CN107064948B - Sensor module and mobile terminal - Google Patents

Abstract

An embodiment of the present invention provides a sensor module and a mobile terminal. The sensor module includes a signal transmitter, a first signal receiver, a second signal receiver, and an ambient brightness sensor; the detection light emitted by the signal transmitter passes through an obstacle A first signal and a second signal are formed after reflection, the first signal receiver is used to receive the first signal, the second signal receiver is used to receive the second signal; the ambient brightness sensor is used to detect the intensity of ambient light. When the obstacle is far away from the mobile terminal, the sensitivity of the second signal receiver is higher; when the obstacle is close to the mobile terminal, the sensitivity of the first signal receiver is higher. Therefore, no matter whether the obstacle is far or near to the mobile terminal, the sensor module has higher sensitivity, so that the detection accuracy of the sensor module can be improved.

Description

Sensor module and mobile terminal

technical field

The invention relates to the field of communication technology, in particular to a sensor module and a mobile terminal.

Background technique

With the rapid development of terminal technology, smart terminals are becoming more and more popular and become an indispensable device in people's life. People can learn, entertain and so on through smart terminals.

In the prior art, the proximity sensing module of the smart terminal is usually realized by using an infrared transmitter and an infrared receiver. The infrared emitter emits infrared light, which is reflected by the barrier to form a reflected light. After receiving the reflected light, the infrared receiver judges whether the smart terminal is close to or far away from the barrier according to the intensity value of the reflected light.

However, in actual use, if the distance between the infrared emitter and the infrared receiver is too far, the reflected light cannot enter the infrared receiver when the blocking object is close. When the distance between the infrared transmitter and the infrared receiver is too close, and the smart terminal is too far away from the obstacle, part of the infrared rays emitted by the infrared transmitter will directly enter the infrared receiver through the diffraction inside the smart terminal, The base value detected by the infrared receiver is larger; and because the barrier is far away from the infrared receiver, the reflected light after entering the infrared receiver makes the light intensity detected by the infrared receiver change very little. Therefore, the sensitivity of the infrared receiver is very low, and misjudgment or missed judgment is prone to occur.

It can be known from the above that the detection sensitivity of the proximity sensing component of the existing mobile terminal is low, and judgment errors or failures are prone to occur.

Contents of the invention

Embodiments of the present invention provide a sensor module and a mobile terminal, which can improve the detection accuracy of the sensor module.

An embodiment of the present invention provides a sensor module, including a signal transmitter, a first signal receiver, a second signal receiver, and an ambient brightness sensor;

The signal transmitter and the first signal receiver are packaged to form a first package;

The second signal receiver is packaged with the ambient brightness sensor to form a second package;

The detection light emitted by the signal transmitter is reflected by the barrier to form a first signal and a second signal, the first signal receiver is used to receive the first signal, and the second signal receiver is used to receive the second signal;

The ambient brightness sensor is used to detect the ambient light intensity.

An embodiment of the present invention also provides a mobile terminal, including a cover plate and a sensor module disposed on one side of the cover plate, the cover plate and the sensor module are spaced apart, and the sensor module is the above-mentioned sensor module.

The sensor module in the embodiment of the present invention receives the first signal and the second signal respectively through the first signal receiver and the second signal receiver; when the obstacle is far away from the mobile terminal, the second signal receiver and the signal transmitter The distance is far, at this time, the signal directly entering the second signal receiver from the internal diffraction of the mobile terminal is less, and the reflected signal enters the second signal receiver more, so the signal strength detected by the second signal receiver changes greatly. Higher sensitivity; when the obstacle is closer to the mobile terminal, the distance between the first signal receiver and the signal transmitter is closer, and more reflected signals enter the first signal receiver, so the signal strength detected by the first signal receiver changes Larger, higher sensitivity; therefore, no matter whether the obstacle is near or far from the mobile terminal, the sensor module has higher sensitivity, so that the detection accuracy of the sensor module can be improved.

Description of drawings

FIG. 1 is a schematic structural diagram of a mobile terminal in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the first structure of the panel assembly in the embodiment of the present invention.

Fig. 3 is a second structural schematic diagram of the panel assembly in the embodiment of the present invention.

Fig. 4 is a schematic diagram of the third structure of the panel assembly in the embodiment of the present invention.

Fig. 5 is a schematic diagram of the fourth structure of the panel assembly in the embodiment of the present invention.

FIG. 6 is a schematic diagram of a fifth structure of the panel assembly in the embodiment of the present invention.

Fig. 7 is a schematic diagram of the sixth structure of the panel assembly in the embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "under" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Please refer to FIG. 1 , which is a schematic structural diagram of a mobile terminal 1000 in an embodiment of the present invention. The mobile terminal 1000 is, for example, an electronic device such as a mobile phone or a tablet computer. It can be understood that the mobile terminal 1000 includes but not limited to examples of this embodiment.

The mobile terminal 1000 includes a panel assembly 100 and a housing 200 . The panel assembly 100 is disposed on and connected to the casing 200 . It can be understood that the mobile terminal 1000 may also include a receiver. Correspondingly, the non-display area 100a of the panel assembly 100 is provided with an opening 300 for the receiver to emit sound. Display area 100a. The display area 100b of the panel assembly 100 can be used for displaying images or for users to touch and manipulate.

Wherein, the panel assembly 100 may be a touch panel assembly, a panel assembly or a mobile terminal panel assembly with other functions, and the like.

Please refer to FIG. 2 . FIG. 2 is a first structural diagram of the panel assembly 100 in the embodiment of the present invention. The panel assembly 100 includes a sensor module 11 , a cover assembly 12 and a control circuit 13 . The sensor module 11 is disposed on one side of the inner surface of the cover assembly 12 , and the sensor module 11 is spaced apart from the cover assembly 12 . The control circuit 13 is communicatively connected with the sensor module 11 and the cover assembly 12 . In this embodiment, the control circuit 13 is a main board, and the sensor module 11 is fixedly arranged on the main board.

Wherein, the sensor module 11 includes a first signal transmitter 111 , a first signal receiver 112 and a second signal receiver 113 .

The signal transmitter 111 is used for transmitting signals to the outside. The signal receiver 112 and the signal receiver 113 are used for receiving signals reflected by external objects.

The above-mentioned signals may be optical signals such as infrared rays and lasers, or sound wave signals such as ultrasonic waves. In the following, only the signal is an optical signal, the signal transmitter is an optical transmitter, and the signal receiver is an optical receiver for illustration.

In some embodiments, the first light emitter 111 is used to emit detection light with a wavelength greater than 850nm, such as infrared light, which is an infrared emitter. For example, the first light emitter 111 may be an infrared emitting LED (Light Emitting Diode, light emitting diode).

Correspondingly, the first light receiver 112 may be an infrared light receiver for receiving the low beam signal formed after the detection light is reflected by the barrier 70 . The barrier 70 is generally a human face, and is applied to a scene when the mobile terminal approaches or moves away from the user's face during a call.

Correspondingly, the second light receiver 113 may be an infrared light receiver for receiving the high beam signal formed after the detection light is reflected by the barrier 70 .

Wherein, the low beam signal indicates that the light receiver reflected by the barrier is relatively close to the first light transmitter 111, and the high beam signal indicates that the light receiver reflected by the barrier is far away from the first light transmitter 111. The first light emitter 111 is far away.

The distance between the first light receiver 112 and the first light emitter 111 is smaller than the distance between the second light receiver 113 and the first light emitter 111 . Therefore, when the cover assembly 12 is far away from the blocking object, the light intensity change detection of the second light receiver 113 is more sensitive. When the cover assembly 12 is closer to the blocking object, the light intensity change detection of the first light receiver 112 is more sensitive. Therefore, in a specific application, the mobile terminal can judge whether the mobile terminal is far away or close according to the light intensity values of the reflected light received by the first light receiver 112 and the second light receiver 113 at the same time, which can greatly improve the judgment. The accuracy is conducive to improving the user experience.

