CN207624355U - A kind of touching liquid-crystal display screen - Google Patents
A kind of touching liquid-crystal display screen Download PDFInfo
- Publication number
- CN207624355U CN207624355U CN201721819532.3U CN201721819532U CN207624355U CN 207624355 U CN207624355 U CN 207624355U CN 201721819532 U CN201721819532 U CN 201721819532U CN 207624355 U CN207624355 U CN 207624355U
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- resistance
- operational amplifier
- infrared
- diode
- triode
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Abstract
The utility model is related to technical field of electronic accessories, refer in particular to a kind of touching liquid-crystal display screen, including touch tablet, control panel, transparent panel and display board, the touch tablet is sticked with the control panel in the same end of the transparent panel, and the display board is arranged in one end far from the touch tablet of the control panel；It is provided with infrared transmitting circuit on the control panel, for emitting infrared-ray, infrared receiving circuit and control circuit.The cooperation that the utility model passes through infrared transmitting circuit, infrared receiving circuit and control circuit three, it realizes when people need not see the utility model, the utility model is in breath screen state automatically, to reduce the kwh loss for the mobile phone for being equipped with the utility model.
Description
Technical field
The utility model is related to technical field of electronic accessories, refer in particular to a kind of touching liquid-crystal display screen.
Background technology
People can sometimes forget screen locking and mobile phone is put aside, mobile phone screen is allowed to be always maintained at when using mobile phone
Shinny state.In this state, the electricity of mobile phone is equal to and is lost with holding for no reason, and being unfavorable for the long-time of mobile phone makes
With.
Invention content
The utility model provides a kind of touching liquid-crystal display screen for problem of the prior art, can not see the mobile phone in people
When, breath screen state is carried out automatically, to save electricity.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
A kind of touching liquid-crystal display screen provided by the utility model ,=include touch tablet, control panel, transparent panel and display
Plate, the touch tablet are sticked with the control panel in the same end of the transparent panel, and the display board is arranged in the control
One end far from the touch tablet of plate；It is provided on the control panel：
Infrared transmitting circuit, for emitting infrared-ray；
Infrared receiving circuit, for receive it is emitted after infrared-ray；
Control circuit, the infrared-ray for being received according to the infrared receiving circuit, controls the light on and off of the display board.
Further, the transparent panel is provided with infrared emission hole and infrared receiver hole, the outer launch hole and described red
It is provided with light insulation pad between outer receiver hole.
Further, the infrared transmitting circuit includes infrared-emitting diode VD1, triode V1, resistance R1 and R2, institute
The one end for stating resistance R1 is connect with the base stage pole of one end of resistance R2, triode V1, the other end and the power supply VCC of the resistance R2
End connection, the anode of the infrared-emitting diode VD1 are connect with the ends power supply VCC, the cathode of the infrared-emitting diode VD1
It is connect with the emitter pole of triode V1；The infrared transmitting circuit further includes a current-limiting resistance, and the one of the current-limiting resistance
End is connect with the collector pole of triode V1, and the other end of the current-limiting resistance is connect with the ends power supply GND.
Further, the current-limiting resistance includes resistance R3, R4 and R5, and described resistance R3, R4 and R5 are in parallel；It is described
One end of resistance R3, R4, R5 are connect with the collector pole of triode V1, and the other end of described R3, R4, R5 and the ends power supply GND connect
It connects.
Further, including infrared signal Acquisition Circuit, diode D5, resistance R6, operational amplifier T2, diode D4 and
Low-pass filter circuit, the infrared signal Acquisition Circuit are connected to the inverting input of the operational amplifier T2, two pole
Pipe D4 is arranged between the inverting input and output end of the operational amplifier T2, and the anode of the diode D5 is connected to institute
The output end of operational amplifier T2 is stated, the cathode of the diode D5 is connected to the infrared signal Acquisition Circuit；The resistance
R6 is arranged between the inverting input and the infrared signal Acquisition Circuit of the operational amplifier T2；The low-pass filtering electricity
Road is connected to the inverting input of the operational amplifier T2.
Further, the infrared signal Acquisition Circuit operational amplifier T1, triode Q, diode D6, diode D2
With resistance R8, the cathode of the diode D6, the diode D2 anode be all connected to the base stage of the triode Q, it is described
The positive of diode D2 is additionally provided with resistance R7 between the base stage of the triode Q, and the cathode of the diode D2 is connected to
The collector of the triode Q；The anode of the diode D6 is connected to the emitter of the triode Q, the triode Q's
Emitter is connected with resistance R9, the resistance R9 ground connection；The anode of the diode is for connecing electricity；The current collection of the triode Q
Pole is grounded through resistance R8, and resistance R10 is provided between the inverting input and output end of the operational amplifier T1；The operation
Capacitance C1 is additionally provided between the output end of amplifier T1 and the cathode of the diode D5, the capacitance C1 is put with the operation
It is provided with resistance R11 between the inverting input of big device T2.
Further, the low-pass filter circuit include operational amplifier T3, operational amplifier T4, capacitance C2-C5 and
The inverting input of resistance R12-16, the operational amplifier T3 are connected to the operation through the resistance R14, the capacitance C2
The output end of amplifier T3, the in-phase input end of the operational amplifier T3 are connected to the output end of the operational amplifier T3；
The resistance R14 is connected to the inverting input of the operational amplifier T2 through the resistance R13 and the resistance R12；It is described
The inverting input of operational amplifier T3 and the junction of the resistance R14 are grounded through the capacitance C3；The operational amplifier
The output end of T3 is connected to the inverse output terminal of the operational amplifier T4, the resistance through the resistance R15 and resistance R16
The junction of R15 and the resistance R16 are connected to the output end of the operational amplifier T4 through the capacitance C4, and the operation is put
The in-phase input end of big device T4 is connect with output end, and the junction of the operational amplifier T4 and resistance R16 is through capacitance C5
Ground connection.
The beneficial effects of the utility model：The utility model by being provided with infrared transmitting circuit and infrared receiving circuit,
When people when the utility model is used, infrared-ray is launched by infrared transmitting circuit, then infrared receiving circuit receive through
The reflected infrared-ray of human body, judges that people checks screen, to allow control circuit control display board to be in work shape
State；When the face of people leaves the utility model, since infrared receiving circuit does not receive reflected infrared-ray, because
This can send a signal to control circuit, be extinguished by control circuit control display board.The utility model passes through infrared transmitting circuit, red
The cooperation of outer receiving circuit and control circuit three is realized when people need not see the utility model, and the utility model is automatic
In breath screen state, to reduce the kwh loss for the mobile phone for being equipped with the utility model.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Fig. 2 is another visual angle schematic diagram of the utility model.
Fig. 3 is the circuit diagram of the utility model.
Fig. 4 is the circuit diagram of the infrared transmitting circuit of the utility model.
Fig. 5 is the circuit diagram of the infrared receiving circuit of the utility model.
Reference numeral：1-touch tablet, 2-control panels, 3-transparent panels, 4-display boards, 11-infrared emission holes, 12-
Infrared receiver hole, 21-infrared transmitting circuits, 22-infrared receiving circuits, 23-control circuits, 221-infrared signals acquisition electricity
Road, 222-low-pass filter circuits.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.Below in conjunction with attached drawing 1 to attached drawing 5 to this practicality
It is novel to be described in detail.
A kind of touching liquid-crystal display screen provided by the utility model, including touch tablet 1, control panel 2, transparent panel 3 and display
Plate 4, the touch tablet 1 are sticked with the control panel 2 in the same end of the transparent panel 3, and the display board 4 is arranged described
One end far from the touch tablet 1 of control panel 2；It is provided on the control panel 2：
Infrared transmitting circuit 21, for emitting infrared-ray；
Infrared receiving circuit 22, for receiving infrared-ray after reflection；
Control circuit 23, the infrared-ray for being received according to the infrared receiving circuit 22, controls the display board 4
Light on and off.
