Organic light emitting display device that detects moisture by emitting light responsive to ultraviolet light irradiation
AssigneeLG Display Co., Ltd.
InventorJeongha Shin
Life of this patent
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Abstract
An organic light emitting display device includes a substrate which is divided into an active area and a non-active area. An adhesive film and an encapsulation substrate are disposed above the substrate, and a dam is disposed in the non-active area between the substrate and the encapsulation substrate. The dam includes a polymer light emitting material that is transparent when irradiated with visible light but emits light when irradiated with ultraviolet light. Therefore, external appearance of the dam can be inspected and performance of the dam can be evaluated using ultraviolet rays.
Claims19
An organic light emitting display device, comprising:
- a substrate that is divided into an active area and a non-active area;
- an adhesive film and an encapsulation substrate disposed above the substrate;
- and
- a dam disposed in the non-active area between the substrate and the encapsulation substrate,
- wherein the dam includes a polymer light emitting material that is transparent responsive to irradiation with external visible light but emits light responsive to irradiation with ultraviolet light and deteriorates responsive to absorption of moisture such that an amount of light emitted in response to said ultraviolet irradiation changes or does not emit light.
An organic light emitting display device, comprising:
- a substrate that is divided into an active area and a non-active area;
- an adhesive film and an encapsulation substrate disposed above the substrate;
- a dam disposed in the non-active area between the substrate and the encapsulation substrate;
- and
- a light emitting layer disposed between the dam and the substrate,
- wherein the dam includes at least one material that is different from a material included in the light emitting layer, and
- wherein the dam includes a polymer light emitting material that is transparent responsive to irradiation with external visible light but emits light responsive to irradiation with ultraviolet light and deteriorates responsive to absorption of moisture such that an amount of light emitted in response to said ultraviolet irradiation changes or does not emit light.
An organic light emitting display device, comprising:
- a substrate that is divided into an active area and a non-active area;
- an adhesive film and an encapsulation substrate disposed above the substrate;
- and
- a dam disposed in the non-active area between the substrate and the encapsulation substrate,
- wherein the dam includes a first dam and a second dam disposed in the first dam such that the first dam is farther from the active area than the second dam, the first dam further including more of a polymer light emitting material than the second dam, the polymer light emitting material is transparent responsive to irradiation with external visible light but emits light responsive to irradiation with ultraviolet light and deteriorates responsive to absorption of moisture such that an amount of light emitted in response to said ultraviolet irradiation changes or does not emit light.
Dependencies are inferred from the claim text.