EP1387418A2
Expired / Lapsed
EP
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Laser thermal transfer from a donor element containing a hole-transporting layer
Assignee: Eastman Kodak Co
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Filing: 2003-07-21
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Granted: —
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Expires: 2023-07-21
Abstract
Abstract A donor element adapted for use in making an OLED device, includes a donor support substrate; a light-absorbing layer disposed over the substrate which, in response to light, produces heat; an emissive layer disposed over the light-absorbing layer; and a hole-transporting layer disposed over the emissive layer such that when the donor element is positioned in a transfer relationship with the OLED device and when light is absorbed by the light-absorbing layer, heat is produced that causes the vaporization transfer across a gap, of hole-transporting materials and emissive materials to the OLED device.
Inventors
- 👤 Myron W. Culver
- 👤 Lee W. Tutt
- 👤 Mitchell S. Burberry
- 👤 Ching W. Tang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 09:26
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; C; C23; C23C; C23C14/00; C23C14/04; C23C14/048; H10; H10K; H10K71/00; H10K71/10; H10K71/18; H10K71/40; H10K71/421; H10K85/00; H10K85/30; H10K85/321; H10K85/324; H10K85/341; H10K85/342; H10K85/351; H10K85/60; H10K85/615; H10K85/631; H10K85/649; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S428/917; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A donor element adapted for use in making an OLED
device, comprising: a) a donor support substrate; b) a light-absorbing layer disposed over the substrate which, in
response to light, produces heat; c) an emissive layer disposed over the light-absorbing layer;
and d) a hole-transporting layer disposed over the emissive layer
such that when the donor element is positioned in a transfer relationship with the
OLED device and when light is absorbed by the light-absorbing layer, heat is
produced that causes the vaporization transfer across a gap of hole-transporting
materials and emissive materials to the OLED device.
Claim 2
Dependent Claim
17 words
The donor element of claim 1 wherein the emissive layer
includes a host material and a dopant.
Claim 3
Dependent Claim
17 words
The donor element of claim 2 wherein the hole-transporting
layer is disposed directly on the emissive layer.
Claim 4
Dependent Claim
22 words
The donor element of claim 3 wherein the hole-transporting
layer has a thickness in a range from 0.1 nm to 5.0 nm.
Claim 5
Dependent Claim
12 words
The donor element of claim 1 wherein the hole-transporting
layer is 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl.
Claim 6
Dependent Claim
99 words
A donor element adapted for use in making an OLED
device, comprising: a) a donor support substrate; b) a light-absorbing layer disposed on the substrate which, in
response to light, produces heat; c) two or more emissive layers disposed on the light-absorbing
layer; and d) a hole-transporting layer disposed over the emissive layers
such that when the donor element is positioned in a transfer relationship with the
OLED device and when light is absorbed by the light-absorbing layer, heat is
produced that causes the vaporization transfer across a gap of hole-transporting
materials and emissive materials to the OLED device.
Claim 7
Dependent Claim
95 words
A method of using the donor element of claim 1 in the
process of making an OLED device, comprising the steps of: a) positioning the donor element in a transfer relationship with
an OLED substrate and spaced from such OLED substrate by a gap; and b) illuminating the donor element with light which is sufficient
to cause enough heat to be formed such that hole-transporting material and
emissive material are respectively deposited on the OLED substrate with the hole-transporting
material being mixed into the emissive material at the interface
between the hole-transporting and emissive materials.
Claim 8
Dependent Claim
14 words
The method of claim 7 wherein the light is provided by a
laser source.
Claim 9
Dependent Claim
14 words
The method of claim 8 wherein the laser light is from an
infrared laser.
Claim 10
Dependent Claim
95 words
A method of using the donor element of claim 6 in the
process of making an OLED device, comprising the steps of: a) positioning the donor element in a transfer relationship with
an OLED substrate and spaced from such OLED substrate by a gap; and b) illuminating the donor element with light which is sufficient
to cause enough heat to be formed such that hole-transporting material and
emissive material are respectively deposited on the OLED substrate with the hole-transporting
material being mixed into the emissive materials at the interface
between the hole-transporting and emissive materials.
References Cited (Backward Citations)
No citation records indexed.
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