CN207150648U - Light sensitive device and mobile terminal - Google Patents

Abstract

The utility model discloses light sensitive device and mobile terminal, including liquid crystal display LCD backlight component, display screen, infrared transmission module and camera；LCD backlight component and the display screen superposition is set, and the infrared transmission module launches infrared light outwards to export infrared light to LCD backlight component or display screen, and the camera is used to receive reflects the infrared light returned through foreign object.The utility model launches infrared light by setting up infrared transmission module, receives infrared light using camera to realize the function of light sensation, reduce the use of range sensor, reduce the stacking space of mobile terminal internal components, so as to reduce the volume of mobile terminal, the production cost of mobile terminal is reduced.

Description

Light sensitive device and mobile terminal

Technical field

The utility model relates generally to technical field of mobile terminals, specifically, is related to a kind of light sensitive device and movement eventually End.

Background technology

In existing mobile terminal, there is infrared ray/ambient light/apart from three-in-one sensor, pass through its own transmission Infrared ray, then itself receive infrared ray, reach when answering the call, sense the distance of face and screen, play and put out screen bright screen work( Can, prevent maloperation.It can also receive external environmental light to adjust the brightness of screen, automatically adjust screen luminance of mobile phone, to give people The function of the best visual effect.Such as in dark conditions, mobile phone screen backlight will be automatically dimmed, otherwise very dazzling. Its function is for sensing light intensity, then feeding back to mobile phone, adjust screen intensity automatically for you, to power saving, is protected Protect eyesight.The defects of prior art is：Infrared ray/ambient light/apart from three-in-one sensor is set in the terminal, increased Add device stack space, added the volume of mobile terminal, and add production cost.

Utility model content

Main purpose of the present utility model is to provide a kind of light sensitive device and mobile terminal, it is intended to which solution moves in the prior art Dynamic terminal production cost is high, bulky problem.

To achieve the above object, the utility model proposes a kind of light sensitive device, including liquid crystal display LCD backlight component, Display screen, infrared transmission module and camera；LCD backlight component and the display screen superposition is set, the infrared emission mould Block launches infrared light outwards to export infrared light to LCD backlight component or display screen, and it is anti-through foreign object that the camera is used for reception Penetrate the infrared light of return.

Optionally, the backlight of the infrared transmission module and the LCD backlight component is located at same installation position, described red Outer transmitter module electrically connects with the LCD backlight flexible PCB of the LCD backlight component.

Optionally, the LCD backlight component includes light guide plate, and the light-emitting area of the infrared transmission module is towards the leaded light The incidence surface of plate.

Optionally, the camera includes infrared photosensitive unit, the process foreign object sent for receiving infrared transmission module The infrared light of reflection.

Optionally, the camera also includes processing unit and control unit, the infrared photosensitive unit, processing unit, Control unit and LCD backlight component are sequentially connected.

Optionally, the camera also includes the light sensor electrically connected with processing module, and the light sensor is used In the brightness of detection ambient light.

Optionally, the light sensor is cmos sensor.

Optionally, the infrared transmission module is infrared LED lamp.

The utility model also proposes a kind of mobile terminal, and the mobile terminal includes housing and above-mentioned light sensitive device, The light sensitive device is in the housing, and the housing front is provided with cover plate, and the cover plate is provided with perforate, the camera It is corresponding with the position of opening.

Optionally, the mobile terminal also includes receiver, and the receiver and camera are respectively positioned in the perforate.

In technical solutions of the utility model, the light sensitive device includes LCD backlight component, display screen, infrared transmission module And camera, infrared transmission module transmitting infrared light, infrared light is launched by display screen encounters foreign object back reflection, described to take the photograph As head receives the infrared light of reflection.The utility model is launched infrared light by setting up infrared transmission module, received using camera Infrared light realizes the function of light sensation, reduces the use of range sensor, and the stacking for reducing mobile terminal internal components is empty Between, so as to reduce the volume of mobile terminal, reduce the production cost of mobile terminal.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the hardware architecture diagram for realizing each one optional mobile terminal of embodiment of the utility model；

Fig. 2 is the radio communication device schematic diagram of mobile terminal in Fig. 1；

Fig. 3 is the structural representation of light sensitive device of the present utility model；

Fig. 4 is the circuit function block diagram of the utility model light sensitive device camera.

