CN215933162U - Touch key, TFT and LED integrated display dimming drive multiplexing circuit and display - Google Patents
Touch key, TFT and LED integrated display dimming drive multiplexing circuit and display Download PDFInfo
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- CN215933162U CN215933162U CN202121782852.2U CN202121782852U CN215933162U CN 215933162 U CN215933162 U CN 215933162U CN 202121782852 U CN202121782852 U CN 202121782852U CN 215933162 U CN215933162 U CN 215933162U
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Abstract
The utility model provides a dimming driving multiplexing circuit for comprehensively displaying a touch key, a TFT (thin film transistor) and an LED (light emitting diode), which comprises a DCIN/UARTCON input circuit, a power supply circuit, a backlight adjusting circuit, a UART1 serial port communication circuit, a control processing circuit and a display driving circuit. The LED lamp ring and the TFT display are integrated, and the integrated touch technology, the TFT and the LED are integrally displayed, so that the LED lamp ring integrated display device has the characteristics of outstanding effect, optimized cost, simplified electricity and increased circuit operation reliability compared with the existing product.
Description
Technical Field
The utility model relates to the technical field of TFT and LED integrated display device structures with touch functions, in particular to a light-variable driving multiplexing circuit and a display for integrated display of touch keys, TFTs and LEDs.
Background
The LED display has the advantages of self-luminescence, high brightness and luminous efficiency, low power consumption, high stability, etc., and is widely used in various occasions.
With the continuous development of science and technology, touch screens, LEDs and TFTs are widely used in various fields, but the challenges are increased. At present, in the existing display module, a non-integrated LED and a TFT are not integrated for display, and meanwhile, a touch technology for touching a display screen is not integrated into the existing display module, so that extra waste of cost is caused;
in addition, the existing integrated LED adopts an appearance triode to display and drive, and the circuit is complex, so that the power consumption of the circuit is further caused.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a light-variable driving multiplexing circuit and a display for comprehensively displaying a touch key, a TFT and an LED, so as to solve the problems in the background art.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a dimming driving multiplexing circuit for touch key, TFT and LED integrated display comprises a DCIN/UART CON input circuit, a power supply circuit, a backlight adjusting circuit, a UART1 serial port communication circuit, a control processing circuit and a display driving circuit,
the DCIN/UART CON input circuit inputs working voltage through an interface CON1 and is used for providing working voltage for the dimming driving multiplexing circuit;
the power supply circuit receives the working voltage through an input interface VINI, outputs the working voltage through interfaces SW1, SW2 and SW3 respectively, and is used for forming the power supply circuit of the control processing circuit;
the backlight adjusting circuit receives the working voltage, upgrades and outputs TFT backlight boosting voltage through the backlight driver circuit, and controls the backlight current according to the input duty ratio of a backlight signal to realize the control of the backlight brightness;
the UART1 serial port communication circuit is connected with an external client control mainboard through mos tube output and carries out UART communication to receive the instruction of the external client control mainboard;
the control processing circuit is respectively connected with the DCIN/UART CON input circuit, the power supply circuit and the backlight adjusting circuit, receives the instruction of the external client control mainboard through the UART1 serial port communication circuit, and outputs the UART communication to LED lamp ring display information and TFT display information;
and the display driving circuit receives the LED lamp ring display information and the TFT display information and is used for carrying out LED lamp ring brightness dimming and TFT display.
As an improvement of the dimming drive multiplexing circuit for the comprehensive display of the TOUCH keys, the TFT and the LED, the utility model also comprises a TOUCH TOUCH key circuit, wherein the TOUCH TOUCH key circuit is connected with the control processing circuit, and the output interface of the TOUCH TOUCH key circuit at least comprises a TOUCH key interface and at least one TOUCH slide bar grade output interface.
The improved dimming drive multiplexing circuit for the comprehensive display of the touch key, the TFT and the LED also comprises a serial data conversion circuit and a TFT display drive control circuit, wherein the control processing circuit is connected with the TFT display drive control circuit through a mos tube of the serial data conversion circuit and is used for transmitting TFT display information.
As an improvement of the dimming driving multiplexing circuit for the comprehensive display of the touch key, the TFT and the LED, the UART1 serial port communication circuit comprises a signal isolation circuit, and the signal isolation circuit is used for blocking external communication interference when the UART1 serial port communication circuit is communicated with a client control mainboard.
