Display device using micro light emitting diode
AssigneeSamsung Display Co., Ltd.
InventorsMinsoo Kim, Mugyeom Kim
Life of this patent
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Abstract
A display device includes a display substrate; a thin film transistor over the display substrate; a bank layer covering the thin film transistor, where an opening is defined through the bank layer; an emission layer in the opening and including a micro p-n diode; a first electrode electrically connected between the thin film transistor and the emission layer; a second electrode over the emission layer; and a sealing layer covering the second electrode. The thin film transistor and the emission layer are adjacent to each other in a horizontal direction of the display substrate.
Claims18
A display device comprising:
- a display substrate;
- a thin film transistor over the display substrate, wherein the thin film transistor comprises a semiconductor active layer, a gate electrode, a source electrode, and a drain electrode;
- a bank layer covering the thin film transistor, wherein an upper surface of the bank layer is substantially planar, an opening is defined through the bank layer, and the opening is spaced apart from the semiconductor active layer of the thin film transistor when viewed from a plan view in a vertical direction of the display substrate;
- an emission layer in the opening, wherein the emission layer comprises a micro p-n diode;
- a first electrode electrically connected between the thin film transistor and the emission layer;
- a second electrode over the emission layer and arranged to overlap the first electrode when viewed from the plan view in the vertical direction of the display substrate;
- a mirror layer over the bank layer, wherein the mirror layer is arranged to overlap the thin film transistor when viewed from the plan view in the vertical direction of the display substrate, and wherein the mirror layer comprises a reflective material;
- and
- a sealing layer covering the second electrode,
- wherein the thin film transistor and the emission layer are adjacent to each other in a horizontal direction of the display substrate.
A display device comprising:
- a display substrate;
- a thin film transistor over the display substrate, wherein the thin film transistor comprises a semiconductor active layer, a gate electrode, a source electrode, and a drain electrode;
- a bank layer covering the thin film transistor, wherein an opening is defined through the bank layer;
- an emission layer in the opening, wherein the emission layer comprises a micro p-n diode;
- a first electrode electrically connected between the thin film transistor and the emission layer;
- a second electrode over the emission layer;
- and
- a sealing layer covering the second electrode,
- wherein
- the thin film transistor and the emission layer are adjacent to each other in a horizontal direction of the display substrate,
- the first electrode covers an edge of the source electrode or the drain electrode which is exposed via the opening,
- the first electrode comprises a transparent electrode extending below the emission layer, and
- the second electrode is electrically connected to the emission layer and comprises a reflective electrode which reflects light in a direction to the display substrate.
Dependencies are inferred from the claim text.