Figure grade explanation：

Label	Title	Label	Title
				1	LCD backlight component	10	Foreign object
2	Display screen	3	Infrared transmission module
				4	Camera	41	Infrared induction unit
42	Processing unit	43	Control unit
				44	Light sensor	5	Cover plate

Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belong to the scope of the utility model protection.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as When the fruit particular pose changes, then directionality instruction also correspondingly changes therewith.

In addition, and it can not be managed in the utility model such as relating to the description of " first ", " second " etc. is only used for describing purpose Solve to indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".It is " more in description of the present utility model It is individual " it is meant that at least two, such as two, three etc., unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can mechanically connect, also may be used Be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the company inside two components Logical or two components interaction relationship, limited unless otherwise clear and definite.For the ordinary skill in the art, Concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In addition, the technical scheme between each embodiment of the utility model can be combined with each other, but must be with ability Domain those of ordinary skill can be implemented as basis, will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of this technical scheme is not present, also not within the protection domain of the requires of the utility model.

It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model Utility model.

In follow-up description, the suffix using such as " module ", " part " or " unit " for representing element is only Be advantageous to explanation of the present utility model, itself there is no a specific meaning.Therefore, " module ", " part " or " unit " can be with Mixedly use.

Terminal can be implemented in a variety of manners.For example, terminal described in the utility model can include such as mobile phone, Tablet personal computer, notebook computer, palm PC, personal digital assistant (Personal Digital Assistant, PDA), just Prompt formula media player (Portable Media Player, PMP), guider, wearable device, Intelligent bracelet, pedometer Deng mobile terminal, and the fixed terminal such as digital TV, desktop computer.

It will be illustrated in subsequent descriptions by taking mobile terminal as an example, it will be appreciated by those skilled in the art that except special Outside element for moving purpose, the end of fixed type can also apply to according to the construction of embodiment of the present utility model End.

Referring to Fig. 1, it is a kind of hardware architecture diagram for the mobile terminal for realizing each embodiment of the utility model, The mobile terminal 100 can include：RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output list Member 103, A/V (audio/video) input block 104, sensor 105, display unit 106, user input unit 107, interface list The parts such as member 108, memory 109, processor 110 and power supply 111.It will be understood by those skilled in the art that shown in Fig. 1 Mobile terminal structure do not form restriction to mobile terminal, mobile terminal can be included than illustrating more or less portions Part, either combine some parts or different parts arrangement.

The all parts of mobile terminal are specifically introduced with reference to Fig. 1：

Radio frequency unit 101 can be used for receiving and sending messages or communication process in, the reception and transmission of signal, specifically, by base station Downlink information receive after, handled to processor 110；In addition, up data are sent to base station.Generally, radio frequency unit 101 Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrate Frequency unit 101 can also be communicated by radio communication with network and other equipment.Above-mentioned radio communication can use any communication Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division Multiple Access, WCDMA), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, FDD Long Term Evolution) and TDD-LTE (Time Division Duplexing-Long Term Evolution, time division duplex Long Term Evolution) etc..

WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102 Sub- mail, browse webpage and access streaming video etc., it has provided the user wireless broadband internet and accessed.Although Fig. 1 shows Go out WiFi module 102, but it is understood that, it is simultaneously not belonging to must be configured into for mobile terminal, completely can be according to need To be omitted in the essential scope for do not change utility model.

Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100 When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or WiFi module 102 it is receiving or It is sound that the voice data stored in memory 109, which is converted into audio signal and exported,.Moreover, audio output unit 103 The audio output related to the specific function that mobile terminal 100 performs can also be provided (for example, call signal receives sound, disappeared Breath receives sound etc.).Audio output unit 103 can include loudspeaker, buzzer etc..

A/V input blocks 104 are used to receive audio or video signal.A/V input blocks 104 can include graphics processor (Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode Or the static images or the view data of video obtained in image capture mode by image capture apparatus (such as camera) are carried out Reason.Picture frame after processing may be displayed on display unit 106.Picture frame after the processing of graphics processor 1041 can be deposited Storage is transmitted in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042 Quiet down sound (voice data), and can be voice data by such acoustic processing.Audio (voice) data after processing can To be converted to the form output that mobile communication base station can be sent to via radio frequency unit 101 in the case of telephone calling model. Microphone 1042 can implement various types of noises and eliminate (or suppression) algorithm to eliminate (or suppression) in reception and send sound Caused noise or interference during frequency signal.

Mobile terminal 100 also includes at least one sensor 105, such as optical sensor, motion sensor and other biographies Sensor.Specifically, optical sensor includes ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to environment The light and shade of light adjusts the brightness of display panel 1061, and proximity transducer can close when mobile terminal 100 is moved in one's ear Display panel 1061 and/or backlight.As one kind of motion sensor, accelerometer sensor can detect in all directions (general For three axles) size of acceleration, size and the direction of gravity are can detect that when static, the application available for identification mobile phone posture (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.； The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, The other sensors such as hygrometer, thermometer, infrared ray sensor, will not be repeated here.

Display unit 106 is used for the information for showing the information inputted by user or being supplied to user.Display unit 106 can wrap Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used Forms such as (Organic Light-Emitting Diode, OLED) configures display panel 1061.

User input unit 107 can be used for the numeral or character information for receiving input, and produce the use with mobile terminal The key signals input that family is set and function control is relevant.Specifically, user input unit 107 may include contact panel 1071 with And other input equipments 1072.Contact panel 1071, also referred to as touch-screen, collect touch operation of the user on or near it (for example user uses any suitable objects or annex such as finger, stylus on contact panel 1071 or in contact panel 1071 Neighbouring operation), and corresponding attachment means are driven according to formula set in advance.Contact panel 1071 may include touch detection Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it Contact coordinate is converted into, then gives processor 110, and the order sent of reception processing device 110 and can be performed.In addition, can To realize contact panel 1071 using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel 1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap Include but be not limited to physical keyboard, in function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc. One or more, do not limit herein specifically.

Further, contact panel 1071 can cover display panel 1061, detect thereon when contact panel 1071 or After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, contact panel 1071 and display panel 1061 be the part independent as two to realize the input of mobile terminal and output function, but in certain embodiments, can Input and the output function of mobile terminal are realized so that contact panel 1071 and display panel 1061 is integrated, is not done herein specifically Limit.

Interface unit 108 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 100.For example, External device (ED) can include wired or wireless head-band earphone port, external power source (or battery charger) port, wired or nothing Line FPDP, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with For transmitting data between mobile terminal 100 and external device (ED).

Memory 109 can be used for storage software program and various data.Memory 109 can mainly include storing program area And storage data field, wherein, storing program area can storage program area, application program (such as the sound needed at least one function Sound playing function, image player function etc.) etc.；Storage data field can store according to mobile phone use created data (such as Voice data, phone directory etc.) etc..In addition, memory 109 can include high-speed random access memory, can also include non-easy The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.

Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the whole mobile terminal of connection Individual part, by running or performing the software program and/or module that are stored in memory 109, and call and be stored in storage Data in device 109, the various functions and processing data of mobile terminal are performed, so as to carry out integral monitoring to mobile terminal.Place Reason device 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and modulatedemodulate is mediated Device is managed, wherein, application processor mainly handles operating system, user interface and application program etc., and modem processor is main Handle radio communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.

Mobile terminal 100 can also include the power supply 111 (such as battery) to all parts power supply, it is preferred that power supply 111 Can be logically contiguous by power-supply management system and processor 110, so as to realize management charging by power-supply management system, put The function such as electricity and power managed.

Although Fig. 1 is not shown, mobile terminal 100 can also will not be repeated here including bluetooth module etc..

For the ease of understanding the utility model embodiment, the communication network that is based on below to mobile terminal of the present utility model Network system is described.

Referring to Fig. 2, Fig. 2 is a kind of communications network system Organization Chart that the utility model embodiment provides, the communication network Network system is the LTE system of universal mobile communications technology, and the LTE system includes communicating the UE (User of connection successively Equipment, user equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, Evolved UMTS Terrestrial radio access network) 202, EPC (Evolved Packet Core, evolved packet-based core networks) 203 and fortune Seek the IP operation 204 of business.

Specifically, UE201 can be above-mentioned terminal 100, and here is omitted.

E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning Journey (backhaul) (such as X2 interface) is connected with other eNodeB2022, and eNodeB2021 is connected to EPC203, ENodeB2021 can provide UE201 to EPC203 access.

