Glass substrate with sealing material layer, organic EL device using same, and manufacturing method for electronic device

摘要

Provided is a glass substrate with a sealing material layer, including a sealing material layer formed by sintering a sealing material, in which: the sealing material includes at least inorganic powder; the inorganic powder includes glass powder and a refractory filler; the content of refractory filler in the inorganic powder is 10 to 35 vol %; and the sealing material layer has a surface roughness Ra of less than 0.5 μm.

主权项

1. A method of producing an electronic device by laser sealing, the method comprising the steps of:
preparing a first glass substrate and a second glass substrate; mixing a first sealing material comprising a first refractory filler and a first glass powder with a first vehicle comprising a first organic binder to manufacture a first sealing material paste; mixing a second sealing material comprising a second refractory filler and a second glass powder with a second vehicle comprising a second organic binder to manufacture a second sealing material paste; applying the first sealing material paste onto the first glass substrate, followed by forming a first sealing material film; applying the second sealing material paste onto the first sealing material film, followed by forming a second sealing material film; firing the first sealing material film and the second sealing material film to form a sealing material layer onto the first glass substrate; laminating the first glass substrate and the second glass substrate via the sealing material layer to yield a laminate; and irradiating the laminate with laser light so that a laser sealing temperature is equal to or lower than a firing temperature to hermetically seal the first glass substrate and the second glass substrate, wherein the content of the second refractory filler in the second sealing material is smaller than the content of the first refractory filler in the first sealing material, and wherein the average particle diameter D50 of the second glass powder is smaller than the average particle diameter D50 of the first glass powder.