OLED display device with adjusted filter array
View Patent ↗A method of making an OLED display device for producing an image includes forming an array of light producing elements; testing the array of light producing elements and recording the location of defective light producing element(s); providing a default pattern of the array of color filter elements having at least two different colors; and forming an array of color filter elements in response to the recorded location of the defective light producing element(s), the location of at least one color filter element being changed from the default pattern.
1. A method of making an OLED display device for producing an image comprising:
a) forming an array of light producing elements;
b) testing the array of light producing elements and recording the location of defective light producing element(s);
c) providing a default pattern of an array of color filter elements having at least two different colors; and
d) forming an array of color filter elements in response to the recorded location of the defective light producing element(s), the location of at least one color filter element being changed from the default pattern.
2. The method of claim 1 further comprising:
e) providing a memory unit;
f) storing the locations of the defective light producing element(s), the adjusted locations of the color filter elements, or both in the memory unit; and
g) providing an electronic driving unit for driving the array of light producing elements in response to a video signal and the stored locations in the memory unit.
3. The method of claim 1 further including the step of forming active matrix circuitry.
4. The method of claim 1 wherein the light producing elements produce light having a broadband emission.
5. The method of claim 4 wherein the array of color filter elements includes a plurality of red, green, and blue color filter elements.
6. The method of claim 5 wherein the color filter elements of the array of color filter elements being spaced to form a plurality of unfiltered spaces and the array of light producing elements includes a plurality of light producing elements aligned to the red color filter elements forming red pixels, a plurality of light producing elements aligned to the green color filter elements forming green pixels, a plurality of light producing elements aligned to the blue color filter elements forming blue pixels, and a plurality of light emitting elements aligned to the unfiltered spaces forming broadband pixels.
7. The method of claim 6 wherein the locations of one or more of the color filter elements being changed relative to the default pattern in response to the recorded locations of the defective light producing elements such that the defective light producing elements are aligned to the unfiltered spaces.
8. The method of claim 1 wherein the color filter elements of the array of color filter elements being spaced to form a plurality of unfiltered spaces and the array of light producing elements includes a plurality of light emitting elements aligned to the unfiltered spaces forming broadband pixels.
9. The method of claim 8 wherein the locations of one or more of the color filter elements are adjusted in response to the recorded locations of the defective light producing elements such that the defective light producing elements are aligned to the unfiltered spaces.
10. The method of claim 1 further including forming an array of light blocking elements wherein the location of one or more the light blocking elements is adjusted in response to the recorded location of the defective light producing elements.
11. The method of claim 10 wherein the locations of one or more of the light blocking elements are adjusted in response to the recorded location of the defective light producing elements such that the defective light producing elements are aligned to the light blocking elements.
12. The method of claim 1 wherein the color filter elements are formed using a ink jet deposition.
13. The method of claim 1 wherein the color filter elements are formed by transferring the color filter material from a donor sheet.
14. The method of claim 1 wherein the color filter elements are formed using a mask-less patterning process.
15. The method of claim 1 wherein the testing of the array of light producing elements is performed in an inert or reduced pressure environment.
16. The method of claim 1 wherein the testing of the array of light producing elements includes providing electrical power to the array of light producing elements and measuring the light output of each light producing element.
17. A method of fabricating an OLED display device for producing a video image comprising:
a) providing a first substrate and a second substrate;
b) forming an array of light producing elements over the first substrate;
c) testing the first substrate and recording the location of defective light producing element(s);
d) providing a default pattern of an array of color filter elements having at least two different colors;
e) forming an array of color filter elements over the second substrate in response the recorded location of the defective light producing element(s), the location of at least one color filter element being changed from the default pattern; and
f) attaching the first substrate to the second substrate such that the array of color filter elements is in alignment with at least a portion of the array of light producing elements.
18. The method of claim 17 wherein the light producing elements and the color filter elements are disposed between the first and second substrates.