CN106055178B - Mobile terminal and proximity sensor - Google Patents

Mobile terminal and proximity sensor Download PDF

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Publication number
CN106055178B
CN106055178B CN201610585173.3A CN201610585173A CN106055178B CN 106055178 B CN106055178 B CN 106055178B CN 201610585173 A CN201610585173 A CN 201610585173A CN 106055178 B CN106055178 B CN 106055178B
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CN
China
Prior art keywords
display screen
infrared
infrared light
inclined surface
mobile terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201610585173.3A
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Chinese (zh)
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CN106055178A (en
Inventor
周意保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN201610585173.3A priority Critical patent/CN106055178B/en
Publication of CN106055178A publication Critical patent/CN106055178A/en
Application granted granted Critical
Publication of CN106055178B publication Critical patent/CN106055178B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Position Input By Displaying (AREA)

Abstract

A kind of mobile terminal, including display screen and the proximity sensor being arranged in below display screen, the proximity sensor includes transmitting terminal and receiving end, the transmitting terminal includes infrared emission component and is arranged in the photocon that infrared emission component goes out on light path, the photocon includes the inclined surface with the binding face being bonded at the top of infrared emission component and with binding face in an angle, after the infrared light that the infrared emission component issues is transmitted to display screen by the inclined surface of the photocon, the region where non-reception end is reflected into via the infrared light that display screen reflects.The present invention also provides a kind of proximity sensors.Mobile terminal and proximity sensor through the invention, erroneous judgement caused by the infrared light reflection to receiving end that can emit transmitting terminal to avoid display screen.

