Organic vapor jet print head with solder joint
AssigneeThe Regents of the University of Michigan
InventorsStephen R. Forrest, Gregory McGraw
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Abstract
A solder joint may be used to attach components of an organic vapor jet printing device together with a fluid-tight seal that is capable of performance at high temperatures. The solder joint includes one or more metals that are deposited over opposing component surfaces, such as an inlet side of a nozzle plate and/or an outlet side of a mounting plate. The components are pressed together to form the solder joint. Two or more of the deposited metals may be capable of together forming a eutectic alloy, and the solder joint may be formed by heating the deposited metals to a temperature above the melting point of the eutectic alloy. A diffusion barrier layer and an adhesion layer may be included between the solder joint and each of the components.
Claims11
A method of making an OVJP device, comprising the steps of:
- (a) providing first and second plates, each plate having one or more fluid passages formed therethrough;
- (b) depositing a metal layer over a surface of at least one of the plates;
- and
- (c) pressing the plates together with the metal layer(s) arranged between the plates to form a solder joint that forms a fluid-tight seal between the fluid passage(s) of the first plate and the fluid passage(s) of the second plate.
A method of making an OVJP device, comprising the steps of:
- (a) providing a nozzle plate having a fluid inlet side and a mounting plate having a fluid outlet side;
- (b) depositing an adhesion layer over at least one of said inlet or outlet sides;
- (c) depositing a diffusion barrier layer over at least one of said inlet or outlet sides;
- (d) depositing a layer of noble metal over at least one of said inlet or outlet sides;
- (e) depositing a layer of metal capable of forming a eutectic alloy with the noble metal over at least one of said inlet or outlet sides;
- and
- (f) forming said eutectic alloy between said inlet and outlet sides with said inlet and outlet sides facing each other.
Dependencies are inferred from the claim text.