Display control circuit and electronic atomization device

Abstract

The application discloses a display control circuit and an electronic atomization device. The display control circuit comprises a display module, a driving circuit and a controller. The display module comprises a first display unit and a second display unit. The driving circuit is electrically connected with the second display unit. The controller is electrically connected with the first display unit and the driving circuit respectively. The controller is configured to output a control signal to drive the first display unit to display correspondingly, and control the driving circuit to be turned on or turned off, so that the second display unit is lit or extinguished together. In this way, the number of LED lamps can be increased while the brightness of each LED lamp remains unchanged.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and in particular to a display control circuit and an electronic atomizing device. Background Technology

[0002] Electronic atomizing devices are used to heat an aerosol-forming matrix to generate an inhalable aerosol. The aerosol-forming matrix can be a liquid matrix, such as e-liquid, or a solid matrix, such as an aerosol-generating product, i.e., a cigarette.

[0003] Currently, with the increasing functionality of electronic atomizing devices, the display components of these devices have become more complex, requiring more LEDs. These LEDs are driven by a driver unit, which has a fixed number of LEDs. When this number is exceeded, additional LEDs need to be connected in parallel with some of the existing LEDs. However, parallel connection causes current shunting, resulting in a significant decrease in brightness for both the newly added LEDs and those connected in parallel. Utility Model Content

[0004] This application provides a display control circuit and an electronic atomizing device that can maintain the brightness of each LED while increasing the number of LEDs.

[0005] In a first aspect, embodiments of this application provide a display control circuit, including: a display module, including a first display unit and a second display unit; a driving circuit electrically connected to the second display unit; and a controller electrically connected to the first display unit and the driving circuit, wherein the controller is configured to output a control signal to drive the first display unit to perform a corresponding display, and to control the driving circuit to be turned on or off, thereby driving the second display unit to be lit or turned off together.

[0006] In one or more embodiments, the display module includes an LED display screen, which includes N first driving pins, second driving pins, first selection pins, second selection pins, and a ground pin, where N is a positive integer; a first display unit and a second display unit are disposed within the LED display screen, the N first driving pins are electrically connected to the first display unit, the second driving pins are electrically connected to the second display unit, the first selection pins are used to select driving the first display unit, the second selection pins are used to select driving the second display unit, and the ground pin is grounded.

[0007] In one or more embodiments, the first display unit includes an LED dot matrix arranged in a rectangular pattern of N rows * M columns, with each row of LEDs electrically connected to a first driving pin, where M is a positive integer.

[0008] In one or more embodiments, the anodes of the first NK LEDs in the Kth column are electrically connected and the cathodes of the (N-K+1)th row LEDs are electrically connected, where K is less than or equal to M-1; the anodes of the last K LEDs in the Kth column are electrically connected and the anodes of the first N-(K+1) LEDs in the (K+1)th column LEDs are electrically connected; and the anodes of the last M LEDs in the Mth column are electrically connected and the cathodes of the first row LEDs are electrically connected.

[0009] In one or more embodiments, the second display unit includes an LED parallel circuit, which includes one or more LEDs connected in parallel. The anode of the LED in the LED parallel circuit is electrically connected to the second drive pin, and the cathode of the LED in the LED parallel circuit is grounded.

[0010] In one or more embodiments, the data of the LEDs in the LED display screen is greater than or equal to 50.

[0011] In one or more embodiments, the controller includes a drive unit, which includes N third drive pins, each of which is electrically connected to a first drive pin; the controller also includes an enable pin, a third select pin, and a fourth select pin, wherein the enable pin is electrically connected to a drive circuit, the drive circuit is electrically connected to a second drive pin, the third select pin is electrically connected to the first select pin, and the fourth select pin is electrically connected to the second select pin.

[0012] In one or more embodiments, the driving circuit includes a first switching transistor and a first resistor; the control terminal of the first switching transistor is electrically connected to the first terminal of the first resistor and the controller, the first terminal of the first switching transistor is electrically connected to the battery cell and the second terminal of the first resistor, and the second terminal of the first switching transistor is electrically connected to the second display unit.

[0013] In one or more embodiments, the first switch is a PMOS transistor; the control terminal of the first switch is the gate of the PMOS transistor, the first terminal of the first switch is the source of the PMOS transistor, and the second terminal of the first switch is the drain of the PMOS transistor.

