The Technology Research Association for Advanced Display Materials (TRADIM) made a TFT LCD panel with a roll-to-roll method using a TFT array and a color filter formed on film substrates.

The panel was made from a 3.5-inch amorphous Si-TFT and a color filter formed on 300 (W) x 50m (L) film substrates.
This technique enabled to produce all the LCD panel components other than oriented film and liquid crystal material by the roll-to-roll method. The LCD panel announced this time used such film substrates and was assembled by the roll-to-roll method.

The roll-to-roll assembly process of a TFT LCD panel consists of the following procedures. Materials are coated and bonded on a film substrate that isn't moving, using four panels as one set. Two rolled film substrates, one with a TFT and the other with a color filter, are set on the roll-to-roll assembly equipment.

The new technology was developed in the "Super Flexible Display Parts Technology Development Project" of the New Energy and Industrial Technology Development Organization (NEDO).
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The film that constitutes the TFT LCD panel is 300mm wide and 50m long