EPC203 can include MME (Mobility Management Entity, mobility management entity) 2031, HSS (Home Subscriber Server, home subscriber server) 2032, other MME2033, SGW (Serving Gate Way, Gateway) 2034, PGW (PDN Gate Way, grouped data network gateway) 2035 and PCRF (Policy and Charging Rules Function, policy and rate functional entity) 2036 etc..Wherein, MME2031 be processing UE201 and The control node of signaling between EPC203, there is provided carrying and connection management.HSS2032 is all to manage for providing some registers Such as the function of attaching position register (not shown) etc, and preserve some and used about service features, data rate etc. The special information in family.All customer data can be transmitted by SGW2034, and PGW2035 can provide UE 201 IP Address is distributed and other functions, and PCRF2036 is strategy and the charging control strategic decision-making of business data flow and IP bearing resources Point, it selects and provided available strategy and charging control decision-making with charge execution function unit (not shown) for strategy.

IP operation 204 can include internet, Intranet, IMS (IP Multimedia Subsystem, IP multimedia System) or other IP operations etc..

Although above-mentioned be described by taking LTE system as an example, those skilled in the art it is to be understood that the utility model not LTE system is suitable only for, is readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD- SCDMA and following new network system etc., are not limited herein.

Based on above-mentioned mobile terminal hardware configuration and communications network system, propose light sensitive device of the present utility model and Each embodiment of mobile terminal with the light sensitive device.

The utility model proposes a kind of light sensitive device, reference picture 3, the light sensitive device includes LCD backlight component 1, display Screen 2, infrared transmission module 3 and camera 4；LCD backlight component 1 and display screen 2 superposition is set, the infrared emission mould Block launches infrared light outwards to export infrared light to LCD backlight component or display screen, and it is anti-through foreign object that the camera is used for reception Penetrate the infrared light of return.

In the utility model embodiment, the light sensitive device includes LCD backlight component 1, display screen 2, infrared emission mould Block 3 and camera 4, infrared transmission module 3 launch infrared light, infrared light launched by display screen 2 encounter it is anti-after foreign object 10 Penetrate, the camera 4 receives the infrared light of reflection.The utility model is launched infrared light by setting up infrared transmission module 3, utilized Camera 4 receives infrared light to realize the function of light sensation, reduces the use of range sensor, reduces device inside mobile terminal The stacking space of part, so as to reduce the volume of mobile terminal, reduce the production cost of mobile terminal.

Further, the backlight of the infrared transmission module 3 and the LCD backlight component 1 is located at same installation position, institute The LCD backlight flexible PCB that infrared transmission module 3 is stated with the LCD backlight component 1 electrically connects.The peace of infrared transmission module 3 The backlight of holding position and the LCD backlight component 1, which is located at same installation position, can utilize the original backlight of backlight assembly Installation position, it is not necessary to installation position is still further set, reduces processing cost, while also avoids wasting installation limited inside mobile terminal Space.

Further, the LCD backlight component 1 includes light guide plate, and the light-emitting area of the infrared transmission module 3 is described in The incidence surface of light guide plate.

In the present embodiment, the backlight assembly includes LCD backlight flexible PCB and located at LCD backlight flexible PCB On optical module, the optical module includes backlight, light guide plate and reflecting plate, and backlight enters located at the light guide plate The side of smooth surface, backlight are provided with reflecting plate away from the side of the incidence surface of light guide plate.The infrared transmission module 3 and LCD is carried on the back The backlight of optical assembly 1 is located at same installation position, and the infrared transmission module 3 and backlight are and the LCD backlight flexible electrical Road plate electrical connection, when LCD backlight component 1 is lighted, infrared transmission module 3 is synchronously lighted, and launches infrared light.Infrared transmission module 3 installation site is unlimited, as long as it can realize that the infrared light-transmissive display screen 2 sent projects.In the present embodiment, infrared emission The installation site of module 3 is preferably located at same installation position, i.e. infrared transmission module 3 with the backlight of the LCD backlight component 1 In the side of the light guide plate incidence surface, light that infrared transmission module 3 is sent injects the incidence surface of the light guide plate, and from leaded light The exiting surface of plate appears, and is then projected by display screen 2.The installation site of infrared transmission module 3 and the LCD backlight component 1 Backlight be located at same installation position can utilize the original backlight of backlight assembly installation position, it is not necessary to still further set installation Position, procedure is reduced, while also avoid wasting installing space limited inside mobile terminal.Furthermore backlight is away from leaded light The side of the incidence surface of plate is provided with reflecting plate, and reflecting plate can be reflected the infrared light that infrared transmission module 3 is sent, so as to More infrared lights can be made to inject the incidence surface of light guide plate, light leak of the infrared light in the incidence surface of light guide plate is reduced, reduce infrared Light loss, improve light extraction efficiency of the infrared light in the exiting surface of light guide plate.

