Patent US5756240A successfully refreshed from Google Patents.
US5756240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making color filter arrays by transferring colorant material
Assignee: Global OLED Technology LLC
•
Filing: 1997-01-24
•
Granted: 1998-05-26
•
Expires: 2017-01-24
Abstract
Abstract A method of making a color filter array on a first substrate having an array of pixels is disclosed. The method includes depositing and patterning a photoresist layer on the substrate layer to form selected openings over pixels in the array; providing a colorant layer having a transferable colorant material on a second substrate and positioning the second substrate such that the transferable colorant material is in transferable relationship with the first substrate; transferring the colorant material to the photoresist layer on the first substrate; and removing the patterned photoresist layer leaving behind the colorant material in the position of the openings over the selected pixels.
Inventors
- 👤 Luther C. Roberts
- 👤 Ching W. Tang
- 👤 Robert G. Spahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; G; G02; G02B; G02B5/00; G02B5/20; G02B5/201; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; H; H10; H10F; H10F39/00; H10F39/011; H10F39/024; H10F39/80; H10F39/805; H10F39/8053; B41M5/385
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
A method of making a color filter array on a first substrate having an array of pixels, comprising the steps of: a) depositing and patterning a photoresist layer on the first substrate to form selected openings over pixels in the array; b) providing a colorant layer having a heat transferable colorant material on a second substrate and positioning the second substrate such that the heat transferable colorant material is in transferable relationship but spaced a distance from the first substrate; c) heating the second substrate sufficiently to cause substantially all of the heat transferable colorant material to transfer across the spaced distance to the patterned photoresist layer on the first substrate; and d) removing the patterned photoresist layer leaving behind the heat transferable colorant material in the position of the selected openings over the pixels in the array.
Claim 2
Independent Claim
138 words
A method of making a color filter array on a first substrate having an array of pixels, comprising the steps of: a) depositing and patterning a photoresist layer on the first substrate to form selected openings over pixels in the array; b) providing a colorant layer having a heat transferable colorant material on a second substrate and positioning the second substrate such that the heat transferable colorant material is in transferable relationship but spaced a distance from the first substrate; c) heating the second substrate sufficiently to cause substantially all of the heat transferable colorant material to transfer across the spaced distance to the patterned photoresist layer on the first substrate; and d) removing the patterned photoresist layer leaving behind the heat transferable colorant material in the position of the selected openings over the pixels in the array.
Claim 3
Dependent Claim
31 words
The method of claim 1, wherein the removing step includes lifting off the patterned photoresist layer, leaving behind the colorant material in the position of the openings over the selected pixels.
Claim 4
Dependent Claim
14 words
The method of claim 1 further including repeating steps a)-d) for different colorant materials.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein the transferring steps are performed at pressures ≦0.1 Torr.
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein the transferring steps are performed at a distance of ≦50 mm.
Claim 7
Dependent Claim
28 words
The method of claim 1 wherein the transferring steps are performed at pressures ≦0.1 Torr and at a distance of from about 0.1 mm to about 3.0 mm.
Claim 8
Dependent Claim
22 words
The method of claim 1 wherein the transferring steps are performed at pressures ≦0.001 Torr and at a distance of ≦50 mm.
Claim 9
Dependent Claim
31 words
The method of claim 1 wherein the colorant material is selected from the group consisting of: phthalocyanines; isoindolinones, benzimidazolones; quinophthalones; quinacridones; perylenes; dioxazines; epindolidiones; isoviolanthrones; indanthrones; imidazobenzimidazolones; pyrazoloquinazolones; diketopyrrolopyrroles; and bisaminoanthrones.
Claim 10
Dependent Claim
30 words
The method of claim 1 further including the step of providing an adhesion promoting layer over the pixels in the first substrate prior to depositing and patterning the photoresist layer.
References Cited (Backward Citations)
US4081277A
Cited
US4764670A
Cited
US4876167A
Cited
US5235198A
Cited
US5521035A
Cited
US5576265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |