High-resolution OLED oled modules emission tomography using laser transfer technology

The laser induced thermal imaging (LITI) method is the use of a donor film, to be completed by a group of high-precision laser exposure system and a pair of substrates. The laser imaging system provided by the lasers, light regulator, calibration and beam expander optical assembly, attenuator, the galvanometer and f-theta scan lens.low temperature lcd display
The LITI process described as follows: First, the thermal transfer donor pressure on a substrate, the donor and the receptor surface must be brought into close contact. Then, the laser beam exposing the donor imaging template image pattern from contact with the donor-oriented transport layer (light emitting material) release, and attached to the contact surface in the transport layer of the receptor. Finally, will be used for peeling, so that the exposure area of ​​the high resolution stripe is transferred. In order to form a full-color display, the order of red, green and blue, three kinds of donor film.
The LITI transfer is a unique advantage of the laser addressing high-resolution graphics processing method, for example, the thickness of the transfer film is extremely uniform, the multilayer transfer capabilities and scalability of large-size motherboard glass.
Since this is a dry process, so LITI transfer from the transfer layer soluble substance. Thus, we are able to introduce the solution of soluble liner, a hole transport layer, and improve the performance of the OLED. The LITI imaging method provides an excellent thickness uniformity straight, smooth and uniform image forming stripes. The light-emitting material by spin coating, screen coating, or vacuum sputtering method is applied to the donor film above. LITI imaging accuracy better than ± 2.5 m, this exceptional precision LITI transfer technology a distinct advantage. Adopt LITI technologies able to get more than 200ppi high-resolution image. This is a remarkable performance characteristics as compared with the conventional precision mask plate method (the maximum resolution of 150ppi).Coding System lcd module