As an improvement of the light-variable driving multiplexing circuit for the comprehensive display of the touch key, the TFT and the LED, the display driving circuit comprises an LED lamp ring display driving circuit and a TFT display driving circuit, wherein,
the LED lamp ring display driving circuit comprises an LED BULE driving circuit and an LED RED driving circuit connected with the LED BULE driving circuit, and the LED BULE driving circuit and the LED RED driving circuit are driven from a low level to a high level through a serial interface COM to realize dimming driving of the LED lamp ring from the lowest brightness to the highest brightness;
the TFT display driving circuit is communicated with the TFT display driving control circuit through a mos tube of the serial data conversion circuit, and the TFT display driving control circuit converts the TFT display information into RGB information and drives the TFT to display related information through an RGB I/F circuit.
As an improvement of the dimming driving multiplexing circuit for the comprehensive display of the touch keys, the TFT and the LED, the UART1 serial port communication circuit is based on an embedded operating system.
As an improvement of the light-variable driving multiplexing circuit for the comprehensive display of the touch key, the TFT and the LED, the control processing circuit adopts an 8-bit 51 standby low-power consumption chip, and the model number is as follows: SH79F 9261.
As an improvement of the light-variable driving multiplexing circuit for the comprehensive display of the touch key, the TFT and the LED, the TFT display driving control circuit adopts a 32-bit arm9 kernel embedded system chip, and the type number of the TFT display driving control circuit is as follows: ITE 9866.
As a second aspect of the utility model, a display is provided, which comprises the touch key, a TFT and a dimming drive multiplexing circuit for LED integrated display.
Compared with the prior art, the utility model has the beneficial effects that:
the LED lamp ring and the TFT display are integrated, and the integrated touch technology, the TFT and the LED are integrally displayed, so that the LED lamp ring integrated display device has the characteristics of outstanding effect, optimized cost, simplified electricity and increased circuit operation reliability compared with the existing product.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the utility model, for which like reference numerals are used to indicate like parts. Wherein:
FIG. 1 is a schematic diagram of a schematic structure of a DCIN/UART CON input circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a backlight adjusting circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a schematic structure of a control processing circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a TOUCH button circuit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a serial data conversion circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a schematic structure of a TFT display driving control circuit according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a schematic circuit of an LED light ring display driving circuit according to an embodiment of the present invention.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
As shown in fig. 1 to 8, as an embodiment of the present invention, the present invention provides a technical solution: a touch key, TFT, LED comprehensive display dimming drive multiplexing circuit, including DCIN/UART CON input circuit, power supply circuit, backlight adjusting circuit, UART1 serial port communication circuit, control processing circuit and display drive circuit, it can be understood that the utility model integrates LED lamp ring and TFT display optimization scheme and integrated touch technology with TFT, LED comprehensive display integrated mode, thereby having the advantages of outstanding effect, optimized cost, simplified power and increased circuit operation reliability, wherein,
the DCIN/UART CON input circuit inputs a 5V working voltage through the interface CON1 to provide a working voltage for the dimming driving multiplexing circuit, it should be noted that the zener diode D1 shown in fig. 1 can use a cutoff protection with a voltage higher than 6V;
the power supply circuit receives the operating voltage through the input interface VINI, and outputs the operating voltage through the interfaces SW1, SW2, and SW3, respectively, to form a power supply circuit for controlling the processing circuit, which can be understood as follows: the partial 5V voltage entering the power supply circuit passes through a 1V1/1V8/3V3 circuit and is input through VIN1, EN1 is enabled, the signal feedback of FB1 is output from an interface SW1, the partial 5V voltage passes through an L1 inductor, an L4 inductor and a capacitor filter of C76, C71 and C12 to output 3.3V voltage, and similarly, the partial 5V voltage entering the power supply circuit outputs 1.8V voltage through the interface SW2 and outputs 1.1V and other three power supply outputs to a control processing circuit, a TFT display drive control circuit and other related circuits for power supply through an interface SW 1;
the backlight adjusting circuit receives the 5V working voltage, and upgrades and outputs the TFT backlight boosting voltage through the back light Driver circuit, and controls the backlight current according to the input duty ratio of the backlight signal, so as to realize the control of the backlight brightness, and it can be understood that, during the specific work: the voltage of part 5V entering the power supply circuit is upgraded and output to 12V through a chip U6, an L2 inductor and a D3 diode of a back light Driver circuit, and the control of the current of the TFT backlight is realized through the input duty ratio of a BL-PWM backlight signal, so that the control of the brightness of the TFT backlight is realized;