In this embodiment, the first light transmitter 111 and the first light receiver 112 can be integrated in a first integrated chip to form a two-in-one chip. Of course, it can also be separately configured as two independent chips.

Wherein, the cover plate assembly 12 includes a cover plate 121, a first adhesive layer 122 disposed on the inner surface of the cover plate 121, and a second adhesive layer 123 disposed on the side of the first adhesive layer 122 away from the cover plate 121 . The first adhesion layer 122 completely covers the second adhesion layer 123 . Wherein, the first adhesion layer 122 and the second adhesion layer 123 constitute an adhesion layer.

The first adhesive layer 122 and the second adhesive layer 123 are arranged to achieve the effect of hiding the internal structural components of the mobile terminal 1000 and the second adhesive layer 123 . That is, when the user observes the outside of the cover plate 121 , only the first adhesion layer 122 can be seen, but the second adhesion layer 123 cannot be seen.

Wherein, the cover plate 121 may be a transparent glass cover plate. In some embodiments, the cover plate 121 may be a glass cover plate made of materials such as sapphire.

Wherein, the adhesion layer may be an ink layer, or a coating formed of other materials. In the following, only the adhesion layer is an ink layer, the first adhesion layer is a light-transmitting ink layer, and the second adhesion layer is a light-shielding ink layer for illustration.

In this embodiment, the light-transmitting ink layer 122 is a light-transmitting ink layer for transmitting most light. The light transmittance of the ink layer can be set according to actual needs. Generally, the visible light (such as visible light with a wavelength of 550nm) transmittance of the light-transmissive ink layer 122 is between 2%-10%, and the optical signal of the proximity sensor (such as a wavelength of 550nm) 850nm infrared) transmittance greater than or equal to 80%.

The light-transmitting ink layer 122 may include several light-transmitting ink sub-layers 1221 . For example, in this embodiment, the light-transmitting ink layer 122 has three light-transmitting ink sub-layers 1221, and each light-transmitting ink sub-layer 1221 is formed by spraying or printing a white ink. Of course, the white ink is only an example, and the light-transmitting ink layer 122 can also be designed in other colors according to different aesthetic requirements.

The light-shielding ink layer 123 is a light-shielding ink layer for blocking most light. The light-shielding ink layer 123 can be formed by spraying or printing black ink. The light-shielding ink layer 123 includes a first region and a second region. The light transmittance of the first area is greater than the light transmittance of the second area. The first region can be understood as a light-transmitting region for transmitting most light. The second area can be understood as a light-shielding area, which is used to block most of the light.

Wherein, the light-transmitting ink layer 122 covers the first area on the light-shielding ink layer 123 .

Wherein, the transmittance of the light-transmitting ink layer 122 to light is greater than the transmittance of the light-shielding ink layer 123 to light.

The aforementioned transmittance may include transmittance to infrared rays, transmittance to laser light, and transmittance to visible light.

In some embodiments, a first light through hole 124 and a second light through hole 125 are opened on the light shielding ink layer 123 . The first light hole 124 and the second light hole 125 are used for passing light. The first light hole 124 and the second light hole 125 form a first area, and the area on the light-shielding ink layer 123 other than the first light hole 124 and the second light hole 125 is a second area. It can be understood that the first light hole 124 and the second light hole 125 may also be filled with a light-transmitting material, and the color of the light-transmitting material may be the same as that of the light-transmitting ink layer 122 . Wherein, the first light through hole 124 may include a first light emitting hole 1241 and a first light receiving hole 1242 which are separated. The first light emitter 111 is opposite to the first light emitting hole 1241 , and emits detection light through the first light emitting hole 1241 . The first light receiver 112 is opposite to the first light receiving hole 1242 and receives the reflected light of the detection light through the first light receiving hole 1242 .

