Display unit, method of manufacturing display unit, and electronic apparatus
View Patent ↗A display unit includes: a first substrate including a plurality of light-emission devices in a display region, the plurality of light-emission devices each including an organic layer between a first electrode and a second electrode; a second substrate disposed to face the first substrate with the light-emission devices interposed therebetween; a first peripheral electrode provided on the second substrate and positioned outside the display region; a first wiring provided on the second substrate and configured to be electrically connected to the first peripheral electrode; and a first connection section configured to electrically connect the first wiring and each of the light-emission devices.
1. A display unit comprising:
a first substrate including a plurality of light-emission devices in a display region, the plurality of light-emission devices each including an organic layer between a first electrode and a second electrode;
a second substrate disposed to face the first substrate with the light-emission devices interposed therebetween;
a first peripheral electrode provided on the second substrate and positioned outside the display region;
a first wiring provided on the second substrate and configured to be electrically connected to the first peripheral electrode; and
a first connection section provided on the second electrode and configured to electrically connect the first wiring and the light-emission devices,
wherein the first connection section is provided in the display region.
2. The display unit according to claim 1 , wherein the second electrode is provided between the organic layer and the second substrate to be common to the plurality of light-emission devices, and is electrically connected to the first connection section.
3. The display unit according to claim 2 , wherein one or more layers serving as the organic layer are provided to be common to the plurality of light-emission devices.
4. The display unit according to claim 2 , wherein
the organic layer includes a light emitting layer, and
one or more layers serving as the light emitting layer are provided to be common to the plurality of light-emission devices.
5. The display unit according to claim 1 , further comprising:
a second peripheral electrode provided on the second substrate and positioned outside the display region;
a second wiring provided on the second substrate and configured to be electrically connected to the second peripheral electrode; and
a second connection section configured to electrically connect the second wiring to each of the light-emission devices.
6. The display unit according to claim 5 , wherein
the second peripheral electrode is electrically connected to a control section configured to transmit a drive signal to each of the light-emission devices, and
the first electrode is provided between the organic layer and the first substrate for each of the light-emission devices, and is electrically connected to the second connection section.
7. The display unit according to claim 6 , wherein the second connection section includes a conductor and an anisotropic conductive film, the conductor being provided outside the display region of the first substrate, and the anisotropic conductive film being provided between the conductor and the second wiring.
8. The display unit according to claim 6 , wherein the first electrode is electrically connected to the second connection section through a TFT provided on the first substrate.
9. The display unit according to claim 1 , wherein light from the light emitting layer is extracted from the second substrate side.
10. The display unit according to claim 1 , wherein the first connection section is provided in a non-light emission region between the light-emission devices next to each other.
11. The display unit according to claim 10 , wherein
the second substrate includes a plurality of color filters allowing light rays in wavelengths different from one another to pass therethrough, and
in the first connection section, a projection section formed of the plurality of color filters allows the first wiring to be electrically connected to the light-emission devices.
12. The display unit according to claim 10 , wherein
an insulating film is provided between the light-emission devices next to each other, and the second electrode is extended on the insulating film, and
in the first connection section, the insulating film and the first wiring are in contact with each other with the second electrode interposed therebetween.
13. The display unit according to claim 1 , wherein the first connection section is configured of an electrically-conductive pillar.
14. The display unit according to claim 1 , wherein the first connection section is configured of an electrically-conductive ball.
15. The display unit according to claim 1 , wherein the first connection section is configured of electrically-conductive resin between the second electrode and the second substrate.
16. The display unit according to claim 1 , further comprising a high-resistive layer provided between the organic layer and the second electrode.
17. The display unit according to claim 16 , wherein the high-resistive layer has an electric resistance higher than each of the first electrode and the second electrode.
18. The display unit according to claim 17 , wherein the high-resistive layer is configured to prevent occurrence of a short circuit between the first electrode and the second electrode.
19. The display unit according to claim 18 , wherein the high-resistive layer includes at least one of niobium oxide, titanium oxide, molybdenum oxide, tantalum oxide, hafnium oxide, magnesium oxide, IGZO, a mixture of niobium oxide and titanium oxide, a mixture of titanium oxide and zinc oxide and a mixture of a silicon oxide and tin oxide.
20. An electronic apparatus comprising
a display unit including,
a first substrate including a plurality of light-emission devices in a display region, the plurality of light-emission devices each including an organic layer between a first electrode and a second electrode,
a second substrate disposed to face the first substrate with the light-emission devices interposed therebetween,
a first peripheral electrode provided on the second substrate and positioned outside the display region,
a first wiring provided on the second substrate and configured to be electrically connected to the first peripheral electrode, and
a first connection section provided on the second electrode and configured to electrically connect the first wiring and the light-emission devices,
wherein the first connection section is provided in the display region.
21. A method of manufacturing a display unit, the method comprising:
forming a plurality of light-emission devices in a display region on a first substrate, the plurality of light-emission devices each including an organic layer between a first electrode and a second electrode;
forming a first wiring and a first peripheral electrode on a second substrate, the first peripheral electrode being provided outside the display region and being electrically connected to the first wiring; and
disposing the second substrate to face the first substrate with the light-emission devices interposed therebetween, and electrically connecting the first wiring to each of the light-emission devices through a first connection section provided on the second electrode,
wherein the first connection section is provided in the display region.
22. The method according to claim 21 , wherein
after a second peripheral electrode is formed outside the display region of the first substrate, the second peripheral electrode is covered with a protective film, and
after the light-emission devices are formed, the protective film is removed, and the second peripheral electrode is electrically connected to a control section configured to transmit a signal to each of the light-emission devices.
23. The method according to claim 21 , wherein
after a conductor is formed outside the display region of the first substrate, the conductor is covered with a protective film,
after the light-emission devices are formed, the protective film is removed,
a second peripheral electrode is formed on the second substrate to be positioned outside the display region, and
the conductor is electrically connected to a control section configured to transmit a signal to each of the light-emission devices through the second peripheral electrode.