Formulations for improved electrodes for electronic devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-023/48
H01L-023/52
H01L-029/40
출원번호
US-0791627
(2010-06-01)
등록번호
US-8680678
(2014-03-25)
발명자
/ 주소
MacKenzie, John Devin
Chen, Jian Ping
출원인 / 주소
Sumitomo Chemical Co., Ltd.
대리인 / 주소
Jaffer, David H.
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A conductive electrode paste or ink formulation including a getter removes or reduces the concentration of the unwanted impurities in an electronic device. These reductions may happen during or immediately after the fabrication or sealing of the device, or they may occur after some activation time o
A conductive electrode paste or ink formulation including a getter removes or reduces the concentration of the unwanted impurities in an electronic device. These reductions may happen during or immediately after the fabrication or sealing of the device, or they may occur after some activation time or event. Water, oxygen, carbon dioxide, hydrogen, and residual solvents are gettered.
대표청구항▼
1. A conductive electrode paste for forming an electrode of an electronic device, the electrode paste comprising: (a) a conductive metal;(b) a getter material that is capable of being temporarily inactive, of reduced activity, or latent acting when the conductive electrode paste is deposited, and is
1. A conductive electrode paste for forming an electrode of an electronic device, the electrode paste comprising: (a) a conductive metal;(b) a getter material that is capable of being temporarily inactive, of reduced activity, or latent acting when the conductive electrode paste is deposited, and is capable of being activated later by applying an activation technique, wherein the electrode is formed using a plurality of layers of the electrode paste, and wherein getter composition of the plurality of layers of electrode paste is different, and wherein a concentration of the getter material in a layer of electrode paste that is in contact with an active region of the electronic device is less than a concentration of the getter material in a layer of electrode paste that is not in contact with the active region; and(c) a binder material. 2. The electrode paste of claim 1, wherein the activation technique applied to activate the getter material after the conductive electrode paste is deposited is selected from the group consisting of thermal activation, optical activation, electrical activation, removal of a solvent that retards activity of the getter material, and protection of the getter material by a matrix that controls diffusion of contaminants to the getter material. 3. The electrode paste of claim 2, wherein the getter comprises from 0.01% to 10% by weight. 4. The electrode paste of claim 1, further comprising an organic solvent. 5. The electrode paste of claim 4, further comprising a surfactant. 6. The electrode paste of claim 4, wherein the getter material is temporarily inactive, of reduced activity, or latent acting when the electrode paste is deposited. 7. The electrode paste of claim 6, wherein the getter material is activated through a technique selected from the group consisting of thermal activation, optical activation, electrical activation, removal of a solvent that retards activity of the getter material, and protection of the getter material by a matrix that controls diffusion of contaminants to the getter material. 8. The electrode paste of claim 7, wherein the getter comprises from 0.01% to 10% by weight. 9. An electronic device including an active region, wherein the electronic device comprises an electrode formed using a conductive electrode paste comprising a conductive metal, a getter material, and a binder material, wherein the getter material is activated after the conductive electrode paste is deposited, and wherein a concentration of getter material in the electrode varies between an interface of the electrode with the active region of the device and an opposite side of the electrode. 10. The electronic device of claim 9, wherein the getter material is temporarily inactive, of reduced activity, or latent acting when the electrode paste is deposited. 11. The electronic device of claim 10, wherein the getter material is activated through a technique selected from the group consisting of thermal activation, optical activation, electrical activation, removal of a solvent that retards activity of the getter material, and protection of the getter material by a matrix that controls diffusion of contaminants to the getter material. 12. The electronic device of claim 11, wherein the getter comprises from 0.01% to 10% by weight. 13. The electronic device of claim 12, wherein the conductive electrode paste further comprises an organic solvent. 14. The electronic device of claim 13, wherein the conductive electrode paste further comprises a surfactant. 15. The electronic device of claim 9, wherein the device is an organic light emitting diode. 16. The electrode paste of claim 1, wherein the getter material converts an unwanted residual component of the electrode into a different material. 17. The electrode paste of claim 16, wherein the getter material reacts with the unwanted residual component of the paste to generate a compound that is more volatile, of higher diffusivity, or that is easier to remove or transport than the unwanted residual component. 18. The electronic device of claim 9, wherein the concentration of getter material is lower at the interface of the electrode with the active region of the device and higher on the opposite side of the electrode. 19. The electronic device of claim 9, wherein the electrode is formed using a plurality of layers of electrode paste and wherein the getter composition of the layers of electrode paste is different. 20. The electronic device of claim 19, wherein the concentration of getter material in a layer of electrode paste that is in contact with the active region is less than the concentration of getter material in a layer of electrode paste that is not in contact with the active region.
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이 특허에 인용된 특허 (11)
Pei Qibing (Santa Barbara CA) Klavetter Floyd L. (Santa Barbara CA), Electrochemical light-emitting devices.
Sheats James R. ; Hueschen Mark R. ; Seaward Karen L. ; Roitman Daniel B. ; Briggs George Andrew Davidson,GBX, Transparent, flexible permeability barrier for organic electroluminescent devices.
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