LIGHT-EMITTING DEVICE

• Main Authors: NIHEI NORIKO, TACHIBANA YOSHIORI, LIANG JI-HAO
• Format: Patent
• Language: English; Japanese
• Published: 04.01.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

To provide a light-emitting device that can reduce generation of a dark line due to emitted light while narrowing the angle of the emitted light.SOLUTION: The present invention includes: a substrate; a light-emitting element arranged in the upper surface of the substrate; a wavelength conversion member arranged on the light-emitting element, the wavelength conversion member having a bottom part over the upper surface of the light-emitting element and a plurality of protrusions extending upward from the bottom part and converting the wavelength of light emitted from the light-emitting element; and an optical member having a base part continuously extending over the wavelength conversion member and a plurality of lens parts in the region immediately above the protrusions of the upper surface of the base part. The protrusions include a narrowing part becoming narrower upward.SELECTED DRAWING: Figure 3 【課題】出射光の狭角化を達成しつつ当該出射光による暗線の発生を低減可能な発光装置を提供する。【解決手段】基板と、基板の上面に配された発光素子と、発光素子上に配され、発光素子の上面を覆う底部及び底部から上方に伸長している複数の突出部を有し、発光素子から出射される光の波長を変換する波長変換部材と、波長変換部材上に亘って連続して延在している基部及び基部の上面の複数の突出部の直上の領域に複数のレンズ部を有する光学部材と、を有し、複数の突出部は、上方に向かって窄んだ形状を有する窄み部分を含むことを特徴とする。【選択図】図３