[0014] Secondly, embodiments of this application provide an electronic atomizing device, including a battery cell and a display control circuit as described in the first aspect; the battery cell is electrically connected to the display control circuit to supply power to the display control circuit.

[0015] The beneficial effects of this application are as follows: The display control circuit of this application embodiment includes a display module, a driving circuit, and a controller. The display module includes a first display unit and a second display unit, wherein the first display unit is directly driven by a control signal output by the controller, and the second display unit is driven by the controller through the driving circuit. When the required number of LEDs exceeds the number of LEDs in the first display unit, LEDs can be added to the second display unit to meet the required number of LEDs. Since the total current driving the second display unit through the driving circuit is large, even if the number of LEDs increases, the current flowing through each LED will not decrease, thereby ensuring that the brightness of each LED remains unchanged. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are not intended to limit the embodiments, and elements having the same reference numerals in the drawings are designated as similar elements.

[0017] Figure 1 This is a schematic diagram of the display control circuit provided in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the display control circuit provided in the embodiments of this application. Figure 2 ; Figure 3 This is a schematic diagram of the display control circuit provided in the embodiments of this application. Figure 3 ; Figure 4 This is a schematic diagram of the first display unit provided in an embodiment of this application; Figure 5 This is a schematic diagram of the second display unit provided in an embodiment of this application; Figure 6 This is a schematic diagram of the circuit structure of the driving circuit provided in the embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and thoroughly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] It should be noted that when an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements between them.

[0020] Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0021] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the block diagram of the display control circuit provided in an embodiment of this application. Figure 1 As shown, the display control circuit 100 includes a display module 10, a drive circuit 20, and a controller 30.

[0022] The display module 10 includes a first display unit 11 and a second display unit 12. Both the first display unit 11 and the second display unit 12 include at least one LED.

[0023] The driving circuit 20 is electrically connected to the second display unit 12. The controller 30 is electrically connected to both the first display unit 11 and the driving circuit 20. The controller 30 is configured to output a control signal to drive the first display unit 11 to perform corresponding displays, that is, the controller 30 outputs a control signal to drive the LEDs in the first display unit 11 to light up or turn off. The controller 30 is also configured to control the driving circuit 20 to turn on or off, thereby driving the LEDs in the second display unit 12 to light up or turn off together. In a specific embodiment, the controller 30 controls the driving signal 20 to turn on, so as to drive the LEDs in the second display unit 12 to light up together; the controller 30 controls the driving signal 20 to turn off, so as to drive the LEDs in the second display unit 12 to turn off together.

[0024] Understandably, in the case of LEDs being directly driven by the controller 30 (corresponding to the method of driving LEDs using a driver unit in related technologies), the number of LEDs driven by the controller 30 is fixed. When this number is exceeded, the newly added LEDs need to be connected in parallel with some of the existing LEDs. However, since parallel connection causes current diversion, the brightness of both the newly added LEDs and those connected in parallel will be significantly reduced. It can also be understood that the current output of the controller 30 is limited. When the number of LEDs increases to the point that the total current demand exceeds the output capacity of the controller 30, at least some of the LEDs will receive less current, thus reducing their brightness.

[0025] Based on this, this application further includes a second display unit 12 driven by a driving circuit 20. When the required number of LEDs exceeds the number of LEDs in the first display unit 11, more LEDs can be added to the second display unit 12 to meet the required number. On the one hand, this ensures that the current provided by the controller 30 meets the needs of the first display unit 11, maintaining the brightness of each LED in the first display unit 11. On the other hand, since the total current driving the second display unit 12 through the driving circuit 20 is large, even if the number of LEDs increases, the current flowing through each LED will not decrease, thus ensuring that the brightness of the LEDs in the second display unit 12 remains constant. In summary, this achieves the goal of maintaining the brightness of each LED in the display module 10 while increasing the number of LEDs.

[0026] In some embodiments, such as Figure 2 As shown, the display module 10 includes an LED display screen 13. The LED display screen 13 includes N first driving pins, a second driving pin VLD, a first selection pin K11, a second selection pin K12, and a ground pin G1, where N is a positive integer. The N first driving pins include the first first driving pin LD11, the second first driving pin LD12, ..., the Nth first driving pin LD1N.

