Scanning direction control module

Abstract

The utility model discloses a scanning direction control module, including inverting IC, driver IC and display module, inverting IC controls the scanning mode of driver IC, driver IC drives said display module, driver IC includes UPDN pin and SHLR pin, UPDN pin is connected with the pin A of inverting IC, SHLR pin is connected with the pin B of inverting IC, SHLR pin is connected with the pin A of inverting IC, and SHLR pin is connected with the pin B of inverting IC. The SHLR pin is connected with a Y pin of the anti-phase IC, and an A pin of the anti-phase IC is connected with the control IO port. The control IO port and the anti-phase IC are utilized, the anti-phase IC can control signals of the UPDN pin and the SHLR pin respectively, and 180-degree overturning is achieved. And when the control IO port outputs a high level, the display data of the display module is overturned by 180 degrees. And when the IO port V is controlled to output a low level, the display data of the display module is not overturned. Due to the fact that only one IO pin of the MCU needs to be occupied, 180-degree overturning of display data of the display module can be achieved, precious IO ports can be saved, and different scanning requirements of customers are met.

Description

Technical Field

[0001] This utility model relates to a display scanning module, or more precisely, a scanning direction control module. Background Technology

[0002] Large-size display modules in industrial applications typically use RGB / LVDS interfaces. However, these interfaces are not initialized, meaning the scanning direction cannot be controlled by software. They usually only support one scanning direction, which makes them inflexible and unable to meet the requirements of some customers.

[0003] like Figure 4 As shown, the existing driver IC10 has a UPDN pin 110 and an SHLR pin 120, which are used to control the vertical and horizontal flipping of the display data of the display module 30, respectively. It requires two independent I / O lines, namely IO1 and IO2, to control the UPDN pin and the SHLR pin, respectively. If the customer's MCU has only one available I / O line, it can only control the vertical or horizontal flipping scan, and cannot achieve 180° flipping of the display data.

[0004] Chinese patent document CN1235181C discloses a matrix driving method for driving a liquid crystal display device. The liquid crystal display device includes: a liquid crystal display device comprising a liquid crystal layer exhibiting a cholesteric phase, and a plurality of scanning electrodes and signal electrodes extending intersectingly, sandwiching the liquid crystal layer and utilizing the selective reflectivity of the liquid crystal to achieve display; and a driving device for driving the liquid crystal display device. The matrix driving method includes the following steps: applying a driving voltage of a single polarity selecting a signal voltage to the scanning electrodes in each frame, and reversing the polarity of the driving voltage in each frame; and driving the signal electrode by applying a single polarity driving voltage to the scanning electrodes during a scanning cycle. Each scanning electrode is sequentially given a selection signal voltage, causing the scanning electrodes to sequentially enter a selected state. Simultaneously, while the selection signal voltage is applied to the scanning electrodes, a rewrite signal voltage corresponding to the selected state of each scanning electrode is applied to each signal electrode. The application period for applying the selection signal voltage to the scanning electrodes is set to half the scanning period. The polarity of the rewrite signal voltage applied to the signal electrodes is changed during the scanning period, wherein the effective values ​​of the positive and negative voltages of the rewrite signal voltage are substantially the same during the scanning period, and the total number of positive voltage periods to be applied to the signal electrodes is set to be the same length as the total number of negative voltage periods. The driving device can adjust the phase of the rewrite signal voltage to be applied to the signal electrodes in sync with the application of the selection signal voltage to the scanning electrodes, thereby changing the density of the final displayed image. The liquid crystal display device can maintain display without applying voltage. Before the selection period for applying the selection signal voltage, the driving device applies a reset voltage to each scanning electrode, causing the liquid crystal to enter an initial state. After applying a selection signal voltage to the scan electrodes, the driving device applies a sustaining voltage to each scan electrode to establish a liquid crystal state selected by the selection signal voltage. The driving device performs a cross-driving process that divides a frame into multiple segments. The driving device also performs a progressive driving process that sequentially scans a plurality of scan electrodes in each frame. The driving device includes a power supply circuit capable of switching the positive and negative output voltages and a scan driver integrated circuit connected between the power supply circuit and the plurality of scan electrodes, wherein the polarity of the driving voltage applied to the scan electrodes can be reversed by switching the positive and negative output voltages of the power supply circuit in each frame. The power supply circuit includes a power supply with multiple output terminals and a circuit capable of switching the connection to the terminals of the scan driver integrated circuit.

[0005] Clearly, this patent describes a liquid crystal display device driving mechanism that provides a power supply to the liquid crystal device and includes a scan driver integrated circuit, a signal driver integrated circuit, and a controller. This power supply is connected to the scan driver integrated circuit and can change the polarity of its output voltage. Through the scan driver integrated circuit connected to the power supply, a driving voltage can be applied to the scan electrodes. In this configuration, the controller can control the power supply and the scan driver integrated circuit, causing the power supply output voltage to change from positive to negative or vice versa in each frame. This results in a single polarity of the driving voltage applied to the scan electrodes in each frame, with the polarity flipping within each frame. However, this structure cannot solve the control problems caused by the current limited I / O ports. Utility Model Content

[0006] Based on this, it is necessary to provide a scanning direction control module to address the aforementioned technical problems. This module includes an inverter IC, a driver IC, and a display module. The inverter IC controls the scanning mode of the driver IC, and the driver IC drives the display module. The driver IC includes a UPDN pin and an SHLR pin. The UPDN pin is connected to the A pin of the inverter IC, and the SHLR pin is connected to the Y pin of the inverter IC. The A pin of the inverter IC is connected to a control I / O port. Using the control I / O port and the inverter IC, the signals of the UPDN and SHLR pins can be controlled respectively to achieve a 180° flip. When the control I / O port outputs a high level, the display data of the display module flips 180°. When the control I / O port outputs a low level, the display data of the display module does not flip. Since only one I / O pin of the MCU is needed to achieve a 180° flip of the display data, valuable I / O ports are saved, different scanning requirements of customers are met, and design flexibility is increased.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A scanning direction control module, characterized in that the scanning direction control module comprises an inverter IC, a driver IC, and a display module, wherein the inverter IC controls the scanning mode of the driver IC, and the driver IC drives the display module.

[0009] The driver IC includes a UPDN pin and an SHLR pin. The UPDN pin is connected to the A pin of the inverter IC, the SHLR pin is connected to the Y pin of the inverter IC, and the A pin of the inverter IC is connected to the control I / O port.

[0010] In a preferred embodiment of the scanning direction control module provided by this utility model, the control I / O port is one of the I / O pins of the MCU.

[0011] In a preferred embodiment of the scanning direction control module provided by this utility model, the VCC pin of the inverting IC is connected to the system VDD power supply.

[0012] In a preferred embodiment of the scanning direction control module provided by this utility model, the control I / O port is connected to the UPDN pin through a first resistor.

[0013] In a preferred embodiment of the scanning direction control module provided by this utility model, the resistance of the first resistor is zero.

[0014] In a preferred embodiment of the scanning direction control module provided by this utility model, the first resistor is an adjustable resistor.

[0015] In a preferred embodiment of the scanning direction control module provided by this utility model, the control I / O port is grounded through a second resistor, the resistance of which is 10K ohms.

[0016] In a preferred embodiment of the scanning direction control module provided by this utility model, the inverting IC is model number SN74LVC1G14DCKT.

[0017] In a preferred embodiment of the scanning direction control module provided by this utility model, both the inverting IC and the driving IC are provided with metal shielding covers.

[0018] In a preferred embodiment of the scanning direction control module provided by this utility model, the metal shield is an aluminum fin.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a scanning direction control module that utilizes a control I / O port and an inverting IC. The inverting IC can control the signals of the UPDN and SHLR pins respectively, achieving a 180° flip. When the control I / O port outputs a high level, the display data of the display module flips 180°. When the control I / O port outputs a low level, the display data of the display module does not flip. Since only one I / O pin of the MCU is needed to achieve a 180° flip of the display data, valuable I / O ports are saved, meeting different scanning requirements of customers and increasing design flexibility.

[0021] Alternatively, this first resistor can be made adjustable. Using this first resistor, the user can adjust the signal level on the UPDN pin, providing a reference for later optimization design.

[0022] Alternatively, the inverter IC can be designated as SN74LVC1G14DCKT. Both the inverter IC and the driver IC are equipped with a metal shield. This metal shield is made of aluminum fins. The metal shield effectively prevents the inverter IC and driver IC from external electromagnetic interference, providing anti-interference and heat dissipation performance. Attached Figure Description

[0023] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the scanning direction control module of this utility model;

[0025] Figure 2 for Figure 1 A control diagram of the scanning direction control module in the image;

[0026] Figure 3 This is a control schematic diagram of another embodiment of the scanning direction control module of this utility model;

[0027] Figure 4 This is a schematic diagram of the existing scanning direction control module;

[0028] The markings in the diagram are explained as follows: 1. Driver IC; 11. UPDN pin; 12. SHLR pin; 2. Inverting IC; 3. Display module; 4. Control I / O port; R1. First resistor; R2. Second resistor. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] As described in the background section, existing technologies for large-size industrial modules generally use RGB / LVDS interfaces, which are not initialized and therefore cannot control the scanning direction via software. They typically only support one scanning direction, making them inflexible and unable to meet the requirements of some customers. The existing driver IC 10 has a UPDN pin 110 and an SHLR pin 120, used to control the vertical and horizontal flipping of the display data in the display module 30, respectively. This requires two independent I / O lines, IO1 and IO2, to control the UPDN and SHLR pins respectively. If the customer's MCU only has one available I / O line, it can only control vertical or horizontal flipping, and cannot achieve 180° flipping of the display data.

[0031] To solve this technical problem, the present invention provides a scanning direction control module, which includes an inverter IC2, a driver IC1 and a display module 3. The inverter IC2 controls the scanning mode of the driver IC1, and the driver IC1 drives the display module 3.

[0032] The driver IC1 includes a UPDN pin 11 and an SHLR pin 12. The UPDN pin 11 is connected to the A pin of the inverter IC2, and the SHLR pin 12 is connected to the Y pin of the inverter IC2. The A pin of the inverter IC2 is connected to control I / O port 4. Control I / O port 4 is one of the I / O pins of the MCU.

[0033] Through the above structural design, using control I / O port 4 and inverter IC2, the signals of UPDN pin 11 and SHLR pin 12 can be controlled respectively to achieve 180° flipping. When control I / O port 4 outputs a high level, the display data of display module 3 flips 180°. When control I / O port 4V outputs a low level, the display data of display module 3 does not flip. Since only one I / O pin of the MCU is needed to achieve 180° flipping of the display data of display module 3, valuable I / O ports can be saved, different scanning requirements of customers can be met, and the design flexibility can be increased.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] like Figure 1 and Figure 2 As shown, the scanning direction control module includes an inverter IC2, a driver IC1, and a display module 3. The inverter IC2 controls the scanning mode of the driver IC1, and the driver IC1 drives the display module 3.

[0038] The driver IC1 includes a UPDN pin 11 and an SHLR pin 12. The UPDN pin 11 is connected to the A pin of the inverter IC2, the SHLR pin 12 is connected to the Y pin of the inverter IC2, and the A pin of the inverter IC2 is connected to the control I / O port 4.

[0039] It should be noted that control I / O port 4 is one of the I / O pins of the MCU.

[0040] Additionally, the VCC pin of the inverter IC2 is connected to the system VDD power supply. The control I / O port 4 is connected to the UPDN pin 11 through the first resistor R1.

[0041] It should be noted that the resistance of the first resistor R1 is zero. The control I / O port 4 is grounded through the second resistor R2, which has a resistance of 10K ohms.

[0042] The working principle of this embodiment will be described below.

[0043] Using control I / O port 4 and inverter IC2, the signals on pins UPDN 11 and SHLR 12 can be controlled respectively to achieve 180° flipping. When control I / O port 4 outputs a high level, the display data of display module 3 flips 180°. When control I / O port 4 outputs a low level, the display data of display module 3 does not flip. Since only one I / O pin of the MCU is needed to achieve 180° flipping of the display data of display module 3, valuable I / O ports can be saved, meeting different scanning requirements of customers and increasing design flexibility.

[0044] The scanning direction control module provided in Embodiment 1 is further optimized. Specifically, the first resistor R1 is an adjustable resistor.

[0045] The working principle of this embodiment will be described below.

[0046] Using the first resistor R1, the user can adjust the signal level on pin 11 of UPDN, providing a reference for later optimization design.

[0047] The scanning direction control module provided in Embodiment 1 or 2 is further optimized. Specifically, the model of the inverting IC2 is SN74LVC1G14DCKT.

[0048] Both the inverter IC2 and the driver IC1 are equipped with metal shielding covers.

[0049] The metal shield is made of aluminum fins.

[0050] The working principle of this embodiment will be described below.

[0051] The metal shielding effectively prevents the inverter IC2 and driver IC1 from being subjected to external electromagnetic interference, providing anti-interference and heat dissipation performance.

[0052] The terms "coupling" and "coupled" used in the embodiments of this application should be interpreted broadly. For example, they can refer to a physical direct connection or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A scanning direction control module, characterized in that, The scanning direction control module includes an inverter IC (2), a driver IC (1), and a display module (3). The inverter IC (2) controls the scanning mode of the driver IC (1), and the driver IC (1) drives the display module (3). The driver IC (1) includes a UPDN pin (11) and an SHLR pin (12). The UPDN pin (11) is connected to the A pin of the inverter IC (2), and the SHLR pin (12) is connected to the Y pin of the inverter IC (2). The A pin of the inverter IC (2) is connected to the control I / O port (4).

2. The scanning direction control module according to claim 1, characterized in that, The control I / O port (4) is one of the I / O pins of the MCU.

3. The scanning direction control module according to claim 1, characterized in that, The VCC pin of the inverting IC (2) is connected to the system VDD power supply.

4. The scanning direction control module according to claim 1, characterized in that, The control I / O port (4) is connected to the UPDN pin (11) through the first resistor (R1).

5. The scanning direction control module according to claim 2, characterized in that, The resistance of the first resistor (R1) is zero.

6. The scanning direction control module according to claim 2, characterized in that, The first resistor (R1) is an adjustable resistor.

7. The scanning direction control module according to claim 3, characterized in that, The control IO port (4) is grounded through a second resistor (R2), and the resistance of the second resistor (R2) is 10K ohms.

8. The scanning direction control module according to claim 1, characterized in that, The inverter IC (2) is model number SN74LVC1G14DCKT.

9. The scanning direction control module according to claim 1, characterized in that, Both the inverter IC (2) and the driver IC (1) are provided with metal shielding covers.

10. The scanning direction control module according to claim 9, characterized in that, The metal shielding cover is made of aluminum fins.

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