Image compensating device and display device having the same

Patent metadata

Field	Value
Publication number	US-9721533-B2
Application number	US-201615003471-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Jul 6, 2015
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

An image compensating device includes a transmission ratio calculator configured to output a red transmission ratio of a user's crystalline lens, a green transmission ratio of the crystalline lens, and a blue transmission ratio of the crystalline lens based on the user's age, and a compensator configured to receive red input data, green input data, and blue input data and compensate the red input data, the green input data, and the blue input data based on the red transmission ratio, the green transmission ratio, and the blue transmission ratio.

First claim

What is claimed is:

1. An image compensating device comprising:
a transmission ratio calculator configured to calculate a red transmission ratio of a user's crystalline lens, a green transmission ratio of the crystalline lens, and a blue transmission ratio of the crystalline lens based on the user's age; and
a compensator configured to receive red input data, green input data, and blue input data and to compensate the red input data, the green input data, and the blue input data based on the red transmission ratio, the green transmission ratio, and the blue transmission ratio, wherein the compensated red input data, compensated green input data, and compensated blue input data are displayed by a display panel,
wherein the compensator includes:
a first compensator configured to compensate ratios of the red input data, the green input data, and the blue input data based on the blue transmission ratio and to output a first red compensated data, a first green compensate data, and a first blue compensated data; and
a second compensator configured to compensate the first red compensated data, the first green compensated data, and the first blue compensated data based on the blue transmission ratio and to output a second red compensated data, a second green compensated data, and a second blue compensated data.

2. The image compensating device of claim 1 , wherein the first compensator calculates the first red compensated data Rc1 from

Rc
⁢

⁢
1

=

TB
TR

⨯
R

,

wherein R is the red input data, TB is the blue transmission ratio, and TR is the red transmission ratio.

3. The image compensating device of claim 1 , wherein the first compensator calculates the first green compensated data Gc1 from

Gc
⁢

⁢
1

=

TB
TG

⨯
G

,

wherein G is the green input data, TB is the blue transmission ratio, and TG is the green transmission ratio.

4. The image compensating device of claim 1 , wherein the second compensator calculates the second red compensated data Rc2 from

Rc
⁢

⁢
2

=

1
TB

⨯
Rc

⁢

⁢
1

,

wherein Rc1 is the first red compensated data, and TB is the blue transmission ratio.

5. The image compensating device of claim 1 , wherein the second compensator calculates the second green compensated data Gc2 from

Gc
⁢

⁢
2

=

1
TB

⨯
Gc

⁢

⁢
1

,

wherein Gc1 is the first green compensated data, and TB is the blue transmission ratio.

6. The image compensating device of claim 1 , wherein the second compensator calculates the second blue compensated data Bc2 from

Bc
⁢

⁢
2

=

1
TB

⨯
Bc

⁢

⁢
1

,

wherein Bc1 is the first blue compensated data, and TB is the blue color light transmission ratio.

7. The image compensating device of claim 1 , wherein the transmission ratio calculator includes
a lookup table (LUT) that stores the red transmission ratio, the green transmission ratio, and the blue transmission ratio corresponding to certain user ages, and
an interpolator configured to calculate the red transmission ratio, the green transmission ratio, and the blue transmission ratio for user ages not stored in the LUT using interpolation based on red, green, and blue transmission ratios of user ages stored in the LUT.

8. A display device comprising:
a display panel that includes a plurality of pixels;
an image compensator configured to calculate a red transmission ratio of a user's crystalline lens, a green transmission ratio of the crystalline lens, and a blue transmission ratio of the crystalline lens based on the user's age, and compensate red input data, green input data, and blue input data received by the display panel based on the red transmission ratio, the green transmission ratio, and the blue transmission ratio, wherein the compensated red input data, compensated green input data, and compensated blue input data are displayed by the display panel;
a scan driver configured to provide a scan signal to the pixels;
a data driver configured to provide a data signal to the pixels; and
a timing controller configured to generate a control signal that controls the image compensator, the scan driver, and the data driver, wherein the image compensator is included in the timing controller or is coupled to the timing controller,
wherein the image compensator includes:
a transmission ratio calculator configured to calculate the red transmission ratio of the crystalline lens, the green transmission ratio of the crystalline lens, and the blue transmission ratio of the crystalline lens based on the user's age; and a compensator configured to compensate the red input data, the green input data, and the blue input data based on the red transmission ratio, the green transmission ratio, and the blue transmission ratio,
wherein the compensator includes: a first compensator configured to compensate ratios of the red input data, the green input data

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Hyun-Min
• Park Jae-Byung
• Kang Jae-Woong
• Kang Jong-Hyuk
• Im Hyun-Deok
• Hong Sung-Jin

Classifications

• G09G5/06 Primary

  using colour palettes, e.g. look-up tables · CPC title

• G09G3/2092

  Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165) · CPC title

• G06F3/147

  using display panels · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G2320/0261

  in the context of movement of objects on the screen or movement of the observer relative to the screen · CPC title