High resolution display for monochrome images with color highlighting

• US 20070146242A1
• Filed: 12/22/2005
• Published: 06/28/2007
• Est. Priority Date: 12/22/2005
• Status: Abandoned Application

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Miller, Michael, Cok, Ronald
• Application Number:
  US11/315,468
• Publication Number:
  US 20070146242A1
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/30 Devices specially adapted for multicolour light emission
• CPC Class Codes: H10K 59/351 comprising more than three subpixels, e.g. red-green-blue-white [RGBW]

Abstract

A flat panel display capable of presenting high resolution monochrome images in a desired first color and highlight images in at least a desired second color different from the first color, comprising a plurality of pixels each comprised of only two individually addressable differently colored sub-pixel elements, wherein the two individually addressable differently colored sub-pixel elements emit light of the desired first color when employed together, and wherein either or both of the differently colored sub-pixel elements may be employed to emit light of the desired second color. Displays in accordance with the invention may be used to provide highlight information along with high resolution monochrome images, without the expenses associated with fabrication of high resolution full-color displays.

Claims

1. A flat panel display capable of presenting high resolution monochrome images in a desired first color and highlight images in at least a desired second color different from the first color, comprising a plurality of pixels each comprised of only two individually addressable differently colored sub-pixel elements, wherein the two individually addressable differently colored sub-pixel elements emit light of the desired first color when employed together, and wherein either or both of the differently colored sub-pixel elements may be employed to emit light of the desired second color.

2. A display according to claim 1, wherein the first color has x and y chromaticity coordinates as defined within the CIE 1931 chromaticity diagram which are between 0.23 and 0.33.

3. A display according to claim 1, wherein the individually addressable differently colored subpixel elements individually emit light of complementary colors.

4. A display according to claim 3, wherein the complementary colors are red and cyan, green and magenta, or blue and yellow.

5. A display according to claim 1, wherein the display further comprises a signal processor that utilizes subpixel interpolation to provide higher perceived resolution.

6. A display according to claim 1, further comprising additional pixels comprised of only a single individually addressable pixel element that emits light that has x and y chromaticity coordinates as defined within the CIE 1931 chromaticity diagram have distances within 0.1 from the x and y chromaticity coordinates of the desired first color.

7. A display according to claim 6, comprising a larger number of additional pixels comprised of only a single individually addressable pixel element than pixels comprised of only two individually addressable differently colored sub-pixel elements.

8. A display according to claim 1, wherein the flat panel display is an OLED display device.

9. An OLED display according to claim 8, wherein the two individually addressable differently colored subpixel elements are comprised of different light-emitting layers including different light emitting materials.

10. The OLED display according to claim 9, further comprising additional pixels comprised of only a single individually addressable pixel element that emits light that has x and y chromaticity coordinates as defined within the CIE 1931 chromaticity diagram have distances within 0.1 from the x and y chromaticity coordinates of the desired first color.

11. The OLED display according to claim 10, wherein the single individually addressable pixel elements of the additional pixels comprise multiple light-emitting layers including the different light emitting materials of the two individually addressable differently colored subpixel elements.

12. An OLED display according to claim 8, wherein the two individually addressable differently colored subpixel elements are comprised of light-emitting layers including the same light emitting materials.

13. The OLED display according to claim 12, wherein the spectrum of the light emitted by the light-emitting layers of the two individually addressable differently colored subpixel elements has peaks in both the blue and yellow or a cyan and red portions of the visible spectrum.

14. An OLED display according to claim 8, wherein the two individually addressable differently colored subpixel elements emit differently colored light through the use of one or more color filters.

15. An OLED display according to claim 8, wherein the two individually addressable differently colored subpixel elements emit differently colored light through the use of a microcavity formed in at least one of the two individually addressable differently colored subpixel elements.

16. An OLED display according to claim 8, wherein the two individually addressable differently colored subpixel elements are stacked.

17. A display according to claim 1, wherein the flat panel display is an LCD display.

18. A system for displaying a monochrome image with different color highlight information, comprising a display device according to claim 1, an image information source, a highlight information source, and a processor.

19. The system in claim 18, wherein the highlight information source comprises a computer aided diagnostic system.

20. The system in claim 18, wherein the system is an ultrasound system and wherein the two individually addressable differently colored sub-pixel elements are employed to provide highlight information in two different colors, wherein one color of highlight information indicates arterial blood flow and the other color of highlight information indicates venous blood flow.