Tianxianwei manufacturer is designing many standard module products according to market demand to meet the needs of a large customer base. How to choose the appropriate LCD display module according to the needs of product development
The content priority method is to select standard products based on prioritizing the requirements of the display screen and balancing them with structure. This method is used when the product chassis structure leaves a large selection space for modules, or when the chassis can refer to the size layout of modules. The specific steps are as follows.
Step 1: First, design the image content that the product needs to display, such as menu content, graphic size, etc., to determine the display resolution of the module, which is the maximum number of pixels displayed.
Step 2: Search for standard module product series based on the displayed resolution. These standard module product series all have the same or similar display resolution, but the structural dimensions of the modules are slightly different.
Step 3: Compare the dimensions of the initially selected standard module product series with the chassis structural dimensions used in the development of the product, and select one of the standard module product series.
Step 4: In this standard module series, select one of the standard module models based on the resources of the product's MPU system.
Step 5: Review whether the selected module meets the requirements for display and structure. If it does, select it; Otherwise, repeat until appropriate.
This method will maximize the display effect, as shown in the following examples:
The display terminal of a CNC equipment needs to display the real-time 3D coordinate values of the current tool processing route map and position. There are more than 10 parameter settings, and it is hoped to maximize the display in one menu.
Firstly, estimate the maximum size required for the graphics and the number of text required for the menu using a pixel matrix. There are 13 menu items, each with a maximum of 18 Chinese characters. Based on the 16x16 dot matrix font data of national standard Chinese characters, a minimum of 18x16=288 pixel columns are required for each row; The minimum requirement is 13x16=208 pixel rows. Therefore, the minimum display resolution is 300x208 pixels.
Based on this data, we searched for the standard module product series of TopMicro Company and found that only the 320 × 240 dot matrix module product series met the requirements. We verified the display content requirements, such as considering the menu layout from the perspective of display effect, and 0 accepted the 320 × 240 dot matrix module. From TopMicro's module product series, it was found that there are four or five product series for the 320x240 lattice module series, ranging from 3 to 5.7 inches. Therefore, the window size and structural size of these products were used to compare the chassis structure and layout of the display terminal, and the appropriate module product series was selected, such as the 5.1 inch LM320240 series. Continuing to evaluate the circuit characteristics of the LM320240 product series, there are external controller modules and internal controller modules in the LM320240 module series. There are several types of built-in controller modules, including the S1D13700 controller module, the RA8806 controller module, and the T8000 controller module. Based on the configuration of the MPU system resources on the display terminal, the module LM320240TCW was ultimately chosen, which has a relatively simple drawing, a T8000 controller with a Chinese character library, and a working power supply of 3.3V.
3. Structure priority method
The structure priority method is to select standard module products based on their external structural dimensions. This method is used when the structural dimensions of the product's chassis have been fixed, and there is almost little room for module size selection. The specific steps are as follows:
Step 1: Based on the size and layout of the product's chassis structure, estimate the maximum size of the module's external appearance.
Step 2: Use this size to find the closest standard module product series.
Step 3: Based on the display resolution of the initially selected standard module series, design the display screen and select a more suitable module series.
Step 4: In this standard module series, select one of the module models based on the resources of the product's MPU system
Step 5: Review whether the selected module meets the requirements for display and structure. If it does, select it; Otherwise, repeat until appropriate.
This method will maximize the satisfaction of structural dimensions, as illustrated by the following examples.
A portable testing instrument with a selected chassis that can provide a fixed size of approximately 93mm x 70mm for the position of the LCD display module. The display content only displays the on-site test data without any graphic requirements.
Tianxianwei manufacturer is designing many standard module products according to market demand to meet the needs of a large customer base. How to choose the appropriate LCD display module according to the needs of product development
The content priority method is to select standard products based on prioritizing the requirements of the display screen and balancing them with structure. This method is used when the product chassis structure leaves a large selection space for modules, or when the chassis can refer to the size layout of modules. The specific steps are as follows.
Step 1: First, design the image content that the product needs to display, such as menu content, graphic size, etc., to determine the display resolution of the module, which is the maximum number of pixels displayed.
Step 2: Search for standard module product series based on the displayed resolution. These standard module product series all have the same or similar display resolution, but the structural dimensions of the modules are slightly different.
Step 3: Compare the dimensions of the initially selected standard module product series with the chassis structural dimensions used in the development of the product, and select one of the standard module product series.
Step 4: In this standard module series, select one of the standard module models based on the resources of the product's MPU system.
Step 5: Review whether the selected module meets the requirements for display and structure. If it does, select it; Otherwise, repeat until appropriate.
This method will maximize the display effect, as shown in the following examples:
The display terminal of a CNC equipment needs to display the real-time 3D coordinate values of the current tool processing route map and position. There are more than 10 parameter settings, and it is hoped to maximize the display in one menu.
Firstly, estimate the maximum size required for the graphics and the number of text required for the menu using a pixel matrix. There are 13 menu items, each with a maximum of 18 Chinese characters. Based on the 16x16 dot matrix font data of national standard Chinese characters, a minimum of 18x16=288 pixel columns are required for each row; The minimum requirement is 13x16=208 pixel rows. Therefore, the minimum display resolution is 300x208 pixels.
Based on this data, we searched for the standard module product series of TopMicro Company and found that only the 320 × 240 dot matrix module product series met the requirements. We verified the display content requirements, such as considering the menu layout from the perspective of display effect, and 0 accepted the 320 × 240 dot matrix module. From TopMicro's module product series, it was found that there are four or five product series for the 320x240 lattice module series, ranging from 3 to 5.7 inches. Therefore, the window size and structural size of these products were used to compare the chassis structure and layout of the display terminal, and the appropriate module product series was selected, such as the 5.1 inch LM320240 series. Continuing to evaluate the circuit characteristics of the LM320240 product series, there are external controller modules and internal controller modules in the LM320240 module series. There are several types of built-in controller modules, including the S1D13700 controller module, the RA8806 controller module, and the T8000 controller module. Based on the configuration of the MPU system resources on the display terminal, the module LM320240TCW was ultimately chosen, which has a relatively simple drawing, a T8000 controller with a Chinese character library, and a working power supply of 3.3V.
3. Structure priority method
The structure priority method is to select standard module products based on their external structural dimensions. This method is used when the structural dimensions of the product's chassis have been fixed, and there is almost little room for module size selection. The specific steps are as follows:
Step 1: Based on the size and layout of the product's chassis structure, estimate the maximum size of the module's external appearance.
Step 2: Use this size to find the closest standard module product series.
Step 3: Based on the display resolution of the initially selected standard module series, design the display screen and select a more suitable module series.
Step 4: In this standard module series, select one of the module models based on the resources of the product's MPU system
Step 5: Review whether the selected module meets the requirements for display and structure. If it does, select it; Otherwise, repeat until appropriate.
This method will maximize the satisfaction of structural dimensions, as illustrated by the following examples.
A portable testing instrument with a selected chassis that can provide a fixed size of approximately 93mm x 70mm for the position of the LCD display module. The display content only displays the on-site test data without any graphic requirements.