the UART1 serial port communication circuit is connected TO an external client control motherboard through mos tube output, and performs UART communication TO receive instructions of the external client control motherboard, it can be understood that the UART1 serial port communication circuit performs UART communication with the client motherboard through a UART 19261 TO COB circuit Q4mos and a Q3 mos, it is TO be noted that the UART1 serial port communication circuit includes a signal isolation circuit, which has an isolation function and is used TO ensure that a module product is not interfered by external communication when the UART1 serial port communication circuit communicates with the client control motherboard;
the control processing circuit is respectively connected with the DCIN/UART CON input circuit, the power supply circuit and the backlight adjusting circuit, receives an instruction of an external client control mainboard through the UART1 serial port communication circuit, and outputs UART communication into LED lamp ring display information and TFT display information, wherein the UART communication information is divided into the LED lamp ring display information and the TFT display information after being processed by the MCU chip U7 of the control processing circuit,
the LED lamp ring display information drives the LED _ BULE and the interfaces COM1-COM8 of the LED _ RED circuit part in a time-sharing mode, when the interface COM1 is at a low level, the rest interfaces COM 2-COM 8 are at a high level, and the rest interfaces COM 2-COM 8 are driven in the same way, and simultaneously supply power to the LED BS1-LED RS 9;
in the LED BULE driving circuit and the LED RED driving circuit, when an interface COM1 is at a low level and power is supplied, an LED BS1-LED RS9 sets a duty ratio of a PWM waveform at an IO port of an LED BS1-LED RS9 through a software internal register A1-A9, it needs to be noted that when the duty ratio of the LED BS is set to be 0, the brightness of the current G1-BULE LED is the lowest, when the duty ratio is 100, the brightness of the current G1-BULE LED is the highest, and so on, the dimmable driving of 72 LED lamp rings such as G1-G36, F1-F36 and the like is realized;
the TFT display is converted into RGB information by a serial data conversion circuit (namely a UART09261 TO ITE circuit) Q4mos tube and Q3 mos tube and a TFT display drive control circuit (namely an IT9866 circuit) through the TFT display drive control circuit processing related TFT display content information, and finally the TFT display related content is driven by an RGB I/F circuit;
the display driving circuit receives LED lamp ring display information and TFT display information and is used for carrying out LED lamp ring brightness dimming and TFT display, based on the conception, the display driving circuit comprises an LED lamp ring display driving circuit and a TFT display driving circuit, the LED lamp ring display driving circuit comprises an LED BULE driving circuit and an LED RED driving circuit connected with the LED BULE driving circuit, and the LED BULE driving circuit and the LED RED driving circuit are driven from a low level to a high level through a serial interface COM to realize dimming driving of the LED lamp ring from the lowest brightness to the highest brightness;
in a possible implementation manner of the dimming driving multiplexing circuit provided by the present invention, the dimming driving multiplexing circuit further includes a TOUCH button circuit, wherein the TOUCH button circuit is connected to the control processing circuit, and the output interface of the TOUCH button circuit at least includes a TOUCH button interface and at least one TOUCH slide bar level output interface, it can be understood that, in the TOUCH button circuit, the interface TOUCH1 is a single TOUCH button, the interface TOUCH 2-interface TOUCH5 is a TOUCH slide bar, and the slide bar level is set to 100 levels, for example:
when the control processing circuit detects that a single key of the interface TOUCH1 has TOUCH information, the key is triggered, otherwise, the key is not triggered;
when the TOUCH of the interface TOUCH2 is detected and the TOUCH intensity is 100%, outputting a slider value of 0;
when the TOUCH intensity of the interface TOUCH2 is detected to be 50%, and the TOUCH intensity of the interface TOUCH3 is detected to be 50%, the output slider value is 16.5;
when detecting that the TOUCH intensity of the interface TOUCH3 is 100%, outputting a slider value of 33%; by analogy in the following way,
when detecting that the TOUCH intensity of the interface TOUCH5 is 100%, outputting a slider value of 100%.
It should be noted that the dimming driving multiplexing circuit further includes a serial data conversion circuit and a TFT display driving control circuit, wherein the control processing circuit is connected to the TFT display driving control circuit through a mos transistor of the serial data conversion circuit, and is configured to transmit TFT display information, and in specific implementation, the control processing circuit uses an 8-bit 51-standby low-power chip, which is of the type: SH79F 9261; the TFT display drive control circuit adopts a 32-bit arm9 kernel embedded system chip, and the type is as follows: ITE 9866.
In an embodiment of the utility model, the UART1 serial port communication circuit is based on an embedded operating system.
