CN211124077U - Electronic equipment - Google Patents

Abstract

The utility model is suitable for the fields of optics and electronics, and provides an electronic device for sensing an external object, comprising: a display device for displaying a picture, and the display device has a screen contacting with the external object on the display device. a sensing area; a support plate, arranged below the display device to support the display device, the support plate is provided with a light-transmitting through hole; and an emission unit, arranged under the support plate, the emission unit passes through the The light-transmitting through hole emits sensing light to the portion of the external object outside the sensing area through the display device.

Description

an electronic device

technical field

The utility model belongs to the field of optical technology, in particular to an electronic device.

Background technique

In order to realize various functions of the existing electronic devices, it is often necessary to set functional modules on the main view. For example, in order to use the fingerprint identification function to turn on the electronic device, a fingerprint identification module is set on the main view. However, these functional modules usually need to be separately arranged 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 main view of the electronic device.

Utility model content

The utility model provides an electronic device to solve the above technical problems.

Embodiments of the present invention provide an electronic device for sensing an external object, which includes:

a display device for displaying a picture, the display device has a sensing area in contact with an external object;

a support plate, disposed below the display device to support the display device, and a light-transmitting through hole is formed on the support plate; and

The emission unit is disposed under the support plate, and the emission unit emits sensing light to the part of the external object outside the sensing area through the light-transmitting through hole and through the display device.

In some embodiments, a receiving unit is further included, the receiving unit receives the sensing light returned by the external object for sensing, and the sensing area is an optical path on the display device and the receiving unit to receive the sensing light intersecting area.

In some embodiments, the sensing light emitted by the emitting unit is irradiated to part of the external objects located on the area of the sensing area which occupies less than 30% of the area.

In certain embodiments, the sensing light enters the interior of the external object and propagates toward the sensing area, and exits for sensing at the surface of the external object in contact with the sensing area.

In some embodiments, the part of the external object located outside the sensing area includes a part where the external object is in contact with the surface of the display device at the periphery of the sensing area, and the external object is located outside the sensing area and does not contact the surface of the display device. The part where the surfaces of the display device come into contact.

In certain embodiments, the sensing light may be light at infrared or near-infrared wavelengths ranging from 750 nanometers to 2000 nanometers.

In some embodiments, the display device is a liquid crystal display device, and the liquid crystal display device includes a liquid crystal display panel and a backlight module.

In some embodiments, one or more receiving units are further included, the receiving units receive the sensing light returned via the object to sense the external object.

In some embodiments, the area of the sensing area is larger than the field angle range of a single receiving unit, and the plurality of receiving units respectively receive the returned sensing light within the sensing area for sensing.

In some implementation manners, the transmitting unit and/or the receiving unit is fixed at a position corresponding to the light-transmitting through hole at the bottom of the support plate by a support member.

The electronic device realizes the original sensing function in the display area of the display device by arranging a sensing module capable of emitting and/or receiving sensing light below the display device, and does not need to occupy the display area of the electronic device. It is beneficial to improve the screen ratio of the electronic device and improve the overall look and feel of the main view of the electronic device.

Additional aspects and advantages of embodiments of the present invention will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of embodiments of the invention.

Description of drawings

1 is a schematic front view of an electronic device provided by an embodiment of the present invention, the electronic device includes a sensing module located below a display device.

FIG. 2 is a schematic structural diagram of the display device and the sensing module shown in FIG. 1 .

FIG. 3 is a schematic diagram illustrating the change of the luminous intensity of the light-emitting element of the sensing module in FIG. 2 with the luminous angle.

FIG. 4 is a schematic diagram of the illuminance distribution of the light-emitting elements of the sensing module in FIG. 2 in the overlapping irradiation area.

FIG. 5 is a schematic diagram of the arrangement of one of the light-emitting elements provided by the embodiment of the present invention.

FIG. 6 is a schematic diagram of the illuminance distribution of the light-emitting element in FIG. 5 in the sensing area.