The second light hole 125 is opposite to the second light receiver 113 , and the second light receiver 113 receives the reflected light of the detection light through the second light hole 125 .

Wherein, the shapes of the first light emitting hole 1241 , the first light receiving hole 1242 and the second light passing hole 125 can be set according to actual needs. For example, it may be in the shape of a circle, a rectangle, a rounded rectangle, or the like. In this embodiment, in order to improve the ability of the first light receiver 112 and the second light receiver 113 to receive light signals and improve the sensitivity of the sensor, the opening area of the first light receiving hole 1242 and the second light through hole 125 can be made larger than that of the first light receiving hole 1242 and the second light passing hole 125. The opening area of a light emission hole 1241 .

Understandably, as shown in FIG. 3 , in some other embodiments, the first light through hole 124 can also be a larger hole, which simultaneously supplies the first light transmitter 111 and the first light receiver 112 use.

In this embodiment, the control circuit 13 is connected in communication with the first light transmitter 111, the first light receiver 112 and the second light receiver 113, and the first light transmitter 111, the first light receiver 112 and The second light receivers 113 are all fixedly disposed on the main board.

For example, when the panel assembly 100 is applied to a mobile phone, since the first light receiver 112 and the second light receiver 113 are at different distances from the first light emitter 111, the first light receiver 112 is closer to the The first light emitter 111, when the panel assembly 100 is close to the barrier, the second light receiver 113 receives little light due to the distance from the first light emitter 111, and the light intensity changes The value does not change much with distance. When the panel assembly 100 is far away from the barrier, because the reflected light is weak, the light emitted by the first light emitter 111 directly enters the first light receiver 112 by internal reflection, and the first light receiver 112 receives The base value of the light intensity value is larger, and the cover plate is farther away from the barrier, and the light intensity value of the reflected light is smaller, so the reflected light received by the first light receiver has no obvious change in the detected light intensity . The distance between the second light receiver 113 and the first light transmitter 111 is relatively far from the first light receiver 112 , so the light emitted by the first light transmitter 111 enters the second light receiver 113 through internal reflection. There are few parts, the basic light intensity value is small, and the light intensity change is relatively large after the reflected light enters the second light receiver 113 .

During the call process of the mobile terminal, the control circuit 13 controls the first light transmitter 111 to emit detection light, and judges the installation according to the light intensity value of the reflected light received by the first light receiver 112 and the second light receiver 113. Whether the mobile terminal with the panel assembly 100 is close to or far from the face. When it is judged to be far away from the face, the cover assembly 12 is controlled to turn on the screen, and when it is judged to be close to the face, the screen of the cover assembly 12 is controlled to turn off.

Wherein, when the light intensity value received by the first light receiver 113 reaches the first proximity threshold or the light intensity value received by the second light receiver 113 reaches the second proximity threshold, it is determined that the mobile terminal is close to the face. When the light intensity value received by the first light receiver 113 reaches the first distance threshold and the light intensity value received by the second light receiver 113 reaches the second distance threshold, it is determined that the mobile terminal is far away from the face.

Referring to FIG. 4 , FIG. 4 is another structural schematic diagram of the panel assembly 100 in the embodiment of the present invention. The panel assembly 100 includes a sensor module 21 , a cover assembly 22 and a control circuit 23 . The sensor module 21 is disposed on one side of the inner surface of the cover assembly 22 , and the sensor module 21 is spaced apart from the cover assembly 22 . The control circuit 23 is communicatively connected with the sensor module 21 and the cover assembly 22 . In this embodiment, the control circuit 23 is a main board, and the sensor module 21 is fixedly arranged on the main board.

Wherein, the sensor module 21 includes a first light transmitter 211 , a first light receiver 212 , a second light receiver 213 , a second light transmitter 214 , a first ambient brightness sensor 215 and a second ambient brightness sensor 216 .