Description

Mobile terminal and proximity sensor
Technical field
The present invention relates to a kind of mobile terminal more particularly to a kind of mobile terminals with proximity sensor.
Background technique
Proximity sensor is widely used to mobile terminal, for example, in the mobile terminal for including touch screen, when mobile whole When bright screen and proximity sensor being held to sense exterior object close to touch screen, then touch screen is closed to prevent the maloperation of touch screen.
As shown in Figure 1, in general, traditional proximity sensor 20 ' includes a transmitting terminal 21 ', transmitting terminal inside setting hair The LED 21b ' of infrared light, a receiving end 22 ' are penetrated, a barricade 23 ', transmitting terminal are set between transmitting terminal 21 ' and receiving end 22 ' The top of the plane fitting transmitting terminal 21 ' of the convex lens 21a ' of 21 ' one semi-cylindricals of top setting, convex lens 21a '.Transmitting terminal The infrared light of 21 ' transmittings is transmitted to touch screen 10 ' outside by the arc surface and touch screen of convex lens 21a ', according to receiving end 22 ' Whether receive infrared light and whether senses exterior object close to touch screen.
But the face due to traditional convex lens 21a ' for infrared light is arc surface, infrared light passes through semicolumn After the refraction of face, it can be reflected into receiving end 22 ' by touch screen 10 ', and cause itself diffraction, so that proximity sensor 20 ' is judged by accident Break as exterior object close to touch screen 10 '.
Currently, generally prevented by partition of the reinforcement between transmitting terminal 21 ' and receiving end 22 ' it is this itself around It penetrates, but reinforces this structural member for separating silica gel sheath outside needing etc realizing, being unfavorable for machine assembly and increasing Cost.
Summary of the invention
In view of this, it is necessary to provide a kind of proximity sensor and mobile terminal, it can be without reinforcing the case where separating Under prevent erroneous judgement caused by itself diffraction.
A kind of mobile terminal is provided, including display screen and the proximity sensor being arranged in below display screen, wherein described Proximity sensor includes transmitting terminal and receiving end, and the transmitting terminal includes infrared emission component and is arranged in infrared emission component Photocon on light path out, the photocon include with the binding face that is bonded at the top of infrared emission component and be bonded Face is in the inclined surface of an angle, and the infrared light that the infrared emission component issues is transmitted to by the inclined surface of the photocon To after display screen, the region where non-reception end is reflected into via the infrared light that display screen reflects.
Wherein, the light-guide device is lens made of transparent glass or transparent plastic.
Wherein, the infrared light that the infrared emission component issues is transmitted to display by the inclined surface of the photocon After screen, the region where non-reception end is reflected into via the infrared light that display screen reflects, comprising:
Wherein, it is emitted to the inner sidewall of proximity sensor, then is reflected into display screen via inner sidewall, is then further passed through As the region where display screen is reflected into non-reception end.
Wherein, inclined surface is value within the scope of 30 degree, 60 degree or 30-60 degree relative to the angle of binding face.
Wherein, the inclined surface is clinoplain.
Wherein, the length of inclined surface and the angle are in inverse ratio, the length of the inclined surface be since with binding face with The length that the angle extends towards receiving end.
Wherein, the receiving end includes infrared remote receiver and conversion circuit, and the infrared remote receiver is used to receive infrared light, The conversion circuit is used to be converted to the infrared light of the received analog form of infrared remote receiver the infrared luminous intensity of digital form Value.
Wherein, the mobile terminal further includes processor, and the processor is connect with the conversion circuit, is turned for receiving The infrared light intensity value of circuit output is changed, the processor is used for the infrared light intensity for being in bright screen state in display screen and receiving When angle value is greater than first predetermined value, display screen is closed in control.
Wherein, the light-guide device further includes the joint surface of the connection binding face and inclined surface, and the joint surface is Arcwall face or plane.
Also provide a kind of proximity sensor, wherein the proximity sensor includes transmitting terminal and receiving end, the transmitting terminal Including infrared emission component and the photocon that infrared emission component goes out on light path is set, the photocon include with The binding face being bonded at the top of infrared emission component and the inclined surface with binding face in an angle.
Wherein, the light-guide device is lens made of transparent glass or transparent plastic.
Wherein, the inclined surface is within the scope of 30 degree, 60 degree or 30-60 degree relative to the angle of the binding face Value.
Wherein, the inclined surface is clinoplain.
Wherein, the length of the inclined surface and the angle are in inverse ratio, and the length of the inclined surface is to open from binding face Begin the length extended with the angle towards receiving end.
Wherein, the receiving end includes infrared remote receiver and conversion circuit, and the infrared remote receiver is used to receive infrared light, The conversion circuit is used to be converted to the infrared light of the received analog form of infrared remote receiver the infrared luminous intensity of digital form Value, the infrared light intensity value is to have reflected whether proximity sensor described in object proximity.
Wherein, the light-guide device further includes the joint surface of the connection binding face and inclined surface, and the joint surface is Arcwall face or plane.
Wherein, the proximity sensor further includes the baffle being set between transmitting terminal and receiving end.
Compared to the prior art, the invention has the following advantages:
Light-guide device is set on the transmitting terminal of proximity sensor of the invention, and the one end of light-guide device far from transmitting terminal is to incline Inclined-plane, infrared light are reflected into display screen by the side wall that the inclined surface of photocon is transmitted to proximity sensor, pass through display screen The angle of reflection of the infrared light of reflection can be smaller, without reflecting less than receiving end, avoids display screen reflection to proximity sensor Interference, and then proximity sensor only senses exterior object close to display screen, avoids the close erroneous judgement of sensing exterior object.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional mobile terminal proximity sensor.
Fig. 2 is the structural schematic diagram of the proximity sensor of the mobile terminal in one embodiment of the invention.
Fig. 3 is the receiving end of proximity sensor of the invention and the structural block diagram of mobile terminal part-structure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 2, the mobile terminal 1 in one embodiment of the invention including a display screen 10 and is set to display screen 10 The proximity sensor 20 of lower section.
Proximity sensor 20 includes transmitting terminal 21 and receiving end 22.
Transmitting terminal 21 includes photocon 21a and infrared emission component 21b.Wherein, photocon 21a is arranged in infrared hair Penetrate the going out on light path of element 21b, photocon 21a include the binding face S1 that is bonded with the top of infrared emission component 21b with And far from infrared emission component 21b relative to the inclined inclined surface S2 of binding face S1, inclined surface S2 is relative to infrared emission The top planes and binding face S1 of element 21b are formed slopely an angle theta.The infrared light that the infrared emission component 21b is issued is logical It crosses after the inclined surface S2 is transmitted to display screen 10, is reflected into non-reception 22 institute of end via the infrared light that display screen 10 reflects Region.Obviously, most of infrared light will emit via display screen 10 to except display screen 10, when there is exterior object, such as When face, manpower etc. stop, it is transmitted to receiving end 22 by display screen 10 after being reflected by exterior object, when receiving end 22 receives After infrared light, judgement has exterior object close to display screen, and then correspondingly control display screen 10 opens or closes mobile terminal 1, that is, Bright screen puts out screen.
