CN218416349U - Touch display switch circuit and touch display screen - Google Patents
Touch display switch circuit and touch display screen Download PDFInfo
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- CN218416349U CN218416349U CN202222374829.0U CN202222374829U CN218416349U CN 218416349 U CN218416349 U CN 218416349U CN 202222374829 U CN202222374829 U CN 202222374829U CN 218416349 U CN218416349 U CN 218416349U
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Abstract
The application provides a touch display switch circuit and a touch display screen. The touch display switch circuit comprises a touch detection circuit and a display switch circuit; the touch detection circuit comprises a touch sensor and a touch converter; the display switch circuit comprises a first electronic switch tube, a second electronic switch tube and a first resistor, wherein the control end of the first electronic switch tube is connected with the output end of the touch converter, the first end of the first electronic switch tube is connected with the control end of the second electronic switch tube, the first end of the second electronic switch tube is used for being connected with a reference power supply, and the second end of the second electronic switch tube is used for being connected with the switch control end of the display panel. When the touch is made, the voltage output by the touch converter switches on the first electronic switch tube, so that the two electronic switch tubes are switched on, the display function of the display panel is convenient to trigger, gaps on equipment caused by additionally arranging keys are avoided, and the waterproof performance of the equipment adopting the touch display switch circuit is effectively improved.
Description
Technical Field
The utility model relates to a lamp plate technical field especially relates to a touch display switch circuit and touch display screen.
Background
Common battery lamp plate adopts key signal control lamp plate to show battery power, and the colour that generally can adopt the RGB lamp distinguishes to show or adopts a plurality of LED lamps to show. When the key is pressed, the pin distributed by the MCU detects a high level, and the program is started to control the lamp panel to display the current battery power. In electric bicycle and electric motorcycle car field, the battery that uses is the scheme that adopts button control lamp plate mostly, and the hole site can be reserved for the button to the shell when structural design, uses the silica gel cover to protect.
However, the gaps of the keys reserved on the use equipment of the traditional battery lamp panel are easy to cause poor sealing performance, and particularly under water environment, a series of faults can occur due to the fact that the gaps reserved on the battery mould for the holes of the keys are used for soaking the batteries.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a touch display switch circuit and touch display screen who effectively improves waterproof performance.
The purpose of the utility model is realized through the following technical scheme:
a touch display switch circuit comprising: a touch detection circuit and a display switch circuit; the touch detection circuit comprises a touch sensor and a touch converter, the touch sensor is used for acquiring touch signals, and the touch sensor is connected with the input end of the touch converter; the display switch circuit comprises a first electronic switch tube, a second electronic switch tube and a first resistor, wherein the control end of the first electronic switch tube is connected with the output end of the touch converter, the first end of the first electronic switch tube is connected with the control end of the second electronic switch tube, the second end of the first electronic switch tube is grounded, the first end of the second electronic switch tube is used for being connected with a reference power supply, the first end of the second electronic switch tube is also connected with the first end of the first resistor, the second end of the first resistor is connected with the control end of the second electronic switch tube, and the second end of the second electronic switch tube is used for being connected with the switch control end of the display panel.
In one embodiment, the touch detection circuit further includes a second resistor, the touch sensor is connected to a first end of the second resistor, and a second end of the second resistor is connected to the input end of the touch converter.
In one embodiment, the display switch circuit further includes a third resistor, the control terminal of the second electronic switch tube is connected to the first terminal of the third resistor, and the second terminal of the third resistor is connected to the first terminal of the first electronic switch tube.
In one embodiment, the display switch circuit further includes a display voltage regulator tube, the first end of the second electronic switch tube is connected with the positive electrode of the display voltage regulator tube, and the negative electrode of the display voltage regulator tube is connected with the control end of the second electronic switch tube.
In one embodiment, the display switch circuit further includes a display diode, an output terminal of the touch converter is connected to an anode of the display diode, and a cathode of the display diode is connected to the control terminal of the first electronic switch tube.