The shape of light guide plate can be clapboard or parallel flat board.In addition, light guide plate can include polymethylacrylic acid Methyl esters (PMMA), polymethyl methacrylate have good transmissivity, can improve the light emission rate of infrared light, and with high-strength Degree, effectively can prevent from deforming or damage.Light guide plate could be arranged to separate default distance or setting with infrared transmission module 3 To be adjacent with infrared transmission module 3.Backlight can be CCFL (cathode fluorescent tube), LED (light emitting diode), HCFL (thermal cathode fluorescent tube) etc..

In the present embodiment, the light-emitting area of infrared transmission module 3 towards the light guide plate incidence surface, it is in other words, infrared The incidence surface of light guide plate described in the light-emitting area face of transmitter module 3, so that more infrared light injects the incidence surface of light guide plate, protect Demonstrate,prove the utilization rate of infrared light.

Further, reference picture 4, the camera 4 includes infrared photosensitive unit 41, for receiving infrared transmission module 3 The infrared light reflected by foreign object 10 sent.

In the present embodiment, when the LCD backlight flexible PCB of LCD backlight component 1 is powered, infrared transmission module 3 is lighted, The light that infrared transmission module 3 is sent injects the incidence surface of the light guide plate, and is appeared from the exiting surface of light guide plate, then by aobvious Display screen 2 projects.The infrared light sent by display screen 2 encounters the back reflection of foreign object 10, and infrared photosensitive unit 41 receives the red of reflection Outer light.Current mobile terminal device is nearly all provided with camera 4, by camera 4 integrate infrared photosensitive unit 41 come Infrared light is received, it is simple and compact for structure, it is rationally distributed, it is easy to accomplish, avoid setting up a range sensor in addition, reduce production Cost.

Further, reference picture 4, the camera 4 also includes processing unit 42 and control unit 43, described infrared photosensitive Unit 41, processing unit 42, control unit 43 and LCD backlight component 1 are sequentially connected.

The processing unit 42 is used for according to the infrared optical oomputing foreign object 10 that infrared photosensitive unit 41 receives to display screen 2 Distance, in the present embodiment, foreign object 10 refer mainly to face 10, and described control unit 43 controls LCD backlight according to result of calculation The backlight of component 1 bright is gone out.Wherein, the output end of infrared photosensitive unit 41 and the first input end of processing unit 42 connect Connect, the output end of processing unit 42 is connected with the input of control unit 43.Infrared transmission module 3 sends infrared light, infrared sense Light unit 41 receives infrared light, and the infrared optical information of reception is sent to processing unit 42, and processing unit 42 is according to reception Infrared optical information calculates the distance that face 10 arrives display screen 2, and the distance results of calculating are sent to control unit 43, control Unit 43 controls the bright of the backlight of LCD backlight component 1 or gone out according to the distance results of calculating, when the distance of calculating is less than in advance If during distance threshold, control unit 43 controls backlight to extinguish.

Light sensitive device of the present utility model is mainly used in the mobile terminal with call function and display screen 2, specific bag Include the mobile terminals such as mobile phone, the tablet personal computer that can be conversed.It should be noted that when the backlight of backlight of mobile terminal component extinguishes Afterwards, display screen 2 will enter lock-out state.In the present embodiment, when mobile terminal is in talking state, infrared transmission module 3 Infrared light is sent, the infrared light that infrared transmission module 3 is sent injects the incidence surface of light guide plate, and saturating from the exiting surface of light guide plate Go out, then projected by display screen 2.The infrared light sent by display screen 2 encounters the back reflection of face 10, infrared photosensitive unit 41 The infrared light of reflection is received, and the infrared optical information of reception is sent to processing unit 42, processing unit 42 is according to the red of reception Outer optical information calculates the distance that face 10 arrives display screen 2, and the distance results of calculating are sent to control unit 43, control list Member 43 the distance results of the calculating received is compared with pre-determined distance threshold value, if the distance results calculated be less than preset away from During from threshold value, control unit 43 controls backlight to extinguish and cause the display screen 2 of mobile terminal to enter lock-out state, so as to effectively The energy consumption of mobile terminal is reduced, avoids mobile terminal display screen 2 from causing dropped calls because of false touch.The utility model passes through shooting The infrared photosensitive unit 41 integrated in first 4 receives infrared light, and processing unit 42 calculates the distance that face 10 arrives display screen 2, control Unit 43 processed controls the bright of backlight or gone out, and reaches the effect that distance perspective is answered, reduces the use of range sensor, so as to reduce The stacking spaces of mobile terminal internal components, reduces the volume of mobile terminal, reduces production cost.

