  • the micro convex lens unit is located on the surface of the base layer.
  • the micro convex lens unit has a good concentrating effect and uniform convergence light.
  • the light collecting layer includes a flat layer and a plurality of micro convex lens units distributed in the flat layer.
  • the micro convex lens unit is an ellipsoidal crown shape.
  • the flat layer encloses the micro-convex lens unit inside, and the upper surface and the lower surface of the flat layer are flat, and the upper and lower surfaces of the concentrating layer are flat, which is more advantageous for assembly with other structures.
  • a light collimating layer is disposed between the optical fingerprint sensor and the planar backlight, and the light collimating layer has a light shielding frame and a plurality of light transmission holes uniformly distributed in the light shielding frame.
  • the light collimating layer can achieve the effect of light collimation.
  • a large amount of light is incident on the protective layer in a small angular range, and the angle between the corresponding angular range and the upper surface of the protective layer is close to a right angle, thereby reducing the angle of view due to a large angle of incidence.
  • the mutual interference of the reflected light ensures that the reflected light is irradiated to the pixel closer to the reflection point thereof, thereby improving the definition and accuracy of the fingerprint image formed by the optical fingerprint sensor module.
  • FIG. 1 is a cross-sectional view of an optical fingerprint sensor module according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional structural view of an optical fingerprint sensor module according to a second embodiment of the present invention.
  • FIG. 3 is a cross-sectional structural view of an optical fingerprint sensor module according to a third embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a concentrating layer in the optical fingerprint sensor module shown in FIG. 3;
  • FIG. 5 is a schematic structural view of a light collecting layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 6 is a schematic structural view of another concentrating layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 7 is a schematic structural view of another concentrating layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 8 is a schematic structural view of another concentrating layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 9 is a schematic structural view of another concentrating layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 10 is a schematic view showing another structure of a light collecting layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 11 is a schematic structural view of another concentrating layer in the optical fingerprint sensor module shown in FIG. 3 in another embodiment
  • FIG. 12 is a cross-sectional structural view of an optical fingerprint sensor module according to a fourth embodiment of the present invention.
  • FIG. 13 is a schematic view of a light collimating layer of the optical fingerprint sensor module shown in FIG.
  • an existing optical fingerprint sensor it is generally required to include a light-transmitting substrate and a protective layer. This structure inevitably results in a larger thickness of the entire optical fingerprint sensor. The larger thickness also causes the light emitted by the light source to reach the photosensitive element after a long optical path, resulting in the quality of the captured fingerprint image cannot be further improved.
  • the present invention provides a new optical fingerprint sensor module.
  • the protective layer is omitted, thereby not only reducing the thickness of the optical fingerprint sensor module, but also improving the quality of the formed fingerprint image.
  • the first embodiment of the present invention provides an optical fingerprint sensor module. Please refer to FIG. 1 .
  • the optical fingerprint sensor module includes an optical fingerprint sensor 110 and a planar backlight 120.
  • the optical fingerprint sensor 110 has one and only one light transmissive substrate 111.
  • the first surface (not labeled) of the light transmissive substrate 111 is directly used for finger fingerprint contact.
  • the second surface (not labeled) of the light transmissive substrate 111 has a device layer 112.
  • the first surface is an upper surface of the transparent substrate 111
  • the second surface is a lower surface of the transparent substrate 111.
  • the device layer 112 has a pixel area.
  • the pixel area has a plurality of pixels.
  • Each of the pixels has a light transmissive area and a non-transparent area.
  • the non-transparent region has a photosensitive element.
  • the light transmissive region enables light to pass through the pixel region of the device layer 112.
  • the planar backlight 120 is located under the device layer 112 , and the outgoing light of the planar backlight 120 passes through the device layer 112 from the light transmissive region and enters the transparent substrate 111 .
  • the planar backlight 120 includes a point light source 121 and a light guide plate 122 (ie, the planar backlight 120 is composed of the point light source 121 and the light guide plate 122).
  • the point light source is an LED light.
  • planar backlight may also be directly autonomously illuminated.
  • the light source structure area array structure
  • the light source structure is, for example, an organic light emitting diode surface light source or an electroluminescence surface light source.
  • the point source may also be other suitable sources of light, such as fluorescent lamps.
  • the point light source 121 is disposed outside one of the side faces of the light guide plate 122.
  • the light emitted from the point light source 121 is irradiated into the light guide plate 122 within a certain divergence angle.
  • the point light source can also be embedded within the light guide plate.
  • the thickness T1 of the transparent substrate 111 may be 0.4 cm or less, the transparent substrate 111 is too thin, and the mechanical strength is poor, and the reliability of the optical fingerprint sensor 110 cannot be ensured.
  • the transparent substrate 111 is too thick, and the thickness of the entire optical fingerprint sensor module is increased to cause various adverse effects.
  • the thickness (not labeled) of the device layer 112 may be from 0.5 ⁇ m to 5 ⁇ m.
  • Device layer 112 is too thin and device performance within device layer 112 is not critical.
  • the device layer 112 is too thick, and the prior art process cannot produce a device of corresponding performance. If the process is improved, the thickness of the corresponding device layer 112 can be further reduced.
  • one pixel further includes a light shielding layer, the photosensitive element is located between the light shielding layer and the transparent substrate 111, and the light shielding layer is located between the photosensitive element and the planar backlight. Between 120. Since the light shielding layer is disposed at the corresponding position, the photosensitive element can only receive the light signal entering the device layer 112 from the transparent substrate 111, and the emitted light of the planar backlight 120 cannot be directly irradiated from below the device layer 112. The photosensitive element.
  • At least one of the first surface and the second surface of the light transmissive substrate may have a filter layer.
  • the filter layer may include at least one of an interference reflective layer and a light absorbing layer.
  • the interference emitting layer can increase the difference of the reflected light between the finger and the fingerless, thereby increasing the image contrast and reducing the interference of the ambient light on the fingerprint image, so as to reduce the influence of the ambient light on the fingerprint imaging.
  • the optical fingerprint sensor 110 Only one transparent substrate 111 is included. At this time, the light emitted by the planar backlight 120 only needs to pass through the device layer 112 and the transparent substrate 111 when passing through the optical fingerprint sensor 110. Therefore, the light passes through the substrate less. Helps to form a clear fingerprint image. At the same time, since the optical fingerprint sensor 110 has a simple structure and a reduced thickness, the structure of the optical fingerprint sensor module is simplified, and the cost is reduced.
  • the entire optical fingerprint sensor module can more accurately realize the identification of the fingerprint image, thereby further improving The sharpness of the fingerprint image and further simplify the structure of the optical fingerprint sensor module, reducing the cost.
  • a second embodiment of the present invention provides another optical fingerprint sensor module. Please refer to FIG. 2 .
  • the optical fingerprint sensor module includes an optical fingerprint sensor 210 and a planar backlight 220.
  • the optical fingerprint sensor 210 has one and only one light transmissive substrate 211.
  • the first surface (not labeled) of the light transmissive substrate 211 is directly used for finger fingerprint contact.
  • the second surface (not labeled) of the light transmissive substrate 211 has a device layer 212.
  • the first surface is an upper surface of the transparent substrate 211
  • the second surface is a lower surface of the transparent substrate 211.
  • the device layer 212 has a pixel region.
  • the pixel area has a plurality of pixels.
  • Each of the pixels has a light transmissive area and a non-transparent area.
  • the non-transparent region has a photosensitive element.
  • the light transmissive region enables light to pass through the pixel region of the device layer 212.
  • the planar backlight 220 is located below the device layer 212, and the outgoing light of the planar backlight 220 passes through the device layer 212 from the light transmitting region and then enters the transparent substrate 211.
  • the planar backlight 220 includes a point light source 221 and a light guide plate 222, and the point light source is an LED lamp.
  • the point light source 221 is disposed outside one of the side faces of the light guide plate 222. The light emitted from the point light source 221 is irradiated into the light guide plate 222 within a certain divergence angle.
  • a light collecting layer 230 is further included between the optical fingerprint sensor 210 and the planar backlight 220.
  • the light collecting layer 230 can cause the direction of the light emitted from the light guide plate 222 to occur Change, the light originally distributed in a larger angular range is adjusted to light distributed in a smaller angular range, that is, the concentrating layer 230 can also concentrate the light as concentrated as possible, so that most of the light is as perpendicular as possible to the first surface Or close to a vertical relationship. Therefore, after the concentrating layer 230 is disposed, the embodiment reduces the reflected light of different angles due to the large incident angle range, and ensures that the reflected light is irradiated to the pixel closer to the incident light, thereby improving the optical. The sharpness and accuracy of the fingerprint image formed by the fingerprint sensor module.
  • the light concentrating layer 230 may be replaced by a light collimating layer.
  • the light collimating layer can selectively pass the light emitted by the light guide plate through the light collimating layer, and only the direction is relatively vertical upward (the direction is relatively vertical upwards means that the direction of the light will form a larger clip with the upper surface of the subsequent protective layer).
  • the light of the corner can pass through the light collimation layer. Therefore, similarly, setting the light collimating layer not only reduces the reflected light generated between the incident light due to the large incident angle range, but also ensures that the reflected light is irradiated to the pixel closer to the incident light thereof, thereby improving the optical.
  • the sharpness and accuracy of the fingerprint image formed by the fingerprint sensor module can selectively pass the light emitted by the light guide plate through the light collimating layer, and only the direction is relatively vertical upward (the direction is relatively vertical upwards means that the direction of the light will form a larger clip with the upper surface of the subsequent protective layer).
  • the light of the corner
  • the optical fingerprint sensor and the light guide plate may also include a light collecting layer and a light collimating layer.
  • the thickness T2 of the transparent substrate 211 can be up to 5 cm, and the transparent substrate 211 is thick, which can improve the mechanical strength.
  • optical fingerprint sensor module For more details about the structure and properties of the optical fingerprint sensor module provided in this embodiment, reference may be made to the corresponding content of the optical fingerprint sensor module provided in the foregoing embodiment.
  • a third embodiment of the present invention provides another optical fingerprint sensor module. Please refer to FIG. 3.
  • the optical fingerprint sensor module includes an optical fingerprint sensor 310 and a planar backlight 320.
  • the optical fingerprint sensor 310 has one and only one light transmissive substrate 311.
  • the first surface (not labeled) of the light transmissive substrate 311 is directly used for finger fingerprint contact.
  • the second surface (not labeled) of the light transmissive substrate 311 has a device layer 312. In FIG. 3 , the first surface is an upper surface of the transparent substrate 311 , and the second surface is a lower surface of the transparent substrate 311 .
  • the device layer 312 has a pixel area.
  • the pixel area There are multiple pixels.
  • Each of the pixels has a light transmissive area and a non-transparent area.
  • the non-transparent region has a photosensitive element.
  • the light transmissive region enables light to pass through the pixel region of the device layer 312.
  • the planar backlight 320 is located below the device layer 312, and the outgoing light of the planar backlight 320 passes through the device layer 312 from the light transmitting region and then enters the transparent substrate 311.
  • the planar backlight 320 includes a point light source 321 and a light guide plate 322, and the point light source is an LED lamp.
  • the point light source 321 is disposed outside one of the side faces of the light guide plate 322.
  • the light emitted from the point light source 321 is irradiated into the light guide plate 322 within a certain divergence angle.
  • the light emitted by the dot backlight 321 is as shown by the thick black one-way arrow in FIG.
  • the light guide plate 322 has a hemispherical or semi-ellipsoidal small bump 3221 on the back.
  • the bottom (lower surface) and the other side (outer surface) of the light guide plate 322 also have a reflective film (not shown in FIG. 3), and when the light reaches the back surface or other side of the light guide plate 322, most of the light is reapplied by the reflective film. It is reflected back to the light guide plate 322 so as to be directly emitted in the upward direction or continuously scattered by the small bumps 3221 to the upward direction.
  • the light scattered by the light guide plate 322 is shown by a thin black one-way arrow in FIG.
  • the light guide plate 322 may also have other structures (such as adding a diffusion film or the like on the light guide plate 322), and it is only necessary to ensure that the light guide plate 322 uniformly disperses the light emitted by the corresponding point light source and emits it upward.
  • FIG. 3 specifically shows two pixels in the pixel area, which are respectively a pixel X1 and a pixel X2, and both the pixel X1 and the pixel X2 have a non-transparent area (not labeled) and a transparent area (not labeled) ).
  • the side length dimension of the pixel X1 and the pixel X2 (the planar shape of the pixel is a rectangle) may be 30 ⁇ m to 100 ⁇ m.
  • the side lengths of the pixels X1 and X2 are too small to make corresponding circuit devices in the area occupied by the pixels, and the amount of data of the image is also increased.
  • the side lengths of the pixels X1 and X2 are too large, and the resolution of the corresponding fingerprint image is lowered. Since the size of the human fingerprint is generally about 200 ⁇ m, it is possible to select about 50 ⁇ m in consideration of comprehensive consideration.
  • a light collecting layer 330 is further included between the optical fingerprint sensor 310 and the planar backlight 320.
  • the optical fingerprint sensor 310 and the concentrating layer 330 can be pasted by optical glue, and the planar backlight 320 and the concentrating layer 330 can also be pasted by optical glue.
  • the optical glue can minimize the possibility of light passing through the air during the propagation process, thereby reducing the risk of multiple reflections and scattering of the light, and further improving the sharpness of the fingerprint image formed by the optical fingerprint sensor module.
  • FIG. 4 separately shows a concentrating layer 330a, that is, the concentrating layer 330a in FIG. 4 is a specific structure of the concentrating layer 330 in FIG.
  • the light collecting layer 330a has a base layer a1 and a plurality of micro convex lens units a2.
  • the shape of the micro-convex lens unit a2 is an ellipsoidal crown shape.
  • the micro-convex lens unit a2 is located on the lower surface of the base layer a1.
  • the upper surface of the base layer a1 is attached to the bottom surface of the optical fingerprint sensor.
  • the micro-convex lens unit a2 has a concentrating effect, and from a stereoscopic point of view, from the middle to the edge, the thickness is gradually thinned to achieve a concentrating effect.
  • the ellipsoidal structure of the micro-convex lens unit a2 is the best for collecting light, and the concentrated light formed is also the most uniform.
  • the micro-convex lens unit may have other shapes, such as a spherical crown, a cone, or a pyramid. In other embodiments, the micro-convex lens unit may also be located on an upper surface of the base layer.
  • the micro convex lens unit a2 has a diameter of 1 ⁇ m to 100 ⁇ m. If the diameter of the micro-convex lens unit a2 is too small, the condensing effect is poor, and it is difficult to manufacture. The diameter of the micro-convex lens unit a2 is too large, and the uniformity of collecting light is poor.
  • the present embodiment controls such that the area of the micro-convex lens unit a2 is smaller than the area of the pixel, and such that at least one micro-convex lens unit a2 is required under each pixel (the bottom diameter of the micro-convex lens unit a2 is required to be smaller than the width of the pixel, and the micro-convex lens unit a2 The height is also less than the pixel width). In this way, the backlight of each pixel will be uniform. On the other hand, if the area of the micro-convex lens unit a2 is larger than the area of the pixel, a case where one micro-convex lens unit a2 covers a plurality of pixels may occur. Then, the light received by each pixel directly above the micro convex lens unit a2 is different. Can not do each The backlight of the pixel is the same, resulting in uneven imaging of the final image.
  • the backlight emitted by the light guide plate 3221 is not an ideal one-point light source.
  • the focal length of each of the micro-convex lens units a2 may also differ. However, as long as a part of the light in the backlight is equivalent to a point light source and is focused by the micro convex lens unit a2, this part of the light is parallel light or near parallel light (near parallel light), and a better image can be realized. Other parts of the light that are not focused in parallel or near parallel are a background noise of the image. The ratio of the two will affect the image signal-to-noise ratio. As long as the signal-to-noise ratio is higher than a certain value, the image will meet the requirements.
  • the near-parallel light refers to a maximum angular difference between all light rays within 10 degrees.
  • the concentrating layer 330 is a concentrating layer 330b
  • the concentrating layer 330b has a base layer b1 and a plurality of micro convex lens units b2, and a micro convex lens
  • the shape of the unit b2 is also an ellipsoidal crown shape, except that the micro-convex lens unit b2 is simultaneously located on the upper surface and the lower surface of the base layer b1.
  • FIG. 6 Another specific structure of the concentrating layer 330 is a concentrating layer 330c.
  • the concentrating layer 330c has a base layer c1 and a plurality of micro convex lens units c2, the difference being
  • the micro-convex lens unit c2 has a pyramidal shape (may be a triangular pyramid or a quadrangular pyramid or the like, but is shown as a triangle in the cross section shown in FIG. 6, and may also be a conical shape in other embodiments), and the micro convex lens unit c2 is located only.
  • the lower surface of the base layer c1 is flat, and the lower surface of the base layer c1 can be bonded to the bottom surface of the optical fingerprint sensor. Of course, the lower surface of the base layer c1 can be bonded to the top surface of the light guide plate 3221.
  • the concentrating layer 330 is a concentrating layer 330 d having a basal layer d1 and a plurality of micro convex lens units d2 .
  • the concentrating layer 330d further includes a filling layer d3.
  • the filling layer d3 fills the lower surface of the base layer 471d having the micro convex lens unit d2, that is, the filling layer d3 is located on both sides of the micro convex lens unit d2, and can cover the entire micro convex lens unit d2, thereby making the whole
  • the light collecting layer 330 has a flat surface.
  • another specific structure of the light collecting layer 330 is a light collecting layer 330 e having a base layer e1 and a plurality of micro convex lens units e2 .
  • the concentrating layer 330e further includes a filling layer e3.
  • the micro-convex lens unit e2 is located on the upper surface and the lower surface of the base layer e1.
  • the filling layer e3 fills both the upper surface and the lower surface of the base layer e1 having the micro convex lens unit.
  • the upper and lower surfaces of the entire light collecting layer 330e are flat, which is more advantageous for assembly with other structures.
  • the concentrating layer 330 is a concentrating layer 330 f
  • the concentrating layer 330 f has a base layer f1 and a plurality of micro convex lens units f2 .
  • the concentrating layer 330f further includes a filling layer f3.
  • the micro-convex lens unit f2 is pyramidal, and the micro-convex lens unit f2 is located on the upper surface of the base layer f1.
  • the filling layer f3 fills the upper surface of the base layer f1 having the micro-convex lens unit f2. After the filling layer f3 fills the upper surface of the base layer f1 having the micro convex lens unit f2, the upper and lower surfaces of the entire light collecting layer are flat, which is more advantageous for assembly with other structures.
  • each of the micro-convex lens units can function as a condensing light, so that the light distributed over a wide range of angles emitted from the light guide plate 3221 can be collected into light of a small angle range, thereby facilitating optics.
  • the fingerprint sensor module forms a clear fingerprint image.
  • each of the filling layers is made of a material having a lower refractive index (ie, the refractive index of the material of the filling layer is smaller than the refractive index of the material of the micro convex lens unit), thereby ensuring the respective light collecting layers.
  • each of the micro-convex lens units sufficiently exhibits a condensing action.
  • the concentrating layer 330 includes a flat layer g2 and a plurality of micro-distributions distributed in the flat layer g2.
  • the micro-convex lens unit g1 in FIG. 10 has a pyramidal shape (specifically, a triangular pyramid or a quadrangular pyramid or the like).
  • the flat layer g2 encloses the micro-convex lens unit g1 inside thereof, and the upper surface and the lower surface of the flat layer g2 are flat, and the upper and lower surfaces of the entire light-concentrating layer are flat, which is more advantageous for assembly with other structures.
  • FIG. 11 another specific structure of the concentrating layer 330 is a concentrating layer 330 h.
  • the concentrating layer 330 h includes a flat layer h2 and a plurality of micro-distributions distributed in the flat layer h2.
  • the micro convex lens unit h1 in FIG. 11 is an ellipsoidal crown shape (in other embodiments, it may be a spherical crown shape or other shapes).
  • the flat layer h2 wraps the micro convex lens unit h1 inside thereof, and the upper surface and the lower surface of the flat layer h2 are flat, and the upper and lower surfaces of the light collecting layer are flat, which is more advantageous for assembly with other structures.
  • each of the micro-convex lens units can function to collect light, thereby collecting light of a wide angular range emitted from the light guide plate 3221 into light of a small angle range, thereby It is beneficial for the optical fingerprint sensor module to form a clear fingerprint image.
  • the flat layer is also made of a material having a lower refractive index (ie, the refractive index of the material of the flat layer is smaller than the refractive index of the material of the micro convex lens unit), thereby ensuring that each of the light collecting layers is Each of the micro-convex lens units sufficiently exhibits a condensing action.
  • the light collecting layer is disposed between the optical fingerprint sensor and the planar backlight, so that the direction of the light emitted from the planar backlight can be concentrated.
  • the adjustment of the light layer causes a large amount of light to reach the first surface of the transparent substrate 311 with a small angular range, and an angle between the corresponding angular range and the first surface is close to a right angle, thereby Reducing the reflected light generated between the incident light due to the large incident angle range, and ensuring that the reflected light is irradiated to the pixel closer to the incident light thereof, thereby improving the clarity of the fingerprint image formed by the optical fingerprint sensor module. degree.
  • optical fingerprint sensor module For more details about the structure and properties of the optical fingerprint sensor module provided in this embodiment, reference may be made to the corresponding content of the optical fingerprint sensor module provided in the foregoing embodiment.
  • a fourth embodiment of the present invention provides another optical fingerprint sensor module. Please refer to FIG.
  • the optical fingerprint sensor module includes an optical fingerprint sensor 410 and a planar backlight Source 420.
  • the optical fingerprint sensor 410 has one and only one light transmissive substrate 411.
  • the first surface (not labeled) of the light transmissive substrate 411 is directly used for finger fingerprint contact.
  • the second surface (not labeled) of the light transmissive substrate 411 has a device layer 412. In FIG. 12, the first surface is an upper surface of the transparent substrate 411, and the second surface is a lower surface of the transparent substrate 411.
  • the device layer 412 has a pixel region.
  • the pixel area has a plurality of pixels.
  • Each of the pixels has a light transmissive area and a non-transparent area.
  • the non-transparent region has a photosensitive element.
  • the light transmissive region enables light to pass through the pixel region of the device layer 412.
  • the planar backlight 420 is located below the device layer 412, and the outgoing light of the planar backlight 420 passes through the device layer 412 from the light-transmitting region and enters the transparent substrate 411.
  • the planar backlight 420 includes a point light source 421 and a light guide plate 422, and the point light source is an LED lamp.
  • the point light source 421 is disposed outside one of the side faces of the light guide plate 422.
  • the light emitted from the point light source 421 is irradiated into the light guide plate 422 within a certain divergence angle.
  • the light emitted by the dot backlight 421 is as shown by the thick black one-way arrow in FIG.
  • the light guide plate 422 has a hemispherical or semi-ellipsoidal small bump 4221 on the back.
  • the bottom (lower surface) and the other side (outer surface) of the light guide plate 422 also have a reflective film (not shown in FIG. 12), and when the light reaches the back surface or other side of the light guide plate 422, most of the light is reapplied by the reflective film. It is reflected back to the light guide plate 422 so as to be directly emitted in the upward direction or continuously scattered by the small bumps 4221 to the upward direction.
  • the light scattered by the light guide plate 422 is shown by a thin black one-way arrow in FIG.
  • FIG. 12 specifically shows two pixels, which are respectively a pixel Y1 and a pixel Y2, and both the pixel Y1 and the pixel Y2 have a non-transparent area (not labeled) and a light-transmitting area (not labeled).
  • the side length dimension of the pixel Y1 and the pixel Y2 (the planar shape of the pixel is a rectangle) may be 40 ⁇ m to 100 ⁇ m, and specifically may be selected to be about 50 ⁇ m.
  • a light collimating layer 430 is further included between the optical fingerprint sensor 410 and the planar backlight 420.
  • the optical fingerprint sensor module there may be an optical glue layer between the optical fingerprint sensor 410 and the light collimating layer 430, thereby preventing the presence of an air layer.
  • the optical adhesive layer is as thin as possible and can generally be arranged from 2 ⁇ m to 200 ⁇ m.
  • the optical alignment layer 430 and the light guide plate 422 may also have an optical adhesive layer.
  • the light collimating layer 430 has a light shielding frame 432 and a plurality of light transmission holes 431 uniformly distributed in the light shielding frame 432 .
  • the oblique light is irradiated into the light transmission hole, it is absorbed by the light shielding frame 432. Therefore, only light having a relatively vertical upward angle is allowed to pass, so that the light collimating layer 430 can achieve the effect of light collimation.
  • the light collimating layer 430 has a single layer structure.
  • the area of the light transmission hole 431 is smaller than the area of the pixel.
  • the size of the light-transmissive aperture 431 must be smaller than the area of the pixel.
  • the diameter of the light transmission hole 431 is constant, at least one small hole of each pixel is satisfied, the larger the distance between the adjacent light transmission holes 431 is, the smaller the number of the light transmission holes 431 is. Then, the lower the light utilization rate, the smaller the actual signal, and therefore, under certain circumstances, the distance between the light-transmitting holes 431 can be minimized.
  • the ratio of the hole height H to the diameter D of the light transmission hole 431 is greater than 1, that is, in FIG. 13, H: D>1.
  • H:D the better the parallel effect of the light passing through the light collimating layer, but the less light that can be transmitted.
  • the overall thickness of the light collimating layer 430 may be 10 ⁇ m to 10000 ⁇ m.
  • the overall thickness of the light collimating layer 430 is controlled within the above range, that is, it can ensure corresponding light collimation, and at the same time prevent the entire optical fingerprint sensor module from being too thick.
  • the light-transmitting hole 431 can be air, vacuum or a light-transmissive medium, and only the light-transmitting hole 431 can transmit the corresponding light.
  • the light transmission hole 431 is inside When it is a vacuum or a light-transmissive medium, it is more conducive to the transmission of light.
  • the light collimating layer may also be a multilayer structure.
  • each of the layers includes a light shielding frame 432 and a plurality of light transmission holes 431, and the light transmission holes 431 between the different layers overlap each other.
  • the overall thickness of the light collimating layer is from 10 ⁇ m to 10000 ⁇ m.
  • the refractive index of the optical adhesive layer and the optical fingerprint sensor may be made as close as possible.
  • the refractive index of the three-layer structure can be made around 1.5.
  • each of the above embodiments achieves that the light reaches the first surface of the transparent substrate 411 perpendicularly or nearly perpendicularly (ie, the direction of the light is at right angles or near a right angle to the direction of the upper surface of the protective layer).
  • the above angle may be appropriately reduced, for example, 70 degrees. Or 50 degrees, etc., but make sure that the angles of all incident light are not much different.
  • the angle is vertical, the corresponding imaging pixel of the fingerprint is directly below the fingerprint. If the incident light maintains a tilt angle, all the imaging pixels are offset by a certain distance from the corresponding fingerprint, but the image clarity and accuracy are not significantly affected. influences.
  • optical fingerprint sensor module For more details about the structure and properties of the optical fingerprint sensor module provided in this embodiment, reference may be made to the corresponding content of the optical fingerprint sensor module provided in the foregoing embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Image Input (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

一种光学指纹传感器模组，包括：光学指纹传感器（110、210、310、410）；面状背光源（120、220、320、420）；光学指纹传感器（110、210、310、410）有且只有一个透光基板（111、211、311、411）；透光基板（111、211、311、411）的第一表面直接用于手指指纹接触；透光基板（111、211、311、411）的第二表面具有器件层（112、212、312、412）；器件层（112、212、312、412）具有像素区；像素区具有多个像素（X1、X2、Y1、Y2）；每个像素（X1、X2、Y1、Y2）具有透光区域和非透光区域；非透光区域具有感光元件；透光区域使光线能够透过器件层（112、212、312、412）的像素区；面状背光源（120、220、320、420）位于器件层（112、212、312、412）下方，面状背光源（120、220、320、420）的出射光从透光区域穿过器件层（112、212、312、412），再进入透光基板（111、211、311、411）。使得光学指纹传感器模组结构优化，性能提高。

Description

光学指纹传感器模组
本申请要求于2016年07月08日提交中国专利局、申请号为201610536745.9、发明名称为“光学指纹传感器模组”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及光学指纹识别领域，尤其涉及一种光学指纹传感器模组。
背景技术
指纹成像识别技术，是通过光学指纹传感器采集到人体的指纹图像，然后与系统里的已有指纹成像信息进行比对，来判断正确与否，进而实现身份识别的技术。由于其使用的方便性，以及人体指纹的唯一性，指纹成像识别技术已经大量应用于各个领域。比如公安局和海关等安检领域、楼宇的门禁系统、以及个人电脑和手机等消费品领域等等。指纹成像识别技术的实现方式有光学成像、电容成像、超声成像等多种技术。相对来说，光学指纹成像识别技术成像效果相对较好，设备成本相对较低。
更多有关光学指纹传感器的内容可参考公开号为CN204759454U的中国实用新型专利。
现有光学指纹传感器模组的结构有待改进，性能有待提高。
发明内容
本发明解决的问题是提供一种光学指纹传感器模组，以优化光学指纹传感器模组的结构，提高光学指纹传感器模组的性能。
为解决上述问题，本发明提供一种光学指纹传感器模组，包括：光学指纹传感器；面状背光源；所述光学指纹传感器有且只有一个透 光基板；所述透光基板的第一表面直接用于手指指纹接触；所述透光基板的第二表面具有器件层；所述器件层具有像素区；所述像素区具有多个像素；每个所述像素具有透光区域和非透光区域；所述非透光区域具有感光元件；所述透光区域使光线能够透过所述器件层的所述像素区；所述面状背光源位于所述器件层下方，所述面状背光源的出射光从所述透光区域穿过所述器件层，再进入所述透光基板。
可选的，一个所述像素还包括遮光层，所述感光元件位于所述遮光层与所述透光基板之间，所述遮光层位于所述感光元件与所述面状背光源之间。
可选的，所述光学指纹传感器和所述面状背光源之间还包括聚光层和光准直层中的至少一层，所述聚光层和光准直层使透过的光的角度范围变小。
可选的，所述光学指纹传感器和所述面状背光源之间包括所述聚光层，所述聚光层包括基底层和多个微凸透镜单元，所述微凸透镜单元位于所述基底层上表面和下表面的至少其中之一。
可选的，所述微凸透镜单元位于所述基底层上表面，所述基底层下表面平坦，所述基底层的下表面与所述面状背光源的上表面贴合；或者，所述微凸透镜单元位于所述基底层下表面，所述基底层上表面平坦，所述基底层的上表面与所述光学指纹传感器的底面贴合。
可选的，所述聚光层还包括填平层；所述微凸透镜单元位于所述基底层上表面，所述基底层下表面平坦，所述填平层将具有所述微凸透镜单元的所述基底层上表面填平；或者，所述微凸透镜单元位于所述基底层下表面，所述基底层上表面平坦，所述填平层将具有所述微凸透镜单元的所述基底层下表面填平；或者，所述微凸透镜单元位于所述基底层上表面和下表面，所述填平层将具有所述微凸透镜单元的所述基底层上表面和下表面填平。
可选的，所述微凸透镜单元的形状为椭球冠形，球冠形、圆锥形 或者棱锥形；所述微凸透镜单元的尺寸小于所述像素的尺寸；所述填平层的折射率小于所述微凸透镜单元的折射率。
可选的，所述光学指纹传感器和所述面状背光源之间包括所述聚光层，所述聚光层包括平坦层和分布在所述平坦层内的多个微凸透镜单元。
可选的，所述微凸透镜单元的形状为椭球冠形，球冠形、圆锥形或者棱锥形；所述微凸透镜单元的尺寸小于所述像素的尺寸；所述平坦层的折射率小于所述微凸透镜单元的折射率。
可选的，所述光学指纹传感器和所述面状背光源之间包括所述光准直层，所述光准直层具有遮光框架和均匀分布在所述遮光框架的多个透光孔。
可选的，所述光准直层为单层结构或者多层结构；当所述光准直层为单层结构时，包括遮光框架和多个透光孔；当所述光准直层为多层结构时，每层结构中都包括遮光框架和多个透光孔，并且不同层之间的所述透光孔相互重叠。
可选的，所述透光孔的面积小于所述像素的面积，所述透光孔的孔高与直径的比例大于1。
可选的，所述透光基板的所述第一表面和所述第二表面的至少其中一个表面具有滤光层。
与现有技术相比，本发明的技术方案具有以下优点：
本发明的技术方案所提供的光学指纹传感器模组中，光学指纹传感器仅包括一个透光基板，此时，面状背光源发出的光线在穿过光学指纹传感器时，只需要穿过器件层和一个透光基板，因此，光线经过的基板较少，有助于形成清晰的指纹图像。同时，由于光学指纹传感器结构简单，厚度减小，简化了光学指纹传感器模组的结构，降低了成本。此外，面状背光源发出的光线经过器件层和透光基板后，到达透光基板第一表面的光线增加，整个光学指纹传感器模组能够更加准 确实现指纹图像的识别，进一步提高了指纹图像的清晰度，并进一步简化光学指纹传感器模组的结构，降低了成本。
进一步，所述光学指纹传感器和所述面状背光源之间还包括聚光层和光准直层中的至少一层。通过在光学指纹传感器和面状背光源之间设置聚光层和(或)光准直层，从而使得从面状背光源射出的光线方向能够受聚光层和(或)光准直层调整，使大量光线都以较小的角度范围射入保护层，并且相应的角度范围与保护层上表面之间的夹角均接近于直角，从而既减小因入射角范围较大而导致不同角度的反射光的互相干扰，又保证反射光线照射到离其反射点较近的像素，从而提高光学指纹传感器模组所形成的指纹图像的清晰度和准确度。
进一步，所述聚光层包括基底层和多个微凸透镜单元，微凸透镜单元的形状为椭球冠形。微凸透镜单元位于基底层表面。微凸透镜单元聚光效果好的，汇聚光均匀。
进一步，所述聚光层包括平坦层和分布在平坦层内的多个微凸透镜单元。其中，微凸透镜单元为椭球冠形。平坦层将微凸透镜单元包裹在其内部，而平坦层上表面和下表面平坦，整个所述聚光层上下表面均平坦，更有利于与其它结构组装起来。
进一步，在所述光学指纹传感器和所述面状背光源之间设置光准直层，光准直层具有遮光框架和均匀分布在遮光框架的多个透光孔。当斜光照射进入透光孔时，会被遮光框架吸收。从而只允许角度较为垂直向上的光线透过，从而使光准直层能够实现光准直的效果。使大量光线都以较小的角度范围射入保护层，并且相应的角度范围与保护层上表面之间的夹角均接近于直角，从而既减小因入射角范围较大而导致不同角度的反射光的互相干扰，又保证反射光线照射到离其反射点较近的像素，从而提高光学指纹传感器模组所形成的指纹图像的清晰度和准确度。
附图说明
图1是本发明第一实施例所提供的光学指纹传感器模组剖面结 构示意图；
图2是本发明第二实施例所提供的光学指纹传感器模组剖面结构示意图；
图3是本发明第三实施例所提供的光学指纹传感器模组剖面结构示意图；
图4是图3所示光学指纹传感器模组中聚光层结构示意图；
图5是其它实施例中，图3所示光学指纹传感器模组中聚光层结构示意图；
图6是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图7是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图8是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图9是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图10是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图11是其它实施例中，图3所示光学指纹传感器模组中另一种聚光层结构示意图；
图12是本发明第四实施例所提供的光学指纹传感器模组剖面结构示意图；
图13是图12所示光学指纹传感器模组的光准直层示意图。
具体实施方式
现有一种光学指纹传感器中，通常需要包括透光基板和保护层。这种结构不可避免地导致整个光学指纹传感器的厚度较大。而较大的厚度也导致光源发出的光线需要经过较长的光程才到达感光元件，导致采集的指纹图像质量无法进一步提高。
为此，本发明提供一种新的光学指纹传感器模组，通过简化光学指纹传感器的结构，省略保护层，从而不仅使光学指纹传感器模组厚度减小，而且提高所形成的指纹图像质量。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
本发明第一实施例提供一种光学指纹传感器模组，请参考图1。
所述光学指纹传感器模组包括光学指纹传感器110和面状背光源120。光学指纹传感器110有且只有一个透光基板111。透光基板111的第一表面(未标注)直接用于手指指纹接触。透光基板111的第二表面(未标注)具有器件层112。
图1中，所述第一表面为透光基板111的上表面，所述第二表面为透光基板111的下表面。
图中虽未区别显示，但是器件层112具有像素区。所述像素区具有多个像素。每个所述像素具有透光区域和非透光区域。所述非透光区域具有感光元件。所述透光区域使光线能够透过所述器件层112的所述像素区。
请参考图1，面状背光源120位于器件层112下方，面状背光源120的出射光从所述透光区域穿过器件层112，再进入透光基板111。
本实施例中，面状背光源120包括点状光源121和导光板122(即面状背光源120由点状光源121和导光板122构成)。点状光源是LED灯。
在其他实施例中，所述面状背光源也可以直接是自主发光的面状 光源结构(面阵结构)，比如是有机发光二极管面光源或者电致发光面光源等。
其它实施例中，点状光源也可以是其它合适的灯源，例如为荧光灯。
本实施例中，点状光源121设置在导光板122的其中一个侧面外。点状光源121发出的光在一定的发散角度内，照射进入导光板122。
其它实施例中，点状光源还可以内嵌于导光板之内。
本实施例中，透光基板111的厚度T1可以在0.4cm以下，透光基板111太薄了机械强度差，无法保证光学指纹传感器110的可靠性。透光基板111太厚了，整个光学指纹传感器模组厚度增大，产生各种不利影响。
本实施例中，器件层112的厚度(未标注)可以在0.5μm至5μm。器件层112太薄了，器件层112内的器件性能达不到要求。器件层112太厚了，现有的工艺无法制作出相应性能的器件，如果工艺改进，相应的器件层112厚度可以进一步减小。
图中虽未显示，但本实施例中，一个像素还包括遮光层，所述感光元件位于所述遮光层与透光基板111之间，所述遮光层位于所述感光元件与面状背光源120之间。由于所述遮光层设置在相应位置，因此，所述感光元件只能接收从透光基板111进入器件层112的光信号，而面状背光源120的出射光不能从器件层112下方直接照射到所述感光元件。
其它实施例中，所述透光基板的所述第一表面和所述第二表面的至少其中一个表面可以具有滤光层。所述滤光层可以包括干涉反射层和光吸收层的至少其中之一。其中，干涉发射层可以增加有手指与无手指处的反射光差异，从而增加图像对比度，减小环境光对指纹图像的干扰，以减小环境光对指纹成像的影响。
本实施例所提供的光学指纹传感器模组中，光学指纹传感器110 仅包括一个透光基板111，此时，面状背光源120发出的光线在穿过光学指纹传感器110时，只需要穿过器件层112和一个透光基板111，因此，光线经过的基板较少，有助于形成清晰的指纹图像。同时，由于光学指纹传感器110结构简单，厚度减小，简化了光学指纹传感器模组的结构，降低了成本。此外，面状背光源120发出的光线经过器件层112和透光基板111后，到达透光基板111第一表面的光线增加，整个光学指纹传感器模组能够更加准确实现指纹图像的识别，进一步提高了指纹图像的清晰度，并进一步简化光学指纹传感器模组的结构，降低了成本。
本发明第二实施例提供另一种光学指纹传感器模组，请参考图2。
所述光学指纹传感器模组包括光学指纹传感器210和面状背光源220。光学指纹传感器210有且只有一个透光基板211。透光基板211的第一表面(未标注)直接用于手指指纹接触。透光基板211的第二表面(未标注)具有器件层212。图2中，所述第一表面为透光基板211的上表面，所述第二表面为透光基板211的下表面。
图中虽未区别显示，但是器件层212具有像素区。所述像素区具有多个像素。每个所述像素具有透光区域和非透光区域。所述非透光区域具有感光元件。所述透光区域使光线能够透过所述器件层212的所述像素区。
所述面状背光源220位于器件层212下方，面状背光源220的出射光从透光区域穿过器件层212，再进入透光基板211。
本实施例中，所述面状背光源220包括点状光源221和导光板222，点状光源是LED灯。点状光源221设置在导光板222的其中一个侧面外。点状光源221发出的光在一定的发散角度内，照射进入导光板222。
本实施例中，光学指纹传感器210和面状背光源220之间还包括聚光层230。聚光层230能够使得从导光板222射出的光线方向发生 改变，使原本分布在较大角度范围的光线调整成分布在较小角度范围内的光线，即聚光层230还能够尽量使光线集中向上传播，从而使大部分光线尽量与第一表面呈垂直或者接近垂直的关系。因此，在设置聚光层230后，本实施例既减小因入射角范围较大而导致不同角度的反射光互相干扰，又保证反射光线照射到离其入射光线较近的像素，从而提高光学指纹传感器模组所形成的指纹图像的清晰度和准确度。
需要说明的是，其它实施例中，聚光层230可以用光准直层替换。所述光准直层能够使导光板射出的光线选选择性地通过光准直层，只有方向较为垂直向上(方向较为垂直向上意味着光线的方向会与后续保护层上表面形成较大的夹角)的光线能够通过光准直层。因此，同样的，设置光准直层既减小因入射角范围较大而导致入射光之间产生的反射光互相干扰，又保证反射光线照射到离其入射光线较近的像素，从而提高光学指纹传感器模组所形成的指纹图像的清晰度和准确度。
需要说明的是，其它实施例中，所述光学指纹传感器和导光板之间也可以既包括聚光层，又包括光准直层。
本实施例中，由于采用了聚光层230，透光基板211的厚度T2最大可以为5cm，透光基板211较厚，能够提高机械强度。
更多有关本实施例所提供的光学指纹传感器模组的结构和性质，可参考前述实施例所提供的光学指纹传感器模组相应内容。
本发明第三实施例提供另一种光学指纹传感器模组，请参考图3。
所述光学指纹传感器模组包括光学指纹传感器310和面状背光源320。光学指纹传感器310有且只有一个透光基板311。透光基板311的第一表面(未标注)直接用于手指指纹接触。透光基板311的第二表面(未标注)具有器件层312。图3中，所述第一表面为透光基板311的上表面，所述第二表面为透光基板311的下表面。
图中虽未区别显示，但是器件层312具有像素区。所述像素区具 有多个像素。每个所述像素具有透光区域和非透光区域。所述非透光区域具有感光元件。所述透光区域使光线能够透过所述器件层312的所述像素区。
所述面状背光源320位于器件层312下方，面状背光源320的出射光从透光区域穿过器件层312，再进入透光基板311。
本实施例中，所述面状背光源320包括点状光源321和导光板322，点状光源是LED灯。点状光源321设置在导光板322的其中一个侧面外。点状光源321发出的光在一定的发散角度内，照射进入导光板322。点状背光源321发出的光线如图3中粗黑色单向箭头所示。
本实施例中，导光板322背部有一个个半球或半椭球型的小凸点3221。导光板322内部的光线照射到小凸点3221就会产生散射，从而改变光的方向，实现向上照射。导光板322底部(下表面)和其它侧面(外表面)还具有反射膜(图3中未示出)，当光线到达导光板322背面或其它侧面时，绝大部分会被所述反射膜重新反射回导光板322，从而直接向上方向射出，或者继续由小凸点3221散射至向上方向。经导光板322导光散射后的光线如图3中细黑色单向箭头所示。
其它实施例中，导光板322也可以为其他结构(比如在导光板322之上增加扩散膜等)，只需要保证导光板322将相应点状光源发出的光线分散均匀，并向上射出即可。
本实施例中，图3具体显示了所述像素区中的两个像素，分别为像素X1和像素X2，像素X1和像素X2都具有非透光区域(未标注)和透光区域(未标注)。像素X1和像素X2的边长尺寸(像素的平面形状为矩形)可以在30μm至100μm。像素X1和像素X2的边长尺寸太小了，无法在像素所占区域中制作出相应的电路器件，并且还会增加图像的数据量。像素X1和像素X2的边长尺寸太大了，相应的指纹图像解析度会降低。由于人体指纹的尺寸一般在200μm左右，所以综合考虑，可以选择50μm左右。
本实施例中，光学指纹传感器310和面状背光源320之间还包括聚光层330。光学指纹传感器310和聚光层330之间可以通过光学胶粘贴，面状背光源320和聚光层330之间也可以通过光学胶粘贴。所述光学胶可以尽量减少光线在传播过程中经过空气的可能，从而降低光线的多次反射和散射风险，进一步提高所述光学指纹传感器模组所形成的指纹图像清晰度。
请参考图4，图4单独显示了一种聚光层330a，即图4中聚光层330a为图3中聚光层330的一种具体结构。
本实施例中，聚光层330a具有基底层a1和多个微凸透镜单元a2。微凸透镜单元a2的形状为椭球冠形。微凸透镜单元a2位于基底层a1下表面。并且基底层a1上表面与所述光学指纹传感器底面贴合。从物理结构上来说，微凸透镜单元a2要有聚光效果，则从立体上看，从中间到边缘，厚度逐渐变薄就可以起到聚光效果。但是所有结构中，椭球结构的微凸透镜单元a2是聚光效果最好的，所形成的汇聚光也是最均匀的。
其它实施例中，微凸透镜单元可以为其它形状，例如球冠形、圆锥形或者棱锥形等。其它实施例中，所述微凸透镜单元也可以位于所述基底层的上表面。
本实施例中，微凸透镜单元a2的直径尺寸在1μm至100μm。微凸透镜单元a2的直径太小了会导致聚光效果差，而且制作起来也比较困难。微凸透镜单元a2的直径太大了，聚光均匀性较差。
本实施例控制使得微凸透镜单元a2的面积小于像素的面积，并使得平均每个像素下面至少要有一个微凸透镜单元a2(要求微凸透镜单元a2的底部直径小于像素的宽度，并且微凸透镜单元a2的高度也小于像素宽度)。这样在宏观上，各个像素的背光才会是均匀的。反之，如果微凸透镜单元a2的面积大于像素的面积，就可能出现一个微凸透镜单元a2覆盖了多个像素的情况。那么一个微凸透镜单元a2正上方的各个像素所接受到的光是不相同的。从而无法做到各个 像素的背光是一样的，导致最后的成像也会产生不均匀。
实际情况中，导光板3221发出的背光并不是理想的一个个点状光源。各个微凸透镜单元a2的焦距也可能有差别。但是只要背光中一部分的光相当于是点状光源，被微凸透镜单元a2聚焦，这部分光就是平行光或近平行光(近平行光)，就能实现较好的图像。其他未聚焦成平行或近平行那部分光，就当是图像的一个本底噪音。两者的比例会影响图像信噪比，只要信噪比高于一定值，图像就满足要求了。可见，微凸透镜单元a2之间的距离越小越好，可以一个挨着一个。同时，如果满足一个像素对应多个微凸透镜单元a2，那么微凸透镜单元a2间的间距就可以适当大些。
需要说明的是，所述近平行光指全部光线之间的最大角度差异在10度以内。
需要说明的是，其它实施例中，请参考图5，聚光层330的另一种具体结构为聚光层330b，聚光层330b具有基底层b1和多个微凸透镜单元b2，并且微凸透镜单元b2的形状同样为椭球冠形，不同的是，微凸透镜单元b2同时位于基底层b1上表面和下表面。
需要说明的是，其它实施例中，请参考图6，聚光层330的另一种具体结构为聚光层330c，聚光层330c具有基底层c1和多个微凸透镜单元c2，不同的是，微凸透镜单元c2呈棱锥形(可以为三棱锥形或者四棱锥形等，但在图6所示剖面中显示为三角形，其它实施例中还可以为圆锥形)，并且微凸透镜单元c2仅位于基底层c1上表面。基底层c1下表面平坦，可以将基底层c1下表面与光学指纹传感器底面贴合，当然，也可以将基底层c1下表面与导光板3221顶面贴合。
需要说明的是，其它实施例中，请参考图7，聚光层330的另一种具体结构为聚光层330d，聚光层330d具有基底层d1和多个微凸透镜单元d2。聚光层330d还包括填平层d3。其中，填平层d3将具有微凸透镜单元d2的基底层471d下表面填平，即填平层d3位于微凸透镜单元d2两侧，并可以覆盖整个微凸透镜单元d2，从而使整个 聚光层330具有平坦表面。
需要说明的是，其它实施例中，请参考图8，聚光层330的另一种具体结构为聚光层330e，聚光层330e具有基底层e1和多个微凸透镜单元e2。聚光层330e还包括填平层e3。微凸透镜单元e2位于基底层e1上表面和下表面。填平层e3将具有微凸透镜单元的基底层e1的上表面和下表面都填平。填平层e3将具有微凸透镜单元e2的基底层e1的上表面和下表面填平后，整个聚光层330e上下表面均平坦，更有利于与其它结构组装起来。
需要说明的是，其它实施例中，请参考图9，聚光层330的另一种具体结构为聚光层330f，聚光层330f具有基底层f1和多个微凸透镜单元f2。聚光层330f还包括填平层f3。微凸透镜单元f2为棱锥形，微凸透镜单元f2位于基底层f1上表面。填平层f3将具有微凸透镜单元f2的基底层f1上表面填平。填平层f3将具有微凸透镜单元f2的基底层f1上表面填平后，整个所述聚光层上下表面均平坦，更有利于与其它结构组装起来。
上述具有基底层的各实施例中，各个微凸透镜单元均能够起到聚光的作用，从而将从导光板3221发出的大角度范围分布的光线，汇集成小角度范围的光线，从而有利于光学指纹传感器模组形成清晰的指纹图像。
需要说明的是，上述各实施例中，各填平层选用折射率较低的材料制作(即填平层的材料的折射率小于微凸透镜单元的材料的折射率)，从而保证各聚光层中，各微凸透镜单元充分发挥聚光作用。
需要说明的是，其它实施例中，请参考图10，聚光层330的另一种具体结构为聚光层330g，聚光层330g包括平坦层g2和分布在平坦层g2内的多个微凸透镜单元g1。其中，图10中微凸透镜单元g1为棱锥形(具体可以为三棱锥形或者四棱锥形等)。平坦层g2将微凸透镜单元g1包裹在其内部，而平坦层g2上表面和下表面平坦，整个所述聚光层上下表面均平坦，更有利于与其它结构组装起来。
需要说明的是，其它实施例中，请参考图11，聚光层330的另一种具体结构为聚光层330h，聚光层330h包括平坦层h2和分布在平坦层h2内的多个微凸透镜单元h1。其中，图11中微凸透镜单元h1为椭球冠形(其它实施例中可以为球冠形或者其它形状)。平坦层h2将微凸透镜单元h1包裹在其内部，而平坦层h2上表面和下表面平坦，整个所述聚光层上下表面均平坦，更有利于与其它结构组装起来。
上述具有平坦层的各实施例中，同样的，各个微凸透镜单元均能够起到聚光的作用，从而将从导光板3221发出的大角度范围分布的光线，汇集成小角度范围的光线，从而有利于光学指纹传感器模组形成清晰的指纹图像。
需要说明的是，上述各实施例中，平坦层也选用折射率较低的材料制作(即平坦层的材料的折射率小于微凸透镜单元的材料的折射率)，从而保证各聚光层中，各微凸透镜单元充分发挥聚光作用。
由上述可知，本实施例所提供的光学指纹传感器模组中，通过在光学指纹传感器和面状背光源之间设置所述聚光层，从而使得从面状背光源射出的光线方向能够受聚光层的调整，使大量光线都以较小的角度范围到达透光基板311的所述第一表面，并且相应的角度范围与所述第一表面之间的夹角均接近于直角，从而既减小因入射角范围较大而导致入射光之间产生的反射光互相干扰，又保证反射光线照射到离其入射光线较近的像素，从而提高光学指纹传感器模组所形成的指纹图像的清晰度。
更多有关本实施例所提供的光学指纹传感器模组的结构和性质，可参考前述实施例所提供的光学指纹传感器模组相应内容。
本发明第四实施例提供另一种光学指纹传感器模组，请参考图12。
所述光学指纹传感器模组包括光学指纹传感器410和面状背光 源420。光学指纹传感器410有且只有一个透光基板411。透光基板411的第一表面(未标注)直接用于手指指纹接触。透光基板411的第二表面(未标注)具有器件层412。图12中，所述第一表面为透光基板411的上表面，所述第二表面为透光基板411的下表面。
图中虽未区别显示，但是器件层412具有像素区。所述像素区具有多个像素。每个所述像素具有透光区域和非透光区域。所述非透光区域具有感光元件。所述透光区域使光线能够透过所述器件层412的所述像素区。
所述面状背光源420位于器件层412下方，面状背光源420的出射光从透光区域穿过器件层412，再进入透光基板411。
本实施例中，所述面状背光源420包括点状光源421和导光板422，点状光源是LED灯。点状光源421设置在导光板422的其中一个侧面外。点状光源421发出的光在一定的发散角度内，照射进入导光板422。点状背光源421发出的光线如图12中粗黑色单向箭头所示。
本实施例中，导光板422背部有一个个半球或半椭球型的小凸点4221。导光板422内部的光线照射到小凸点4221就会产生散射，从而改变光的方向，实现向上照射。导光板422底部(下表面)和其它侧面(外表面)还具有反射膜(图12中未示出)，当光线到达导光板422背面或其它侧面时，绝大部分会被所述反射膜重新反射回导光板422，从而直接向上方向射出，或者继续由小凸点4221散射至向上方向。经导光板422导光散射后的光线如图4中细黑色单向箭头所示。
本实施例中，图12具体显示了其中两个像素，分别为像素Y1和像素Y2，像素Y1和像素Y2都具有非透光区域(未标注)和透光区域(未标注)。像素Y1和像素Y2的边长尺寸(像素的平面形状为矩形)可以在40μm至100μm，具体可以选择50μm左右。
本实施例中，光学指纹传感器410和面状背光源420之间还包括光准直层430。
图中虽未显示，所述光学指纹传感器模组中，光学指纹传感器410和光准直层430之间可以有光学胶层，从而防止空气层的存在。为了最佳效果，所述光学胶层尽可能薄，一般可以设置在2μm至200μm。其它实施例中，光准直层430和导光板422之间也可以具有光学胶层。
请参考图13，光准直层430具有遮光框架432和均匀分布在遮光框架432的多个透光孔431。当斜光照射进入透光孔时，会被遮光框架432吸收。从而只允许角度较为垂直向上的光线透过，从而使光准直层430能够实现光准直的效果。
本实施例中，光准直层430为单层结构。透光孔431的面积小于像素的面积。为了实现好的光均匀性和准直性，透光孔431的面积大小必须小于像素的面积大小。
本实施例中，在透光孔431直径一定时，满足每个像素至少一个小孔的情况下，相邻透光孔431之间的距离越大，透光孔431的个数就越少，那么光利用率就越低，实际信号就越小，因此，在一定情况下，可以尽量减小透光孔431之间的距离。
请参考图13，本实施例中，透光孔431的孔高H与直径D的比例大于1，即图13中，H:D>1。H:D的值越大，透过光准直层的光线平行效果越好，但是能够透过的光线也越少。
本实施例中，光准直层430的整体厚度可以为10μm至10000μm。光准直层430的整体厚度控制在上述范围内，即保证其能够起到相应的光准直作用，同时又防止整个光学指纹传感器模组厚度太大。
本实施例中，透光孔431内可以为空气、真空或者透光介质，只需要保证透光孔431能够透光相应光线即可。当然，当透光孔431内 为真空或者透光介质时，更加有利于光线的透过。
其它实施例中，光准直层也可以为多层结构。当光准直层为多层结构时，每层结构中都包括遮光框架432和多个透光孔431，并且不同层之间的透光孔431相互重叠。当光准直层为多层结构时，光准直层的整体厚度10μm至10000μm。
本发明的各实施例中，为了减小光的折射散射，可以使所述光学胶层和所述光学指纹传感器的折射率尽量相近。例如可以使这三层结构的折射率都在1.5左右。
需要说明的是，本发明中，上述得各实施例都是实现光垂直或接近垂直入射到达透光基板411的第一表面(即光线方向与保护层上表面方向成直角或者接近成直角)。但是，在一些情况下，通过上述各实施例的结构(聚光层和光准直层的至少其中一层设置在导光板和光学指纹传感器之间)，也可以适当减小上述角度，例如70度或50度等，但要保证所有入射光的角度都相差不大。当角度是垂直时，指纹对应的成像像素在指纹处的正下方，如果入射光都保持一个倾斜角，则所有成像像素都偏移对应指纹一定距离，但是图像清晰度和准确度不会受明显影响。
更多有关本实施例所提供的光学指纹传感器模组的结构和性质，可参考前述实施例所提供的光学指纹传感器模组相应内容。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (13)

