Display circuit

Abstract

The utility model provides a display circuit which comprises a master control module, a driving module, a backlight module and a display module, the master control module is respectively connected with the driving module and the backlight module, the driving module is connected with the display module, and the driving module comprises an ST7920 chip, an AIP31065 chip and an AIP31063 chip. Graphic Chinese character display of a dot matrix can be realized, and the anti-static interference capability is high; besides, the circuit matching of the ST7920 (or the compatible chip AIP31020 / UCI7920) and the domestic chip AIP31065 + AIP31063 is adopted, the problem that the scheme that the domestic chip replaces an imported chip meets the requirement that the import cannot be supplied is solved, and the cost can be saved.

Description

Technical Field

[0001] The present application relates to the technical field of display circuits, and in particular to a display circuit. Background Art

[0002] The LED display module is composed of LED light emitting diodes, drive circuits, drive ICs and plastic kits.

[0003] The principle of liquid crystal display is that the backlight component emits uniform surface light, which is transmitted to our eyes through the liquid crystal screen. The function of the screen is to process this light by pixel to display the image.

[0004] The current LED display module configuration cost is high, and the anti-static interference performance of multiple imported chips combined together is poor, which affects the display effect. Therefore, it is necessary to redesign a display circuit. Summary of the invention

[0005] The present application provides a display circuit to solve the problems of high configuration cost and poor anti-static interference capability of existing display circuits, achieving low configuration cost, simple working principle, capable of realizing dot matrix graphic Chinese character display, and strong anti-static interference capability.

[0006] The present application provides a display circuit, characterized in that it includes a main control module, a driving module, a backlight module and a display module;

[0007] The main control module is connected to the driving module and the backlight module respectively through wires;

[0008] The driving module is connected to the display module via a wire.

[0009] Preferably, the driving module includes an ST7920 chip, an AIP31065 chip and an AIP31063 chip, the ST7920 chip is a SEG line driving module with 96 SEG lines; the AIP31065 chip has 40 SEG lines; and the AIP31063 chip has 80 SEG lines.

[0010] Preferably, an LED backlight power supply and a backlight circuit board are installed on the backlight module, and a plurality of optical sheets are fixedly installed on the surface of the backlight circuit board.

[0011] Preferably, the driving module is also provided with a compatible chip AIP31020 / UCI7920.

[0012] Preferably, the main control module adopts an MCU single chip microcomputer of model GD32F130C8T6.

[0013] Preferably, the display module adopts an LCD liquid crystal display screen.

[0014] Beneficial effects: The utility model has novel structural design, low configuration cost, simple working principle, can realize dot matrix graphic Chinese character display, and has strong anti-static interference ability; in addition, the utility model adopts ST7920 (or compatible chip AIP31020 / UCI7920) and domestic chip AIP31065+AIP31063 circuit combination to solve the problem of domestic chip replacing imported chip to meet the problem of import shortage, which can save costs.

[0015] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a block diagram of the working principle of the utility model;

[0018] Figure 2 This is a schematic diagram of the ST7920 chip of the utility model;

[0019] Figure 3 This is a schematic diagram of the AIP31065 chip of the utility model;

[0020] Figure 4 This is a schematic diagram of the AIP31063 chip of the utility model;

[0021] Description of reference numerals: main control module 1 , driving module 2 , backlight module 3 , display module 4 . DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0027] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit ​​connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] See also Figure 1-Figure 4 , the present application discloses a display circuit, including a main control module 1, a driving module 2, a backlight module 3 and a display module 4;

[0030] The main control module 1 is connected to the driving module 2 and the backlight module 3 through wires;

[0031] The driving module 2 is connected to the display module 4 via a wire, and the display module 4 is an LCD liquid crystal display screen.

[0032] In the utility model, the driving module 2 includes an ST7920 chip, an AIP31065 chip and an AIP31063 chip. The ST7920 chip is a SEG line driving module with 96 SEG lines; the AIP31065 chip has 40 SEG lines; the AIP31063 chip has 80 SEG lines. The driving module 2 is also provided with a compatible chip AIP31020 / UCI7920.

[0033] In the utility model, the backlight module 3 is equipped with an LED backlight power supply and a backlight circuit board, and a plurality of optical sheets are fixedly installed on the surface of the backlight circuit board. The backlight module can play a backlight role and improve the clarity of the graphic Chinese character display.

[0034] In the utility model, the main control module 1 adopts a MCU single chip microcomputer of model GD32F130C8T6. The MCU single chip microcomputer executes the program stored therein through the internal CPU to realize the control of external devices. It can read instructions from the memory, process the input signal, and control the output device according to the processing result. In addition, the MCU also has an internal Flash memory, which can store program code and data, so as to realize various control logics. Through its powerful processing power and flexible programming ability, the MCU enables various electronic devices to realize intelligence and automation.

[0035] ST7920 is set to be compatible with chip AIP31020 chip and UCI7920 chip, the driving module is set to be compatible with chip AIP31065 chip, UCI7065 chip and NT7065 chip + another driving module is set to be compatible with chip AIP31063 chip and ST7063 chip, which are respectively connected to each other to form liquid crystal modules with different dot matrix numbers and reduce costs.

[0036] Embodiment 1:

[0037] A 12864 dot matrix LCD module is composed of 1 ST7920 (or compatible chip AIP31020 / UCI7920) + 3 AIP31065 chips (or compatible chip UCI7065 / NT7065) + 1 AIP31063 chip (or compatible chip ST7063) connected to each other.

[0038] Embodiment 2:

[0039] A 12864 dot matrix LCD module is composed of 1 ST7920 (or compatible chip AIP31020 / UCI7920) + 1 AIP31065 chip (or compatible chip UCI7065 / NT7065) + 2 AIP31063 chips (or compatible chip ST7063) connected to each other.

[0040] Embodiment three:

[0041] Use 1 ST7920 (or compatible chip AIP31020 / UCI7920) + 2 AIP31065 chips (or compatible chip UCI7065 / NT7065) to connect with each other to form a 12232 dot matrix LCD module, 12832 dot matrix LCD module, and 14432 dot matrix LCD module.

[0042] Embodiment 4:

[0043] Use 1 ST7920 (or compatible chip AIP31020 / UCI7920) + 1 AIP31063 chip (or compatible chip ST7063) to connect with each other to form a 12232 dot matrix LCD module, 12832 dot matrix LCD module, and 14432 dot matrix LCD module.

[0044] Embodiment five:

[0045] A 16032 dot matrix LCD module is composed of 1 ST7920 (or compatible chip AIP31020 / UCI7920) + 1 AIP31065 chip (or compatible chip UCI7065 / NT7065) + 1 AIP31063 chip (or compatible chip ST7063) connected to each other.

[0046] Embodiment six:

[0047] The 19264 dot matrix LCD module is composed of 2 ST7920 chips (or compatible chips AIP31020 / UCI7920) + 4 AIP31065 chips (or compatible chips UCI7065 / NT7065) + 2 AIP31063 chips (or compatible chips ST7063) connected to each other.

[0048] Embodiment seven:

[0049] The 19264 dot matrix LCD module is composed of 2 ST7920 chips (or compatible chips AIP31020 / UCI7920) + 8 AIP31065 chips (or compatible chips UCI7065 / NT7065) connected to each other.

[0050] To sum up, the utility model has novel structural design, low configuration cost, simple working principle, can realize dot matrix graphic Chinese character display, and has strong anti-static interference ability; in addition, the utility model adopts ST7920 (or compatible chip AIP31020 / UCI7920) and domestic chip AIP31065+AIP31063 circuit combination to solve the problem of domestic chip replacing imported chip to meet the problem of import shortage, which can save costs.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A display circuit, characterized in that: It comprises a main control module (1), a driving module (2), a backlight module (3) and a display module (4); The main control module (1) is respectively connected to the driving module (2) and the backlight module (3) via wires; The driving module (2) is connected to the display module (4) via a wire.

2. A display circuit according to claim 1, characterized in that: The driving module (2) comprises an ST7920 chip, an AIP31065 chip and an AIP31063 chip. The ST7920 chip is a SEG line driving module having 96 SEG lines; the AIP31065 chip has 40 SEG lines; and the AIP31063 chip has 80 SEG lines.

3. A display circuit according to claim 1, characterized in that: The backlight module (3) is mounted with an LED backlight power supply and a backlight circuit board, and a plurality of optical sheets are fixedly mounted on the surface of the backlight circuit board.

4. A display circuit according to claim 2, characterized in that: The driving module (2) is also provided with a compatible chip AIP31020 / UCI7920.

5. A display circuit according to claim 1, characterized in that: The main control module (1) adopts a single-chip MCU of model GD32F130C8T6.

6. A display circuit according to claim 1, characterized in that: The display module (4) adopts an LCD liquid crystal display screen.

Images