Further, reference picture 4, the camera 4 also includes the light sensor 44 electrically connected with processing module, described Light sensor 44 is used for the brightness for detecting ambient light.The output end of light sensor 44 and the second input of processing unit 42 Connection.For processing unit 42 by the environmental light brightness that light sensor 44 detects compared with default environment bright angle value, control is single Member 43 adjusts the brightness value of LCD backlight component 1 according to comparative result.When the environmental light brightness of detection is less than default ambient light Brightness value, control unit 43 accordingly turn down the brightness value of LCD backlight component 1, when the environmental light brightness of detection is more than default ring Border brightness values, control unit 43 accordingly heighten the brightness value of LCD backlight component 1, can be according to the environment of surrounding so as to realize The backlight illumination of the automatic brightness adjustment display screen 2 of light, the eyes of user are effectively protected, alleviate the visual fatigue of user, improved The experience of user, save the energy.The utility model detects the bright of ambient light by the light sensor 44 integrated in camera 4 Degree, reach the effect of environment induction, without configuring special ambient light sensor, reduce the use of ambient light sensor, from And reduce the stacking space of mobile terminal internal components, the volume of mobile terminal is reduced, reduces production cost.

Further, the light sensor 44 is cmos sensor.When the core imaging photosensitive element of preceding camera 4 has Two kinds：One kind is CCD (Charge Coupled Device, charge coupling device) element；Another kind is CMOS (Complementary Metal-Oxide-Semiconductor, complementary metal oxide semiconductor) element.Light sensor 44 can be that cmos sensor can also be ccd sensor, and in the present embodiment, light sensor 44 is cmos sensor, The power consumption of cmos sensor is relatively low, and the conformability of cmos sensor and peripheral circuit is high, is easily integrated with other circuits Together, so that the volume of camera 4 significantly reduces.

Further, the infrared transmission module 3 is infrared LED lamp.It is infrared when mobile terminal is in talking state LED sends infrared light, and the infrared light that infrared LED lamp is sent injects the incidence surface of light guide plate, and saturating from the exiting surface of light guide plate Go out, then projected by display screen 2.The infrared light sent by display screen 2 encounters the back reflection of face 10, infrared photosensitive unit 41 The infrared light of reflection is received, and the infrared optical information of reception is sent to processing unit 42, processing unit 42 is according to the red of reception Outer optical information calculates the distance that face 10 arrives display screen 2, and the distance results of calculating are sent to control unit 43, control list Member 43 controls the bright of the backlight of LCD backlight component 1 or gone out according to the distance results of calculating, is preset when the distance of calculating is less than During distance threshold, control unit 43 controls backlight to extinguish.Infrared LED light fixture has that power consumption is small, stability is high, heating is few excellent Point, and it is cheap, service life is long, small volume so that production cost is low, be easily integrated installation.

The utility model also proposes a kind of mobile terminal, reference picture 3, and the mobile terminal includes housing and above-mentioned light Induction device, the light sensitive device is in the housing, and the housing front is provided with cover plate 5, and the cover plate 5 is provided with perforate, The camera 4 is corresponding with the position of opening.The mobile terminal of the present embodiment, it is infrared photosensitive by what is integrated in camera 4 Unit 41 receives infrared light, and processing unit 42 calculates the distance that face 10 arrives display screen 2, control unit 43 controls backlight It is bright or go out, reach the effect that distance perspective is answered, reduce the use of range sensor.Pass through the light level integrated in camera 4 Device 44 detects the brightness of ambient light, environmental light brightness that processing unit 42 detects light sensor 44 and default ambient light Brightness value compares, and control unit 43 adjusts the brightness value of LCD backlight component 1 according to comparative result, reaches the effect of environment induction Fruit, without configuring special ambient light sensor, reduce the use of ambient light sensor.In this way, movement of the present utility model Distance perspective can be achieved by infrared transmission module 3 and camera 4 in terminal should be with the function of environment photoinduction, easily reality simple in construction It is existing, so as to reduce the stacking space of mobile terminal internal components, the volume of mobile terminal is reduced, reduces production cost.