  1. 一种光学指纹传感器模组，包括：
    光学指纹传感器；
    面状背光源；
    其特征在于：
    所述光学指纹传感器有且只有一个透光基板；
    所述透光基板的第一表面直接用于手指指纹接触；
    所述透光基板的第二表面具有器件层；
    所述器件层具有像素区；所述像素区具有多个像素；每个所述像素具有透光区域和非透光区域；所述非透光区域具有感光元件；所述透光区域使光线能够透过所述器件层的所述像素区；
    所述面状背光源位于所述器件层下方，所述面状背光源的出射光从所述透光区域穿过所述器件层，再进入所述透光基板。
  2. 如权利要求1所述的光学指纹传感器模组，其特征在于，一个所述像素还包括遮光层，所述感光元件位于所述遮光层与所述透光基板之间，所述遮光层位于所述感光元件与所述面状背光源之间。
  3. 如权利要求1或2所述的光学指纹传感器模组，其特征在于，所述光学指纹传感器和所述面状背光源之间还包括聚光层和 光准直层中的至少一层，所述聚光层和光准直层使透过的光的角度范围变小。
  4. 如权利要求3所述的光学指纹传感器模组，其特征在于，所述光学指纹传感器和所述面状背光源之间包括所述聚光层，所述聚光层包括基底层和多个微凸透镜单元，所述微凸透镜单元位于所述基底层上表面和下表面的至少其中之一。
  5. 如权利要求4所述的光学指纹传感器模组，其特征在于，所述微凸透镜单元位于所述基底层上表面，所述基底层下表面平坦，所述基底层的下表面与所述面状背光源的上表面贴合；或者，所述微凸透镜单元位于所述基底层下表面，所述基底层上表面平坦，所述基底层的上表面与所述光学指纹传感器的底面贴合。
  6. 如权利要求4所述的光学指纹传感器模组，其特征在于，所述聚光层还包括填平层；所述微凸透镜单元位于所述基底层上表面，所述基底层下表面平坦，所述填平层将具有所述微凸透镜单元的所述基底层上表面填平；或者，所述微凸透镜单元位于所述基底层下表面，所述基底层上表面平坦，所述填平层将具有所述微凸透镜单元的所述基底层下表面填平；或者，所述微凸透镜单元位于所述基底层上表面和下表面，所述填平层将具有所述微凸透镜单元的所述基底层上表面和下表面填平。
  7. 如权利要求6所述的光学指纹传感器模组，其特征在于，所述微凸透镜单元的形状为椭球冠形，球冠形、圆锥形或者棱锥 形；所述微凸透镜单元的尺寸小于所述像素的尺寸；所述填平层的折射率小于所述微凸透镜单元的折射率。
  8. 如权利要求3所述的光学指纹传感器模组，其特征在于，所述光学指纹传感器和所述面状背光源之间包括所述聚光层，所述聚光层包括平坦层和分布在所述平坦层内的多个微凸透镜单元。
  9. 如权利要求8所述的光学指纹传感器模组，其特征在于，所述微凸透镜单元的形状为椭球冠形，球冠形、圆锥形或者棱锥形；所述微凸透镜单元的尺寸小于所述像素的尺寸；所述平坦层的折射率小于所述微凸透镜单元的折射率。
  10. 如权利要求3所述的光学指纹传感器模组，其特征在于，所述光学指纹传感器和所述面状背光源之间包括所述光准直层，所述光准直层具有遮光框架和均匀分布在所述遮光框架的多个透光孔。
  11. 如权利要求10所述的光学指纹传感器模组，其特征在于，所述光准直层为单层结构或者多层结构；当所述光准直层为单层结构时，包括遮光框架和多个透光孔；当所述光准直层为多层结构时，每层结构中都包括遮光框架和多个透光孔，并且不同层之间的所述透光孔相互重叠。
  12. 如权利要求11所述的光学指纹传感器模组，其特征在 于，所述透光孔的面积小于所述像素的面积，所述透光孔的孔高与直径的比例大于1。
  13. 如权利要求1所述的光学指纹传感器模组，其特征在于，所述透光基板的所述第一表面和所述第二表面的至少其中一个表面具有滤光层。
PCT/CN2016/095827 2016-07-08 2016-08-18 光学指纹传感器模组 WO2018006475A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610536745.9A CN107590421A (zh) 2016-07-08 2016-07-08 光学指纹传感器模组
CN201610536745.9 2016-07-08

