Stretchable display
A display may have a stretchable portion with hermetically sealed rigid pixel islands. A flexible interconnect region may be interposed between the hermetically sealed rigid pixel islands. The hermetically sealed rigid pixel islands may include organic light-emitting diode (OLED) pixels. A conductive cutting structure may have an undercut that causes a discontinuity in a conductive OLED layer to mitigate lateral leakage. The conductive cutting structure may also be electrically connected to a cathode for the OLED pixels and provide a cathode voltage to the cathode. First and second inorganic passivation layers may be formed over the OLED pixels. Multiple discrete portions of an organic inkjet printed layer may be interposed between the first and second inorganic passivation layers.
1 . A display comprising:
a first organic light-emitting diode pixel comprising a first electrode;
a second organic light-emitting diode pixel comprising a second electrode;
a common electrode for the first and second organic light-emitting diode pixels;
a conductive layer that has a first portion that forms part of the first organic light-emitting diode pixel and a second portion that forms part of the second organic light-emitting diode pixel; and
a conductive structure that is interposed between the first and second electrodes, wherein the conductive structure has an undercut that causes a discontinuity in the conductive layer and wherein the conductive structure is electrically connected to the common electrode.
2 . The display defined in claim 1 , wherein the first electrode is a first anode, wherein the second electrode is a second anode, and wherein the common electrode is a cathode.
3 . The display defined in claim 2 , wherein the conductive layer is a hole injection layer.
4 . The display defined in claim 1 , further comprising:
a first inorganic passivation layer that is formed over the common electrode.
5 . The display defined in claim 4 , further comprising:
a second inorganic passivation layer that is formed over the first inorganic passivation layer.
6 . The display defined in claim 5 , further comprising:
an organic layer with multiple discrete portions between the first and second inorganic passivation layers.
7 . The display defined in claim 6 , wherein the organic layer is an inkjet printed layer.
8 . The display defined in claim 6 , further comprising:
an encapsulation layer that is formed over the second inorganic passivation layer.
9 . The display defined in claim 8 , further comprising:
an inorganic layer that is formed over the encapsulation layer.
10 . The display defined in claim 9 , further comprising:
a touch sensor metal layer that is formed on the inorganic layer and that overlaps the undercut of the conductive structure.
11 . The display defined in claim 10 , further comprising:
a black pixel definition layer that is formed over the inorganic layer and the touch sensor metal layer, wherein the black pixel definition layer has apertures; and
color filter elements formed in the apertures.
12 . The display defined in claim 1 , further comprising:
an insulating layer, wherein the first and second electrodes are formed on the insulating layer; and
a layer of shielding metal, wherein the insulating layer is interposed between the first electrode and the layer of shielding metal.
13 . The display defined in claim 1 , further comprising:
a plurality of rigid pixel islands, wherein a first rigid pixel island of the plurality of rigid pixel islands includes the first and second organic light-emitting diode pixels; and
a flexible interconnect region that is interposed between the plurality of rigid pixel islands.
14 . The display defined in claim 13 , wherein the flexible interconnect region comprises a flexible polymer layer and serpentine conductive signal lines.
15 . A display comprising:
a plurality of pixels, wherein each pixel has a respective anode;
a common cathode for the plurality of pixels;
organic light-emitting diode layers for the plurality of pixels that are interposed between the anodes and the common cathode;
a first inorganic passivation layer that is formed over the common cathode;
a second inorganic passivation layer that is formed over the first inorganic passivation layer; and
an organic layer with multiple discrete portions between the first and second inorganic passivation layers, wherein no portions of the organic layer are included between the first and second inorganic passivation layers in some portions of the first and second inorganic passivation layers.
16 . The display defined in claim 15 , wherein the plurality of pixels is hermetically sealed by at least the first and second inorganic passivation layers.
17 . The display defined in claim 15 , wherein at least one of the multiple discrete portions of the organic layer is formed underneath a particle.
18 . The display defined in claim 15 , further comprising:
a touch inorganic layer that covers side surfaces of the organic light-emitting diode layers, the common cathode, the first inorganic passivation layer, and the second inorganic passivation layer.
19 . The display defined in claim 15 , further comprising:
a substrate, wherein the plurality of pixels are formed on the substrate; and
a cathode dewetting layer at an edge of the substrate.
20 . A display comprising:
a plurality of hermetically sealed rigid pixel islands; and
a flexible interconnect region that is interposed between the plurality of hermetically sealed rigid pixel islands, wherein each hermetically sealed rigid pixel island comprises:
at least one organic light-emitting diode pixel with organic light-emitting diode layers interposed between first and second electrodes; and
a conductive cutting structure that causes a discontinuity in one of the organic light-emitting diode layers and that is electrically connected to the second electrode.
21 . The display defined in claim 20 , wherein each hermetically sealed rigid pixel island further comprises:
a first inorganic passivation layer that is formed over the second electrode;
a second inorganic passivation layer that is formed over the first inorganic passivation layer; and
an organic inkjet printed layer with multiple discrete portions between the first and second inorganic passivation layers.
22 . The display defined in claim 20 , wherein the plurality of hermetically sealed rigid pixel islands is formed on a flexible polymer layer and wherein the flexible interconnect region comprises signal lines on the flexible polymer layer.