[0027] The first display unit 11 and the second display unit 12 are disposed within the LED display screen 13. N first drive pins are electrically connected to the first display unit 11, i.e., the first first drive pin LD11, the second first drive pin LD12, ..., the Nth first drive pin LD1N are all electrically connected to the first display unit 11. The second drive pin VLD is electrically connected to the second display unit 12. A first selection pin K11 is used to select which display unit 11 to drive. For example, in one specific embodiment, when the level of the first selection pin K11 is high, it is determined that the first display unit 11 can be driven, and the controller 30 outputs a control signal to drive the LEDs in the first display unit 11 to light up or turn off; when the level of the first selection pin K11 is low, it is determined that the first display unit 11 is not driven, and the LEDs in the first display unit 11 remain off. The second selection pin K12 is used to select the driver for the second display unit 12. For example, in one specific embodiment, when the level of the second selection pin K12 is high, it is determined that the second display unit 12 can be driven, and the controller 30 controls the drive circuit 20 to drive the LEDs in the second display unit 12 to light up or turn off together; when the level of the second selection pin K12 is low, it is determined that the second display unit 12 is not driven, and the LEDs in the second display unit 12 remain off. The ground pin G1 is grounded to GND.

[0028] In some embodiments, the number of LEDs in the LED display screen 13 is greater than or equal to 50, indicating a relatively large number of LEDs. In this case, by combining the first display unit 11 directly driven by the controller 30 and the second display unit 12 driven by the drive circuit 20, on the one hand, the current provided by the controller 30 can meet the needs of the first display unit 11, thus maintaining the brightness of each LED in the first display unit 11 unchanged; on the other hand, even if the number of LEDs is large, the current flowing through each LED in the second display unit 12 will not decrease, thereby ensuring that the brightness of the LEDs in the second display unit 12 remains unchanged.

[0029] Please continue to refer to Figure 2 In some embodiments, the controller 30 includes N third drive pins, each of which is electrically connected to a first drive pin. The N third drive pins include a first third drive pin LD21, a second third drive pin LD22, ..., an Nth third drive pin LD2N. The first third drive pin LD21 is electrically connected to the first first drive pin LD11, the second third drive pin LD22 is electrically connected to the second first drive pin LD12, ..., and the Nth third drive pin LD2N is electrically connected to the Nth first drive pin LD1N.

[0030] The controller 30 also includes an enable pin LD_EN, a third selection pin K21, and a fourth selection pin K22. The enable pin LD_EN is electrically connected to the drive circuit 20, which is electrically connected to the second drive pin VLD. The controller 30 outputs a signal to the drive circuit 20 via the enable pin LD_EN to control the drive circuit 20 to turn on or off, thereby driving the LEDs in the second display unit 12 to light up or turn off. The third selection pin K21 is electrically connected to the first selection pin K11. The controller 30 outputs a signal to the first selection pin K11 via the third selection pin K21 to select whether to drive the first display unit 11. The fourth selection pin K22 is electrically connected to the second selection pin K12. The controller 30 outputs a signal to the second selection pin K12 via the fourth selection pin K22 to select whether to drive the second display unit 12.

[0031] In some embodiments, such as Figure 3 As shown, the controller 30 includes a drive unit 31. The first third drive pin LD21, the second third drive pin LD22, ..., the Nth third drive pin LD2N are pins of the drive unit 31. The drive unit 31 is used to output current and voltage suitable for the operation of the LED lamp, ensuring that the LED lamp can emit light normally.

[0032] In some embodiments, the first display unit 11 includes an LED dot matrix arranged in a rectangular pattern of N rows * M columns. Each row of LEDs is electrically connected to a first driving pin, where M is a positive integer. The anodes of the first NK LEDs in the Kth column are electrically connected to the cathodes of the (N-K+1)th row of LEDs, where K is less than or equal to M-1. The anodes of the last K LEDs in the Kth column are electrically connected to the anodes of the first N-(K+1) LEDs in the (K+1)th column. The anodes of the last M LEDs in the Mth column are electrically connected to the cathodes of the first row of LEDs.