FIG. 7 is a schematic diagram of the optical path of the sensing light of the light-emitting element provided by a modified embodiment of the present invention.

FIG. 8 is a schematic diagram of the optical path of the sensing light of the light-emitting element according to a modified embodiment of the present invention.

Detailed ways

Embodiments of the present invention 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 with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention. In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description, and should not be interpreted as indicating or implying relative importance or indicating the number or number of technical features indicated. Order. Thus, the technical features defined with "first" and "second" may explicitly or implicitly include one or more of the technical features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Detachable connection, or integrated connection; it can be a mechanical connection, an electrical connection or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two elements or between two elements. interaction relationship. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different structures of the invention. In order to simplify the disclosure of the present invention, only specific example components and settings are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may reuse reference numerals and/or reference letters in various instances, such reuse is for simplicity and clarity of presentation of the present disclosure and does not in itself indicate the various embodiments and/or devices discussed. specific relationship between them. In addition, the various specific processes and materials provided in the following description of the present invention are only examples for realizing the technical solutions of the present invention, but those of ordinary skill in the art should realize that the technical solutions of the present invention can also be implemented through the following Other processes and/or other materials described.

Further, the described features and structures may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to enable a thorough understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or with other structures, components, and the like. In other instances, well-known structures or operations have not been shown or described in detail to avoid obscuring the essentials of the present invention.

Please refer to FIG. 1 and FIG. 2 together, an embodiment of the present invention provides an electronic device 1, such as a mobile phone, a notebook computer, a tablet computer, a touch interactive screen, a door, a vehicle, a robot, an automatic CNC machine tools, etc. The electronic device 1 includes a display device 10 and a sensing module 12 disposed below the display device 10 . The electronic device 1 is configured to perform corresponding functions according to the sensing result of the sensing module 12 . The corresponding functions include, but are not limited to, unlocking, paying, starting a preset application program after identifying the user's identity, or obtaining physical parameters such as the user's heart rate and blood oxygen content to determine any of the user's mood and health. a combination of one or more.

The display device 10 includes a display panel 102 and a backlight module 104 . The backlight module 104 is disposed under the display panel 102 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 transmit 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 illuminates an external object through the backlight module 104 and the display panel 102 for sensing. The external object may be located outside the electronic device 1 or in contact with the electronic device 1 . The sensing light returns through the external object and then passes through the display panel 102 and the backlight module 104 and is received by the sensing module 12 for sensing. Here, the sensing light returned by the finger may be reflected by the surface of the finger with fingerprint lines, or the sensing light may be emitted from the surface of the finger with fingerprint lines after entering the interior of the finger through diffuse reflection propagation. Sensing light.

In this embodiment, the sensing light returned via the external object may carry biometric information of the external object, for example, the external object is a user's finger, and the biometric information is the user's fingerprint information. The sensing module 12 is, for example, a fingerprint identification module, which can acquire fingerprint information for identification by sensing the reflected sensing light. The display device 10 is a liquid crystal display device, and the display panel 102 is a liquid crystal display panel.

It can be understood that, in other modified embodiments, the sensing light may also be directly used for sensing the approach of an external object without carrying the biometric information of the external object. For example, when the sensing module 12 senses that the sensed light exceeding the preset threshold is returned, it is considered that an external object is approaching near the electronic device 1 .

