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 method of manufacturing a display unit, comprising:
providing a display panel including (a) a substrate with display devices, the display devices being organic light emitting devices, (b) a protective film in contact with the substrate and the organic light emitting devices, (c) a first adhesive layer on the protective film, and (d) a sealing panel with a sealing substrate directly on both of (i) at least one color filter, and (ii) the first adhesive layer;
forming a second adhesive layer across a surface of the display panel;
attaching a touch panel to a touch panel holding unit, the touch panel configured to enable detection of a touch on a surface thereof;
positioning the touch panel holding unit at an angle relative to the display panel;
positioning one side of the touch panel onto the second adhesive layer on the display panel; and
securing the touch panel onto the second adhesive layer by moving a roller such that the touch panel is pressed against the display panel by pressure force, and moving the touch panel holding unit relative to the display panel in synchronization with the roller and allowing the touch panel to slide off of the touch panel holding unit,
wherein,
the second adhesive layer is between the protective film and the touch panel.
2. The method of manufacturing a display unit according to claim 1 , wherein the touch panel is provided on a side of the substrate in which the display devices of the substrate are formed, and the display devices are between the touch panel and the substrate.
3. The method of manufacturing a display unit according to claim 1 , wherein the touch panel has a structure in which two plastic films with respective transparent electrodes are layered so that the transparent electrodes are placed opposite to each other.
4. The method of manufacturing a display unit according to claim 1 , wherein the sealing substrate is placed opposite to a side of the display devices of the substrate, and whole faces of the substrate and the sealing substrate are bonded together with the first adhesive layer therebetween during the process of forming the display panel.
5. The method of manufacturing a display unit according to claim 4 , wherein the touch panel is provided on the sealing substrate on a side opposite to the substrate.
6. The method of manufacturing a display unit according to claim 1 , wherein each of the organic light emitting devices has an organic layer including a light emitting layer, and extracts light generated in the light emitting layer from a second electrode side, the light emitting layer being formed between a first electrode and a second electrode.