Publications (1)

Publication Number Publication Date
WO2018006475A1 true WO2018006475A1 (zh) 2018-01-11

Family

ID=60901598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/095827 WO2018006475A1 (zh) 2016-07-08 2016-08-18 光学指纹传感器模组

Country Status (2)

Country Link
CN (1) CN107590421A (zh)
WO (1) WO2018006475A1 (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019023798A1 (en) * 2017-07-31 2019-02-07 Exigence Technologies Inc. POLYMERIZABLE COMPOUNDS HAVING ONE OR MORE SURFACE-TYPE PROPERTIES
CN110580431A (zh) * 2018-06-11 2019-12-17 上海箩箕技术有限公司 光学指纹传感器模组及其形成方法
CN110796097A (zh) * 2019-10-30 2020-02-14 Oppo广东移动通信有限公司 屏下光学指纹模组、显示屏组件和电子设备
CN111144385A (zh) * 2020-01-21 2020-05-12 上海思立微电子科技有限公司 指纹成像单元和电子设备
CN111325072A (zh) * 2018-12-17 2020-06-23 上海箩箕技术有限公司 光学传感器模组及其形成方法
CN112712039A (zh) * 2020-12-31 2021-04-27 维沃移动通信有限公司 指纹模组及电子设备
CN113099082A (zh) * 2021-03-25 2021-07-09 北京灵汐科技有限公司 传感器组件及电子设备

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109196524B (zh) * 2018-02-23 2020-05-05 深圳市汇顶科技股份有限公司 通过光学感测检测指纹的电子设备及其操作方法
US10216975B1 (en) 2018-02-23 2019-02-26 Shenzhen GOODIX Technology Co., Ltd. Optical imaging via imaging lens and imaging pinhole in under-screen optical sensor module for on-screen fingerprint sensing in devices having organic light emitting diode (OLED) screens or other screens
CN108491761B (zh) * 2018-02-26 2019-11-15 维沃移动通信有限公司 指纹感光识别装配结构及电子设备
CN108513666B (zh) * 2018-03-22 2022-05-17 深圳市汇顶科技股份有限公司 屏下生物特征识别装置和电子设备
CN108446677A (zh) * 2018-05-03 2018-08-24 东莞市美光达光学科技有限公司 一种用于屏幕下方的指纹识别模组
CN110502957B (zh) * 2018-05-17 2023-03-10 上海耕岩智能科技有限公司 一种同步验证指纹信息的触控组件操作方法和装置
US10824838B2 (en) 2018-07-25 2020-11-03 Shenzhen GOODIX Technology Co., Ltd. Under-screen optical fingerprint sensor based on lens-pinhole imaging with an off-axis pinhole
US10803286B2 (en) * 2018-07-25 2020-10-13 Shenzhen GOODIX Technology Co., Ltd. Under-screen optical fingerprint sensor based on optical imaging with an optical axis off-normal to the display screen surface
CN109716352B (zh) * 2018-12-17 2023-07-14 深圳市汇顶科技股份有限公司 液晶显示指纹模组、屏下指纹识别系统及电子设备
CN109633959A (zh) * 2019-01-21 2019-04-16 上海思立微电子科技有限公司 可实现屏内指纹识别的显示装置
CN109784307B (zh) 2019-01-31 2020-09-01 维沃移动通信有限公司 终端设备
CN110008840B (zh) * 2019-03-08 2022-02-01 昆山丘钛生物识别科技有限公司 光学指纹模组及指纹识别显示装置
CN111052143B (zh) * 2019-04-10 2023-09-08 深圳市汇顶科技股份有限公司 光学指纹装置和电子设备
CN110135381A (zh) * 2019-05-22 2019-08-16 京东方科技集团股份有限公司 透镜、指纹识别模组和电子设备
CN110245631B (zh) * 2019-06-20 2021-09-21 厦门天马微电子有限公司 显示面板及指纹识别显示装置
CN110955083B (zh) * 2019-09-30 2022-10-11 厦门天马微电子有限公司 显示装置
WO2021097707A1 (zh) * 2019-11-20 2021-05-27 深圳市汇顶科技股份有限公司 屏下指纹识别装置及系统、背光模组和液晶显示屏
CN111046775A (zh) * 2019-12-06 2020-04-21 Oppo广东移动通信有限公司 光线准直元件、指纹识别装置及电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013071311A1 (en) * 2011-11-11 2013-05-16 Cross Match Technologies, Inc. Ambient light rejection for non-imaging contact sensors
US20130129163A1 (en) * 2011-11-21 2013-05-23 Samsung Electro-Mechanics Co., Ltd. Fingerprint sensor and method of operating the same
CN103942559A (zh) * 2013-01-21 2014-07-23 义明科技股份有限公司 影像感测装置以及影像感测装置的解码电路
CN105184248A (zh) * 2015-08-28 2015-12-23 京东方科技集团股份有限公司 一种指纹识别装置及指纹识别系统
CN105550664A (zh) * 2016-01-08 2016-05-04 上海箩箕技术有限公司 光学指纹传感器模组
CN105701465A (zh) * 2016-01-12 2016-06-22 上海箩箕技术有限公司 指纹成像单元及其形成方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040252867A1 (en) * 2000-01-05 2004-12-16 Je-Hsiung Lan Biometric sensor
CN105679782B (zh) * 2014-11-20 2018-12-11 上海箩箕技术有限公司 接触式图像传感器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013071311A1 (en) * 2011-11-11 2013-05-16 Cross Match Technologies, Inc. Ambient light rejection for non-imaging contact sensors
US20130129163A1 (en) * 2011-11-21 2013-05-23 Samsung Electro-Mechanics Co., Ltd. Fingerprint sensor and method of operating the same
CN103942559A (zh) * 2013-01-21 2014-07-23 义明科技股份有限公司 影像感测装置以及影像感测装置的解码电路
CN105184248A (zh) * 2015-08-28 2015-12-23 京东方科技集团股份有限公司 一种指纹识别装置及指纹识别系统
CN105550664A (zh) * 2016-01-08 2016-05-04 上海箩箕技术有限公司 光学指纹传感器模组
CN105701465A (zh) * 2016-01-12 2016-06-22 上海箩箕技术有限公司 指纹成像单元及其形成方法

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019023798A1 (en) * 2017-07-31 2019-02-07 Exigence Technologies Inc. POLYMERIZABLE COMPOUNDS HAVING ONE OR MORE SURFACE-TYPE PROPERTIES
CN110580431A (zh) * 2018-06-11 2019-12-17 上海箩箕技术有限公司 光学指纹传感器模组及其形成方法
CN111325072A (zh) * 2018-12-17 2020-06-23 上海箩箕技术有限公司 光学传感器模组及其形成方法
CN111325072B (zh) * 2018-12-17 2023-05-09 上海箩箕技术有限公司 光学传感器模组及其形成方法
CN110796097A (zh) * 2019-10-30 2020-02-14 Oppo广东移动通信有限公司 屏下光学指纹模组、显示屏组件和电子设备
CN110796097B (zh) * 2019-10-30 2022-08-30 Oppo广东移动通信有限公司 屏下光学指纹模组、显示屏组件和电子设备
CN111144385A (zh) * 2020-01-21 2020-05-12 上海思立微电子科技有限公司 指纹成像单元和电子设备
CN111144385B (zh) * 2020-01-21 2023-06-20 上海思立微电子科技有限公司 指纹成像单元和电子设备
CN112712039A (zh) * 2020-12-31 2021-04-27 维沃移动通信有限公司 指纹模组及电子设备
WO2022143535A1 (zh) * 2020-12-31 2022-07-07 维沃移动通信有限公司 指纹模组及电子设备
CN112712039B (zh) * 2020-12-31 2024-03-01 维沃移动通信有限公司 指纹模组及电子设备
CN113099082A (zh) * 2021-03-25 2021-07-09 北京灵汐科技有限公司 传感器组件及电子设备

Also Published As

Publication number Publication date
CN107590421A (zh) 2018-01-16

Similar Documents

Publication Publication Date Title
WO2018006475A1 (zh) 光学指纹传感器模组
WO2017118029A1 (zh) 光学指纹传感器模组
WO2020181493A1 (zh) 屏下指纹识别装置和电子设备
CN107065274B (zh) 阵列基板、显示面板及显示装置
WO2020037991A1 (zh) 屏下光学指纹识别系统及电子装置
WO2020151159A1 (zh) 指纹识别的装置和电子设备
WO2018040514A1 (zh) 光学指纹传感器模组
CN108877492B (zh) 嵌入光学成像传感器的平板显示器
WO2017118031A1 (zh) 光学指纹传感器模组
JP7425002B2 (ja) 紋様画像取得装置、表示装置及びコリメート部材
WO2020220305A1 (zh) 屏下指纹识别装置和电子设备
CN110720106B (zh) 指纹识别的装置和电子设备
WO2017118030A1 (zh) 光学指纹传感器模组
CN110945527B (zh) 指纹识别装置和电子设备
CN211319246U (zh) 指纹识别装置、背光模组、液晶显示屏和电子设备
WO2018010250A1 (zh) 光学指纹传感器模组
CN210109828U (zh) 指纹识别的装置和电子设备
WO2017156975A1 (zh) 光学指纹传感器模组
CN111095278B (zh) 指纹识别装置和电子设备
CN108803781B (zh) 具有光学成像传感器的平板显示器
WO2018006474A1 (zh) 光学指纹传感器模组
CN212112505U (zh) 指纹识别装置
TWM572985U (zh) 檢測裝置
US11244140B2 (en) Electronic apparatus and texture recognition device
KR102204164B1 (ko) 지문인식용 광학필름

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16907979

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS (EPO FORM 1205A DATED 06.05.2019)

122 Ep: pct application non-entry in european phase

Ref document number: 16907979

Country of ref document: EP

Kind code of ref document: A1