The utility model is mounted on mobile phone, when people is in the use mobile phone, is launched by infrared transmitting circuit 21 red
Outer ray, then infrared receiving circuit 22 receive through the reflected infrared-ray of human body, judge that people checks screen, from
And it is in running order to allow control circuit 23 to control display board 4；When the face of people leaves the utility model, due to infrared receiver
Circuit 22 does not receive reflected infrared-ray, therefore can send a signal to control circuit 23, is controlled by control circuit 23
Display board 4 processed extinguishes.The utility model is matched by infrared transmitting circuit 21, infrared receiving circuit 22 and 23 three's of control circuit
It closes, realizes when people need not see the utility model, the utility model is in breath screen state automatically, is equipped with to reduce
The kwh loss of the mobile phone of the utility model.
In the present embodiment, the transparent panel 3 is provided with infrared emission hole 11 and infrared receiver hole 12, the infrared emission
Light insulation pad (being not marked in figure) is provided between hole 11 and the infrared receiver hole 12.By being provided with infrared emission hole 11 and red
Outer receiver hole 12 so that infrared-ray only can just reflect meeting infrared receiver hole 12 after touching human body, avoid infrared hair
During the infrared-ray that transmit-receive radio road 21 emits just emits to red external circuits inside the utility model, to ensure that this practicality is new
The reliability of type.
In the present embodiment, the infrared transmitting circuit 21 includes infrared-emitting diode VD1, triode V1, resistance R1
And R2, one end of the resistance R1 are connect with the base stage of one end of resistance R2, triode V1, the other end and the electricity of the resistance R2
The source ends VCC connect, and the anode of the infrared-emitting diode VD1 is connect with the ends power supply VCC, the infrared-emitting diode VD1
Cathode connect with the emitter of triode V1；The infrared transmitting circuit 21 further includes a current-limiting resistance, the current limliting electricity
One end of resistance is connect with the collector pole of triode V1, and the other end of the current-limiting resistance is connect with the ends power supply GND.
Specifically, the current-limiting resistance includes resistance R3, R4 and R5, described resistance R3, R4 and R5 are in parallel；The resistance
One end of R3, R4, R5 are connect with the collector pole of triode V1, and the other end of described R3, R4, R5 connect with the ends power supply GND
It connects.
Compared with prior art, the current-limiting resistance (i.e. resistance R3, R4 and R5) of the utility model is provided in triode V1
Collector so that triode V1 works, to allow infrared transmitting circuit 21 just in conducting in Baohe District
It is not only low in energy consumption, additionally it is possible to make the driving current of infrared-emitting diode VD1 larger, so that infrared communication often when work
When transmission power it is larger, to improve the communication distance and angle of the utility model, it is ensured that people is not seeing the mobile phone
In the case of the utility model just cease screen.
In the present embodiment, including infrared signal Acquisition Circuit 221, diode D5, resistance R11, operational amplifier T2, two
Pole pipe D4 and low-pass filter circuit 222, the reverse phase that the infrared signal Acquisition Circuit 221 is connected to the operational amplifier T2 are defeated
Enter end, the diode D4 is arranged between the inverting input and output end of the operational amplifier T2, the diode D5
Anode be connected to the output end of the operational amplifier T2, the cathode of the diode D5 is connected to the infrared signal acquisition
Circuit 221；Inverting input and the infrared signal Acquisition Circuit in the operational amplifier T2 is arranged in the resistance R11
Between 221；The low-pass filter circuit 222 is connected to the inverting input of the operational amplifier T2.
Compared to infrared receiving module on the market, infrared receiving circuit 22 is anti-without setting used by the utility model
Interference unit can also have good anti-jamming effectiveness, therefore simpler with structure, and can realize on the market red
The signal receiving function of outer receiving module leads to circuit work(because of component damage to be conducive to save cost, and reduce
The phenomenon that capable of failing, to improve the stability of the utility model.