As shown in Fig. 2, in the present embodiment, the inclined surface S2 is smooth plane.In other embodiments, described Inclined surface S2 or face for vertical riser type, the highly significant of ladder are less than the length of inclined surface S2.
Wherein, the light-guide device 21a is lens made of transparent glass or transparent plastic.
Wherein, after the inclined surface S2 that the infrared light that infrared emission component 21b is issued passes through the photocon 21a, transmitting It is reflected into display screen 10 to the inner sidewall C1 of proximity sensor 20, then via inner sidewall C1, then further via display screen 10 are reflected into the region where non-reception end.
As shown in Fig. 2, the design of the arc surface in compared with the existing technology, in the present invention, infrared light is by for plane After the S2 of inclined surface, when being emitted to the inner sidewall C1 of proximity sensor 20, the incidence angle θ 1 relative to inner sidewall C1 is larger, thus, The angle of reflection θ 2 of the inner sidewall C1 of proximity sensor 20 is also larger.Further, when infrared light is reflected into display from inner sidewall C1 When shielding 10, the incidence angle θ 3 relative to display screen 10 is smaller, so that the angle of reflection θ 4 for the infrared light that display screen 10 reflects is also smaller. Therefore, after shown 10 reflection of screen of infrared light, will emit near the transmitting terminal 21 of proximity sensor 20, without emitting extremely Receiving end 22.Thus the problem of avoiding itself diffraction caused by proximity sensor 20 and display screen 10 in the prior art.Its In, the part that the top half frame of receiving end 22 shown in Fig. 2 is located at for the infrared remote receiver etc. for receiving infrared-ray, Lower half portion frame is the part where other circuits, thus when the angle of reflection θ 4 for the infrared light that display screen 10 reflects is smaller, it is red Outer light will not reflex to the top half where infrared remote receiver.
Wherein, the inner sidewall C1 of the proximity sensor 20 is coated with infrared reflective material.
As shown in Fig. 2, the proximity sensor 20 further includes the baffle 23 being set between transmitting terminal 21 and receiving end 22, The baffle 23 is arranged perpendicular to the plane of display screen 10, the infrared light emission for further stopping display screen 10 to reflect to reception End 22.
Wherein, the angle theta of top planes of the inclined surface S2 relative to transmitting terminal 21 can be 30 degree, 60 degree or 30-60 Value within degree.Wherein, the angle theta is according to infrared light wavelength, the refractive index of light-guide device 21a, display screen 10 and to approach The distance of the vertical range of sensor 20,21 receiving end 22 of transmitting terminal is determined.
The direction for the infrared light that the transmitting terminal 21 emits is towards the inclined surface S2, to make the transmitting terminal 21 The infrared light of transmitting largely pass through inclined surface S2 launch to avoid display screen 10 reflect light be reflected into receiving end 22, The angle theta and the length of inclined surface S2 can be in inverse ratio.That is, the length of inclined surface S1 is longer, such as greatly when angle theta is smaller Cause the length for being equal to the binding face S1.
Preferably, projected length of the inclined surface S2 on binding face S1 is greater than the 1/2 of binding face S1 length.Wherein, The length of inclined surface S2 and binding face S1 described herein are prolonged for the orientation approximately along transmitting terminal 21 and receiving end 22 The length stretched.The length of the inclined surface S2 is the length extended with the angle theta towards receiving end 22 since with binding face S1 Degree.The length of the binding face S1 is the length on the side extended along the orientation for being parallel to transmitting terminal 21 and receiving end 22
Wherein, the light-guide device 21a further includes the joint surface S3 of the connection binding face S1 and inclined surface S2, described Joint surface S3 can be the shapes such as arcwall face, plane.
It is the internal structure block diagram of the receiving end 22 of proximity sensor 20 also referring to Fig. 3.The receiving end 22 includes Infrared remote receiver 221 and conversion circuit 222.The infrared remote receiver 221 is for receiving infrared light.
The conversion circuit 222 is used to the infrared light of the received analog form of infrared remote receiver 221 being converted to digital shape The infrared light intensity value of formula.When there is no any object to block before display screen 10, at this time almost without infrared reflection To the infrared remote receiver 221 of receiving end 22, the infrared light intensity value that conversion circuit 222 obtains at this time is the smallest.Object not When disconnected close, the intensity of the infrared ray for the infrared remote receiver 221 for reflexing to receiving end 22 constantly becomes larger, thus conversion circuit The infrared light intensity value of 222 conversions constantly becomes larger, until full scale.To which the infrared light intensity value can reflect whether There are proximity sensor 20 described in object proximity.
Wherein, conversion circuit 222 includes analog-digital converter, and the precision of analog-digital converter can be 8,10,12 etc., is turned The corresponding difference of range for changing the light intensity value that circuit 222 is converted can be 256 (candelas), 1024,4096 etc..
Such as when analog-digital converter is 10 when normally being blocked when 10 front of display screen without object, proximity values It is 50, when the objects such as face all paste on the display screen 10 close proximity to the position of sensor 20, infrared ray is all reflected into Receiving end 22, the infrared light intensity value that conversion circuit 222 is converted will be full scale 1024.
In one embodiment, the conversion circuit 222 is a processing chip, and the analog-digital converter is to be packaged in the place Manage the structure in chip.
As shown in figure 3, the mobile terminal 1 further includes processor 30, the processor 30 connects with the conversion circuit 222 It connects, for receiving the infrared light intensity value of the output of conversion circuit 222.
The processor 30 is used to be greater than first in the infrared light intensity value that display screen 10 is in bright screen state and receives When predetermined value, display screen 10 is closed in control.Wherein, the first predetermined value can be 400.Wherein, when the infrared light intensity received Angle value is greater than first predetermined value, shows that the received infrared ray in receiving end 22 reaches some strength, illustrates have object close to display screen 10, at this time in order to avoid maloperation, close display screen 10.The scene of application can be that user is in the feelings for being not turned off display screen 10 It receives calls under condition, to be placed on pocket medium.Wherein, the corresponding object of first predetermined value 400 is 3-5 lis at a distance from display screen 10 Rice.
The processor 30, which is also used to be in display screen 10, puts out screen state and the infrared light intensity value that receives is greater than the When two predetermined values, display screen 10 is opened in control.Wherein, the second predetermined value can be 300.Likewise, infrared when receiving Light intensity value is greater than second predetermined value, shows that the received infrared ray in receiving end 22 reaches some strength, illustrates have object close to aobvious Display screen 10 shows that user starts mobile device 100 to be operated, at this time opens the display screen 10 being in close state, for User quickly uses.
Wherein, the display screen 10 is touch display screen.
Mobile terminal 1 and proximity sensor 20 of the invention, by changing in the proximity sensor 20 in transmitting terminal 22 Photocon 21a shape and change the reflection angle reflected through display screen 10 of infrared light, and then avoid because close to passing The infrared light that 20 transmitting terminal 21 of sensor issues is reflected into the erroneous judgement of proximity sensor caused by receiving end 21 through display screen 10 The problem of.

