What is In-cell and On-cell touch panel TFT Display Module

With respect to the touch panel settings on the LCD panel used in the original study of the increasing popularity of the integration of the touch panel function LCD panel. The integration of the touch panel and the liquid crystal panel including the In-cell "method and the" On-cell method. In-cell refers to a method to embed the touch panel function to the liquid crystal pixels. On-cell refers to a method to embed the touch panel function to between the color filter substrate and a polarizing plate.lcm module
Original external touch panel member can achieve the integration of the liquid crystal panel, there may be thin and lightweight panel. In addition, in the original embodiment will be placed outside the touch panel liquid crystal, existence of a physical space between the LCD and the touch panel, therefore, will be reflected at the liquid crystal panel and a touch panel below between external light, resulting in an outdoor bright reduce the visibility of the environment. If the external touch panel member can achieve integration, can be suppressed to reduce the phenomenon in outdoor visibility.
In-cell technology proposals previously put forward, but the yield and display performance is difficult to ensure practical inability to make progress. The reason is that the pixels on the TFT array substrate embedded within the touch sensor function. To do this, you must use the complex semiconductor manufacturing process, which became a stumbling block to improve the yield. In addition, the touch sensor is embedded within the pixel, the available display area portion will be reduced, which in turn is the main cause of image degradation.
However, with the appearance of the On-cell technology, the LCD and touch panel integration ushered in a turning point. Because only a simple transparent electrode pattern is formed between the color filter substrate and the polarizing plate, it is easy to ensure that the yield. Further, a pixel area of ​​the effective display area is not reduced, almost no quality deterioration phenomenon occurs thereby.lcd modules
On-cell mode LCD integrated technology proliferates, you no longer need to use the external touch panel member. Manufacture of touch panel manufacturers is likely to transition from the external touch panel makers as the LCD panel and color filter makers. Product manufacturers from the touch panel makers in the hands of the original procurement of external components supply chain will also be changed completely.