vishay lcd module made in china

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The LCD module incorporates the LCD panel and the driver/controller for displaying images, including the drive circuit, power supply circuit, the light source for the backlight, etc. LCD stands for "Liquid Crystal Display." LCD module is used in a wide variety of devices because they are relatively inexpensive, can be used in thin packages, and require little power.

LCD modules technology is widely used in devices with LCD displays. They are not only used as monitors in measuring instruments such as oscilloscopes and spectrum analyzers but are also widely used in audio-visual equipment such as TVs and audio equipment, and OA equipment such as printers.

In addition, some products may require a smaller size or touch panel type. Recently, LCD modules are often used for in-vehicle equipment, and LCD modules are widely used for car navigation systems and meter panels. High-performance LCD modules provide high visibility day and night, making them reliable devices from a safety standpoint as well.

This section describes the structure and principle of LCD modules. An LCD panel consists of a liquid crystal layer sandwiched between a glass substrate with transparent electrodes and a polarizing plate. By applying a voltage to the liquid crystal, the direction of the liquid crystal molecules is changed, and the amount of light transmitted is controlled, thereby displaying an image. LCD modules can be broadly classified into three types according to the differences in the components mounted on the LCD panel.

COB TypeThis type of LCD modules consists of a controller, driver, DC-DC converter, LED backlight, and other components mounted on a printed circuit board. Although it is difficult to miniaturize, it is suitable for industrial applications as an integrated module that incorporates all functions.

COG TypeThis is an LCD modules with various components mounted on a glass substrate. Compared to the COB type, it can be downsized because it does not use a printed circuit board. It is also attractive in that it can be made at a low cost and is a module that is widely used.

COF TypeThis is an LCD modules in which the driver is mounted directly on a polyimide film substrate. Although more costly, this module is used in large TVs and other products.

The structure of LCD modules are like a sandwich, with each component layered on top of the other. The components are a polarizing filter, glass substrate, transparent electrode, alignment film, liquid crystal, and color filter. The roles of each component are as follows.

Transparent Electrode: Electrodes are used to drive the LCD modules. A highly transparent material is used to not interfere with the display of images.

By mixing materials with different properties with LCD base materials such as ester-based / biphenyl-based / PCH-based (phenylcyclohexane) / cyclohexane-based / phenylpyridimine-based / dioxane-based, various LCD modules with performance suitable for different applications can be made. As an example, LCD modules for automotive applications, unlike those for office or home use, must have high durability against heat and vibration. Therefore, it is necessary to blend materials that improve thermal and vibration endurance performance. As described above, LCD materials are blended to have the appropriate performance for the situation in which they will be used.

WO1602I3 and WO1602I5 are two models of 16 characters by 2 lines of COG LCD P/N WO1602I with PCB board on module. WO1602I3 and WO1602I5 are built in with ST7032i IC; it supports I2C interface. The advantage of WO1602I3/WO1602I5 is having circuit layout on PCB board and with screw holes which make modules can be fixed on customers’ applications easily. Also, there are three kinds of connector pitch sizes of 2.54mm (default), 1.0mm and 0.5mm for options.

The supply voltage for logic (VDD) of WO1602I3 is 3.3V; as to the WO1602I5 is 5V, 1/16 duty circle, 1/5 bias. The module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO1602I3 and WO1602I5 are available in FSTN positive Transflective LCD and with White LED backlight; please contact us if you need different types of LCDs or LED combinations.

WO12864K and WO12864K1 models are monochrome COG graphic LCD modules made of 128x64 dot matrix format. WO12864K/WO12864K1 COG Module is built in with ST7565 IC, it supports 8-bit 6800, 8-bit 8080 parallel and 4-wire serial SPI interface, power supply voltage 3V, VOP 9.5V, 1/65 duty. The WO12864K item is adopted ST7565V IC which is built-in with negative voltage, as to the WO12864K1 item is adopted ST7565P IC which is built- in with positive voltage.

This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO12864K/K1 are available in STN Negative, Blue Transmissive LCD and with White LED backlight. Please contact us if you need different types of LCDs or LED combinations.

WO128128A2 model is a round COG LCD display WO128128A model with a PCB board on module. This Round STN COG module is built in with ST75161 IC; it supports 8080 parallel (default), 6800 parallel, 3-wire and 4-wire serial SPI, I2C interface, power supply voltage 3V, 1/136 driving duty, 1/12 BIAS. The advantage of WO128128A2 is having circuit layout on PCB board and with screw holes which make modules can be fixed on customers’ applications easily. Also, there are three kinds of connector pitch sizes of 2.54mm (default), 1.0mm and 0.5mm for options. WO128128A2 also have VDD 5V power supply voltage for optional.

The supply voltage for logic of WO128128A2 is 2.7V to 3.3V, typical value 3V. This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO128128A2 is available in FSTN positive LCD type with white LED backlight. Please contact us if you need different types of LCDs or LED combinations.

WO240128B2 model is a COG LCD display WO240128B model with a PCB board on module, which is made of 240x128 dots. WO240128B2 is built in with ST7586S controller IC; it supports 6800 8-bit (default), 8080 8-bit parallel and serial SPI interface, power supply voltage 3.3V, 1/128 duty, 1/12 Bias. The advantage of WO240128B2 is having circuit layout on PCB board and with screw holes which make modules can be fixed on customers’ applications easily. Also, there are three kinds of connector pitch sizes of 2.54mm (default), 1.0mm and 0.5mm for options. WO240128B2 also have VDD 5V power supply voltage for optional.

This WO240128B2 module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO240128B2 is available for FSTN positive Transflective with white LED backlight. Please contact us if you need different types of LCDs or LED combinations.

WO256128A2 model is a COG LCD display WO256128A model featured with a PCB board on module which is made of 256x128 dots, diagonal size 2.9 inch. WO256128A2 is built in with ST75256 controller IC, it supports 8080 8-bit parallel (default), 6800 8-bit and 4-wire serial SPI and I2C interface, power supply voltage 3.3V, 1/128 duty, 1/12 Bias. The advantage of WO256128A2 is having circuit layout on PCB board and with screw holes which make modules can be fixed on customers’ applications easily. Also, there are three kinds of connector pitch sizes of 2.54mm (default), 1.0mm and 0.5mm for options. WO256128A2 also have VDD 5V power supply voltage for optional.

WO256128A2 module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. The WO256128A2 is available for FSTN positive Transflective with white LED backlight. Please contact us if you need different types of LCDs or LED combinations.

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