The display panel 102 includes a display surface for displaying light emission. A sensing area 105 is defined on the display surface. The external object is in contact with the display panel 102 in the sensing area 105 to emit or reflect the sensing light for sensing. The display surface of the display panel 102 is basically the area for displaying images except for a small part of the space used for wiring, so the display surface of the display panel 102 is the display area of the electronic device 1 101 , the sensing area 105 is located in the display area 101 . The sensing module 12 is disposed below the backlight module 104 at a position corresponding to the sensing area 105 . The sensing module 12 includes a transmitting unit 122 and a receiving unit 124 . The emitting unit 122 emits the sensing light to the external object through the display device 10 . The receiving unit 124 receives the sensing light returned by the external object through the display device 10 for sensing. The sensing area 105 is defined as an area where the display surface of the display panel 102 intersects with the optical path of the receiving unit 124 for receiving the sensing light. It can be understood that the electronic device 1 may also include a cover plate (not shown). The cover plate is disposed on the display surface of the display panel 102 to protect the display panel 102 . The external object can also be sensed by pressing on the cover plate and the position corresponding to the sensing area 105 of the display panel 102 . In this embodiment, the sensing light is used for sensing fingerprints. The sensing light can be light with infrared or near-infrared wavelengths, with a wavelength range of 750 nanometers (Nanometer, nm) to 2000 nm.

The display device 10 further includes a support plate 103 . The support plate 103 is disposed below the backlight module 104 for supporting the backlight module 104 and enhancing the overall strength of the backlight module 104 . The support plate 103 may be a hard metal plate, such as glue iron. Transparent through holes 1030 are respectively formed on the support plate 103 corresponding to the positions where the sensing light is to be emitted and the sensing light is to be received.

The emission unit 122 includes one or more light-emitting elements 120 . The light-emitting element 120 is used for emitting sensing light to the sensing area 105 on the display device 10 . The light emitting element 120 may be a light emitting diode (Light Emitting Diode, LED). It can be understood that, in other modified embodiments, the light-emitting element 120 may also be other types of light-emitting sources, such as: organic light-emitting diodes (Organic Light Emitting Diode, OLED), vertical cavity surface emitting lasers (Vertical Cavity Surface Emitting lasers) Laser, VCSEL), laser diode (Laser Diode, LD) and other suitable light-emitting devices in any one or a combination of more.

The launching unit 122 further includes a support member 121 . The supporting member 121 is used for disposing the light-emitting element 120 on the side surface of the supporting plate 103 opposite to the backlight module 104 . The light-emitting element 120 is disposed at the position of the light-transmitting through hole 1030 on the support plate 103 by the support member 121 , so that the sensing light emitted by the light-emitting element 120 passes through the light-transmitting through hole 1030 and then passes through. The display device 10 illuminates the external object. Specifically, the supporting member 121 is roughly a groove body, including a bottom surface 1210 , a side wall 1211 extending vertically along the periphery of the bottom surface 1210 , and an opening on the other side of the side wall 1211 opposite to the bottom surface 1210 . A ring of flanges 1212 extending from the edge. The light-emitting element 120 is disposed on the bottom surface 1210 . The flange 1212 of the support member 121 is connected to the periphery of the light-transmitting through hole 1030 on the support plate 103 , so that the light-emitting element 120 and the light-transmitting through hole 1030 are arranged correspondingly. The flanges 1212 can be connected around the light-transmitting through hole 1030 by means of adhesive bonding or riveting with a fixing member.

The receiving unit 124 includes a lens 126 and an image sensor 127 . The lens 126 focuses and images the sensing light returned by the external object on the image sensor 127 for fingerprint sensing. The receiving unit 124 may further include a receiving substrate 128 . The lens 126 and the image sensor 127 are disposed on the receiving substrate 128 .

In this embodiment, the receiving unit 124 is configured to receive the optical center of the sensing light, for example, the center of the imaging optical path of the lens 126 , which is aligned or substantially aligned with the center of the sensing area 105 . The center of the light-transmitting through hole 1030 is also aligned or substantially aligned with the center of the sensing region 105 . It can be understood that, in other modified embodiments, the optical center of the receiving unit 124 and/or the center of the light-transmitting through hole 1030 may not be aligned with the center of the sensing area 105, and the receiving unit 124 and the light-transmitting through hole 1030 may not be aligned with the center. The location of the through hole 1030 can enable the receiving unit 124 to receive enough sensing light returned by the external object from the sensing area 105 to achieve the required sensing function. For example: the angle range of the field of view of the receiving unit 124 is large enough so that even if the optical center of the receiving unit 124 is not aligned with the center of the sensing area 105, the sensing light returned from the entire sensing area 105 can be received, or Sensing light with non-uniform distribution of illuminance returned from at least one third of the sensing regions 105 can be received.

It can be understood that, in other modified embodiments, the receiving unit 124 may also omit the lens 126, and directly perform imaging on the image sensor 127 using the principle of pinhole imaging. Alternatively, the receiving unit 124 does not need imaging when performing proximity sensing, and the receiving unit 124 can use a photodiode (PD) instead of the image sensor 127 for sensing.

It can be understood that, in other modified embodiments, the sensing module 12 may further include one or more receiving units 124 . The area of the sensing area 105 is larger than the field angle range of a single receiving unit 124 , and the plurality of receiving units 124 respectively receive the returned sensing light within the range of the sensing area 105 for sensing.

As an example, the external object is a finger, and the fingerprint on the finger includes valleys and ridges. The illuminance of the sensing light irradiated on the surface of the finger in at least a partial area of the sensing area 105 is non-uniformly distributed, so that the illuminance of the sensing light irradiated on the protruding ridges and the concave valleys on the fingerprint, respectively, is not uniform. As such, the light intensity of the sensed light emitted by the valleys and ridges or reflected back to be received by the receiving unit 124 is significantly different. The receiving unit 124 can form clear light and dark stripes with high contrast corresponding to the valleys and ridges on the fingerprint, which is beneficial to the subsequent fingerprint comparison and identification. In order to be able to form a relatively clear striped pattern of valleys and ridges, the difference in illuminance of the sensing light irradiating the positions of the valleys and the ridges is greater than 30%. The spacing between adjacent valleys and ridges on the fingerprint ranges from 7-10 microns. Therefore, the non-uniformly distributed illuminance formed by the sensing light on the finger surface in at least part of the sensing area 105 means that the difference in illuminance irradiated on adjacent valleys and ridges on the finger surface is greater than 30%, that is, the average The illuminance difference in the range of 7-10 microns interval is greater than 30%.

The receiving unit 124 needs to obtain enough clear fingerprint images in the sensing area 105 to perform effective identification. Therefore, the area of the light-emitting element 120 formed on the sensing area 105 with non-uniform distribution of illuminance accounts for The proportion of the total area of the sensing region 105 needs to be equal to or greater than one third.

One or more light-emitting elements 120 on the emission unit 122 can be lit at the same time for illumination, or one or more light-emitting elements 120 can be divided into different combinations, and the light-emitting elements 120 belonging to the same combination can emit light simultaneously. The light is measured to the sensing area 105, and the light-emitting elements 120 of different combinations emit the sensing light to the sensing area 105 at different time intervals. This is not limited in the present invention, and it is only required that the emitting unit 122 illuminates the sensing area each time. The area of the non-uniform distribution of illuminance formed on the measuring area 105 may be at least one third of the total area of the sensing area 105 . It can be understood that when a plurality of light-emitting elements 120 simultaneously emit sensing light to illuminate the sensing area 105, the illuminance of the sensing light illuminating the sensing area 105 should be the same as the plurality of light-emitting elements 120 illuminated at the same time. The sum of the illuminances formed in the sensing area 105 respectively.

In the case where the light-emitting elements 120 are irradiated in different time periods in different combinations, the receiving unit 124 may combine multiple images respectively formed by receiving the sensing light in the corresponding different time periods into one image to extract features point for comparison. The receiving unit 124 may also extract feature points from multiple images formed by the light-emitting element 120 illuminated in different time periods to perform comparison and identification.

It can be understood that, in other modified embodiments, the receiving unit 124 may also process the received sensed light in other ways to finally realize the function of comparison and identification, which is not limited in the present invention.

