LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD THEREOF

• Main Authors: KUO JU LIEN, LAI LUNG KUAN, SHIH CHUN HUA, ZHONG QIN-TAI, RENN YIH HUA, PENG HSUAN-TZU
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a light-emitting device.SOLUTION: A light-emitting device includes a light-emitting element, a wavelength conversion layer and a light-adjusting layer. The light-emitting element includes a first upper surface, a bottom surface, and a lateral surface between the first upper surface and the bottom surface. The wavelength conversion layer includes a transparent adhesive and a plurality of wavelength conversion particles, and has a second upper surface covering the first upper surface. The light-adjusting layer surrounds the lateral surface of the light-emitting element and has a first composition or a second composition. The first composition includes a first binder and a plurality of first diffusing particles diffused in the first binder. A weight percentage of the first diffusing particles to the light-adjusting layer is 20% or more. The second composition includes a second binder, a plurality of second diffusing particles diffused in the second binder, and a plurality of light-scattering particles diffused in the second binder. A weight percentage of the second diffusing particles to the light-adjusting layer is 5% or more, and a weight percentage of the light-scattering particles to the light-adjusting layer is 0.4% or more.SELECTED DRAWING: Figure 1A 【課題】本発明は、光学装置を提供する。【解決手段】発光装置は、発光素子、波長変換層及び光調整層を含む。発光素子は、第一上表面、下表面及び第一上表面及び下表面間にある側面を含む。波長変換層は、透明接着剤及び複数の波長変換粒子を含み、且つ第一上表面を覆う第二上表面を含む。光調整層は、発光素子の側面を囲み、且つ第一の組成又は第二の組成を有する。第一の組成は、第一接合剤及び第一接合剤に分散した複数の第一拡散粒子を含む。複数の第一拡散粒子の光調整層に対しての重量百分比は、20%以上である。第二の組成は、第二接合剤、第二接合剤に分散した複数の第二拡散粒子、及び第二接合剤に分散した複数の光散乱粒子を含む。複数の第二拡散粒子の光調整層に対しての重量百分比は、5%以上であり、且つ複数の光散乱粒子の光調整層に対しての重量百分比は、0.4%以上である。【選択図】図１Ａ