As a second aspect of the utility model, a display formed based on the above technical concept is provided, which comprises a touch key and a dimming driving multiplexing circuit for TFT and LED integrated display.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (9)
1. The utility model provides a touch key and TFT, LED synthesize light drive multiplexing circuit that shows which characterized in that: comprises a DCIN/UART CON input circuit, a power supply circuit, a backlight adjusting circuit, a UART1 serial port communication circuit, a control processing circuit and a display driving circuit, wherein,
the DCIN/UART CON input circuit inputs working voltage through an interface CON1 and is used for providing working voltage for the dimming driving multiplexing circuit;
the power supply circuit receives the working voltage through an input interface VINI, outputs the working voltage through interfaces SW1, SW2 and SW3 respectively, and is used for forming the power supply circuit of the control processing circuit;
the backlight adjusting circuit receives the working voltage, upgrades and outputs TFT backlight boosting voltage through the backlight driver circuit, and controls the backlight current according to the input duty ratio of a backlight signal to realize the control of the backlight brightness;
the UART1 serial port communication circuit is connected with an external client control mainboard through mos tube output and carries out UART communication to receive the instruction of the external client control mainboard;
the control processing circuit is respectively connected with the DCIN/UART CON input circuit, the power supply circuit and the backlight adjusting circuit, receives the instruction of the external client control mainboard through the UART1 serial port communication circuit, and outputs the UART communication to LED lamp ring display information and TFT display information;
and the display driving circuit receives the LED lamp ring display information and the TFT display information and is used for carrying out LED lamp ring brightness dimming and TFT display.
2. The light-variable driving multiplexing circuit for touch key and integrated display of TFT and LED of claim 1, wherein: the TOUCH control device further comprises a TOUCH control key circuit, wherein the TOUCH control key circuit is connected with the control processing circuit, and the output interface of the TOUCH control key circuit at least comprises a TOUCH control key interface and at least one TOUCH control slide bar grade output interface.
3. The light-variable driving multiplexing circuit for touch key and integrated display of TFT and LED of claim 1, wherein: the display device also comprises a serial data conversion circuit and a TFT display drive control circuit, wherein the control processing circuit is connected with the TFT display drive control circuit through a mos tube of the serial data conversion circuit and is used for transmitting TFT display information.
4. The light-variable driving multiplexing circuit for touch key and integrated display of TFT and LED of claim 1, wherein: the UART1 serial port communication circuit comprises a signal isolation circuit, which is used for blocking external communication interference when the UART1 serial port communication circuit communicates with a client control mainboard.
5. A dimming driving multiplexing circuit for touch control key and TFT, LED integrated display according to claim 1 or 3, wherein: the display drive circuit comprises an LED lamp ring display drive circuit and a TFT display drive circuit, wherein,
the LED lamp ring display driving circuit comprises an LED BULE driving circuit and an LED RED driving circuit connected with the LED BULE driving circuit, and the LED BULE driving circuit and the LED RED driving circuit are driven from a low level to a high level through a serial interface COM to realize dimming driving of the LED lamp ring from the lowest brightness to the highest brightness;
the TFT display driving circuit is communicated with the TFT display driving control circuit through a mos tube of the serial data conversion circuit, and the TFT display driving control circuit converts the TFT display information into RGB information and drives the TFT to display related information through an RGB I/F circuit.
6. The light-variable driving multiplexing circuit for touch key and integrated display of TFT and LED of claim 1, wherein: the UART1 serial port communication circuit is based on an embedded operating system.
7. The light-variable driving multiplexing circuit for touch key and integrated display of TFT and LED of claim 1, wherein: the control processing circuit adopts an 8-bit 51 standby low-power chip, and the type number of the chip is as follows: SH79F 9261.
8. The light-variable driving multiplexing circuit for touch key and TFT, LED integrated display of claim 3, wherein: the TFT display drive control circuit adopts a 32-bit arm9 kernel embedded system chip, and the type number is as follows: ITE 9866.
9. A display, characterized by: the dimming driving multiplexing circuit comprises the touch key as claimed in any one of claims 1 to 8 and a TFT and LED integrated display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121782852.2U CN215933162U (en) | 2021-08-02 | 2021-08-02 | Touch key, TFT and LED integrated display dimming drive multiplexing circuit and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121782852.2U CN215933162U (en) | 2021-08-02 | 2021-08-02 | Touch key, TFT and LED integrated display dimming drive multiplexing circuit and display |
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| CN215933162U true CN215933162U (en) | 2022-03-01 |
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| CN202121782852.2U Active CN215933162U (en) | 2021-08-02 | 2021-08-02 | Touch key, TFT and LED integrated display dimming drive multiplexing circuit and display |
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