Flexible display and manufacturing method thereof
AssigneesKyodo Printing Co., Ltd., Nippon Hoso Kyokai
InventorsTadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
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Abstract
A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
Claims21
An active matrix flexible display in which a TFT is provided for each pixel, comprising:
- a plastic film;
- an adhesive layer formed on the plastic film;
- a protective layer formed on the adhesive layer;
- a gate electrode for the TFT, which is buried in the protective layer so that the gate electrode is in direct contact with the protective layer and is in a state such that an upper surface portion of the gate electrode and an upper surface portion of the protective layer are arranged at an identical height position relative to the plastic film and constitute an identical surface, wherein the protective layer is located between a lower surface portion of the gate electrode and the adhesive layer and wherein the upper surface portion of the gate electrode and the upper surface portion of the protective layer face away from the plastic film and the adhesive layer;
- a gate insulating layer for the TFT, which covers the gate electrode and contacts the gate electrode only at the upper surface portion of the gate electrode;
- source and drain electrodes for the TFT, which are formed on the gate insulating layer and disposed at predetermined intervals on the gate electrode;
- a pixel electrode which is formed on the gate insulating layer and is electrically connected to the drain electrode;
- an organic active layer for the TFT, which is formed on a space between the source and drain electrodes and is electrically connected to the source and drain electrodes;
- an organic EL layer, which includes an emitting layer, formed on the pixel electrode of each pixel;
- a metal electrode formed on the organic EL layer;
- and
- a sealing layer which covers the metal electrode.
An active matrix flexible display in which a TFT is provided for each pixel, comprising:
- a plastic film;
- an adhesive layer formed on and directly in contact with the plastic film;
- a barrier insulating layer formed on and directly in contact with the adhesive layer;
- a TFT which is formed on or above the barrier insulating layer and has a structure in which an organic active layer, a gate insulating layer arranged on and above the organic active layer and a gate electrode arranged on the gate insulating layer are formed, and source and drain electrodes are electrically connected to the organic active layer, in which the gate electrode is buried in the gate insulating layer so that the gate electrode is in direct contact with the gate insulating layer and is in a state that an upper surface portion of the gate electrode and an upper surface portion of the gate insulating layer are arranged at an identical height position relative to the plastic film and constitute an identical surface, wherein the gate insulating layer is present between a lower surface portion of the gate electrode and the organic active layer, and wherein the upper surface portion of the gate electrode and the upper surface portion of the gate insulating layer face away from the plastic film and the adhesive layer;
- a pixel electrode which is formed above the barrier insulating layer and is electrically connected to the drain electrode of the TFT;
- an organic EL layer including an emitting layer formed on the pixel electrode of each pixel;
- a metal electrode formed on the organic EL layer;
- and
- a sealing layer which covers the metal electrode.
Dependencies are inferred from the claim text.