IP Library Granted Patent US 9,583,037
Granted Patent B2
US 9,583,037 · App. 13/678,700 · Granted Feb 28, 2017

Display unit and electronic apparatus

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Quick Facts
Patent No.
US 9,583,037
App. No.
13/678,700
Granted
Feb 28, 2017
Kind
B2
Abstract

A display unit includes: a display panel including, for each pixel, four or more types of sub-pixels that are different from one another in luminescent colors; and a driving circuit applying a pulse based on an image signal to each of the sub-pixels, and applying, when the sub-pixels include a sub-pixel of a defect dot, a compensated pulse configured to correct the defect dot to the sub-pixels that are adjacent or close to the sub-pixel of the defect dot.

Claims (34)

1. A display unit, comprising:

a display panel having a plurality of pixels, each pixel of the plurality of pixels including four or more types of sub-pixels that are different from one another in luminescent colors;

a detection circuit configured to compare detection currents with predicted currents for the sub-pixels and output positional information of a defect dot when a pre-determined relationship between a detection current and a predicted current of a given sub-pixel in the defect dot is satisfied; and

a driving circuit configured to apply a pulse based on an image signal to each of the sub-pixels, and configured to apply, when the sub-pixels include the given sub-pixel of the defect dot, a compensated pulse configured to correct the defect dot to the sub-pixels that are adjacent or close to the given sub-pixel of the defect dot,

wherein the compensated pulse is configured to allow a total luminance of the sub-pixels, adjacent or close to the given sub-pixel of the defect dot and to which the compensated pulse is applied, to have a magnitude that corrects the defect dot,

wherein the each pixels of the plurality of pixels includes, as the four or more types of the sub-pixels, at least three first sub-pixels and one or more second sub-pixels, the at least three first sub-pixels configured to emit light of respective three primary colors, and the one or more second sub-pixels configured to emit color light obtained by additive color mixing, and wherein

when the given sub-pixel of the defect dot is one of the at least three first sub-pixels, the one or more second sub-pixels that are adjacent to the one of the at least three first sub-pixels are illuminated by the compensated pulse, and

when the given sub-pixel of the defect dot is one of the one or more second sub-pixels, two or more of the at least three first sub-pixels that are adjacent to the one of the one or more second sub-pixels are illuminated by the compensated pulse.

2. The display unit according to claim 1 , wherein the compensated pulse is configured to allow the total luminance to be same or substantially same as a luminescence that is supposed to be obtained by the given sub-pixel of the defect dot at a time when the given sub-pixel of the defect dot emits light.

3. The display unit according to claim 1 , wherein the driving circuit applies the compensated pulse to the one or more second sub-pixels that are adjacent or close to the given sub-pixel of the defect dot, in carrying out a monochromatic display using the at least three first sub-pixels in a region that includes the defect dot.

4. The display unit according to claim 1 , wherein the driving circuit applies the compensated pulse to the at least three first sub-pixels that are adjacent or close to the given sub-pixel of the defect dot, in carrying out a monochromatic display using the one or more second sub-pixels in a region that includes the defect dot.

5. The display unit according to claim 1 , wherein the driving circuit applies, in carrying out a monochromatic display using one of the at least three first sub-pixels and the one or one second sub-pixels in a region that includes the defect dot, the compensated pulse to the at least three first sub-pixels that are adjacent or close to the given sub-pixel of the defect dot and that are unused in the monochromatic display.

6. The display unit according to claim 1 , wherein the plurality of pixels included in the display panel are arranged two-dimensionally, and the sub-pixels are arranged two-dimensionally in the each pixel of the plurality of pixels.

7. The display unit according to claim 6 , wherein the sub-pixels are arranged to prevent the sub-pixels of same type among the four or more types from being placed next to each other.

8. The display unit according to claim 1 , wherein

the plurality of pixels included in the display panel are arranged two-dimensionally in a row direction and a column direction, and the sub-pixels are arranged in the row direction in the each pixel of the plurality of pixels, and

the driving circuit applies, when the sub-pixels include the given sub-pixel of the defect dot, the compensated pulse to the sub-pixels that interpose the given sub-pixel of the defect dot therebetween in the row direction.

