Heat-curable silicone resin sheet having phosphor-containing layer and white pigment-containing layer, method of producing light emitting device using same and encapsulated light emitting semiconductor device produced thereby

A silicone resin, thermosetting technology, applied in the direction of semiconductor devices, chemical instruments and methods, transportation and packaging, etc., can solve the problems of high brightness, glare, etc., and achieve stability over time, good usability, and easy operation Effect

Active Publication Date: 2014-06-25
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the light source is small, LED light bulbs are more dazzling than conventional light bulbs due to their high luminance.

Method used

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  • Heat-curable silicone resin sheet having phosphor-containing layer and white pigment-containing layer, method of producing light emitting device using same and encapsulated light emitting semiconductor device produced thereby
  • Heat-curable silicone resin sheet having phosphor-containing layer and white pigment-containing layer, method of producing light emitting device using same and encapsulated light emitting semiconductor device produced thereby
  • Heat-curable silicone resin sheet having phosphor-containing layer and white pigment-containing layer, method of producing light emitting device using same and encapsulated light emitting semiconductor device produced thereby

Examples

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Effect test

preparation example Construction

[0191]The composition (2) used in the preparation of the silicone resin sheet of the present invention is obtained by uniformly mixing the components (A) to (D) and optional components blended as necessary, and the composition (1) by Components (E), (F), (C), and (G) and optional components blended as needed are uniformly mixed for further preparation. Usually, the two liquids are stored separately so that solidification does not occur, and the two liquids are mixed at the time of use, and then transferred to the next step. Of course, reaction inhibitors such as the acetylenic alcohols may be added in a small amount to be used as a single solution.

[0192] In order to produce the two-layer laminated silicone resin sheet of the present invention, the silicone resin composition (2) containing the phosphor is processed in a sheet form on a release film by using a film coater and a hot press. Then, a white heat-curable silicone resin composition (1) containing a white pigment is...

Embodiment

[0209] Although the present invention is specifically described below by describing synthesis examples, preparation examples, examples and comparative examples, the present invention is not limited to the following examples. In addition, in the following examples, the viscosity is a value at 25°C. In addition, weight average molecular weight is the polystyrene conversion value measured by gel permeation chromatography (GPC).

Synthetic example 1

[0211] -Organopolysiloxane resin containing vinyl group (A1)-

[0212] will consist of PhSiCl 3 Organosilanes shown: 27 moles, ClMe 2 SiO(Me 2 SiO) 33 SiMe 2 Cl: 1 mole, MeViSiCl 2 : After 3 moles were dissolved in toluene solvent, it was added dropwise in water, co-hydrolyzed, further washed with water, neutralized by washing with alkali, dehydrated, and then the solvent was removed to synthesize a vinyl group-containing resin (A1). The resin, its siloxane units and the [-SiMe 2 O-(Me 2 SiO) 33 -SiMe 2 o 2 / 2 ] The composition ratio of the structure represented by the chemical structural formula is expressed as:

[0213] [PhSiO 3 / 2 ] 0.27 [-SiMe 2 O-(Me 2 SiO) 33 -SiMe 2 o 2 / 2 ] 0.01 [MeViSiO 2 / 2 ] 0.03 . The resin had a weight average molecular weight of 62,000 and a melting point of 60°C.

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Abstract

The invention provides a heat-curable silicone resin sheet, a method of producing a light emitting device using the heat-curable silicone resin sheet and an encapsulated light emitting semiconductor device produced thereby. The heat-curable silicone resin sheet is capable of easily and uniformly dispersing phosphors on an LED element surface and reducing a brightness through a light-diffusing effect. The heat-curable silicone resin sheet includes at least two layers that are: a phosphor-containing layer (2) consisting essentially of a phosphor-containing heat-curable silicone resin composition that is in a plastic solid or plastic semi-solid state at room temperature; and a white-pigment-containing layer (1) consisting essentially of a white pigment-containing heat-cured silicone resin composition.

Description

technical field [0001] The present invention relates to a thermosetting silicone resin sheet, a method of manufacturing a light-emitting device using the sheet, and the light-emitting device. Among them, the heat-curable silicone resin sheet is laminated and adhered to the chip surface of the LED element to convert the wavelength of blue light and ultraviolet light of the LED, and has a phosphor-containing layer and a light-diffusing layer containing a white pigment. Layers of at least two silicone resin layers. Background technique [0002] In the field of light-emitting diodes (LEDs), it is known that phosphors are used for wavelength conversion (Patent Document 1). On the other hand, since silicone resin has excellent light resistance, it is attracting attention as a cover material for sealing and protecting LED elements (Patent Document 2). [0003] Usually, in the case of using white LEDs, by covering the LED chip with silicone resin or epoxy resin that has dispersed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18C08L83/04C08L83/05C08L83/07H01L33/50
CPCH01L2933/0091H01L33/54H01L33/501H01L2224/73204Y10T428/24967Y10T428/25Y10T428/31663H01L33/50H01L33/52H01L33/56
Inventor 柏木努盐原利夫
Owner SHIN ETSU CHEM IND CO LTD
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