CN110032950B - Base and sensing module - Google Patents
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- CN110032950B CN110032950B CN201910224667.2A CN201910224667A CN110032950B CN 110032950 B CN110032950 B CN 110032950B CN 201910224667 A CN201910224667 A CN 201910224667A CN 110032950 B CN110032950 B CN 110032950B
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Classifications
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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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The application is applicable to the technical field of optics and electronics, and provides a base which is used for bearing a transmitting unit and a receiving unit which are arranged below a display device. The transmitting unit and the receiving unit are used for transmitting and receiving sensing light through the display device so as to sense an external object. The base comprises a top surface and a bottom surface which are oppositely arranged. The bottom surface is provided with a bottom surface accommodating groove. And a sensing through hole penetrating to the top surface is formed in the bottom surface accommodating groove. The top surface is provided with a top surface accommodating groove. The bottom surface accommodation groove is used for setting up receiving element. The top surface holding groove is used for setting up the transmitting unit.
Description
Technical Field
The application belongs to the technical field of optics, and particularly relates to a base and a sensing module.
Background
In order to realize multiple functions, the existing electronic device often needs to set a function module on a main view plane, for example: in order to adopt the fingerprint identification function to start the electronic equipment, a fingerprint identification module is arranged on the main vision surface of the electronic equipment. However, these functional modules are usually required to be separately disposed outside the display area of the electronic device, thereby occupying the display area of the electronic device and affecting the overall look and feel of the front view of the electronic device.
Disclosure of Invention
The application provides a base and a sensing module to solve the technical problems.
The embodiment of the application provides a base which is used for bearing a transmitting unit and a receiving unit which are arranged below a display device. The transmitting unit and the receiving unit are used for transmitting and receiving sensing light through the display device so as to sense an external object. The base comprises a top surface and a bottom surface which are oppositely arranged. The bottom surface is provided with a bottom surface accommodating groove. And a sensing through hole penetrating to the top surface is formed in the bottom surface accommodating groove. The top surface is provided with a top surface accommodating groove. The bottom surface accommodation groove is used for setting up receiving element. The top surface holding groove is used for setting up the transmitting unit.
In certain embodiments, the base is made of a hard material that is opaque to light.
In certain embodiments, the base is black in color.
In some embodiments, the inner surface of the top surface receiving groove is coated with a reflective material or forms a microstructure having a reflective effect.
In some embodiments, the top surface accommodating groove is opened around the sensing through hole opening.
In some embodiments, the top receiving grooves are symmetrically distributed about the opening of the sensing through hole.
In some embodiments, the display device defines a sensing area, the external object contacts with the display device in the sensing area to reflect the sensing light for sensing, the emitting unit is used for emitting the sensing light to the sensing area, the top surface accommodating groove includes a mounting surface for setting the emitting unit, the mounting surface is inclined at a preset angle relative to the top surface, and the inclination angle of the mounting surface changes within a preset range, so that the irradiation range of the chief ray with the highest luminous intensity in the light emitted by the emitting unit covers the whole sensing area.
In some embodiments, the preset inclination angle of the mounting surface is such that the chief ray of the emitting unit irradiates the boundary of the furthest side of the sensing area from the emitting unit.
In some embodiments, the preset inclination angle of the mounting surface is such that the chief ray of the emitting unit irradiates the boundary of the sensing region on the side nearest to the emitting unit.
In some embodiments, the top surface accommodating groove comprises a guide portion and a mounting portion, the depth of the guide portion gradually deepens from the vicinity of the opening of the sensing through hole along the radial direction of the base toward the direction away from the sensing through hole, the mounting portion is arranged at the end of the guide portion farthest from the sensing through hole, and the mounting surface is formed in the mounting portion.
The embodiment of the application provides a sensing module which is arranged below a display device and is used for transmitting and receiving sensing light through the display device so as to sense an external object. The sensing module comprises a transmitting unit, a receiving unit and a base. The base comprises a top surface and a bottom surface which are oppositely arranged. The bottom surface is provided with a bottom surface accommodating groove, and a sensing through hole penetrating to the top surface is formed in the bottom surface accommodating groove. The top surface is provided with a top surface accommodating groove. The transmitting unit is arranged in the top accommodating groove and transmits sensing light to the display device, and the receiving unit is arranged in the bottom accommodating groove and is used for receiving the sensing light through the sensing through hole.
