Thin Film Transistor

TFT (Thin Film Transistor) that is a thin film field-effect transistor. The so called thin-film transistor, liquid crystal means that each pixel on the lcd module are made in the subsequent thin film transistor integrated to drive. Which can achieve high-speed, high-brightness, high-contrast display screen information. TFT active matrix liquid crystal display belong. TFT LCD display is characterized by good brightness, high contrast, strong sense of hierarchy, bright colors, but there are relatively high power consumption and costs less. TFT LCD technology to accelerate the development of mobile phone color screens.

Use and Maintenance lcd module

Use and Maintenance lcd module
1. When using an access lcd module and disconnect the power supply must be (5 ± 0.25V) to the input signal level at the positive.
2. The dot matrix modules are high large ones lcd display a great contrast, viewing angle and temperature, drive voltage relationship.
3. When the specified operating temperature range limit use, displays the response is very slow. In the specified operating temperature range of the upper limit using the entire display surface becomes black, this is not damaged, the recovery temperature range, can return to normal.
4. Firmly press the display section, will produce abnormal display, just turn off the power, re-access can be restored.
5. The liquid crystal display device or module surface fogging, do not power work, because then the electrode from a chemical reaction, producing breakage.
6. Long-term cover for being the site will produce residual images when the sun and bright light.

LCD display

The number of modules LCD display LCD module is the most common, which is assembled from a segment type liquid crystal display device with a dedicated integrated into one functional unit can only display a number of identification numbers and symbols. Segment type lcd modules are mostly used in the portable, pocket-sized devices, as these devices are small, so as not to show part of the design into separate parts.

LCD module classification

LCD module has three types: character LCD module is a module with a Chinese font, font can be displayed in any of the characters; graphic lcd display module are arranged in a desired pattern by dot matrix symbol, of course, also possible to form text characters, letters, etc. as a graphic editor, but it needed to be bigger microcontroller space; field type LCD module LCD screen in a fixed number of characters, such products are generally used for fixed devices, such as telephones, electronic watches, vcd display section.

OLED application

OLED display module technology has a self-luminous display module characteristics, using a very thin coating of organic materials and glass substrates, when a current is passed, these organic materials will be light, and OLED display viewing angle, and can save energy, from 2003 began this display device in the MP3 player has been applied. OLED organic light-emitting material used, the one with dye and pigment material is a small molecule device system, and the other places conjugated polymer is a polymer material, the device system.

Backlight Profile

The so-called backlight is a light source located in a liquid crystal display (LCD) behind the LCD panel to provide a light source, it will directly affect the glow LCD module (LCM) visual effects. LCD itself is not light, it displays graphics or character is its light modulation results. With the continuous development of LCD technology, liquid crystal display applications especially color liquid crystal displays are continuously expanding.

Graphic lcd modules

OLED display module is 128, 64 lines structure. Figure 2 is a block diagram of SSD1303, shows a block diagram of the logic modules and the interface circuit. Users only need to give the interface provides power to generate drive command signal and display data signals can light OLED screen. As can be seen from the figure, the line, the column Character LCD Display drivers to output through the FPC bonding OLED screen, the rest of the MCU interface, voltage and current needs of the interface controller and Graphic lcd modules the drive circuit is designed, the external signal module only SSD1303 a relationship. So understand SSD1303 input characteristics and command system, you can easily use this module it.

Solomon Systech SSD1303 is introduced monochrome OLED driver's IC, using the TAB package. This CMOS-based driver IC integrates a row, column drivers, oscillator, contrast, memory Graphic lcd modules controller and graphics data (GDDRAM), greatly reduce the peripheral devices and power consumption. Maximum resolution supported is 132 × 64, wherein the dot area at the bottom of the OLED display 132 × 16 4 to display colors local color, and is programmable to achieve 64 gray when used for monochrome display, programmable contrast control 256. Depending on the use of a microprocessor (MPU) is different, it offers 8 6800 series MPU parallel, 8 8080 series MPU Parallel and Serial Peripheral InteRFace (SPI) serial