Character LCD Modules device structure outlined

The basic structure of the OLED display device structure can be divided into single, double device structure, the device structure and multi-layer structures, and other devices. lcm module
Single layer structure between the positive and negative poles of the device contains only one organic light emitting layer, such a structure used in the doped type OLED. The poor performance of the device structure, Since both carriers into imbalance, so the composite probability is small, the light emitting efficiency is low; the thickness of the organic film device, the driving voltage is high.
In the two-layer structure device, since most of the organic material is not very nature, a hole with transmission with transmission electronic in nature, but also has equal hole and electron transport properties of the organic material is minimal. In order to effectively solve the electron and hole recombination zone away from the electrodes and the equilibrium carrier injection efficiency problems and improve the luminous efficiency of the OLED using the double-layer structure. The device layer structure effectively balanced injection of holes and electrons, improving the injection rate of carriers and light emission efficiency and quantum efficiency of the device.
The device layer structure consisting of a hole transport layer (HTL), an electron transport layer (ETL) and a light emitting layer (EML) components. In this structure, the three functional layers of his functions, allowing the device to optimize the performance, which is a standard device structure.
To reduce the drive voltage, increase the contrast, increases the quantum efficiency and the use of a multilayer structure emission luminance. OLED multilayer structure not only ensures the functional layer with good adhesion between the glass, but also from the anode and cathode such that the carriers more easily injected into the organic functional film. However, the multilayer structure to improve device performance, it would also bring to the complex interface between the layers effect. lcd module