The light emitting elements 120 on the emitting unit 122 may be distributed asymmetrically with respect to the center of the sensing area 105 . The light emitting elements 120 on the emitting unit 122 may also be symmetrically distributed with respect to the center of the sensing region 105 , and the symmetrical manners include but are not limited to rotational symmetry and central symmetry.

As shown in FIG. 3 , the luminous intensity of the sensing light emitted by the light-emitting element 120 varies with the light-emitting angle and has a preset light-emitting angle, which is defined as the light emitted by the light-emitting element 120 along the direction of maximum light-emitting intensity. Light, the light at the outermost boundary of the emission angle range is the boundary light. In this embodiment, the light-emitting element 120 is an LED light source that emits infrared or near-infrared light. The variation range of the light-emitting angle of the light-emitting element 120 is 100 degrees to 160 degrees. The luminous intensity of the light emitted from the light-emitting element 120 in the vertical direction from the center is the highest, and the luminous intensity gradually decreases as the angle deviated from the center direction increases within the luminous angle. Therefore, the light emitted from the light-emitting element 120 in the vertical direction from the center is the main light. The light whose light-emitting angle is deviated from the vertical direction by 60 degrees is the boundary light and has the minimum light-emitting intensity. It can be understood that, in other modified embodiments, the luminous intensity of the light-emitting element 120 may have other different distribution forms. Alternatively, the luminous intensity distribution of the emitted light can be changed into various forms according to actual needs by arranging optical elements such as lenses at the light-emitting surface of the light-emitting element 120 .

It can be seen from the luminous intensity distribution characteristics of the above-mentioned light-emitting elements 120 that, as shown in FIG. 4 , the illuminance of the plurality of illumination areas formed when the plurality of light-emitting elements 120 distributed symmetrically with respect to the center of the sensing area 105 simultaneously emits sensing light is also related to The center of the sensing area 105 is symmetrically distributed, so the plurality of illumination areas formed by the plurality of light emitting elements 120 symmetrically distributed with respect to the center of the sensing area 105 overlap each other in the sensing area 105 due to the mutual illuminance also related to the sensing area. The centers of the sensing areas 105 are symmetrically distributed and complement each other, so that the overall illuminance of the overlapping portion tends to be uniform, while the illuminance of the non-overlapping portions of the plurality of illumination areas in the sensing area 105 still gradually increases with the illumination angle of the corresponding light-emitting element 120 . Variety. Therefore, when the plurality of light-emitting elements 120 distributed symmetrically with respect to the center of the sensing area 105 simultaneously emit sensing light to the sensing area 105 , the overlapping areas of the multiple illumination areas respectively formed in the sensing area 105 occupy the sensing area. The proportion of the total area of the sensing area 105 should be less than two-thirds, so as to satisfy the ratio of the area of the non-uniform distribution of illuminance formed by the light-emitting element 120 on the sensing area 105 to the total area of the sensing area 105 equal to or greater than three. one percent of the requirements.

The plurality of light-emitting elements 120 may be divided into different combinations according to preset rules. For example, the light-emitting elements 120 symmetrically distributed with respect to the center of the sensing area 105 are divided according to the distance from the center of the sensing area 105 , and the light-emitting elements 120 having the same distance from the center of the sensing area 105 are divided into the same combination. During sensing, the light-emitting elements 120 belonging to the same combination are lit at the same time to emit sensing light to the sensing area 105 , while the light-emitting elements 120 belonging to different combinations are respectively lit at different time periods to emit sensing light to the sensing area 105. It can be understood that, on the premise that the non-uniform illuminance distribution area formed on the sensing area 105 by each irradiation accounts for at least one third of the total area of the sensing area 105, the light-emitting elements 120 in different combinations can also emit light simultaneously. The light is sensed to the sensing area 105 . It can be understood that, in other modified embodiments, the light-emitting elements 120 can also be divided and combined according to other principles, which is not limited in the present invention.