It can be understood that, in some embodiments, the sensor module 21 may also include a circuit board. The first light transmitter 211 , the first light receiver 212 , the second light receiver 213 , the second light transmitter 214 , the first ambient brightness sensor 215 and the second ambient brightness sensor 216 may be disposed on the circuit board.

Wherein, the first light emitter 211 and the second light emitter 214 are both used to emit invisible light with a wavelength greater than 850nm, such as infrared light.

Both the first light emitter 211 and the second light emitter 214 are infrared light emitters. Both the first light receiver 212 and the second light receiver 213 can be infrared light receivers. The first light receiver 212 is used for receiving the low beam signal formed after the detection light is reflected by the barrier. The second light receiver 214 is used for receiving the high beam signal formed after the detection light is reflected by the barrier. The distance between the first light receiver 212 and the first light emitter 211 is smaller than the distance between the second light receiver 213 and the first light emitter 211 . Wherein, the low beam signal indicates that the light receiver reflected by the barrier is relatively close to the first light transmitter 211, and the high beam signal indicates that the light receiver reflected by the barrier is far away from the first light transmitter 211. The first light emitter 211 is far away.

The distance between the first light receiver 212 and the first light emitter 211 is smaller than the distance between the second light receiver 213 and the first light emitter 211 . Therefore, when the first light emitter 211 is used as the sender of the detection light, and when the panel assembly 100 is far away from the barrier, the detection of the light intensity change of the second light receiver is more sensitive; when the panel assembly 100 When the distance to the blocking object is closer, the detection of the light intensity change of the first light receiver is more sensitive. When the second light emitter 214 is used as the sender of the detection light, and when the panel assembly 100 is far away from the barrier, the light intensity change detection of the second light receiver 214 is more sensitive; when the panel assembly 100 is far away from When the obstacle is closer, the first light receiver 212 is more sensitive in detecting the light intensity change.

In this embodiment, the control circuit 23 can select one of the first light emitter 211 and the second light emitter 214 as the sender of the detection light, usually, the first light emitter 211 is used as the detection light When the control circuit 23 detects that the first light emitter 211 is abnormal or damaged, the second light emitter 214 is used as the sender of the detection light.

In some embodiments, the first light emitter 211 , the first light receiver 212 and the first ambient brightness sensor 215 can be integrated on one integrated chip to form a three-in-one chip. The second light transmitter 214 , the second light receiver 213 and the second ambient brightness sensor 216 may be integrated on another integrated chip to form another three-in-one chip.

In some embodiments, as shown in FIG. 5 , the sensor module 21 may only include a light emitter 211 , a first light receiver 212 , a second light receiver 213 and an ambient brightness sensor 216 . The light transmitter 211 , the first light receiver 212 , the second light receiver 213 and the ambient brightness sensor 216 can be arranged on a circuit board.

The light transmitter 211 and the first light receiver 212 may be integrated on an integrated chip to form a two-in-one chip. The second light receiver 213 and the ambient brightness sensor 216 may be integrated on another integrated chip to form another two-in-one chip. The above two two-in-one chips can be arranged on the circuit board at intervals.

The distance between the two two-in-one chips is between 2mm and 12mm. The distance is the distance between the geometric centers of the two 2-in-1 chips.

The cover assembly 22 includes a cover 221 , a light-transmitting ink layer 222 disposed on an inner surface of the cover 221 , and a light-shielding ink layer 223 disposed on a side of the light-transmitting ink layer 222 away from the cover 221 . Wherein, the light-transmitting ink layer 122 and the light-shielding ink layer 123 constitute an ink layer.

Wherein, the light-transmitting ink layer 222 may include multiple light-transmitting ink sub-layers 2221. For example, in this embodiment, the light-transmitting ink layer 222 has three light-transmitting ink sub-layers 2221, and each light-transmitting ink sub-layer 2221 are formed by white ink spraying or printing. Of course, the white ink is only an example, and the light-transmitting ink layer 222 can also be designed in other colors according to different aesthetic requirements.

