Dimensions length and width mm
As shown in the above figure: LCD appearance size: 50mm long * 30MM wide
As shown in the figure above: the display contents are battery, voltage and number 8
What color do you need for the display effect, white background and black characters? White on black? White on blue?
LCD TERMINAL TYPE
LCD Displays may have different connection types with user circuits or driver boards. Pin Terminal, Zebra Connector (Elastomers Silicon Strips), Heat Seal and FPC (FLEX Cable) types are available.
It is used extensively for glass LCD displays and COG LCDs. The conductive metal pins are connected in such a way that they contact the polymer coated spots on the windscreen or rear window. The connection points of the pins are fixed with adhesive glue.
Elastomers Silicon Strips
This technology is extensively used in COB LCD displays. The layered conductive and insulating silicone laminated strip provides power transmission between the terminals and the PCB and the conductive polymer paths on the LCD glass. In this type of Displays, the glass LCD is mounted on the PCB with a metal or plastic frame.
This terminal assembly is preferred by high-volume manufacturers since it requires thermal mounting expertise. Conductive carbon ribbon is connect to the surface of PCB and the conductive polymer terminals on LCD by heat treatment. Although the cost of production is cheaper, its use is reduced due to its high wastage.
FPC (FLEX Cable)
It is highly preferred for COG(Chip on Glass) LCDs. The film cable connected on Chip positioned on LCD Glass(COG). FPC cable connect to mainboard with ZIF connectors. It provides ease of use in production. However, due to high COG drive IC costs, they are not used widely. Nowadays this terminal type only used on graphic LCD Displays and TFT displays.
LCD POLARIZATION TYPE
Different polarization filters should be used in LCD Displays according to backlight options. Polarization filters are located on the top and bottom of the LCD Glass.
This polarization type has no backlight option. LCD Display can be read by ambient light or external light source. Reflective film fully reflects the light in the environment. Reflective polarization type should be used in mobile applications and applications where energy consumption is important. (Ex: Energy meters, Calculators, Measuring instruments, etc.) This filter is only used for Positive LCD Indicators.
Transflective (Semi Transparent)
In this polarization type, the polarization filter on the back of the LCD Display is in Transflective(semi-transparent) mode. The LCD can be read with both the outdoor light source and the Backlight. Most of the positive LCD modules are Transflective. Because both natural light in the environment and dark areas should be read with their own backlighting. This filter is used only in Positive LCD Indicators as in Reflective Polarized LCDs.
Transmissive (w/o polarizer)
This LCD display does not have a Polarization filter. Negative LCDs are preferred this technology because negative LCD displays cannot be read with natural light outside. STN Blue / White, VATN (Vertical Alignment Twisted Nematic), FSTN Negative Black / White (Black / White), such as negative polarized LCD Displays Transmissive Polarization should be preferred.
LCD VIEW ANGLE
LCD Displays are classified according to duty cycle and flow direction of liquid crystal material. Based on these criteria, there are significant changes in the viewing angle of the LCD display. This difference in LCD viewing angle is expressed in relation to the Clock Position system, a military relative positioning system. Basically, the LCD is expressed at two different angles, 6:00 o'clock and 12:00 o'clock. According to this system, if the LCD position is below the user's head level (eg dishwasher, etc., white goods on the floor, floor scales, etc.), it should be preferred at 12:00 o'clock. This provides a clearer reading from the top of the indicator below the eye level. If the LCD is above eye level (elevators, on-door displays, refrigerators, etc.), the display direction should be selected at 6:00. This allows the LCD Display above the eye level to be read more clearly.
LCD VIEW MODE (Positive/Negative)
Monochrome LCD Displays have two different display modes. Polarization is achieved by changing the direction of the filters.
In this type of display, the background is light coloured. The segments on the LCD screen obscure ambient light. Standard Green / Black or Black / White LCD displays are included in this group.
- TN: Gray segments on Light Yellow/Green surface.
- STN-Green: Dark Gray segments on Light Yellow/Green surface.
- STN-Silver: Dark Gray/Black Segments on white surface.
- FSTN: Black Segments on Light Gray/White Surface.
In particular, the blue color indicators fall into this group. In negative mode, the background is Dark (Black or Dark Navy) and segments are light color (White or light white).
- TN: Light Green or Gray Segments on dark gray surface (Low Contrast).
- STN ("Blue-Negative"): White/Blue segments on dark Navy blue surface.
- FSTN: White Segments on Dark Gray Surface (White Backlight).
- VATN, EBN, IBN: Pure White segments on dark black surface (High Contrast/Wide View Angle/White Backlight).
The most common type ofbacklight used in LCD Displays is LED Backlight. The backlight color of the LCD Indicators is determined by the color of the LED used. They can be produced in Blue, Yellow, Green, White and RGB (Red / Green / Blue) colors.
Normally in driverless LCD Displays backlight is manufactured with transparent acrylic plates surrounded by a reflective tape and diffuser films placed on the surfaces of these plates. The Side Strip LED, which is selected according to the pin connections of the acrylic plate and LCD Display, is adhered to the appropriate edge of the acrylic plate, keeping the light in the transparent plate and illuminating the LCD surface. LCD backlight are manufactured in two different types.
In this type of backlight, acrylic materials are cut manually. The edges of the cut acrylic material are covering with reflective tape. Diffuser films are adhered to the top and bottom surface of the acrylic material and Side LED fitting on acrylic. According to user request, glass LCD Display and Acrylic LED Backlight are glued together or packaged separately. This is preferred because it provides the advantage of molding at the initial production costs despite the high unit cost of backlight.
In this type of backlight, transparent plastic material is produced with a special injection mold. Due to the low raw material waste, the unit cost is more economical. However, initial production costs are slightly higher than manual cut acrylic backlight due to molding costs.
Shenzhen Haoweige Electronics Co., Ltd.
Add:6th Floor, Building A, Nanchang First Industrial Zone, Gushu, Baoan District, Shenzhen