Display unit and its manufacturing method
View Patent ↗The invention provides a display unit which can realize reduction in thickness and weight of the display unit by omitting a void between a touch panel and a display panel, and its manufacturing method. Whole faces of the touch panel and the display panel are directly bonded together with an adhesive layer in between. The display panel has a structure wherein a driving substrate in which organic light emitting devices are formed and a sealing substrate are bonded together with an adhesive layer in between. The touch panel has a structure wherein a lower plastic film in which a transparent electrode is formed and a touch-side plastic film in which a transparent electrode is formed are layered so that the transparent electrodes are placed opposite. The display panel is constructed with only the driving substrate, and the organic light emitting devices are sealed by the touch panel instead of the sealing substrate. Therefore, thickness and weight of the display unit can be further reduced.
1. A display unit, comprising:
a display panel including a substrate on which a plurality of display devices are formed, and a protective film formed directly on both (a) the substrate and (b) the plurality of display devices, for protecting the plurality of display devices; and
a flexible touch panel which (a) is composed of plastic films, (b) has a whole face that is directly bonded to a whole face of the display panel with a first adhesive layer in between, and (c) detects contact with a suitable contact element thereon,
wherein,
the entire face of the display panel includes a sealing panel formed directly on (a) a second adhesive layer and (b) at least one filter,
the first adhesive layer is in direct contact with both the sealing panel and one of the plastic films of the flexible touch panel, each of the plurality of the display devices has an organic emitting layer made of an organic electro luminescence material,
the protective film seals the plurality of display devices from the flexible touch panel,
the plurality of display devices are isolated from the flexible touch panel, and
the at least one filter includes red, green, and blue color filters on the second adhesive layer.
2. The display unit according to claim 1 , wherein the touch panel that is composed of plastic films includes two plastic films, in which respective transparent electrodes are formed, that are layered such that the transparent electrodes are placed opposite to each other.
3. The display unit according to claim 1 , wherein each
organic emitting layer includes a light emitting layer between a first electrode and a second electrode, and the respective display device is an organic light emitting device which extracts the lights generated in the light emitting layer from the second electrode side.
4. The display unit according to claim 1 , wherein the suitable contact element is a finger or a pen.
5. A display panel comprising:
a driving panel having a substrate with a plurality of display devices thereon and a protective film formed directly on both (a) the substrate and (b) the plurality of display devices;
a flexible touch panel which (a) is composed of plastic films and (b) detects contact with a suitable contact element thereon; and
a sealing panel between the driving panel, and the flexible touch panel that is formed directly on (a) a second adhesive layer and (b) at least one filter,
wherein,
a whole face of the driving panel and a whole face of the sealing panel are secured together by means of a first adhesive layer,
a whole face of the flexible touch panel and a whole face of the sealing panel are secured together by means of the second adhesive layer,
the protective film is effective to isolate the plurality of display devices from moisture,
each of the plurality of display devices has an organic emitting layer,
the sealing panel has a layer effective to isolate the plurality of display devices from the flexible touch panel, and
the at least one filter includes red, green, and blue color filters on the second adhesive layer.