The light-shielding ink layer 223 can be formed by spraying or printing black ink. A first light hole 224 and a second light hole 225 are formed on the light-shielding ink layer 223 .

In this embodiment, the light-transmitting ink layer 222 located on the light-shielding ink layer 223 may be a light-transmitting ink layer. The light transmittance of the ink layer can be set according to actual needs. Generally, the visible light (such as the visible light with a wavelength of 550nm) transmittance of the light-transmissive ink layer 222 is between 2%-10%, and the light signal of the proximity sensor (such as with a wavelength of 850nm infrared) transmittance greater than or equal to 80%.

Wherein, the first light through hole 224 may include a first light emitting hole 2241 and a first light receiving hole 2242 which are separated. The first light emitter 211 is opposite to the first light emitting hole 2241 , and emits detection light through the first light emitting hole 2241 . The first light receiver 212 and the first environment brightness sensor 215 are opposite to the first light receiving hole 2242, the first light receiver 212 receives the reflected light of the detection light through the first light receiving hole 2242, the first environment The brightness sensor 215 detects the ambient light intensity through the first light receiving hole 2242 .

The second light through hole 225 may include a second light emitting hole 2251 and a second light receiving hole 2252 which are separated. The second light emitter 214 is opposite to the second light emitting hole 2251 and emits detection light through the second light emitting hole 2251 . The second light receiving hole 2252 is opposite to the second light receiver 213 and the second environment brightness sensor 216, the second light receiver 213 receives the reflected light of the detection light through the second light receiving hole 2252, the second environment The brightness sensor 216 detects the ambient light intensity through the second light receiving hole 2252 .

Understandably, as shown in FIG. 6 , in some other embodiments, the first light through hole 224 can also be a larger hole, which simultaneously supplies the first light emitter 211 and the first light receiver 212 And the first ambient brightness sensor 215 is used.

The second light hole 225 can also be a larger hole, which is used by the second light emitter 214 , the second light receiver 213 and the second ambient brightness sensor 216 at the same time.

Taking the panel assembly 100 applied to a mobile phone as an example for illustration, under normal circumstances, the control circuit 23 selects the first light emitter 211 as the sender of the detection light, and the second light emitter 214 does not work.

In some embodiments, as shown in FIG. 7 , the cover assembly 22 may only include a cover 221 and a light-transmitting ink layer 222 disposed on the inner surface of the cover 221 .

Wherein, the transparent ink layer 222 can be formed by spraying or printing special ink. For example, the specialty ink may be an infrared ink (IR ink). The transmittance of IR ink to infrared rays is greater than or equal to 80%, so it can pass through most infrared rays. The appearance of IR ink is black ink.

Wherein, a functional area can be set on the light-transmitting ink layer 222 at a position corresponding to the ambient brightness sensor 216, and ink that can transmit ambient light can be sprayed or printed on the functional area. This functional area is used to pass ambient light so that the ambient brightness sensor 216 detects the ambient brightness.

Referring to FIG. 6 again, since the first light receiver 212 and the second light receiver 213 are at different distances from the first light transmitter 211 , the first light receiver 212 is closer to the first light transmitter 211 . When the panel assembly 100 is closer to the barrier 70, the second light receiver 213 receives little or no reflected light because it is far away from the first light emitter 211, and the light intensity changes with the The distance changes little. When the panel assembly 100 is far away from the barrier 70, and the light emitted by the first light emitter 211 directly enters the first light receiver 212 by internal reflection, the light intensity value received by the first light receiver 212 is The base value is larger, and the cover plate assembly 23 is farther away from the barrier 70, and the light intensity value of the reflected light is smaller, so the reflected light received by the first light receiver 212 changes with respect to the light intensity value detected by it. At this time, the distance between the second light receiver 113 and the first light emitter 111 is relatively far from the first light receiver 112, so the light emitted by the first light emitter 211 The part that enters the second light receiver 213 through internal reflection is less, and its basic light intensity value is small, while the light intensity of the reflected light after entering the second light receiver 213 has a relatively large change.

