Display device

Patent metadata

Field	Value
Publication number	US-10997935-B2
Application number	US-201715668010-A
Country	US
Kind code	B2
Filing date	Aug 3, 2017
Priority date	Sep 1, 2016
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A display device including a first substrate, a color conversion layer on the first substrate and containing a wavelength conversion material, a first conductive polarizer on the color conversion layer, and a timing controller electrically connected to the first conductive polarizer. The timing controller may measure a resistance of the first conductive polarizer to generate a compensation signal based on the measured resistance.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate;
a color conversion layer on the first substrate and including a wavelength conversion material;
a first conductive polarizer on the color conversion layer; and
a timing controller electrically connected to the first conductive polarizer, the timing controller measuring a resistance of the first conductive polarizer to generate a compensation signal based on the measured resistance.

2. The display device as claimed in claim 1 , further comprising:
a backlight to provide light to the color conversion layer; and
a backlight controller to provide a dimming signal to the backlight,
wherein the timing controller provides the compensation signal to the backlight controller.

3. The display device as claimed in claim 2 , wherein the backlight controller adjusts a duty ratio of the dimming signal based on the compensation signal.

4. The display device as claimed in claim 2 , further comprising:
a second substrate facing the first substrate and having a display area,
wherein the backlight includes a light source area corresponding to the display area.

5. The display device as claimed in claim 4 , wherein:
the timing controller measures a resistance of at least some portions of the display area to generate the compensation signal based on the measured resistance, and
the backlight receives the dimming signal generated based on the compensation signal from the backlight controller and adjusts an amount of light provided to a portion of the light source area that corresponds to the at least some portions of the display area.

6. The display device as claimed in claim 1 , wherein:
the first conductive polarizer includes a plurality of first polarization pattern units extending in a first direction, and
the timing controller is connected to one end or both ends of the plurality of first polarization pattern units by a plurality of first sensing lines.

7. The display device as claimed in claim 6 , further comprising:
a second conductive polarizer including a plurality of second polarization pattern units extending in a second direction different from the first direction, and
a plurality of second sensing lines that connect the timing controller to one end or both ends of the plurality of second polarization pattern units.

8. The display device as claimed in claim 7 , further comprising:
a second substrate facing the first substrate,
wherein the second conductive polarizer is on or under the second substrate.

9. The display device as claimed in claim 1 , wherein the timing controller includes:
a resistance measurer that measures the resistance of the first conductive polarizer, and
a compensation signal generator that generates the compensation signal based on the measured resistance.

10. The display device as claimed in claim 9 , wherein:
the timing controller further includes a memory that stores a preset compensation formula therein, and
the compensation signal generator supplies the measured resistance to the compensation formula to generate the compensation signal.

11. The display device as claimed in claim 1 , further comprising:
a data driver electrically connected to the timing controller,
wherein the timing controller uses the compensation signal to correct image data and to provide the corrected image data to the data driver.

12. A display device, comprising:
a first substrate including a display area and a non-display area outside the display area;
a timing controller in the non-display area;
a second substrate facing the first substrate;
a color conversion layer including a wavelength conversion material; and
a first conductive polarizer on the color conversion layer and electrically connected to the timing controller, wherein the timing controller measures a resistance of the first conductive polarizer and generates a compensation signal based on the measured resistance.

13. The display device as claimed in claim 12 , further comprising:
a first pixel, a second pixel, and a third pixel in the display area,
wherein the color conversion layer includes a first wavelength conversion layer overlapping the first pixel and a second wavelength conversion layer overlapping the second pixel, and
wherein the first wavelength conversion layer and the second wavelength conversion layer include the wavelength conversion material.

14. The display device as claimed in claim 13 , wherein the color conversion layer further includes a transparent layer overlapping the third pixel and in a same layer as the first wavelength conversion layer and the second wavelength conversion layer.

15. The display device as claimed in claim 12 , further comprising:
a backlight to provide light to the color conversion layer; and
a backlight controller to provide a dimming signal to the backlight,
wherein the timing controller provides the compensation signal to the backlight controller, and
wherein the backlight controller adjusts a duty ratio of the dimming signal based on the compensation signal.

16. The display device as claimed in claim 15 , wherein:
the backlight includes a light source area corresponding to the display area,
the timing controller measures a resistance of at least some portions of the display area to generate the compensation signal based on the measured resistance, and
the backlight controller generates the dimming signal based on the compensation signal.

17. The display device as claimed in claim 12 , wherein:
the first conductive polarizer includes a plurality of first polarization pattern units extending in a first direction, and
the timing controller is connected to one end or both ends of the plurality of first polarization pattern by a plurality of first sensing lines.

18. The display device as claimed in claim 17 , further comprising:
a second conductive polarizer including a plurality of second polarization pattern units extending in a second direction different from the first direction,
wherein the timing controller is connected to one end or both ends of the plurality of second polarization pattern units by a plurality of second sensing lines.

19. The display device as claimed in claim 12 , wherein the timing controller further includes:
a resistance measurer to measure a resistance of the first conductive polarizer,
a compensation signal generator to generate the compensation signal based on the measured resistance, and
a memory to store a preset compensation formula,
wherein the compensation signal generator applies the measured resistance to the compensation formula to generate the compensation signal.

20. The display device as claimed in claim 12 , further comprising:
data lines; and
a data driver to provide data signals to the data lines based on image data received from the timing controller,
wherein the timing controller uses the compensation signal to correct the image data and provides the corrected image data to the data driver.

21. A device, comprising:
a first substrate;
a color conversion layer on the first substrate and including a wavelength conversion material;
conductive lines overlapping the color conversion layer;
a timing controller electrically connected to the conductive lines to measure a resistance of the conductive lines to generate a compensation signal based on the measured resistance;
a light source to provide light to the color conversion layer; and
a light source controller to provide a dimming signal to the

Assignees

• Samsung Display Co Ltd

Inventors

• Kang Jae Woong
• Park Seung Hwan
• Park Cheol Woo
• Lee Dong Gyu
• Jang Yong Jun
• Hwang Young Soo

Classifications

• G09G3/3648 Primary

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G3/2003

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G3/3406 Primary

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• G02F2201/121

  common or background · CPC title