Method and optoelectronic device for manufacturing multiple conversion elements
A technology for converting components and components, applied in the direction of electric solid state devices, electrical components, semiconductor devices, etc., can solve the problems of not being able to recommend application technology, environmental health concerns, and waste of cleaning processes.
Active Publication Date: 2022-02-22
OSRAM OPTO SEMICON GMBH & CO OHG
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Problems solved by technology
Quantum dots as conversion material have the disadvantage that they usually consist of cadmium selenide or contain cadmium selenide, which in turn is a concern according to EHS (Environment Health and Safety)
Due to this problem, application techniques such as, for example, spraying cannot be recommended as a process, since the entire device chamber is contaminated here with toxic materials
This leads to high material waste and complex cleaning procedures of the equipment
Method used
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Embodiment Construction
[0071] Figures 1A to 1D A method for producing a plurality of conversion elements according to one embodiment is shown. as in Figure 1A As shown in , provide a support such as a Teflon film. A first element 2 is applied to this first carrier 1 . The first element 2 is applied by means of a first application technique 3 . The first application technique 3 can be, for example, spray coating or electrophoretic deposition. The first element 2 can have a conversion material 21, in particular a conventional luminescent material ( Figure 1B ). The conversion material 21 can be dispersed in a further matrix material 22 (not shown here). The second element 4 is produced onto the first element 2 by means of embossing ( Figure 1C ). The second element 4 can have quantum dots 6 . The quantum dots 6 are dispersed in a matrix material 7 , for example made of silicone resin. Subsequently, the matrix material 7 can be hardened. Before step C), it is also possible, if a further m...
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Abstract
The invention relates to a method for producing a plurality of conversion elements (100), said method having the following steps: A) providing a first carrier (1); B) applying the first element by means of a first application technique (3) (2) Application to the first carrier (1), wherein the first element (2) has a conversion material (21); C) Application of the second element (4) to the first carrier (1) by means of embossing (5) above, where the second element (4) has quantum dots (6), where the quantum dots (6) are introduced into the matrix material (7) and differ from the conversion material (21), where the first application technique (3) is the same as embossing (5 ) are different; D) hardening the matrix material (7) produced from step C); E) optionally resetting the device produced after step D) onto a second carrier (8), and F) dividing (9 ), resulting in a plurality of conversion elements (100).
Description
technical field [0001] The invention relates to a method for producing a plurality of conversion elements. Furthermore, the invention relates to an optoelectronic component comprising at least one conversion element, which is produced in particular by means of the method described here. Background technique [0002] The conversion element usually has a conversion material, such as, for example, a conventional conversion material or quantum dots. The conversion material converts the radiation emitted by the radiation source into radiation having a changed, for example longer, wavelength. The conversion material is usually dispersed in a matrix material in order to obtain the conversion material in a processable form. Quantum dots as conversion material have the disadvantage that they usually consist of cadmium selenide or contain cadmium selenide, which is therefore a concern in terms of EHS (Environment Health and Safety). Due to this problem, an application technique suc...
Claims
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IPC IPC(8): H01L33/50H01L51/50H01L51/56
CPCH01L33/504H01L33/505H01L33/507H01L2933/0041H10K50/12H10K50/115H01L33/502
Inventor 马库斯·平德尔马丁·布兰德尔
Owner OSRAM OPTO SEMICON GMBH & CO OHG