In one embodiment, the display switch circuit further includes a fourth resistor, the output terminal of the touch converter is connected to a first terminal of the fourth resistor, and a second terminal of the fourth resistor is connected to the control terminal of the first electronic switch tube.
In one embodiment, the display switch circuit further includes a filter capacitor, the control terminal of the first electronic switch tube is connected to the first terminal of the filter capacitor, and the second terminal of the filter capacitor is grounded.
In one embodiment, the display switch circuit further includes a fifth resistor, the first terminal of the filter capacitor is connected to the first terminal of the fifth resistor, and the second terminal of the fifth resistor is grounded.
In one embodiment, the first electronic switching tube is an NPN-type triode, the second electronic switching tube is a P-type MOS tube, and the output end of the touch converter is configured to output a high level when the touch sensor collects a touch signal.
A touch display screen comprises the touch display switch circuit in any one of the embodiments.
Compared with the prior art, the utility model discloses at least, following advantage has:
when the touch is made, the voltage output by the touch converter switches on the first electronic switch tube, so that the potential of the control end of the second electronic switch tube is changed, the two electronic switch tubes are switched on, the output voltage of the reference power supply is the same as the voltage of the switch control end of the display panel, the display function of the display panel is convenient to trigger, the display of the display panel is started without independently setting keys, gaps on equipment caused by additionally arranging the keys are avoided, and the waterproof performance of the equipment adopting the touch display switch circuit is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a circuit diagram of a touch display switch circuit in one embodiment;
FIG. 2 is a circuit diagram of a touch detection circuit of the touch display switch circuit of FIG. 1;
fig. 3 is a circuit diagram of a display switch circuit of the touch display switch circuit shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model relates to a touch display switch circuit. In one embodiment, the touch display switch circuit includes a touch detection circuit and a display switch circuit. The touch detection circuit includes a touch sensor and a touch transducer. The touch sensor is used for collecting touch signals and is connected with the input end of the touch converter. The display switch circuit comprises a first electronic switch tube, a second electronic switch tube and a first resistor. The control end of the first electronic switch tube is connected with the output end of the touch converter, the first end of the first electronic switch tube is connected with the control end of the second electronic switch tube, and the second end of the first electronic switch tube is grounded. The first end of the second electronic switch tube is used for being connected with a reference power supply, the first end of the second electronic switch tube is further connected with the first end of the first resistor, the second end of the first resistor is connected with the control end of the second electronic switch tube, and the second end of the second electronic switch tube is used for being connected with the switch control end of the display panel. When there is the touch, the voltage of touch converter output switches on first electronic switch pipe for the potential change of the control end of second electronic switch pipe, thereby make two electronic switch pipes switch on, and then make reference power's output voltage the same with the voltage of display panel's on-off control end, be convenient for trigger display panel's display function, need not to set up the button alone and open display panel's demonstration, avoided the gap on the equipment that addds the button and lead to, the waterproof performance of the equipment that adopts touch display switch circuit has been improved effectively.
Please refer to fig. 1, which is a circuit diagram of a touch display switch circuit according to an embodiment of the present invention.
The touch display switch circuit 10 of an embodiment includes a touch detection circuit 100 and a display switch circuit 200. Referring to fig. 2, the touch detection circuit 100 includes a touch sensor S1 and a touch converter U1. The touch sensor S1 is used for collecting touch signals, and the touch sensor S1 is connected with the input end of the touch converter U1. Referring to fig. 3, the display switch circuit 200 includes a first electronic switch Q45, a second electronic switch M1 and a first resistor R197. The control end of the first electronic switch tube Q45 is connected with the output end SW of the touch converter U1, the first end of the first electronic switch tube Q45 is connected with the control end of the second electronic switch tube M1, and the second end of the first electronic switch tube Q45 is grounded. The first end of the second electronic switch tube M1 is used for being connected with a reference power supply B +, the first end of the second electronic switch tube M1 is further connected with the first end of the first resistor R197, the second end of the first resistor R197 is connected with the control end of the second electronic switch tube M1, and the second end of the second electronic switch tube M1 is used for being connected with the switch control end SW1 of the display panel. The touch converter U1 is configured to convert a touch state into a current or voltage signal, for example, the touch sensor S1 is a capacitive touch sensor, so as to convert a touch signal when the touch sensor S1 is in contact with a finger of an operator into a signal with a capacitance value change, so that the touch converter U1 can output an electrical signal with a corresponding amplitude.
