Display device and manufacturing method thereof
AssigneeSamsung Display Co., Ltd.
InventorsKwang Soo BAE, Hae Ju YUN, Yong Seok KIM, Dae Ho SONG
Life of this patent
Estimating the term…
Abstract
An exemplary embodiment of the present inventive concept provides a display device including: an insulation substrate; a thin film transistor disposed on the substrate; a common electrode and a pixel electrode disposed on the thin film transistor to overlap each other with an insulating layer therebetween; a roof layer formed to be spaced apart from the pixel electrode with a microcavity therebetween; and a liquid crystal layer filling the microcavity. A lower portion of the roof layer includes a valley where a thickness of the roof layer is increased and a peak where the thickness of the roof layer is reduced.
Claims20
A display device comprising:
- an insulation substrate;
- a thin film transistor disposed on the substrate;
- a common electrode and a pixel electrode disposed on the thin film transistor to overlap each other with an insulating layer therebetween;
- a roof layer formed to be spaced apart from the pixel electrode formed on a pixel area with a microcavity therebetween;
- and
- a liquid crystal layer filling the microcavity,
- wherein a lower portion of the roof layer includes a valley where a thickness of the roof layer is increased and a peak where the thickness of the roof layer is reduced.
A manufacturing method of a display device, the method including:
- forming a thin film transistor on a substrate;
- forming a color filter on the thin film transistor;
- forming a common electrode on the color filter;
- forming an insulating layer on the common electrode;
- forming a pixel electrode connected to the thin film transistor on the insulating layer;
- forming a sacrificial layer of which a top surface includes undulation on the pixel electrode;
- forming a lower insulating layer on the sacrificial layer;
- forming a roof layer and a support member by coating an organic material on the lower insulating layer and patterning it;
- exposing the sacrificial layer;
- forming a microcavity between the lower insulating layer and the pixel electrode by removing the exposed sacrificial layer;
- and
- sealing the microcavity by forming an overcoat on the roof layer.
Dependencies are inferred from the claim text.