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US 11,895,868 B2Granted
Organic light emitting diode display device
AssigneeSamsung Display Co., Ltd.
InventorJungbae Song
Life of this patent
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Abstract
An organic light emitting diode (OLED) display may include: an OLED configured to emit light of wavelength λ; an encapsulation layer encapsulating the OLED, the encapsulation layer including: a first inorganic layer disposed on the OLED, the first inorganic layer including: one or more first layers having a first refractive index (n1) and a first thickness substantially equal to λ/(4*n1); and one or more second layers having a second refractive index (n2) and a second thickness substantially equal to λ/(4*n2), wherein the second refractive index is smaller than the first refractive index, and wherein the one or more first layers and the one or more second layers are alternatingly stacked on one another.
Claims28
An organic light emitting diode (OLED) display, comprising:
- a substrate;
- a plurality of pixels including a plurality of light emitting layers between a plurality of lower electrodes and an upper electrode on the substrate, wherein the plurality of light emitting layers configured to emit a first color light;
- an encapsulation layer on the upper electrode, the thin film encapsulation layer including a first inorganic layer, a second inorganic layer, and an organic layer;
- a pixel defining layer on the substrate, the pixel defining layer partially exposing the lower electrodes;
- a conversion layer configured to receive the first color light from the plurality of light emitting layers and convert the first color light to a light having a different color, the conversion layer comprising a quantum dots layer disposed on the encapsulation layer and a color filter layer disposed on the quantum dots layer,
- wherein the first inorganic layer has a first refractive index (n1) and a first thickness,
- wherein the second inorganic layer having has a second refractive index (n2) different from the first refractive index (n1) and a second thickness different from the first thickness;
- and
- wherein the quantum dots layer comprise:
- a plurality of areas disposed respectively corresponding to a plurality of sub-pixels, and
- a first black matrix disposed between the plurality of areas.
8 more elements
An organic light emitting diode (OLED) display, comprising:
- a substrate;
- a plurality of pixels including a plurality of light emitting layers between a plurality of lower electrodes and an upper electrode on the substrate, wherein the plurality of light emitting layers configured to emit a first color light;
- an encapsulation layer on the upper electrode, the encapsulation layer including a first inorganic layer, a second inorganic layer, and an organic layer;
- a pixel defining layer on the substrate, the pixel defining layer partially exposing the lower electrodes;
- a quantum dots layer disposed on the thin film encapsulation layer, the quantum dots layer comprising a plurality of areas disposed respectively corresponding to a plurality of sub-pixels, and a first black matrix disposed between the plurality of areas;
- and
- a color filter layer disposed on the quantum dots layer,
- wherein the first inorganic layer has a first refractive index (n1),
- wherein the second inorganic layer has a second refractive index (n2) different from the first refractive index (n1);
- and
- wherein the plurality of areas comprises:
- a first area corresponding to a red sub-pixel and having a plurality of red quantum dots;
- a second area corresponding to a green sub-pixel and having a plurality of green quantum dots;
- and
- a third area corresponding to a blue sub-pixel, and
- wherein the first black matrix is disposed between the first, second, and third areas.
13 more elements
An organic light emitting diode (OLED) display, comprising:
- a substrate;
- a plurality of pixels including a plurality of light emitting layers between a plurality of lower electrodes and an upper electrode on the substrate, wherein the plurality of light emitting layers configured to emit a first color light;
- an encapsulation layer on the upper electrode, the encapsulation layer including a first inorganic layer, a second inorganic layer, and an organic layer;
- a pixel defining layer on the substrate, the pixel defining layer partially exposing the lower electrodes;
- a quantum dots layer disposed on the thin film encapsulation layer, the quantum dots layer comprising a plurality of areas disposed respectively corresponding to a plurality of sub-pixels, and a first black matrix disposed between the plurality of areas;
- and
- a color filter layer disposed on the quantum dots layer,
- wherein the first inorganic layer has a first refractive index (n1),
- wherein the second inorganic layer has a second refractive index (n2) different from the first refractive index (n1);
- and
- wherein the plurality of areas comprises:
- a first area corresponding to a red sub-pixel and having a plurality of red quantum dots;
- a second area corresponding to a green sub-pixel and having a plurality of green quantum dots;
- and
- a third area corresponding to a blue sub-pixel, and
- the first black matrix is disposed between the first, second, and third areas.
13 more elements
Dependencies are inferred from the claim text.