In certain embodiments, the sensing light is infrared or near infrared light with a wavelength in the range of 750nm to 1000nm.
In certain embodiments, the transmitting unit is selected from one or a combination of several of LED, OLED, VCSEL and LD.
According to the embodiment of the application, the base used for bearing the transmitting unit and the receiving unit is arranged below the display device, so that the sensing function can be realized by transmitting and/or receiving sensing light rays through the display device in the display area of the display device, the display area of the electronic equipment is not required to be occupied, the screen occupation ratio of the electronic equipment is improved, and the overall look and feel of the main view surface of the electronic equipment is improved. In addition, the base isolates the transmitting unit and the receiving unit from each other by arranging the sensing through hole structure, so that the interference of sensing light directly sent by the transmitting unit on the receiving unit is reduced, and the sensing accuracy is improved.
Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.
Drawings
Fig. 1 is a schematic front view of an electronic device according to an embodiment of the present application.
FIG. 2 is a portion of the schematic cross-sectional view of the electronic device of FIG. 1, including a sensing module, taken along line II-II.
Fig. 3 is a schematic perspective view of the sensor module shown in fig. 2.
Fig. 4 is a schematic cross-sectional view of the sensor module of fig. 3 along line IV-IV.
Fig. 5 is a schematic diagram of the light source luminous intensity of the sensing module in fig. 2 according to the change of the luminous angle.
FIG. 6 is an embodiment of the light source illumination angle setting of the sensor module depicted in FIG. 2.
FIG. 7 is a modified embodiment of the light source illumination angle setting of the sensor module shown in FIG. 2.
Fig. 8 is another portion of the electronic device depicted in fig. 1, further including a center, along line II-II.
Fig. 9 is a schematic perspective view of the sensing module according to an alternative embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be interpreted as indicating or implying a relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically connected, electrically connected or communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements or interaction relationship between the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of this application, only the components and settings of a particular example are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the use of reference numerals and/or letters in the various examples is repeated herein for the purpose of simplicity and clarity of presentation and is not in itself an indication of a particular relationship between the various embodiments and/or settings discussed. In addition, the various specific processes and materials provided in the following description of the present application are merely examples of implementing the technical solutions of the present application, but one of ordinary skill in the art should recognize that the technical solutions of the present application may also be implemented by other processes and/or other materials not described below.
Further, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the present application. It will be appreciated, however, by one skilled in the art that the subject matter of the present application may be practiced without one or more of the specific details, or with other structures, components, etc. In other instances, well-known structures or operations are not shown or described in detail to avoid obscuring aspects of the application.
Referring to fig. 1 and 2 together, one embodiment of the present application provides an electronic device 1, such as a mobile phone, a notebook computer, a tablet computer, a touch-control interactive screen, a door, a vehicle, a robot, an automatic numerical control machine, and so on. The electronic device 1 comprises a display device 10 and a sensor module 12 arranged below the display device 10. The electronic device 1 is configured to correspondingly perform a corresponding function according to a sensing result of the sensing module 12. The corresponding functions include, but are not limited to, unlocking after identifying the identity of the user, paying, starting a preset application program, avoiding barriers, and judging any one or more of emotion and health conditions of the user by using a deep learning technology after identifying facial expressions of the user.
The display device 10 includes a display panel 102 and a backlight module 104. The backlight module 104 is disposed below the display panel 102, and is configured to provide backlight light for the display panel 102. The sensing module 12 is disposed below the backlight module 104. The sensing module 12 can emit and/or receive sensing light through the backlight module 104 and the display panel 102 of the display device 10. The sensing light emitted by the sensing module 12 irradiates to an external object outside the electronic device 1 through the backlight module 104 and the display panel 102. The sensing light is reflected by the external object and then received by the sensing module 12 through the display panel 102 and the backlight module 104 for sensing. In this embodiment, the sensing light may carry biometric information of the external object after being reflected by the external object, for example: the external object is a finger of a user, and the biological characteristic information is fingerprint information of the user. The sensing module 12 is, for example, a fingerprint recognition module, and can obtain fingerprint information of an external object for recognition by sensing the reflected sensing light.
It will be appreciated that in other alternative embodiments, the sensing light may be used directly to sense the proximity of an external object without carrying biometric information about the external object. For example: the sensing module 12 senses that the sensing light exceeding the preset threshold is reflected, and then the external object is considered to be close to the electronic device 1.