Specifically, the infrared signal Acquisition Circuit 221 includes operational amplifier T1, triode Q, diode D6, two poles
Pipe D2 and resistance R8, the cathode of the diode D6, the diode D2 anode be all connected to the base stage of the triode Q,
The positive cathode that resistance R7, the diode D2 are additionally provided between the base stage of the triode Q of the diode D2 connects
It is connected to the collector of the triode Q；The anode of the diode D6 is connected to the emitter of the triode Q, three pole
The emitter of pipe Q is connected with resistance R9, the resistance R9 ground connection；The anode of the diode is for connecing electricity；The triode Q's
Collector is grounded through resistance R8, and resistance R10 is provided between the inverting input and output end of the operational amplifier T1；It is described
Capacitance C1, the capacitance C1 and the fortune are additionally provided between the output end of operational amplifier T1 and the cathode of the diode D5
It is provided with resistance R11 between the inverting input of calculation amplifier T2.
Specifically, the low-pass filter circuit 222 include operational amplifier T3, operational amplifier T4, capacitance C2-C5 and
The inverting input of resistance R12-16, the operational amplifier T3 are connected to the operation through the resistance R14, the capacitance C2
The output end of amplifier T3, the in-phase input end of the operational amplifier T3 are connected to the output end of the operational amplifier T3；
The resistance R14 is connected to the inverting input of the operational amplifier T2 through the resistance R13 and the resistance R12；It is described
The inverting input of operational amplifier T3 is grounded through the capacitance C3；The output end of the operational amplifier T3 is through the resistance
R15 and resistance R16 is connected to the inverse output terminal of the operational amplifier T4, the connection of the resistance R15 and the resistance R16
Place is connected to the output end of the operational amplifier T4 through the capacitance C4, the in-phase input end of the operational amplifier T4 with it is defeated
Outlet connects, and the inverting input of the operational amplifier T4 is grounded through capacitance C5.
The utility model uses operational amplifier T3 and operational amplifier T4 constitutes dual low-pass filter circuit, significantly
The anti-interference ability for improving circuit, to improve the stability of work so that the breath screen effect of the utility model more may be used
It leans on.
The above is only the utility model preferred embodiment, is not made in any form to the utility model
Limitation, although the utility model is disclosed as above with preferred embodiment, is not limited to the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, is made when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, as long as being without departing from the content of the technical scheme of the utility model, foundation
The utility model technology refers to belonging to this practicality to any simple modification, equivalent change and modification made by above example
In the range of new technique scheme.
Claims (7)
1. a kind of touching liquid-crystal display screen, it is characterised in that：Including touch tablet, control panel, transparent panel and display board, the touch
Plate is sticked with the control panel in the same end of the transparent panel, and the display board is arranged in the control panel far from described
One end of touch tablet；It is provided on the control panel：
Infrared transmitting circuit, for emitting infrared-ray；
Infrared receiving circuit, for receive it is emitted after infrared-ray；
Control circuit, the infrared-ray for being received according to the infrared receiving circuit, controls the light on and off of the display board.
2. touching liquid-crystal display screen according to claim 1, it is characterised in that：The transparent panel is provided with infrared emission hole
With infrared receiver hole, light insulation pad is provided between the outer launch hole and the infrared receiver hole.
3. touching liquid-crystal display screen according to claim 1, it is characterised in that：The infrared transmitting circuit includes infrared hair
Penetrate diode VD1, triode V1, resistance R1 and R2, one end of the resistance R1 and one end of resistance R2, the base stage of triode V1
Pole connects, and the other end of the resistance R2 is connect with the ends power supply VCC, anode and the power supply VCC of the infrared-emitting diode VD1
End connection, the cathode of the infrared-emitting diode VD1 are connect with the emitter pole of triode V1；The infrared transmitting circuit
Further include a current-limiting resistance, one end of the current-limiting resistance is connect with the collector pole of triode V1, the current-limiting resistance it is another
One end is connect with the ends power supply GND.