Further, since reducing distance/ambient light sensor, special gauge hole need not be opened up on cover plate 5, is lifted The tailored appearance degree of mobile terminal shell, Consumer's Experience is lifted, reduce perforate procedure.

Further, the mobile terminal also includes receiver, and the receiver and camera 4 are respectively positioned in the perforate.It is existing Gauge hole, the hole of front camera 4, listening bore are designed with the cover plate 5 of mobile terminal, to realize various functions.However, mesh Gauge hole, the hole of front camera 4, listening bore on preceding mobile terminal are typically all that perforate is distinguished on cover plate 5, so that There are three separate apertures on cover plate 5, cause that outward appearance is wordy, Consumer's Experience is deteriorated.In the present embodiment, by receiver and camera 4 are integrated in a perforate of cover plate 5, so, only need to open up one on the cover plate 5 of mobile terminal of the present utility model and open Hole, the number of openings is reduced as far as, so as to improve the tailored appearance degree of mobile terminal cover plate 5, improves Consumer's Experience.

It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property includes, so that process, method, article or device including a series of elements not only include those key elements, and And also include the other element being not expressly set out, or also include for this process, method, article or device institute inherently Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this Other identical element also be present in the process of key element, method, article or device.

Above-mentioned the utility model embodiment sequence number is for illustration only, does not represent the quality of embodiment.

Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on such understanding, the technical solution of the utility model is substantially in other words to existing skill The part that art contributes can be embodied in the form of software product, and the computer software product is stored in a storage and is situated between In matter (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal (can be mobile phone, computer, service Device, air conditioner, or network equipment etc.) perform each embodiment of the utility model described in method.

Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to The embodiment stated, above-mentioned embodiment is only schematical, rather than restricted, this area it is common Technical staff is not departing from the utility model aims and scope of the claimed protection situation under enlightenment of the present utility model Under, many forms can be also made, these are belonged within protection of the present utility model.

Claims (10)

1. A kind of 1. light sensitive device, it is characterised in that including liquid crystal display LCD backlight component, display screen, infrared transmission module with And camera；The LCD backlight component and display screen superposition are set, and the infrared transmission module is to LCD backlight component or display For screen transmitting infrared light outwards to export infrared light, the camera is used to receive reflects the infrared light returned through foreign object.
2. 2. light sensitive device as claimed in claim 1, it is characterised in that the infrared transmission module and the LCD backlight component Backlight be located at same installation position, the LCD backlight flexible PCB electricity of the infrared transmission module and the LCD backlight component Connection.
3. 3. light sensitive device as claimed in claim 2, it is characterised in that the LCD backlight component includes light guide plate, described infrared Incidence surface of the light-emitting area of transmitter module towards the light guide plate.
4. 4. light sensitive device as claimed in claim 1, it is characterised in that the camera includes infrared photosensitive unit, for connecing Receive the infrared light reflected by foreign object that infrared transmission module is sent.
5. 5. light sensitive device as claimed in claim 4, it is characterised in that the camera also includes processing unit and control is single Member, the infrared photosensitive unit, processing unit, control unit and LCD backlight component are sequentially connected.
6. 6. light sensitive device as claimed in claim 4, it is characterised in that the camera also includes what is electrically connected with processing module Light sensor, the light sensor are used for the brightness for detecting ambient light.
7. 7. light sensitive device as claimed in claim 6, it is characterised in that the light sensor is cmos sensor.
8. 8. light sensitive device as claimed in claim 1, it is characterised in that the infrared transmission module is infrared LED lamp.
9. 9. a kind of mobile terminal, it is characterised in that the mobile terminal includes housing and claim 1 to 8 any one institute The light sensitive device stated, for the light sensitive device in the housing, the housing front is provided with cover plate, and the cover plate is provided with and opened Hole, the camera are corresponding with the position of opening.
10. 10. mobile terminal as claimed in claim 9, it is characterised in that the mobile terminal also includes receiver, the receiver and Camera is respectively positioned in the perforate.