In this embodiment, please refer to FIG. 2 , FIG. 5 and FIG. 6 together, the emitting unit 122 includes a pair of light emitting elements 120 symmetrically distributed with respect to the center of the sensing area 105 . The pair of light-emitting elements 120 symmetrically distributed with respect to the center of the sensing area 105 through the corresponding light-transmitting through holes 1030 on the support plate 103 respectively form two illumination areas in the sensing area 105 that do not overlap with each other. The two irradiation areas may be separated by a preset distance or the boundaries of the two may be exactly tangent. Since the illuminance formed by the light-emitting elements 120 in the respective irradiation areas will show a non-uniform distribution with the gradual change of the irradiation angle, the pair of light-emitting elements 120 symmetrically distributed with respect to the center of the sensing area 105 can simultaneously emit sensing light to the sensing area 105 . It can be understood that, the pair of light-emitting elements 120 can also emit sensing light to the sensing area 105 at different time periods respectively. Correspondingly, the receiving unit 124 receives the sensing light returned by the external object in corresponding different time periods for sensing.

In other modified embodiments, as shown in FIG. 7 , the pair of light-emitting elements 120 symmetrically distributed with respect to the center of the sensing region 105 are respectively formed to cover the entire The illuminated area of the sensing area 105 . Therefore, the pair of light-emitting elements 120 respectively emit sensing light to the sensing area 105 at different time periods. In the figure, different line shapes are used to schematically represent the sensing light emitted in different time periods. For example, the sensing light emitted by the light-emitting element 120 on the left is represented by a dotted line, and the sensing light emitted by the light-emitting element 120 on the right is represented by a dotted line. Rays are represented by solid lines. Correspondingly, the receiving unit 124 receives the sensing light returned by the external object in corresponding different time periods for sensing.

In other modified embodiments, as shown in FIG. 8 , the sensing light emitted by the one or more light-emitting elements 120 passes through the corresponding light-transmitting through holes 1030 on the support plate 103 and then irradiates an external object, such as a finger , the part outside the sensing area 105, for example: the finger is located at the outer periphery of the sensing area 105 and the part that is in contact with the display surface, or the finger is located outside the sensing area 105 and does not contact the display surface part. The sensing light enters the interior of the external object from the part of the external object located outside the sensing area 105 and then propagates to the sensing area 105 in the external object, and at the surface of the external object that is in contact with the sensing area 105 The emitted light is then received by the receiving unit 124 through the display device 10 for sensing.

When the sensing light is emitted from the surface of the external object, a corresponding texture image is formed due to the difference between the concave and convex texture on the surface of the external object and the surface of the sensing area 105 . For example, taking an external object as an example of a finger, the protruding ridges in the fingerprint are in direct contact with the surface of the sensing area 105, so that the sensing light emitted from the ridges of the fingerprint directly enters the display device 10 to form bright lines with more transmitted light flux . The concave valley in the fingerprint has a gap with the surface of the sensing area 105 , thereby reducing the luminous flux of the sensing light emitted from the location of the valley passing through the display device 10 , forming a dark pattern with less luminous flux. Thus, when the sensing light is emitted from the inside of the finger and then passes through the display device 10, a light and dark stripe image corresponding to the fingerprint pattern is formed. The receiving unit 124 receives the sensing light radiated from the inside of the finger through the surface of the finger in contact with the sensing area 105 to form the fingerprint pattern image for fingerprint recognition sensing. Since the emission and reception of the sensing light respectively use different optical paths, the stray light reflected back when the sensing light passes through the layers of the display device 10 during emission will not be received by the receiving unit 124 and thus affect the sensing. Improved sensing accuracy.