During the conversation, the control circuit 23 controls the first light transmitter 211 to emit detection light, and judges that the panel is installed according to the light intensity values of the reflected light received by the first light receiver 212 and the second light receiver 213 Whether the mobile terminal of component 100 is close to or far away from the face, when it is judged to be far away from the face, control the cover assembly 22 to turn on the screen, and when it is judged to be close to the face, control the cover assembly 22 to turn off the screen. Wherein, when the light intensity value received by the first light receiver 213 reaches the first proximity threshold or the light intensity value received by the second light receiver 213 reaches the second proximity threshold, it is determined that the mobile terminal is close to the face. When the light intensity value received by the first light receiver 213 reaches the first distance threshold and the light intensity value received by the second light receiver 213 reaches the second distance threshold, it is determined that the mobile terminal is far away from the face.

In the description of this specification, descriptions referring to the terms "one embodiment", "certain embodiments", "exemplary embodiments", "example", "specific examples", or "some examples" are meant to be combined with Specific features, structures, materials, or characteristics described in the preceding embodiments or examples are 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 described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention, and those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims (9)

1. A sensor module, characterized in that it is applied to a mobile terminal, the mobile terminal includes a cover assembly, the cover assembly includes a light-shielding ink layer and a light-transmitting ink layer covering the light-shielding ink layer, the The light-shielding ink layer includes a first area and a second area, the light transmittance of the first area is greater than the light transmittance of the second area; the sensor module includes two signal transmitters, a first signal receiver, a second signal receiver and two ambient light sensors; A signal transmitter, an ambient brightness sensor and the first signal receiver are packaged to form a first package; The second signal receiver, the other signal transmitter and the other ambient brightness sensor are packaged to form a second package; the first package is spaced apart from the second package, and the first The distance between the package and the second package is between 2 millimeters and 12 millimeters, and the distance is the distance between the geometric center of the first package and the geometric center of the second package; The detection light emitted by one of the signal transmitters is reflected by an obstacle to form a first signal and a second signal, the first signal receiver is used to receive the first signal, and the second signal receiver is used to receive the the second signal; The ambient brightness sensor is used to detect ambient light intensity; Wherein, the first package body and the second package body are opposite to the first area. 2. The sensor module according to claim 1, further comprising a circuit board, the signal transmitter, the first signal receiver, the second signal receiver and the ambient brightness sensor are arranged on the circuit board . 3. A mobile terminal, characterized in that it comprises a cover plate and a sensor module arranged on one side of the cover plate, the cover plate and the sensor module are arranged at intervals, and the sensor module is claimed in claim 1 The sensor module described in any one of to 2. 4. The mobile terminal according to claim 3, further comprising an adhesive layer disposed on the side of the cover plate close to the sensor module, the first signal receiver is used to receive layer, and the second signal receiver is configured to receive the second signal transmitted through the adhesion layer. 5. The mobile terminal according to claim 4, wherein the adhesion layer comprises a first adhesion layer and a second adhesion layer, and the transmittance of the first adhesion layer is greater than the transmittance of the second adhesion layer ; The first adhesion layer is arranged on the side of the cover plate close to the sensor module; The second adhesion layer is disposed on the first adhesion layer; The second adhesion layer includes a first area and a second area, the transmittance of the first area is greater than the transmittance of the second area, and the first area is compatible with the signal transmitter and the first signal receiver And the second signal receiver is relatively arranged, so that the first signal receiver receives the first signal passing through the first area, and the second signal receiver receives the second signal passing through the first area . 6. The mobile terminal according to claim 5, wherein the first attachment layer covers the first area of the second attachment layer. 7. The mobile terminal according to claim 5, wherein the first area is configured as a through hole. 8. The mobile terminal according to any one of claims 5 to 7, wherein the adhesion layer is an ink layer. 9. The mobile terminal according to any one of claims 5 to 7, wherein the first adhesion layer is a white ink layer, and the second adhesion layer is a black ink layer.