Display unit and its manufacturing method
View Patent ↗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.
1. A display unit, comprising:
a display panel comprising (a) a display panel substrate, (b) organic light emitting devices on the display panel substrate, and (c) a protective film directly on and around the organic light emitting devices, the protective film sealing the organic light emitting devices;
a flexible touch sensing panel that can detect contact thereon by a suitable contact element and comprising a plastic film;
a sealing panel comprising a sealing substrate;
a first adhesive layer securing the flexible touch sensing panel to the sealing panel; and
a second adhesive layer securing the sealing panel to the display panel, wherein,
the protective film comprises silicon oxide, silicon nitride, or both and is configured to prevent intrusion of moisture or oxygen, the first adhesive layer extends across a first whole face of the sealing panel and directly contacts both the sealing panel and the flexible touch sensing panel,
the second adhesive layer extends across and directly contacts the protective film and a second face of the sealing panel,
the organic light emitting devices are configured to emit light through the touch sensing panel, and
at least one of the organic light emitting devices has a resonator structure and includes (i) an anode electrode, (ii) a cathode electrode, and (iii) an organic light emitting layer disposed between the anode electrode and the cathode electrode, light generated in the light emitting layer being resonated between the anode electrode and the cathode electrode and being emitted from the anode electrode or the cathode electrode.
2. The display unit of claim 1 , wherein the touch sensing panel includes a transparent electrode.
3. The display unit according to claim 2 , wherein the touch sensing panel includes a second plastic film which carries a second transparent electrode.
4. The display unit of claim 1 , wherein each organic light emitting device is an organic light emitting diode with an anode electrode having a thickness from 100 nm to 300 nm, both inclusive.
5. The display unit of claim 4 , wherein each organic light emitting diode has a cathode electrode with a thickness from 1 nm to 50 nm, both inclusive.
6. The display unit of claim 1 , wherein:
the anode electrode includes silver; and
the cathode electrode includes an alloy made of magnesium and silver.
7. The display unit of claim 1 , wherein the touch sensing panel plastic film carries a transparent electrode.
8. The display unit of claim 1 , wherein the protective layer is made of silicon oxide.
9. The display unit of claim 1 , wherein the protective layer is made of silicon nitride.
10. The display unit of claim 1 , wherein one of the anode electrode or the cathode is a reflective layer and the other of the anode electrode or the cathode electrode is a semitransparent layer.
11. A display unit, comprising:
a display panel comprising (a) a display panel substrate, (b) organic light emitting devices on the display panel substrate, and (c) a protective film directly on and around the organic light emitting devices and sealing the plurality of organic light emitting devices;
a flexible touch sensing panel that can detect contact thereon by a suitable contact element and comprising a plastic film; and
an adhesive layer securing the flexible touch sensing panel to the display panel,
wherein,
the light emitting devices are sealed by the protective film,
the protective film provides a planar surface across a whole face of the display panel,
the protective film comprises silicon oxide, silicon nitride, or both and is configured to prevent intrusion of moisture and oxygen,
the adhesive layer extends across and directly contacts the planar surface of the protective film and a face of the flexible touch sensing panel,
the plurality of organic light emitting devices are configured to emit light through the touch sensing panel, and
at least one of the display devices has a resonator structure and includes (i) an anode electrode, (ii) a cathode electrode, and (iii) an organic light emitting layer disposed between the anode electrode and the cathode electrode, light generated in the light emitting layer being resonated between the anode electrode and the cathode electrode and being emitted from the anode electrode or the cathode electrode.
12. The display unit of claim 11 , wherein the touch sensing panel includes a transparent electrode.
13. The display unit according to claim 12 , wherein the touch sensing panel includes a second plastic film which carries a second transparent electrode.
14. The display unit of claim 11 , wherein each organic light emitting device is an organic light emitting diode with an anode electrode having a thickness from 100 nm to 300 nm, both inclusive.
15. The display unit of claim 14 , wherein each organic light emitting diode has a cathode electrode with a thickness from 1 nm to 50 nm, both inclusive.
16. The display unit according to claim 14 , wherein the touch sensing panel plastic film carries a transparent electrode.
17. The display unit of claim 11 , wherein:
the anode electrode includes silver; and
the cathode electrode includes an alloy made of magnesium and silver.
18. The display unit of claim 11 , wherein the protective layer is made of silicon oxide.
19. The display unit of claim 11 , wherein the protective layer is made of silicon nitride.
20. The display unit of claim 11 , wherein one of the anode electrode or the cathode is a reflective layer and the other of the anode electrode or the cathode electrode is a semitransparent layer.