Claims (7)

1. a kind of mobile terminal, including display screen and the proximity sensor being arranged in below display screen, which is characterized in that described Proximity sensor includes transmitting terminal and receiving end, and the transmitting terminal includes infrared emission component and is arranged in infrared emission component Photocon on light path out, the photocon include with the binding face that is bonded at the top of infrared emission component and be bonded Face is in the inclined surface of an angle, and the photocon is lens made of transparent glass or transparent plastic;The infrared emission member Behind the inclined surface that the infrared light that part issues passes through the photocon, it is emitted to the inner sidewall of proximity sensor, then via inside Wall is reflected into display screen, the region where non-reception end is then further reflected into via display screen, wherein the inclined surface For the face of vertical riser type.
2. mobile terminal according to claim 1, which is characterized in that inclined surface relative to the angle of binding face is 30 degree, Value within the scope of 60 degree or 30-60 degree.
3. mobile terminal according to claim 1, which is characterized in that the length of inclined surface and the angle are in inverse ratio, institute The length for stating inclined surface is the length extended with the angle towards receiving end since with binding face.
4. mobile terminal according to claim 1-3, which is characterized in that the receiving end includes infrared remote receiver And conversion circuit, the infrared remote receiver are used for for receiving infrared light, the conversion circuit by the received mould of infrared remote receiver The infrared light of quasi- form is converted to the infrared light intensity value of digital form.
5. mobile terminal according to claim 4, which is characterized in that the mobile terminal further includes processor, the place Reason device is connect with the conversion circuit, and for receiving the infrared light intensity value of conversion circuit output, the processor is used for aobvious Display screen is in bright screen state and when the infrared light intensity value that receives is greater than first predetermined value, and display screen is closed in control.
6. mobile terminal according to claim 1-3, which is characterized in that the photocon further includes a connection The joint surface of the binding face and inclined surface, the joint surface are arcwall face or plane.
7. mobile terminal according to claim 1-3, which is characterized in that the proximity sensor further includes setting Baffle between transmitting terminal and receiving end, the baffle are arranged perpendicular to the plane of the display screen, for further stopping The infrared light emission of display screen reflection is to receiving end.
CN201610585173.3A 2016-07-22 2016-07-22 Mobile terminal and proximity sensor Expired - Fee Related CN106055178B (en)

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CN106055178B true CN106055178B (en) 2019-06-07

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CN106775137B (en) * 2016-12-06 2019-10-25 Oppo广东移动通信有限公司 Proximity test method, device and mobile terminal
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