A sensing region 105 is defined in the display region of the display panel 102. The external object contacts the display panel 102 in the sensing region 105 to reflect the sensing light for sensing. The sensing module 12 is disposed below the backlight module 104 and corresponds to the sensing area 105. The sensor module 12 includes a transmitting unit 122, a receiving unit 124, and a base 126. The emitting unit 122 can emit sensing light onto an external image through the display device 10. The receiving unit 124 can receive the sensing light reflected by the external object through the display device 10 for sensing. The transmitting unit 122 and the receiving unit 124 are disposed on the base 126. The base 126 is disposed below the backlight module 104 and corresponds to the sensing area 105. In this embodiment, the sensing light is used to sense a fingerprint. The sensing light may be light of infrared or near infrared wavelength in the range of 750 nanometers (nm) to 1000nm. The emitting unit 122 may be a light emitting diode (Light Emitting Diode, LED). The receiving unit 124 includes a lens 1240 and an image sensor 1242. The lens 1240 focuses the reflected sensing light onto the image sensor 1242 for fingerprint sensing.
It will be appreciated that in other alternative embodiments, the emitting unit 122 may be another type of light source, for example: organic light emitting diodes (Organic Light Emitting Diode, OLED), vertical cavity surface emitting lasers (Vertical Cavity Surface Emitting Laser, VCSEL), laser Diodes (LD). The receiving unit 124 may also omit lens 1240 and use the principles of aperture imaging to image directly onto image sensor 1242. Alternatively, the receiving unit 124 does not need imaging when performing proximity sensing, and the receiving unit 124 may use a Photodiode (PD) instead of the image sensor 1242 for sensing.
Referring to fig. 3 and fig. 4, the base 126 is configured to carry the transmitting unit 122 and the receiving unit 124, and shield the receiving unit 124 accommodated therein from the sensing light directly emitted from the transmitting unit 122, so as to prevent the sensing light from entering the receiving unit 124 and interfering with sensing. The base 126 includes oppositely disposed top and bottom surfaces 1260, 1262. The top surface 1260 is disposed toward the backlight module 104. The bottom surface 1262 faces away from the top surface 1260, and is farther from the backlight module 104 than the top surface 1260. Bottom surface 1262 is provided with bottom surface accommodating groove 1263. A sensing through hole 1264 penetrating to the top surface 1260 is formed in the bottom surface accommodating groove 1263. The receiving unit 124 is disposed in the bottom receiving groove 1263, and receives the sensing light reflected by the external object through the sensing through hole 1264. In particular, the receiving unit 124 may further include a circuit board 1244. The image sensor 1242 and lens 1240 are disposed on the circuit board 1244. The bottom receiving groove 1263 has a shape corresponding to the circuit board 1244 or larger than the circuit board 1244 so as to receive the circuit board 1244. The lens 1240 may extend into the sensing through hole 1264 or be aligned with the sensing through hole 1264 outside the sensing through hole 1264 to focus the sensing light reflected back from the external object.
A plurality of top receiving grooves 1265 are formed on the top surface 1260 around the opening of the sensing through hole 1264. That is, the top receiving groove 1265 may be opened around the opening of the sensing through hole 1264. In particular, the top surface receiving grooves 1265 are symmetrically distributed with respect to the openings of the sensing through holes 1264 by a top surface receiving groove 1265, which includes, but is not limited to, rotational symmetry and center symmetry. The emitting unit 122 may include a plurality of light sources 1220, for example: an LED light source. The light sources 1220 are respectively accommodated in the top accommodating grooves 1265. Each top receiving slot 1265 includes a mounting surface 1266. The mounting surface 1266 is used for mounting the light source 1220. The light source 1220 is disposed on the mounting surface 1266 and emits sensing light to the sensing region 105 of the display device 10 above the base 126. The mounting surface 1266 is inclined at an angle relative to the top surface 1260 of the base 126. The angle of inclination of the mounting surface 1266 depends on the position of the base 126 relative to the sensing region 105 (see fig. 2) and the distance between the base 126 and the overlying backlight module 104. In this embodiment, the top surface 1260 is planar.
