The capacitance-type Touch Screen which was generally materialized before was embodied with the form of the product which conducts only the touch sensing function independently from the display. Lately, along with the development of the display integrated touch product and the appearance of the single-chip of the all kinds of the functions, Touch Display Driver IC(Touch Display Driver Integration, TDDI) was developed which combines the touch sensing function and the display driving function into single chip.

As the display driving and the touch sensing function are operated at the same time with the one TDDI chip, the noise performance can be improved since the noise information can be controlled which is occurred from the display. Also, it is mounted on TFT using COG(chip-on-glass) technology such as the Standard DDI, the chip-mounted area that is required for the FPC (flexible printed circuit) is reduced and it can help the production cost be reduced by the decrease of the process related to this and the increase of the yield rate.

Especially, in case of the In-cell display products, as the touch sensing electrode pattern is realized as the all-in-one inside the display, TDDI chip provides the optimal architecture to this product. Through this, the production of more slim display module is feasible, and there is also a strong point in the aspect of the power consumption since it can embody a 10% brighter screen than the display that the Touch Screen is added previously.
To materialize the product, the touch sensing technology, display driving technology, operation technology of the display-driving synchronization, high speed MIPI Interface technology, noise reduction technology, low-power consumption design technology, and etc. are necessary.