[0033] by Figure 4 The LED light matrix shown in the image will be used as an example for explanation. Figure 4 As shown, the LED dot matrix includes 72 KED LEDs, designated LEDs D1 to D72, arranged in a rectangular pattern of 9 rows * 8 columns (N=9, M=8). The first row of LEDs is electrically connected to the first driver pin LD11; the second row is connected to the second driver pin LD12; ..., the ninth row is connected to the ninth driver pin LD19. The anodes of the first eight LEDs in the first column are electrically connected to the cathodes of the ninth row; the anodes of the first seven LEDs in the second column are electrically connected to the cathodes of the eighth row; ...; the anode of the first LED in the eighth column is electrically connected to the cathode of the second row. The anode of the last LED in the first row is electrically connected to the anode of the first seven LEDs in the second row; the anodes of the last two LEDs in the second row are connected to the anodes of the first six LEDs in the third row; ...; the anodes of the last seven LEDs in the seventh row are connected to the anode of the first LED in the eighth row. The anodes of the last eight LEDs in the eighth row are connected to the cathodes of the first row of LEDs.

[0034] In this embodiment, the signals on the first first driving pin LD11, the second first driving pin LD12, ..., the Nth first driving pin LD1N can be high-level signals or low-level signals, thereby driving each LED to light up or turn off. For example, if the first third driving pin LD21 of the controller 30 outputs a low-level signal, and the other third driving pins all output high-level signals, then the first first driving pin LD11 is a low-level signal, and the other first driving pins are high-level signals. As a result, the first row of LEDs (including LEDs D1 to D8) is lit, and the other LEDs are turned off.

[0035] In some embodiments, the second display unit 12 includes an LED parallel circuit, which includes one or more LEDs connected in parallel. The anode of one LED in the parallel circuit is electrically connected to a second drive pin, and the cathode of the LED in the parallel circuit is grounded.

[0036] Figure 5 An exemplary structure of the second display unit 12 is shown. For example... Figure 5 As shown, the parallel LED circuit includes LEDs DA1, DA2, ..., DAT, where T is a positive integer. When T equals 1, the anode of LED DA1 is electrically connected to the second driver pin VLD, and the cathode of LED DA1 is grounded to GND. When T is greater than 1, the anodes of LEDs DA1, DA2, ..., DAT are electrically connected and then connected to the second driver pin VLD, while the cathodes of LEDs DA1, DA2, ..., DAT are electrically connected and then grounded to GND. Therefore, when the second driver pin VLD is high, LEDs DA1, DA2, ..., DAT are simultaneously lit; when the second driver pin VLD is low, LEDs DA1, DA2, ..., DAT are simultaneously turned off.

[0037] Please refer to Figure 6 , Figure 6 An exemplary circuit structure for the drive circuit 20 is shown. For example... Figure 6 As shown, the driving circuit 20 includes a first switching transistor Q1 and a first resistor R1.

[0038] The control terminal of the first switch Q1 is electrically connected to the first terminal of the first resistor R1 and the enable pin LD_EN of the controller 30. The first terminal of the first switch Q1 is electrically connected to the second terminal of the battery cell 200 and the first resistor R1. The second terminal of the first switch Q1 is electrically connected to the second display unit 12 through the second drive pin VLD.

[0039] Specifically, when the enable pin LD_EN of the controller 30 outputs a high-level signal, the first switch Q1 is turned off, the electrical connection between the battery cell 200 and the second display unit 12 is broken, and the level corresponding to the second drive pin VLD is low, so all the LEDs in the second display unit 12 are off. When the enable pin LD_EN of the controller 30 outputs a low-level signal, the first switch Q1 is turned on, the electrical connection between the battery cell 200 and the second display unit 12 is established, the level corresponding to the second drive pin VLD is high, and all the LEDs in the second display unit 12 are lit.

[0040] In this embodiment, the first switch Q1 is a PMOS transistor. The control terminal of the first switch Q1 is the gate of the PMOS transistor, the first terminal of the first switch Q1 is the source of the PMOS transistor, and the second terminal of the first switch Q1 is the drain of the PMOS transistor.

[0041] In addition, the first switch Q1 can be any controllable switch, such as an insulated gate bipolar transistor (IGBT) device, an integrated gate commutated thyristor (IGCT) device, a gate turn-off thyristor (GTO) device, a silicon controlled rectifier (SCR) device, a junction gate field-effect transistor (JFET) device, a MOS controlled thyristor (MCT) device, etc.

[0042] This application also provides an electronic atomizing device, which includes a battery cell and a display control circuit 100 as described in any embodiment of this application. The battery cell is electrically connected to the display control circuit 100 to supply power to the display control circuit 100.

[0043] An electronic atomizing device refers to any device that generates an aerosol from an aerosol-forming matrix during use. In particular, a device is known that heats the aerosol-forming matrix to form an inhalable aerosol without burning or igniting the aerosol-generating article. Such devices are sometimes described as “heat-not-burn” devices, “tobacco heating products,” “tobacco heating devices,” or the like.

[0044] Similarly, there are so-called electronic cigarette devices that typically vaporize an aerosol-forming matrix in liquid form, which may or may not contain nicotine. In other embodiments, electronic atomizing devices provide aerosols or vapors by heating an aerosol-forming matrix in solid form. In a particular embodiment, the electronic atomizing device is a tobacco heating product.

[0045] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

[0046] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display control circuit, characterized in that, include: The display module includes a first display unit and a second display unit; The driving circuit is electrically connected to the second display unit; The controller is electrically connected to the first display unit and the driving circuit, respectively. The controller is configured to output control signals to drive the first display unit to perform corresponding displays, and to control the driving circuit to turn on or off, thereby driving the second display unit to light up or turn off together.

2. The display control circuit according to claim 1, characterized in that, The display module includes an LED display screen, which includes N first driving pins, second driving pins, first selection pins, second selection pins, and ground pins, where N is a positive integer; The first display unit and the second display unit are disposed within the LED display screen. N first driving pins are electrically connected to the first display unit, and the second driving pins are electrically connected to the second display unit. The first selection pin is used to select the driving of the first display unit, and the second selection pin is used to select the driving of the second display unit. The grounding pin is grounded.

3. The display control circuit according to claim 2, characterized in that, The first display unit includes an LED dot matrix, which is arranged in a rectangular pattern of N rows * M columns. Each row of LEDs is electrically connected to a first driving pin, where M is a positive integer.

4. The display control circuit according to claim 3, characterized in that, The anodes of the first NK LEDs in the Kth column are electrically connected, and the cathodes of the LEDs in the (N-K+1)th row are electrically connected, where K is less than or equal to M-1; The anodes of the last K LEDs in the Kth column are electrically connected, and the anodes of the first N-(K+1) LEDs in the K+1th column are electrically connected. The anodes of the last M LEDs in the Mth column are electrically connected, and the cathodes of the first row of LEDs are electrically connected.

5. The display control circuit according to claim 2, characterized in that, The second display unit includes an LED parallel circuit, which includes one or more LEDs connected in parallel. The anode of the LED in the LED parallel circuit is electrically connected to the second drive pin, and the cathode of the LED in the LED parallel circuit is grounded.

6. The display control circuit according to claim 2, characterized in that, The data of the LED lights in the LED display screen is greater than or equal to 50.

7. The display control circuit according to claim 2, characterized in that, The controller includes a drive unit, which includes N third drive pins, each of which is electrically connected to a first drive pin. The controller further includes an enable pin, a third select pin, and a fourth select pin. The enable pin is electrically connected to the drive circuit, the drive circuit is electrically connected to the second drive pin, the third select pin is electrically connected to the first select pin, and the fourth select pin is electrically connected to the second select pin.

8. The display control circuit according to any one of claims 1-7, characterized in that, The driving circuit includes a first switching transistor and a first resistor; The control terminal of the first switching transistor is electrically connected to the first terminal of the first resistor and the controller, the first terminal of the first switching transistor is electrically connected to the battery cell and the second terminal of the first resistor, and the second terminal of the first switching transistor is electrically connected to the second display unit.

9. The display control circuit according to claim 8, characterized in that, The first switching transistor is a PMOS transistor; The control terminal of the first switch is the gate of the PMOS transistor, the first terminal of the first switch is the source of the PMOS transistor, and the second terminal of the first switch is the drain of the PMOS transistor.

10. An electronic atomizing device, characterized in that, Includes battery cells and a display control circuit as described in any one of claims 1-9; The battery cell is electrically connected to the display control circuit to supply power to the display control circuit.

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