The base 126 may be made of a hard material that is opaque to light, such as: steel, aluminum alloys, zinc alloys, stainless steel alloys, ceramics, plastics, etc. The base 126 may also be black in color to enhance the stray light absorption of the base 126. The portion of the base 126 located between the sensing through hole 1264 and the top surface accommodating groove 1265 forms a retaining wall, which can be used as a light shielding structure to prevent sensing light directly emitted by the light source 1220 from entering the receiving unit 124 through the sensing through hole 1264 to interfere with sensing. The inner surface of the top surface accommodating groove 1265 may be further coated with a reflective material to reflect the sensing light to the display device 10 (see fig. 2) above the base 126, so as to improve the utilization rate of the sensing light. In this embodiment, since the sensing light is infrared light or near infrared light, the reflective material is a material that can reflect infrared light or near infrared light, respectively.
It will be appreciated that in other modified embodiments, the inner surface of the top surface accommodating groove 1265 may be further formed with a microstructure having a reflection effect, for example: saw tooth shaped reflective microstructures.
In the present embodiment, the top accommodating groove 1265 includes a guide portion 1267 and an attachment portion 1268. The guide portion 1267 has a substantially triangular wedge shape, and the depth thereof gradually increases from the vicinity of the opening of the sensing through hole 1264 in the radial direction of the base 126 in a direction away from the sensing through hole 1264. The mounting portion 1268 is formed at the end of the guide portion 1267 farthest from the sensing through hole 1264. The mounting portion 1268 is used for mounting and fixing the light source 1220. The mounting portion 1268 may be an angled rectangular slot including the mounting surface 1266 that is angled relative to the top surface 1260. The light source 1220 is fixedly mounted on the mounting surface 1266, and the light emitting surface of the light source 1220 faces the guide portion 1267. The top surface 1260 is planar. The light source 1220 is positioned lower than the end of the wall closest to the opening of the sensing through hole 1264, i.e., the end of the wall farthest from the receiving unit 124, in the light emitting direction. It can be appreciated that the end of the guiding portion 1267 closest to the sensing through hole 1264 and the opening of the sensing through hole 1264 are kept at a predetermined distance, so that the area around the sensing through hole 1264 is kept as a plane parallel to the bottom of the display device 10, so that the base 126 can be closely attached to the bottom of the display device 10 through the plane area around the sensing through hole 1264, and further prevent the stray light around from entering the sensing through hole 1264 to interfere with sensing.
It is understood that in other modified embodiments, the top surface accommodating groove 1265 may have other shapes, so long as the light source 1220 can be inclined at a preset angle and the emitted sensing light can be allowed to irradiate the sensing area 105 of the display device 10.
As shown in fig. 5, the light intensity of the sensing light emitted by the light source 1220 varies with the light emitting angle, and the light emitted by the light source 1220 along the direction of maximum light intensity is defined as the principal light. In this embodiment, the light source 1220 is an LED light source that emits near infrared light. The light emitting angle range of the light source 1220 is 120 degrees. The light source 1220 emits light from the center in the vertical direction with the maximum luminous intensity, and gradually decreases with increasing angles from the center direction in the range of luminous angles. Thus, the light emitted from the center of the light source 1220 in the vertical direction is defined as a principal light. It is understood that in other alternative embodiments, the luminous intensity of the light source 1220 may have other different distribution patterns. Alternatively, the luminous intensity distribution of the emitted light may be changed into various forms according to the actual requirements by providing a lens structure at the light-emitting surface of the light source 1220.
Referring to fig. 3 and fig. 6, the inclination angle of the light source 1220 may be varied such that the irradiation range of the chief ray covers the entire sensing area 105 of the display device 10. That is, by adjusting the inclination angle, the irradiation position of the chief ray of the light source 1220 can be moved between the boundary of the sensing region 105 at the farthest side from the light source 1220 to the boundary of the sensing region 105 at the nearest side from the light source 1220. It is understood that in the present embodiment, the light source 1220 is disposed on the mounting surface 1266 of the top surface receiving groove 1265, and the change of the inclination angle of the light source 1220 is achieved by changing the inclination angle of the mounting surface 1266.
In this embodiment, the emitting unit 122 includes four light sources 1220 symmetrically distributed about the openings of the sensing through holes 1264, respectively. Each of the two light sources 1220 is symmetrically distributed about an opening point of the sensing through hole 1264. The chief ray of the light source 1220 irradiates the boundary of the sensing region 105 on the side farthest from the light source 1220. The sensing light within a half of the light emitting angle range of each of the light sources 1220 located at one side of the main light may be irradiated to the sensing region 105. The sensing light rays within the half light emitting angle range corresponding to each of the symmetrically distributed light sources 1220 are superimposed in the sensing region 105 to form the total intensity of the sensing light rays in the sensing region 105. The intensity of the sensing light emitted by any one of the light sources 1220 in the sensing region 105 gradually decreases from the boundary of the side of the sensing region, which is farthest from the light source 1220, to the boundary of the side of the sensing region, which is closest to the light source 1220, and the intensity of the sensing light emitted by the other light source 1220, which is symmetrically distributed about the opening of the sensing through hole 1264, in the sensing region 105 is opposite to the intensity of the sensing light emitted by the other light source 1220, so that the intensity distribution of the sensing light in the whole sensing region 105 is substantially uniform after the respective sensing light emitted by each pair of light sources 1220 in the point-symmetrical distribution is superimposed, thereby facilitating sensing imaging.
Referring to fig. 7 and fig. 3, in other modified embodiments, the principal ray of the light source 1220 irradiates the boundary of the sensing region 105 closest to the light source 1220. Similar to the above embodiment, the sensing light within a half light emitting angle range of the other side of the main light of each light source 1220 is irradiated to the sensing region 105. The other light source 1220, which is symmetrically distributed about the opening point of the sensing through hole 1264, emits a substantially opposite sensing light intensity distribution into the sensing region 105, so that the sensing light intensity in the sensing region 105 is uniformly distributed.
It will be appreciated that in other variations, the chief ray of the light source 1220 may also be directed at any location within the range of the sensing region 105. Alternatively, the chief ray of the light source 1220 is irradiated outside the sensing area 105, but it is ensured that at least part of the light within the light emitting angle range is irradiated to the sensing area 105. At this time, uniformity of the sensed light intensity across the sensing region 105 can be achieved by adaptive adjustment of the illumination angle of each light source 1220. Alternatively, the uniformity of the sensing light in the sensing region 105 may be moderately reduced if the sensing requirements are met.
In this embodiment, the sensing through hole 1264 of the base 126 is open at a center of the top surface 1260 of the base 126. The pedestal 126 is disposed below the display device 10 at a position facing the sensing region 105, and the sensing through hole 1264 is open to be aligned with the center of the sensing region 105. Since the light sources 1220 are symmetrically distributed about the openings of the sensing through holes 1264, the light sources 1220 are correspondingly symmetrically distributed about the center of the sensing region 105, which is advantageous for the sensing light emitted from the light sources 1220 to uniformly irradiate the sensing region 105.
It will be appreciated that referring to fig. 2, in other modified embodiments, the base 126 may not face the sensing region 105, and the intensity distribution of the sensing light reflected by the external object in the sensing through hole 1264 is uneven, the sensing light in the sensing through hole 1264 near the sensing region 105 is stronger, and the sensing light in other positions is weaker, but the off-axis lens 1240 may still be used to image the sensing light. Alternatively, an optical system is provided between the base 126 and the bottom of the display device 10, such as: a lens group, a reflecting element, or the like, guides the sensing light reflected by the external object into the sensing through hole 1264 as a whole for sensing.
As shown in fig. 8, the electronic device 1 further comprises a middle frame 14. The middle frame 14 is used for carrying a display panel 102 and a backlight module 104. The middle frame 14 is provided with a mounting through hole 140 corresponding to the sensing region 105 of the display device 10. The sensor module 12 is disposed within the mounting through hole 140. The top surface 1260 of the base 126 is tightly attached to the bottom of the backlight module 104 at a position corresponding to the sensing area 105, so as to avoid interference of the sensing light or other stray light directly emitted from the light source 1220 entering the sensing through hole 1264. The base 126 may be configured with a limiting structure, such as: spacing post, screw thread etc. are clamped, or fixed through the viscose, or fixed through the mode such as setting up the spandrel board in base 126 bottom in installation through-hole 140, this application does not do not specifically limit here. It will be appreciated that, in other modified embodiments, the top surface 1260 of the base 126 may not directly adhere to the bottom of the backlight module 104, but may be formed by a buffer member, such as: gasket, etc., which is tightly adhered to the bottom of the backlight module 104.
It will be appreciated that in other alternative embodiments, only the transmitting unit 122 may be disposed on the base 126, and the receiving unit 124 may be disposed outside the base 126. In this case, the base 126 may be provided with only the top receiving groove 1265 for the emitting unit 122. Alternatively, only the receiving unit 124 may be disposed on the base 126, and the transmitting unit 122 may be disposed outside the base 126. In this case, the base 126 may be provided with only the bottom receiving groove 1263 for the receiving unit 124.
In other variations, as shown in fig. 9, the emitting unit 122 includes two light sources 1220. The two light sources 1220 are distributed point-symmetrically about the sensing through hole 1264. The structure of the base 126 is substantially the same as that of the present embodiment, except that: only one pair of top surface accommodating grooves 1265 symmetrically distributed about the openings of the sensing through holes 1264 are formed on the base 126 corresponding to the two light sources 1220, and the positions of the top surface accommodating grooves 1265 corresponding to the other pair of light sources 1220 are hollowed out to the bottom surface accommodating groove 1263, so as to further realize the light weight of the sensing module 12 under the condition that the number of the light sources 1220 is small.
The electronic device 1 is provided with the sensing module 12 capable of emitting and/or receiving sensing light below the display device 10 to realize an original sensing function in the display area 103 of the display device 10, so that the area of the display area 103 of the electronic device 1 is not required to be occupied, the screen occupation ratio of the electronic device 1 is favorably improved, and the overall look and feel of the main viewing surface of the electronic device 1 is promoted. In addition, the base 126 of the sensing module 12 isolates the transmitting unit 122 and the receiving unit 124 from each other by providing a sensing through hole 1264, so as to reduce interference caused by sensing light directly emitted by the transmitting unit 122 to the receiving unit 124 and improve sensing accuracy.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (11)
1. A base, characterized in that: the base comprises a top surface and a bottom surface which are oppositely arranged, wherein a bottom surface accommodating groove is formed in the bottom surface, a sensing through hole penetrating to the top surface is formed in the bottom surface accommodating groove, a top surface accommodating groove is formed in the top surface, the bottom surface accommodating groove is used for arranging the receiving unit, and the top surface accommodating groove is used for arranging the transmitting unit;
the base is made of a hard material which is light-tight; the display device is defined with a sensing area, the external object is in contact with the display device in the sensing area to reflect sensing light for sensing, the emitting unit emits the sensing light to the sensing area, the top surface accommodating groove comprises an installation surface used for arranging the emitting unit, the installation surface is inclined at a preset angle relative to the top surface, and the inclination angle of the installation surface changes within a preset range to correspondingly enable the irradiation range of the chief ray with the highest luminous intensity in the light emitted by the emitting unit to cover the whole sensing area.
2. The base of claim 1, wherein the base is black in color.
3. The susceptor of claim 1, wherein the inner surface of said top surface receiving recess is coated with a reflective material or formed with a reflective microstructure.
4. The base of claim 1, wherein the top surface receiving groove is open around the sensing through hole opening.
5. The base of claim 1, wherein the top receiving slots are symmetrically distributed about the opening of the sensing through hole.
6. The base of claim 1, wherein: the preset inclination angle of the mounting surface enables the chief ray of the transmitting unit to irradiate the boundary of the furthest side of the sensing area from the transmitting unit.
7. The base of claim 1, wherein: the preset inclination angle of the mounting surface enables the chief ray of the transmitting unit to irradiate the boundary of the nearest side of the sensing area to the transmitting unit.
8. The base of claim 1, wherein: the top surface holding groove includes guiding portion and installation department, the degree of depth of guiding portion is by near the sensing through-hole opening along the radial direction of base deepening gradually in the direction of keeping away from the sensing through-hole, the installation department is seted up the end that guiding portion is farthest from the sensing through-hole, be formed with in the installation department the installation face.
9. A sensing module, characterized in that: the sensing module is arranged below a display device and used for transmitting and receiving sensing light through the display device to sense an external object, and comprises a transmitting unit, a receiving unit and a base according to any one of claims 1-8.
10. The sensor module of claim 9, wherein: the sensing light is infrared or near infrared light, and the wavelength range is 750nm to 1000nm.
11. The sensor module of claim 9, wherein: the transmitting unit is selected from one or a combination of a plurality of LED, OLED, VCSEL and LD.
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| CN201910224667.2A CN110032950B (en) | 2019-03-23 | 2019-03-23 | Base and sensing module |
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| CN201910224667.2A CN110032950B (en) | 2019-03-23 | 2019-03-23 | Base and sensing module |
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| CN110032950B true CN110032950B (en) | 2024-03-29 |
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