It can be understood that, in other modified embodiments, the sensing light emitted by the light-emitting element 120 may not only be irradiated to an external object, such as a finger, which is located outside the sensing area 105 , but may also be irradiated to the external object. The portion located on the area of the sensing area 105 occupying a predetermined area ratio. After the sensing light enters the interior of the external object, it is emitted from the part of the sensing area 105 that is not illuminated by the sensing light, and is then received by the receiving unit 142 through the display device 10 for sensing. The light-emitting element 120 illuminates part of the external objects located in the area of the sensing area 105 with an area ratio of less than 30%, that is, the sensing light entering the external objects may not be sensed from the sensing area 105 At least 70% of the area of the area illuminated by the light is emitted. Since the receiving unit 142 only needs the fingerprint image within 70% of the sensing area 105 to complete the identification and sensing, the restriction on the range of the light-emitting element 120 irradiated to the finger portion can be relaxed, which has higher applicability.

It can be known from the above-mentioned embodiments that the sensing light emitted by the light-emitting element 120 is projected on the display surface of the display panel 102 through the light-transmitting through holes 1030 opened on the support plate 103 for sensing. Therefore, by adjusting the positions of the light-transmitting through holes 1030 and the light-emitting elements 120 relative to the sensing area 105 and adjusting the opening size of the light-transmitting through holes 1030 , the illumination of the sensing light on the display panel 102 can be flexibly controlled The relative positional relationship between the area and the sensing area 105, such as: illuminating the entire sensing area 105, illuminating a part of the sensing area 105, or illuminating the area outside the sensing area 105, so as to achieve different sensing corresponding to various illumination situations. measurement method.

The electronic device 1 realizes the original sensing function in the display area 101 of the display device 10 by arranging the sensing module 12 capable of emitting and/or receiving sensing light below the display device 10 , and does not need to occupy the electronic device 1 The area of the display area 101 of 100% is beneficial to increase the screen ratio of the electronic device 1 and improve the overall look and feel of the main view of the electronic device 1 .

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc. A particular feature, structure, material, or characteristic described in this embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. 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 above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. An electronic device for sensing an external object, characterized in that: comprising: a display device for displaying a picture, the display device has a sensing area in contact with an external object; a support plate, disposed below the display device to support the display device, and a light-transmitting through hole is formed on the support plate; and The emission unit is disposed under the support plate, and the emission unit emits sensing light to the part of the external object outside the sensing area through the light-transmitting through hole and through the display device. 2 . The electronic device according to claim 1 , further comprising a receiving unit, the receiving unit receives the sensing light returned by an external object for sensing, and the sensing area is on the display device. 3 . An area that intersects with the optical path of the receiving unit to receive the sensed light. 3 . The electronic device according to claim 1 , wherein the sensing light emitted by the emitting unit is irradiated to some external objects located on an area of the sensing area that occupies less than 30% of the area. 4 . 4. The electronic device according to claim 1 or 3, wherein the sensing light enters the interior of the external object and propagates toward the sensing area, and exits at the surface of the external object in contact with the sensing area for use in detect. 5 . The electronic device according to claim 1 , wherein the part of the external object located outside the sensing area includes the part where the external object is in contact with the surface of the display device on the periphery of the sensing area and the part where the external object is located. 6 . The part outside the sensing area that is not in contact with the surface of the display device. 6 . The electronic device of claim 1 , wherein the sensing light can be light with infrared or near-infrared wavelengths, and the wavelength range is 750 nanometers to 2000 nanometers. 7 . 7 . The electronic device according to claim 1 , wherein the display device is a liquid crystal display device, and the liquid crystal display device comprises a liquid crystal display panel and a backlight module. 8 . 8 . The electronic device of claim 1 , further comprising one or more receiving units, the receiving units receiving the sensing light returned by the object to sense the external object. 9 . 9 . The electronic device according to claim 8 , wherein the area of the sensing area is larger than the field of view range of a single receiving unit, and the plurality of receiving units respectively receive the returned signals within the sensing area. 10 . Sensing light for sensing. 10 . The electronic device according to claim 2 , wherein the transmitting unit and/or the receiving unit are fixed at positions corresponding to the light-transmitting through holes at the bottom of the support plate through a supporting member. 11 .

Images