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US 2019/0157617 A1Published application
Flexible oled display panel and encapsulation method thereof
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsSimin PENG, Hsiang Iun HSU, Jun CAO
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Abstract
A flexible OLED display panel is disclosed and includes an encapsulation structure. The encapsulation structure includes: a first inorganic thin film formed on a surface of an OLED display layer and a surrounding region of the surface; a first organic thin film formed on a surface of the first inorganic thin film; and a plurality of dams. Each of the dams has a first sub-dam close to the first inorganic thin film and a second sub-dam away from the first inorganic thin film. A gap is formed between the first sub-dam and the second sub-dam which are located at a same side. The gap is filled with desiccant.
Claims15
A flexible OLED display panel, comprising:
- a flexible substrate;
- an OLED display layer formed on a surface of the flexible substrate;
- and
- an encapsulation structure formed on the flexible substrate, covering the OLED display layer and configured to prevent permeation of moisture into the OLED display layer;
- wherein the encapsulation structure includes:
- a first inorganic thin film formed on a surface of the OLED display layer and a surrounding region of the surface;
- a first organic thin film formed on a surface of the first inorganic thin film;
- and
- a plurality of dams arranged on the surface of the flexible substrate and disposed at ends of the first inorganic thin film;
- a second inorganic thin film formed on the flexible substrate and covering the first organic thin film and the dam;
- a second organic thin film formed on a surface of the second inorganic thin film;
- a third inorganic thin film formed on a surface of the second organic thin film;
- wherein each of the dams includes a first sub-dam close to the first inorganic thin film and a second sub-dam away from the first inorganic thin film, a gap is formed between the first sub-dam and the second sub-dam which are located at a same end of the first inorganic thin film, and the gap is filled with waterproof material;
- and
- a space is reserved between an edge of the first organic thin film and the first sub-dam to connect the first inorganic thin film and the second inorganic thin film;
- the space is filled with a first inorganic material layer made of the same material as the first inorganic thin film and the second inorganic thin film.
13 more elements
A flexible OLED display panel, comprising:
- a flexible substrate;
- an OLED display layer formed on a surface of the flexible substrate;
- and
- an encapsulation structure formed on the flexible substrate, covering the OLED display layer and configured to prevent permeation of moisture into the OLED display layer;
- wherein the encapsulation structure includes:
- a first inorganic thin film formed on a surface of the OLED display layer and a surrounding region of the surface;
- a first organic thin film formed on a surface of the first inorganic thin film;
- and
- a plurality of dams arranged on the surface of the flexible substrate and disposed at ends of the first inorganic thin film;
- a second inorganic thin film formed on the flexible substrate and covering the first organic thin film and the dam;
- a second organic thin film formed on a surface of the second inorganic thin film;
- a third inorganic thin film formed on a surface of the second organic thin film;
- wherein each of the dams includes a first sub-dam close to the first inorganic thin film and a second sub-dam away from the first inorganic thin film, a gap is formed between the first sub-dam and the second sub-dam which are located at a same end of the first inorganic thin film, and the gap is filled with waterproof material.
10 more elements
An encapsulating method for a flexible OLED display panel, comprising:
- a step S10 of providing a flexible substrate and forming an OLED display layer on a surface of the flexible substrate;
- a step S20 of providing a plurality of dams on an outer side of the OLED display layer;
- wherein the step S20 further comprises:
- a step S201 of providing, in a position close to the OLED display layer, a plurality of first sub-dams around the OLED display layer;
- a step S202 of providing, in a position away from the OLED display layer, a plurality of second sub-dams around the first sub-dams, so that a gap is formed between the first sub-dams and the second sub-dams;
- and
- a step S203 of filling a liquid desiccant in the gap and curing the liquid desiccant;
- a step S30 of forming a first inorganic thin film within the first sub-dams so that the first inorganic thin film covers the OLED display layer;
- a step S40 of forming a first organic thin film on a surface of the first inorganic thin film;
- a step S50 of forming a second inorganic thin film on a surface of the substrate so that the second inorganic thin film covers both the dams and the first organic thin film;
- a step S60 of forming a second organic thin film on a surface of the second inorganic thin film;
- and
- a step S70 of forming a third inorganic thin film on a surface of the second organic thin film.
10 more elements
Dependencies are inferred from the claim text.