Serial port protocol driven multi-screen liquid crystal display module

Abstract

The utility model belongs to LCD technical field especially is a kind of serial port protocol drive's multi-screen liquid crystal display module, including general circuit board, the front side of general circuit board movable contact has multiple COG module, and the back of general circuit board is electrically connected with multiple FPC seat.The utility model with the module to general circuit board as core, front side movable contact multiple COG module, back then integrated multiple key circuits and connecting components, external signal is connected to general circuit board connecting seat by IDC line, and then input into general circuit board, these signals contain power signal and serial port data signal, power signal provides the electric energy required for the operation of entire module, and serial port data signal carries the information to be shown on LCD liquid crystal box, signal is distributed to each COG module after being handled on general circuit board and being shown, simultaneously, key connector provides debugging control function, and it is convenient to change display content according to application demand, realize serial port drive multi-screen LCD display, realize the application of vending machine.

Description

Technical Field

[0001] This utility model relates to the field of LCD technology, specifically to a multi-screen liquid crystal display module driven by a serial port protocol. Background Technology

[0002] As an intelligent retail device, vending machines occupy an increasingly important position in modern commerce due to their convenience, efficiency, and flexibility. They break through the time and space limitations of traditional retail models, enabling 24 / 7 operation and providing consumers with shopping services anytime, anywhere. Currently, vending machines are widely used in various public places, such as schools, shopping malls, stations, and hospitals, becoming an indispensable part of people's daily lives.

[0003] In vending machines with transparent windows, transparent glass or plastic windows are typically used to ensure consumers can clearly see the products. However, the mainstream method for displaying key information such as product prices and inventory is still paper labels. Replacing these paper labels is cumbersome, requiring manual opening of each vending machine door, tearing off the old label, and pasting a new one. With a large variety of products or frequent information updates, this method is not only time-consuming and labor-intensive but also prone to problems such as uneven pasting and information errors, negatively impacting the consumer shopping experience. Therefore, we propose a serial port protocol-driven multi-screen LCD display module to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a multi-screen LCD display module driven by a serial port protocol, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A serial port protocol driven multi-screen LCD display module includes a main circuit board. Multiple COG modules are movably contacted on the front side of the main circuit board. Multiple FPC sockets are electrically connected to the rear side of the main circuit board. A button connector and a main circuit board connector are electrically connected to the rear side of the main circuit board. An external connector is snapped into the main circuit board connector. A programming terminal is provided on the rear side of the main circuit board.

[0009] The COG module includes an LED frame, an LCD cell, a flexible circuit board, and an IC chip.

[0010] An LCD cell is provided on the front side of the LED plastic frame, a flexible circuit board is pressed onto the top of the LCD cell, and an IC chip is pressed onto the rear side of the LCD cell.

[0011] Furthermore, double-sided adhesive tape is adhered to the front side of the LED frame, and the LED frame is bonded to the LCD cell via the double-sided adhesive tape.

[0012] Furthermore, mounting blocks are welded to both sides of the LED plastic frame, and the mounting blocks are threadedly connected to the main circuit board by bolts.

[0013] Furthermore, the flexible circuit board mates with the corresponding FPC socket.

[0014] Furthermore, the external connector is connected to an external device via an IDC cable.

[0015] Furthermore, the LED frame is made of transparent plastic.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a multi-screen LCD display module driven by a serial port protocol, which has the following advantages:

[0018] This utility model utilizes a module with a main circuit board as its core. Multiple COG modules are movably connected to the front, while the rear integrates various key circuits and connecting components. External signals are connected to the main circuit board connector via IDC cables and then input into the main circuit board. These signals include power signals and serial port data signals. The power signals provide the necessary electrical energy for the entire module's operation, while the serial port data signals carry the information to be displayed on the LCD screen. After processing on the main circuit board, the signals are distributed to each COG module for display. Simultaneously, the button connector provides debugging and control functions, allowing for easy modification of the display content according to application requirements. This enables serial port-driven multi-screen LCD display, facilitating the application of automatic vending machines. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the rear three-dimensional structure of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the COG module of this utility model;

[0022] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0023] In the diagram: 1. Main circuit board; 2. COG module; 3. LED plastic frame; 4. Double-sided adhesive tape; 5. LCD cell; 6. Flexible circuit board; 7. IC chip; 8. FPC socket; 9. Button connector; 10. Main circuit board connector; 11. External connector; 12. Programming terminal; 13. Mounting block; 14. Bolt. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1-4 As shown, an embodiment of this utility model proposes a serial port protocol driven multi-screen liquid crystal display module, including a main circuit board 1. Multiple COG modules 2 are movably contacted on the front side of the main circuit board 1. Multiple FPC sockets 8 are electrically connected to the rear side of the main circuit board 1. A button connector 9 and a main circuit board connector 10 are electrically connected to the rear side of the main circuit board 1. An external connector 11 is snapped into the main circuit board connector 10. A programming terminal 12 is provided on the rear side of the main circuit board 1.

[0027] COG module 2 includes LED plastic frame 3, LCD cell 5, flexible circuit board 6, and IC chip 7;

[0028] An LCD cell 5 is located on the front side of the LED plastic frame 3. A flexible circuit board 6 is pressed onto the top of the LCD cell 5, and an IC chip 7 is pressed onto the rear side of the LCD cell 5.

[0029] In use, the module is centered on the main circuit board 1. The front side can movably contact multiple COG modules 2, while the rear side integrates various key circuits and connecting components. External signals are connected to the main circuit board connector 10 via IDC lines and then input into the main circuit board 1. These signals include power signals and serial port data signals. The power signals provide the electrical energy required for the entire module to operate, while the serial port data signals carry the information to be displayed on the LCD cell 5. After being processed on the main circuit board 1, the signals are distributed to each COG module 2 for display. At the same time, the button connector 9 provides debugging and control functions, which can easily change the display content according to application requirements, realize serial port-driven multi-screen LCD display, and realize the application of automatic vending machines.

[0030] In some embodiments, a double-sided adhesive tape 4 is attached to the front side of the LED frame 3, and the LED frame 3 is bonded to the LCD cell 5 through the double-sided adhesive tape 4.

[0031] First, the LCD cell 5 and IC chip 7 are electrically connected using an ACF film through a hot-pressing process. During the hot-pressing process, the conductive particles inside the ACF film are compressed, forming conductive channels in the vertical direction. This connects the electrodes of the LCD cell 5 with the pins of the IC chip 7, enabling the transmission of electrical signals. Similarly, the LCD cell 5 and flexible circuit board 6 are also electrically connected using an ACF film and a hot-pressing process, allowing the flexible circuit board 6 to interact with the LCD cell 5. When the main circuit board 1 transmits serial port data signals to the flexible circuit board 6 of the COG module 2, the flexible circuit board 6 transmits these signals to the IC chip 7. The IC chip 7 analyzes and processes the received serial port data signals according to a predetermined protocol and algorithm, generating corresponding drive signals. These drive signals control the arrangement of liquid crystal molecules in the LCD cell 5, thereby changing the optical properties of the liquid crystal cell and enabling the display of images and text.

[0032] In some embodiments, mounting blocks 13 are welded to both sides of the LED frame 3, and the mounting blocks 13 are threadedly connected to the main circuit board 1 by bolts 14.

[0033] The LED plastic frame 3 can be firmly fixed to the main circuit board 1 by the threaded connection of the mounting block 13 and the bolt 14, which effectively prevents the LED plastic frame 3 from loosening or even falling off due to external force, and also makes it easy to replace it individually.

[0034] In some embodiments, the flexible circuit board 6 mates with the corresponding FPC socket 8.

[0035] The flexible circuit board 6 is a highly flexible printed circuit board with conductive lines covering its surface. The FPC socket 8 is a connector specifically designed to be inserted into the flexible circuit board 6. It has elastic contacts inside. When the flexible circuit board 6 is inserted into the FPC socket 8, the elastic contacts will make close contact with the conductive lines on the flexible circuit board 6 to form a reliable electrical connection, ensuring that the current can be stably transmitted between the two and providing power support for the various electronic components in the module.

[0036] In some embodiments, the external connector 11 is connected to an external device via an IDC cable.

[0037] When connecting an IDC cable, there is no need to strip the insulation layer of the cable beforehand. The IDC connector equipped with the external connector 11 has a special blade structure. When the IDC cable is inserted into the connector, the blade can directly pierce the insulation layer, so that the internal wires can form an electrical connection with the metal contacts inside the connector.

[0038] In some embodiments, the LED frame 3 is made of transparent plastic.

[0039] The transparent plastic material has extremely high light transmittance, allowing the light emitted by the LEDs to pass through almost without loss. In multi-screen LCD display modules, this ensures that the LED backlight can efficiently illuminate the LCD panel, significantly improving the overall brightness of the screen and making the displayed content clearer and brighter, maintaining good visibility even in bright environments.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A serial port protocol driven multi-screen liquid crystal display module, comprising a main circuit board (1), characterized in that: The front side of the main circuit board (1) has multiple COG modules (2) in movable contact. The rear side of the main circuit board (1) is electrically connected to multiple FPC sockets (8). The rear side of the main circuit board (1) is electrically connected to a button connector (9) and a main circuit board connector (10). The main circuit board connector (10) is snapped with an external connector (11). The rear side of the main circuit board (1) is provided with a programming terminal (12). The COG module (2) includes an LED plastic frame (3), an LCD cell (5), a flexible circuit board (6), and an IC chip (7). The front side of the LED plastic frame (3) is provided with an LCD cell (5), the top of the LCD cell (5) is pressed with a flexible circuit board (6), and the rear side of the LCD cell (5) is pressed with an IC chip (7).

2. The multi-screen LCD display module driven by a serial port protocol according to claim 1, characterized in that: The front side of the LED plastic frame (3) is glued with double-sided adhesive tape (4), and the LED plastic frame (3) is glued to the LCD cell (5) through the double-sided adhesive tape (4).

3. A multi-screen LCD display module driven by a serial port protocol according to claim 2, characterized in that: The LED plastic frame (3) has mounting blocks (13) welded on both sides, and the mounting blocks (13) are threadedly connected to the main circuit board (1) by bolts (14).

4. A multi-screen LCD display module driven by a serial port protocol according to claim 3, characterized in that: The flexible circuit board (6) is coupled with the corresponding FPC base (8).

5. A multi-screen LCD display module driven by a serial port protocol according to claim 4, characterized in that: The external connector (11) is connected to an external device via an IDC line.

6. A multi-screen LCD display module driven by a serial port protocol according to claim 5, characterized in that: The LED frame (3) is made of transparent plastic.

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