4. touching liquid-crystal display screen according to claim 3, it is characterised in that：The current-limiting resistance include resistance R3,
R4 and R5, described resistance R3, R4 and R5 are in parallel；One end of described resistance R3, R4, R5 are connect with the collector pole of triode V1,
The other end of described R3, R4, R5 are connect with the ends power supply GND.
5. touching liquid-crystal display screen according to claim 1, it is characterised in that：Including infrared signal Acquisition Circuit, two poles
Pipe D5, resistance R6, operational amplifier T2, diode D4 and low-pass filter circuit, the infrared signal Acquisition Circuit are connected to institute
State the inverting input of operational amplifier T2, the diode D4 is arranged in the inverting input of the operational amplifier T2 and defeated
Between outlet, the anode of the diode D5 is connected to the output end of the operational amplifier T2, the cathode of the diode D5
It is connected to the infrared signal Acquisition Circuit；The resistance R6 is arranged in the inverting input of the operational amplifier T2 and described
Between infrared signal Acquisition Circuit；The low-pass filter circuit is connected to the inverting input of the operational amplifier T2.
6. touching liquid-crystal display screen according to claim 5, it is characterised in that：The infrared signal Acquisition Circuit operation is put
Big device T1, triode Q, diode D6, diode D2 and resistance R8, the cathode of the diode D6, the diode D2 are just
Pole is all connected to the base stage of the triode Q, and the positive of the diode D2 is additionally provided between the base stage of the triode Q
Resistance R7, the cathode of the diode D2 are connected to the collector of the triode Q；The anode of the diode D6 is connected to institute
The emitter of triode Q is stated, the emitter of the triode Q is connected with resistance R9, the resistance R9 ground connection；The diode
Anode is for connecing electricity；The collector of the triode Q through resistance R8 be grounded, the inverting input of the operational amplifier T1 with it is defeated
Resistance R10 is provided between outlet；It is also set up between the output end of the operational amplifier T1 and the cathode of the diode D5
There is capacitance C1, resistance R11 is provided between the capacitance C1 and the inverting input of the operational amplifier T2.
7. touching liquid-crystal display screen according to claim 6, it is characterised in that：The low-pass filter circuit includes that operation is put
Greatly described in the inverting input warp of device T3, operational amplifier T4, capacitance C2-C5 and resistance R12-16, the operational amplifier T3
Resistance R14, the capacitance C2 are connected to the output end of the operational amplifier T3, the in-phase input end of the operational amplifier T3
It is connected to the output end of the operational amplifier T3；The resistance R14 is connected to institute through the resistance R13 and the resistance R12
State the inverting input of operational amplifier T2；The junction of the inverting input of the operational amplifier T3 and the resistance R14
It is grounded through the capacitance C3；The output end of the operational amplifier T3 is connected to the operation through the resistance R15 and resistance R16
The junction of the inverse output terminal of amplifier T4, the resistance R15 and the resistance R16 are connected to the fortune through the capacitance C4
The output end of amplifier T4 is calculated, the in-phase input end of the operational amplifier T4 is connect with output end, the operational amplifier T4
It is grounded through capacitance C5 with the junction of the resistance R16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721819532.3U CN207624355U (en) | 2017-12-20 | 2017-12-20 | A kind of touching liquid-crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721819532.3U CN207624355U (en) | 2017-12-20 | 2017-12-20 | A kind of touching liquid-crystal display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207624355U true CN207624355U (en) | 2018-07-17 |
Family
ID=62820534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721819532.3U Expired - Fee Related CN207624355U (en) | 2017-12-20 | 2017-12-20 | A kind of touching liquid-crystal display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207624355U (en) |
-
2017
- 2017-12-20 CN CN201721819532.3U patent/CN207624355U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20211220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |