An ultra-thin rice cooker display panel

Abstract

This utility model discloses an ultra-thin display panel for a rice cooker, relating to the field of electronic control system technology. It includes a data acquisition module and a display driver module, which are electrically connected via an MCU main control module. The MCU main control module is also electrically connected to a power-off memory module and a color light module. Through the compact layout of the common-anode LED circuit and digital tube, combined with the 23-way button input of the FPC flexible touchpad, the overall thickness is significantly reduced, conforming to the trend of modern thinner and lighter home appliances. Furthermore, each LED group in the RGB light group retains only one light-emitting diode, with the rest being configured as ordinary diodes for shunt current, thus ensuring both brightness and heat control.

Description

Technical Field

[0001] This utility model relates to the field of electronic control system technology, specifically to an ultra-thin display panel for a rice cooker. Background Technology

[0002] With the improvement of people's living standards and the advancement of technology, home appliances are constantly developing towards intelligence, thinness, and user-friendliness. Traditional rice cookers can no longer meet the needs of modern families in terms of functionality and user experience. Especially in the design of the display control panel, traditional rice cookers often face problems such as bulky size, poor display effect, and high power consumption. These problems are mainly reflected in the following aspects:

[0003] Size and thickness: The display control panel of traditional rice cookers has an increased overall thickness due to the use of more independent components and complex wiring, which is not conducive to achieving a slim and lightweight design.

[0004] Display uniformity: Traditional display solutions often suffer from uneven brightness, which affects the user's visual experience.

[0005] Energy consumption and heat generation: To ensure sufficient brightness, multiple high-power light-emitting diodes (LEDs) are usually required, which not only increases energy consumption but may also cause local overheating.

[0006] User interaction experience: Traditional button input methods are not intuitive and convenient enough, and lack a modern touch operation experience. Utility Model Content

[0007] The purpose of this utility model is to provide an ultra-thin display panel for rice cookers to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an ultra-thin rice cooker display panel, comprising a data acquisition module and a display driver module, wherein the data acquisition module and the display driver module are electrically connected through an MCU main control module, and the MCU main control module is electrically connected to a power-off memory module and a color light module;

[0009] The display driver module includes a constant current driving unit and a dynamic scanning unit. Both the constant current driving unit and the dynamic scanning unit are electrically connected to the MCU main control module through a current limiting protection unit. At the same time, both the constant current driving unit and the dynamic scanning unit are electrically connected to a common anode LED circuit and a digital tube.

[0010] Furthermore, it also includes a communication module, which is electrically connected to the MCU main control module through the TXD port and the RXD port.

[0011] Furthermore, the current limiting protection unit includes resistors, and both the constant current driving unit and the dynamic scanning unit are electrically connected to the MCU main control module through multiple resistors, while each resistor is grounded through a capacitor.

[0012] Furthermore, the MCU main control module includes an MCU main controller, and the MCU main controller's M... — CLK port, M — SDI port, M — LE port, M — A0 port, M — A1 port, M — A2 port and M — The EN port is electrically connected to the current limiting protection unit, and the AD of the MCU main controller is... — The PR port is electrically connected to the power-down memory module, and the MCU main controller's Dv... — R port, Dv — G port and Dv — Port B is electrically connected to the color light module. Port 6 of the MCU main controller is electrically connected to port 7 of the MCU main controller through capacitor C202. At the same time, port 7 of the MCU main controller is electrically connected to port 12 of the MCU main controller through capacitors EC201 and C201. Capacitors EC201 and C201 are connected in parallel. The remaining ports of the MCU main controller are electrically connected to the data acquisition module.

[0013] Furthermore, the colored light module includes an RGB light group circuit and a transistor driving circuit. The RGB light group circuit includes three groups of LED lights electrically connected to the +5V power supply port, and each group of LED lights is electrically connected to the MCU main controller through the transistor driving circuit.

[0014] Furthermore, the three sets of LED light groups are arranged in a ring, and the angle between two adjacent sets of LED light groups is 120°. Each set of LED light groups includes three diodes, and each diode is electrically connected to a transistor driving circuit through a resistor. One of the three diodes is a light-emitting diode.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Firstly, this utility model significantly reduces the overall thickness through the compact layout of the common anode LED circuit and digital tube, combined with the 23-way button input of the FPC flexible touch panel, which conforms to the trend of modern home appliances becoming thinner and lighter. At the same time, each LED group in the RGB light group retains only one light-emitting diode, and the rest are set as ordinary diodes for current shunting, so as not only to ensure brightness, but also to control heat generation.

[0017] Secondly, this utility model uses the constant current driving unit and the dynamic scanning unit in combination to control the uniformity of the segment code current through chip U203, and cooperates with the time-division bit selection scanning of chip U202, thereby solving the problem of uneven brightness in traditional displays.

[0018] Thirdly, this utility model uses three sets of 120° ring-shaped LED light groups, along with a transistor driving circuit, to achieve 360° no-dead-angle display of color status indication, thereby enhancing the user experience. Attached Figure Description

[0019] Figure 1 This is a system block diagram of the ultra-thin rice cooker display panel of this utility model;

[0020] Figure 2 This is a circuit diagram of the CN202 data acquisition module chip of this utility model;

[0021] Figure 3 This is a circuit diagram of the CN203 data acquisition module chip of this utility model;

[0022] Figure 4 This is a circuit diagram of the constant current drive unit of this utility model;

[0023] Figure 5 This is a circuit diagram of the dynamic scanning unit of this utility model;

[0024] Figure 6 This is a circuit diagram of the current limiting protection unit of this utility model;

[0025] Figure 7 This is the circuit diagram of the digital tube of this utility model;

[0026] Figure 8 This is the circuit diagram of the common anode LED circuit of this utility model;

[0027] Figure 9 This is the circuit diagram of the MCU main control module of this utility model;

[0028] Figure 10 This is the circuit diagram of the power-off memory module of this utility model;

[0029] Figure 11 This is the circuit diagram of the RGB lamp assembly circuit of this utility model;

[0030] Figure 12 This is a circuit diagram of the transistor driving circuit of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] refer to Figure 1 This embodiment provides an ultra-thin rice cooker display panel, which includes a data acquisition module, a display driver module, an MCU main control module, a power-off memory module, a color light module, and a communication module. The data acquisition module, display driver module, power-off memory module, color light module, and communication module are all electrically connected to the MCU main control module. (Reference) Figure 9 In this embodiment, the MCU main control module includes an MCU main controller. (See reference...) Figure 9 The MCU main control module includes an MCU main controller, wherein the MCU main controller's M... — CLK port, M — SDI port, M — LE port, M — A0 port, M — A1 port, M — A2 port and M — The EN port is electrically connected to the current limiting protection unit, and the AD converter of the MCU main controller is... — The PR port is electrically connected to the power-down memory module, and the MCU main controller's Dv... — R port, Dv — G port and Dv — Port B is electrically connected to the color light module. Port 6 of the MCU main controller is electrically connected to port 7 of the MCU main controller through capacitor C202. At the same time, port 7 of the MCU main controller is electrically connected to port 12 of the MCU main controller through capacitors EC201 and C201. Capacitors EC201 and C201 are connected in parallel. The remaining ports of the MCU main controller are electrically connected to the data acquisition module.

[0033] In this embodiment, the data acquisition module uses an FPC flexible touchpad to input 23 channels of button signals. (See reference) Figure 2 and Figure 3 The data acquisition module includes chips CN202 and CN203. Ports 1-11 of chip CN202 are electrically connected to ports K211-K201 of the MCU main controller via resistors, and ports 1-12 of chip CN203 are electrically connected to ports K223-K212 of the MCU main controller via resistors.

[0034] In this embodiment, the display driving module includes a constant current driving unit and a dynamic scanning unit. Both the constant current driving unit and the dynamic scanning unit are electrically connected to the MCU main controller through a current limiting protection unit. Simultaneously, both the constant current driving unit and the dynamic scanning unit are electrically connected to a common anode LED circuit and a digital tube. (Reference) Figures 4-8 The constant current drive unit controls the segment current of the digital tube through chip U203, thereby ensuring the uniformity of its brightness. The dynamic scanning unit includes chip U202, which can time-division switching the bit selection signal of the common anode LED circuit. The current limiting protection unit includes resistors and capacitors. The resistors limit the input current of the constant current drive unit and the dynamic scanning unit, and the capacitors prevent reverse voltage from damaging the common anode LED circuit and the digital tube.

[0035] Furthermore, ports 1 and 24 of chip U202 are electrically connected via capacitors EC202 and C203, with EC202 and C203 connected in parallel. Simultaneously, port 2 of chip U202 is electrically connected to resistor R204 and capacitor C205; port 3 is electrically connected to resistor R205 and capacitor C206; port 4 is electrically connected to resistor R206 and capacitor C207; port 5 is electrically connected to port 11 of the digital tube and LEDs L211, L242, and L243; port 6 is electrically connected to port 10 of the digital tube and LEDs L201, L219, and L226; and port 7 is electrically connected to port 12 of the digital tube and LEDs L227, L234, and L2... 35. Connect the 8-port to the 9-port of the digital tube and LEDs L202, L210, and L218. Connect the 9-port to the 8-port of the digital tube and LEDs L203, L204, and L206. Connect the 10-port to LED L241. Connect the 11-port to LEDs L240 and L246. Connect the 12-port to LEDs L239 and L249. Connect the 13-port to LEDs L215, L216, and L217. Connect the 14-port to an LED. Connect LEDs L208, L223, and L224 to ports 15 and 16. Connect LEDs L225, L232, and L233 to ports 16 and 17. Connect LEDs L209, L237, and L238 to ports 17 and 18. Connect LEDs L214, L221, and L222 to ports 6 and 19. Connect LEDs L205, L212, and L228 to ports 2 and 20. The 3-port of the digital tube is connected to the LEDs L213, L220 and L236. The 21-port is electrically connected to the M-OE port of the MCU main controller through resistor R202. The 23-port is grounded through resistor R201. At the same time, resistor R204 is electrically connected to the M-SDI port of the MCU main controller, resistor R205 is electrically connected to the M-CLK port of the MCU main controller, and resistor R206 is electrically connected to the M-LE port of the MCU main controller. Capacitors C205, C206 and C207 are all grounded.

[0036] Furthermore, ports 1 and 9 of chip U203 are electrically connected to the +5V power supply port; port 2 is electrically connected to resistor R217 and capacitor C217; port 3 is electrically connected to port 5 of the digital tube; port 4 is electrically connected to port 7 of the digital tube; port 5 is electrically connected to port 4 of the digital tube; port 6 is electrically connected to port 1; port 7 is electrically connected to resistor R218 and capacitor C218; ports 8 and 10 are both grounded; and port 11 is electrically connected to LEDs L211, L227, L236, L228, L221, L202, L203, L219, L241, L240, L239, L209, L231, and L2... 25. Connect LEDs L243, L235, L220, L212, L222, L210, L204, L201, L249, L237, L229, L233, L223 and L215 to ports 12 and L215. Connect LEDs L242, L234, L213, L205, L214, L218, L206, L226, L246, L238, L230, L232, L224 and L216 to ports 13 and L216. Connect resistor R215 and capacitor C215 to ports 15 and 16. Connect resistor R216 and capacitor C216 to ports 16 and 16. Meanwhile, resistor R215 is electrically connected to the M-LE port of the MCU main controller, resistor R216 is electrically connected to the M-LE port of the MCU main controller, resistor R218 is electrically connected to the M-EN port of the MCU main controller, and capacitors C215, C216, C217 and C218 are all grounded.

[0037] In this embodiment, the power-down memory module provides brief power during power outages to ensure data integrity. (Reference) Figure 10 The power-down memory module includes a diode D201, a resistor R212 connected in parallel with the diode D201, and a circuit consisting of the diode D201 and the resistor R212 connected in parallel is electrically connected to a resistor R211 and a capacitor EC211. The resistor R211 and the capacitor EC211 are electrically connected through a capacitor C211. Both the capacitor EC211 and the capacitor C211 are grounded. The resistor R211 and the capacitor C211 are both electrically connected to the AD-PR port of the MCU main controller.

[0038] In this embodiment, the color light module is used to display different states by using different colors—red, green, and blue—according to the control commands from the MCU main controller. (Reference) Figure 11 and Figure 12The colored light module includes an RGB light group circuit and a transistor driver circuit. The RGB light group circuit includes three sets of LEDs electrically connected to the +5V power supply port. Each set of LEDs is electrically connected to the MCU main controller through the transistor driver circuit. The three sets of LEDs are arranged in a ring, with an angle of 120° between adjacent sets. Each set of LEDs includes three diodes, and each diode is electrically connected to the transistor driver circuit through a resistor. One of the three diodes is an LED (light-emitting diode).

[0039] Furthermore, the RGB lighting circuit includes LED groups L301, L302, and L303. Each of the LED groups L301, L302, and L303 includes diodes R and G, and a light-emitting diode B. Diode R is connected to the collector of transistor Q201 through a resistor, diode G is connected to the collector of transistor Q202 through a resistor, and light-emitting diode B is connected to the collector of transistor Q203 through a resistor. The emitter of transistor Q201 is electrically connected to the base of transistor Q201 and resistor R314 through resistor R311. Both resistor R311 and the emitter of transistor Q201 are grounded, and resistor R314 is electrically connected to the Dv-R port of the MCU main controller. Meanwhile, the emitter of transistor Q202 is electrically connected to the base of transistor Q202 and resistor R315 through resistor R312. Both resistor R312 and the emitter of transistor Q202 are grounded. Resistor R315 is electrically connected to the Dv-G port of the MCU main controller. Similarly, the emitter of transistor Q203 is electrically connected to the base of transistor Q203 and resistor R316 through resistor R313. Both resistor R313 and the emitter of transistor Q203 are grounded. Resistor R316 is electrically connected to the Dv-B port of the MCU main controller.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. An ultra-thin display panel for a rice cooker, characterized in that, It includes a data acquisition module and a display driver module, which are electrically connected through an MCU main control module. The MCU main control module is also electrically connected to a power-off memory module and a color light module. The display driver module includes a constant current driving unit and a dynamic scanning unit. Both the constant current driving unit and the dynamic scanning unit are electrically connected to the MCU main control module through a current limiting protection unit. At the same time, both the constant current driving unit and the dynamic scanning unit are electrically connected to a common anode LED circuit and a digital tube.

2. The ultra-thin rice cooker display panel according to claim 1, characterized in that, It also includes a communication module, which is electrically connected to the MCU main control module through the TXD port and the RXD port.

3. The ultra-thin rice cooker display panel according to claim 1, characterized in that, The current limiting protection unit includes resistors. The constant current driving unit and the dynamic scanning unit are electrically connected to the MCU main control module through multiple resistors, and each resistor is grounded through a capacitor.

4. A display panel for an ultra-thin rice cooker according to claim 1 or 3, characterized in that, The MCU main control module includes an MCU main controller, and the MCU main controller has an M... — CLK port, M — SDI port, M — LE port, M — A0 port, M — A1 port, M — A2 port and M — The EN port is electrically connected to the current limiting protection unit, and the AD of the MCU main controller is... — The PR port is electrically connected to the power-down memory module, and the MCU main controller's Dv... — R port, Dv — G port and Dv — Port B is electrically connected to the color light module. Port 6 of the MCU main controller is electrically connected to port 7 of the MCU main controller through capacitor C202. At the same time, port 7 of the MCU main controller is electrically connected to port 12 of the MCU main controller through capacitors EC201 and C201. Capacitors EC201 and C201 are connected in parallel. The remaining ports of the MCU main controller are electrically connected to the data acquisition module.

5. The ultra-thin rice cooker display panel according to claim 4, characterized in that, The colored light module includes an RGB light group circuit and a transistor driving circuit. The RGB light group circuit includes three groups of LED lights electrically connected to the +5V power supply port. At the same time, each group of LED lights is electrically connected to the MCU main controller through the transistor driving circuit.

6. The ultra-thin rice cooker display panel according to claim 5, characterized in that, The three sets of LED lights are arranged in a ring, with an angle of 120° between adjacent sets. Each set of LED lights includes three diodes, each of which is electrically connected to a transistor driving circuit through a resistor. One of the three diodes is a light-emitting diode.

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