In this embodiment, when there is a touch, the voltage output by the touch converter U1 switches on the first electronic switch tube Q45, so that the potential of the control end of the second electronic switch tube M1 changes, so that the two electronic switch tubes are switched on, and further the output voltage of the reference power supply B + is the same as the voltage of the switch control end SW1 of the display panel, which is convenient for triggering the display function of the display panel, and it is not necessary to separately set a key to start the display of the display panel, thereby avoiding a gap on the device caused by the addition of the key, and effectively improving the waterproof performance of the device adopting the touch display switch circuit 200.
In one embodiment, referring to fig. 2, the touch detection circuit 100 further includes a second resistor R1, the touch sensor S1 is connected to a first end of the second resistor R1, and a second end of the second resistor R1 is connected to an input end of the touch converter U1. In this embodiment, the second resistor R1 is located between the touch sensor S1 and the touch converter U1, that is, the second resistor R1 is connected in series between the touch sensor S1 and the input end of the touch converter U1, and the second resistor R1 limits the current of the touch signal acquired by the touch sensor S1, so as to avoid the situation that the current at the input end of the touch converter U1 is too large, thereby reducing the probability that the touch converter U1 is damaged due to too large input current, and ensuring the normal operation of the touch converter U1.
In one embodiment, referring to fig. 3, the display switch circuit 200 further includes a third resistor R196, a control terminal of the second electronic switch transistor M1 is connected to a first terminal of the third resistor R196, and a second terminal of the third resistor R196 is connected to a first terminal of the first electronic switch transistor Q45. In this embodiment, the third resistor R196 is located between the first electronic switch tube Q45 and the second electronic switch tube M1, that is, the third resistor R196 is connected in series between the first end of the first electronic switch tube Q45 and the control end of the second electronic switch tube M1, and the third resistor R196 pulls up the voltage at the control end of the second electronic switch tube M1, so that the voltage at the control end of the second electronic switch tube M1 is raised, and the turn-on voltage on the second electronic switch tube M1 satisfies its own bias voltage, thereby ensuring the normal operation of the second electronic switch tube M1.
In one embodiment, referring to fig. 3, the display switch circuit 200 further includes a display regulator ZC7, the first end of the second electronic switch ZC 1 is connected to the positive electrode of the display regulator ZC7, and the negative electrode of the display regulator ZC7 is connected to the control end of the second electronic switch ZC 1. In this embodiment, the display regulator ZC7 is connected in parallel between the control end and the first end of the second electronic switching tube M1, so that a stable voltage difference exists between the first end and the control end of the second electronic switching tube M1, and when the second electronic switching tube M1 is turned on, the first end and the control end of the second electronic switching tube M1 are biased positively, thereby ensuring normal operation of the second electronic switching tube M1.
In one embodiment, referring to fig. 3, the display switch circuit 200 further includes a display diode D60, the output end SW of the touch converter U1 is connected to the positive electrode of the display diode D60, and the negative electrode of the display diode D60 is connected to the control end of the first electronic switch Q45. In this embodiment, the display diode D60 rectifies the output signal of the touch converter U1, so that the control signal at the control end of the first electronic switch Q45 is stable, and stable feedback of the first electronic switch Q45 to the touch sensor S1 is ensured, thereby ensuring accurate response to the touch signal.
In one embodiment, referring to fig. 3, the display switch circuit 200 further includes a fourth resistor R198, the output end SW of the touch converter U1 is connected to a first end of the fourth resistor R198, and a second end of the fourth resistor R198 is connected to a control end of the first electronic switch Q45. In this embodiment, the fourth resistor R198 is located between the touch switch U1 and the first electronic switch Q45, that is, the fourth resistor R198 is connected in series between the touch switch U1 and the control end of the first electronic switch Q45, and the fourth resistor R198 limits the current of the control end of the first electronic switch Q45, so as to avoid the situation that the current at the control end of the first electronic switch Q45 is too large, thereby reducing the probability that the first electronic switch Q45 is damaged due to too large input current, and ensuring the normal operation of the first electronic switch Q45.
In one embodiment, referring to fig. 3, the display switch circuit 200 further includes a filter capacitor C4, the control terminal of the first electronic switch Q45 is connected to the first terminal of the filter capacitor C4, and the second terminal of the filter capacitor C4 is grounded. In this embodiment, the first end of the filter capacitor C4 is connected to the control end of the first electronic switch Q45, and the second end of the filter capacitor C4 is grounded to the second end of the first electronic switch Q45, so that the filter capacitor C4 is connected in parallel between the control end and the second end of the first electronic switch Q45, and the filter capacitor C4 filters the electric signal at the control end of the first electronic switch Q45, thereby ensuring that the input signal of the first electronic switch Q45 is stable.
Further, referring to fig. 3, the display switch circuit 200 further includes a fifth resistor R199, a first end of the filter capacitor C4 is connected to a first end of the fifth resistor R199, and a second end of the fifth resistor R199 is grounded. In this embodiment, the filter capacitor C4 is charged during the filtering process, and when the first electronic switching tube Q45 is turned off, electrons on the filter capacitor C4 are released through the fifth resistor R199, so that the electric energy on the filter capacitor C4 is converted into heat energy through the fifth resistor R199 to be released, that is, the fifth resistor R199 serves as a discharging loop of the filter capacitor C4. Moreover, the fifth resistor R199 is connected in parallel before the control terminal and the second terminal of the first electronic switch Q45, so that when the switch is turned on, the control terminal and the second terminal of the first electronic switch Q45 are rapidly forward biased.
In another embodiment, the first electronic switch Q45 is an NPN transistor, the second electronic switch M1 is a P-type MOS transistor, and the output end SW of the touch converter U1 is configured to output a high level when the touch sensor S1 acquires a touch signal. In this embodiment, the first end of the first electronic switching tube Q45 is a collector of an NPN-type triode, the second end of the first electronic switching tube Q45 is an emitter of the NPN-type triode, and the control end of the first electronic switching tube Q45 is a base of the NPN-type triode. The first end of the second electronic switching tube M1 is a drain electrode of the P-type MOS tube, the second end of the second electronic switching tube M1 is a source electrode of the P-type MOS tube, and the control end of the second electronic switching tube M1 is a gate electrode of the P-type MOS tube. Under the condition that the touch converter U1 outputs a high level, the first electronic switch tube Q45 is switched on for the high level, so that the electric potentials of the first end and the second end of the first electronic switch tube Q45 are close, the grid electrode of the second electronic switch tube M1 is at a low level, the second electronic switch tube M1 is switched on, the voltage of the reference power supply B + is conveniently used as the voltage of the switch control end SW1 of the display panel, and the display panel is conveniently started.
In another embodiment, the first electronic switching tube may also be a PNP type triode, that is, the first end of the first electronic switching tube is a collector of the PNP type triode, the second end of the first electronic switching tube is an emitter of the PNP type triode, the control end of the first electronic switching tube is a base of the PNP type triode, and the first electronic switching tube is turned on at a low level. The output end of the touch converter is used for outputting a low level when the touch sensor acquires a touch signal, and the second electronic switch tube is a P-type MOS tube.
In one embodiment, the present application further provides a touch display screen, including the touch display switch circuit described in any of the above embodiments. In this embodiment, the touch display switch circuit includes a touch detection circuit and a display switch circuit. The touch detection circuit includes a touch sensor and a touch transducer. The touch sensor is used for collecting touch signals and is connected with the input end of the touch converter. The display switch circuit comprises a first electronic switch tube, a second electronic switch tube and a first resistor. The control end of the first electronic switch tube is connected with the output end of the touch converter, the first end of the first electronic switch tube is connected with the control end of the second electronic switch tube, and the second end of the first electronic switch tube is grounded. The first end of the second electronic switch tube is used for being connected with a reference power supply, the first end of the second electronic switch tube is further connected with the first end of the first resistor, the second end of the first resistor is connected with the control end of the second electronic switch tube, and the second end of the second electronic switch tube is used for being connected with the switch control end of the display panel. When there is the touch, the voltage of touch converter output switches on first electronic switch pipe for the potential change of the control end of second electronic switch pipe, thereby make two electronic switch pipes switch on, and then make reference power's output voltage the same with the voltage of display panel's on-off control end, be convenient for trigger display panel's display function, need not to set up the button alone and open display panel's demonstration, avoided the gap on the equipment that addds the button and lead to, touch display screen's waterproof performance has been improved effectively.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A touch display switch circuit, comprising:
the touch detection circuit comprises a touch sensor and a touch converter, the touch sensor is used for acquiring touch signals, and the touch sensor is connected with the input end of the touch converter;
the display switch circuit comprises a first electronic switch tube, a second electronic switch tube and a first resistor, wherein the control end of the first electronic switch tube is connected with the output end of the touch converter, the first end of the first electronic switch tube is connected with the control end of the second electronic switch tube, the second end of the first electronic switch tube is grounded, the first end of the second electronic switch tube is used for being connected with a reference power supply, the first end of the second electronic switch tube is also connected with the first end of the first resistor, the second end of the first resistor is connected with the control end of the second electronic switch tube, and the second end of the second electronic switch tube is used for being connected with the switch control end of the display panel.
2. The touch display switch circuit of claim 1, wherein the touch detection circuit further comprises a second resistor, the touch sensor is connected to a first end of the second resistor, and a second end of the second resistor is connected to an input of the touch converter.
3. The touch display switch circuit of claim 1, further comprising a third resistor, wherein the control terminal of the second electronic switch tube is connected to the first terminal of the third resistor, and wherein the second terminal of the third resistor is connected to the first terminal of the first electronic switch tube.
4. The touch display switch circuit according to claim 1, further comprising a display voltage regulator tube, wherein a first end of the second electronic switch tube is connected to an anode of the display voltage regulator tube, and a cathode of the display voltage regulator tube is connected to a control end of the second electronic switch tube.
5. The touch display switch circuit of claim 1, further comprising a display diode, wherein an output terminal of the touch converter is connected to an anode of the display diode, and a cathode of the display diode is connected to the control terminal of the first electronic switch tube.
6. The touch display switch circuit of claim 1, further comprising a fourth resistor, wherein the output terminal of the touch converter is connected to a first terminal of the fourth resistor, and a second terminal of the fourth resistor is connected to the control terminal of the first electronic switch tube.
7. The touch display switch circuit of claim 1, further comprising a filter capacitor, wherein the control terminal of the first electronic switch tube is connected to the first terminal of the filter capacitor, and the second terminal of the filter capacitor is grounded.
8. The touch display switch circuit of claim 7, further comprising a fifth resistor, wherein a first terminal of the filter capacitor is connected to a first terminal of the fifth resistor, and wherein a second terminal of the fifth resistor is connected to ground.
9. The touch display switch circuit according to claim 1, wherein the first electronic switch is an NPN transistor, the second electronic switch is a P-type MOS transistor, and an output end of the touch converter is configured to output a high level when the touch sensor collects a touch signal.
10. A touch display screen characterized by comprising the touch display switch circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222374829.0U CN218416349U (en) | 2022-09-06 | 2022-09-06 | Touch display switch circuit and touch display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222374829.0U CN218416349U (en) | 2022-09-06 | 2022-09-06 | Touch display switch circuit and touch display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218416349U true CN218416349U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222374829.0U Active CN218416349U (en) | 2022-09-06 | 2022-09-06 | Touch display switch circuit and touch display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218416349U (en) |
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2022
- 2022-09-06 CN CN202222374829.0U patent/CN218416349U/en active Active
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