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

Graphic lcd modules

 interface connection in two ways: one is the direct access mode, the other is indirect access. Either way, you want to access the module must first read the Serial display modules  contents of the status register to determine the "busy" flag can be accessed when COG LCD Display  Graphic lcd modules not busy. Direct access method is a module interface as a memory or  devices directly linked to the MCU bus,to access memory or I / O device mode the module operation. Indirect access MCU module is operated via software simulation control timing.
Write instructions on the display module and write data write operation into the left screen and write the right screen. The difference Graphic lcd modules between writing about half the screen is only set corresponding chip select signals, and the difference between writing instruction and writing data when the write data is set RS Graphic lcd modules register select signal. Initialization operation is completed and opened to determine the display position of the display.

Interface design and software TFT LCD Display  programming described above has been successfully applied to the data acquisition system operating parameters of the display system to good effect; coupled with significant anti-button control, parameter setting, flip, the establishment of a good man-machine interface.

Character LCD Modules

plant after a period of adjustment in production yield significantly improved panels,begin shipping late last year to iPad mini, Innolux also won the Amazon Kindle Fire orders. Supply Chain estimate, Innolux January flat panel computer shipments of about 150 to 2,000,000, about 7 to 8 percent market share.
       Astechnology is still Lcd module in the development stage with customers, this year will be a small amount of production, the relevant capacity provisioning is the sixth generation in Chunan plant-based. The AMOLED panel is still sending samples OLED Display which will start with smart phone application starts. OLED panels currently in Chunan trial production of 3.5-generation plant, the fastest volume production expected in the second quarter, as large-size OLED applications, at this stage there is no specific plan.

       As for the development Character LCD Modules of new technologies, including Chunan of a 5-generation plants and Tainan two 5th generation plant has capacity to work as part of the IPS panel, estimated that the IPS panel production capacity increase of about 25%, mainly in order to make the layout of tablet computers .

Serial display modules

Character LCD Module is type thin film transistor liquid crystal display, which is "truecolor" (TFT). TFT LCD for each pixel has a semiconductor switch, each pixel can through the point of pulse directly control, which are relatively independent, each node and can be continuous control, not only improves the display speed, and can precisely control levels, TFT LCD color so more true. TFT LCD display screen is the feature of good brightness, high contrast, administrative levels feels strong, bright color, but there are also more power consumption and high cost.

TFT (Thin Film Transistor) Thin Film field effect Transistor, namely belongs to one of the active matrix liquid crystal display. It can be "active" to control of individual pixels on the screen, this can greatly improve the reaction time. General TFT relatively fast response time, about 80 milliseconds, and large visual Angle, generally can reach 130 degrees.
TFT LCD polarity reversal mode:
The driving voltage of liquid crystal molecules cannot be fixed at a certain values, otherwise, time is long, the Serial display modules polarization phenomenon will happen, so as to gradually lose their optical properties. Therefore, in order to avoid damage to the characteristics of the liquid crystal molecules of the liquid crystal molecules, the driving voltage polarity transformation must be conducted, it is need to display the voltage to the liquid crystal display is divided into two kinds of polarity, one is normal polarity, the other is a negative polarity.

COG LCD Display

Then how to use control, through theof 13 Interface Control SSD1303 driver thereby controlling the OLED display.  is the chip select signal, then low when to communicate with the driver is reset enable end, when the then low, all control registers are set to the factory default state, while image register is cleared; for the data  command 20x4 lcd select signal;  respectively write and read select signal when  is low, effective in its falling edge read and write. By changing the   three interface level, single-chip control of OLED has four states, can be displayed in Table 1.
read and write timing

Just follow VGG12864G timing waveforms to read and write, to complete the OLED display. However, the fight sequence through software programming, a lot of time to take into account the parameters, there is a certain degree of difficulty. To make it easier for data and commands to write smoothly, we take a different approach. Shown in Figure 1, the  and respectively, then the and  namely P0.7 and P0.6. When you define a pointer COG LCD Display type xdata type in the C programming language, which is pointing to off-chip memory through a pointer to an assignment outside access off-chip data storage area when accessing off-chip memory,  and will read and write automatically becomes low, while P3 port for the data bus, a non-multiplexed mode, the high use of the address bus 8 port P1, P2 port using low 8; under way multiplexed address bus high eight still using P1 port, low 8 and multiplexed data bus port P3, P2 port will not be affected. So the best way to set multiplexing (EMIOCF.4 = 0), P2 port can be used unless the output port, the freedom to control the Although no address bus, but when accessing off-chip memory address lines are used, so still avoid. The results of the timing waveform diagram shown in Figure 3. As long as  is low, the falling edge of  write (read) data or commands to read and write effectively complete the work.