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Sealed body, light-emitting module, and method of manufacturing sealed body

專利號(hào)
US10096741B2
公開日期
2018-10-09
申請(qǐng)人
Semiconductor Energy Laboratory Co., Ltd.（JP）
發(fā)明人
Yusuke Nishido
IPC分類
H01L23/28; H01L23/29; H01L33/00; H01L33/56; H01L51/00; H01L51/52; H01L51/56
技術(shù)領(lǐng)域
sealant,emitting,substrate,light,region,sealed,layer,ray,in,energy
地域： Kanagawa-ken

摘要

A sealed body in which sealing is uniformly performed is provided. A light-emitting module in which sealing is uniformly performed is provided. A method of manufacturing the sealed body in which sealing is uniformly performed is provided. The sealed body comprises a first substrate alternately provided with a high-reflectivity region with respect to the energy ray and a low-reflectivity region with respect to the energy ray so as to overlap with a sealant surrounding a sealed object, and a second substrate capable of transmitting the energy ray. The sealed object is sealed between the first substrate and the second substrate by heating the sealant with irradiation with the energy ray through the second substrate.

說明書

When a laser beam spot having a circular shape is divided into strip shapes along the scanning direction, one of them at the center has the longest length which is substantially equal to the diameter of the laser beam spot. The strip shape nearer to the end portion of the laser beam spot has a shorter length. When scanning is performed with such a laser beam spot, a portion through which the strip shape including the center of the laser beam spot passes is irradiated with the laser beam for the longest time. In contrast, a portion through which the strip shape nearer to the end portion of the laser beam spot passes is irradiated with the laser beam for a shorter time. For such reasons, the integral intensity of the laser beam might be uneven in the direction perpendicular to the scanning direction. When such unevenness is caused, the sealant 131 cannot be uniformly heated and thus defective sealing occurs in some cases.

A phenomenon in which the integral intensity of the laser beam is uneven in the direction perpendicular to the scanning direction might be caused also when the laser beam spot has a rectangular shape or a linear shape. Specifically, such a phenomenon might be caused when the integral energy intensity of the end portion of the rectangular or linear laser beam spot is lower than that of the center thereof.

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