9. An electronic apparatus with a display unit, the display unit comprising:

a display panel having a plurality of pixels, each pixel of the plurality of pixels including four or more types of sub-pixels that are different from one another in luminescent colors;

a detection circuit configured to compare detection currents with predicted currents for the sub-pixels and output positional information of a defect dot when a pre-determined relationship between a detection current and a predicted current of a given sub-pixel in the defect dot is satisfied; and

a driving circuit configured to apply a pulse based on an image signal to each of the sub-pixels, and configured to apply, when the sub-pixels include the given sub-pixel of the defect dot, a compensated pulse configured to correct the defect dot to the sub-pixels that are adjacent or close to the given sub-pixel of the defect dot, wherein

the compensated pulse is configured to allow a total luminance of the sub-pixels, adjacent or close to the given sub-pixel of the defect dot and to which the compensated pulse is applied, to have a magnitude that corrects the defect dot,

wherein the each pixel of the plurality of pixels includes, as the four or more types of the sub-pixels, at least three first sub-pixels and one or more second sub-pixels, the at least three first sub-pixels configured to emit light of respective three primary colors, and the one or more second sub-pixels configured to emit color light obtained by additive color mixing,

when the given sub-pixel of the defect dot is one of the at least three first sub-pixels, the one or more second sub-pixels that are adjacent to the one of the at least three first sub-pixels are illuminated by the compensated pulse, and

when the given sub-pixel of the defect dot is one of the one or more second sub-pixels, two or more of the at least three first sub-pixels that are adjacent to the one of the one or more second sub-pixels are illuminated by the compensated pulse.

10. The electronic apparatus according to claim 9 , wherein the compensated pulse is configured to allow the total luminance to be same or substantially same as a luminescence that is supposed to be obtained by the given sub-pixel of the defect dot at a time when the given sub-pixel of the defect dot emits light.

11. The electronic apparatus according to claim 9 , wherein the driving circuit applies the compensated pulse to the one or more second sub-pixels that are adjacent or close to the given sub-pixel of the defect dot, in carrying out a monochromatic display using the at least three first sub-pixels in a region that includes the defect dot.

12. The electronic apparatus according to claim 9 , wherein the driving circuit applies the compensated pulse to the at least three first sub-pixels that are adjacent or close to the given sub-pixel of the defect dot, in carrying out a monochromatic display using the one or more second sub-pixels in a region that includes the defect dot.

13. The electronic apparatus according to claim 9 , wherein the driving circuit applies, in carrying out a monochromatic display using one of the at least three first sub-pixels and the one or one second sub-pixels in a region that includes the defect dot, the compensated pulse to the at least three first sub-pixels that are adjacent or close to the given sub-pixel of the defect dot and that are unused in the monochromatic display.

14. The electronic apparatus according to claim 9 , wherein the plurality of pixels included in the display panel are arranged two-dimensionally, and the sub-pixels are arranged two-dimensionally in the each pixel of the plurality of pixels.

15. The electronic apparatus according to claim 14 , wherein the sub-pixels are arranged to prevent the sub-pixels of same type among the four or more types from being placed next to each other.

16. The electronic apparatus according to claim 9 , wherein

the plurality of pixels included in the display panel are arranged two-dimensionally in a row direction and a column direction, and the sub-pixels are arranged in the row direction in the each pixel of the plurality of pixels, and

the driving circuit applies, when the sub-pixels include the given sub-pixel of the defect dot, the compensated pulse to the sub-pixels that interpose the given sub-pixel of the defect dot therebetween in the row direction.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2025
From: JDI DESIGN AND DEVELOPMENT G.K.
To: MAGNOLIA BLUE CORPORATION
Reel/Frame 072039/0656 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2024
From: JOLED, INC.
To: JDI DESIGN AND DEVELOPMENT G.K.
Reel/Frame 066382/0619 →
CORRECTION BY AFFIDAVIT FILED AGAINST REEL/FRAME 063396/0671 Recorded Jun 12, 2023
From: JOLED, INC.
To: JOLED, INC.
Reel/Frame 064067/0723 →
SECURITY INTEREST Recorded Apr 20, 2023
From: JOLED, INC.
To: INCJ, LTD.
Reel/Frame 063396/0671 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2015
From: SONY CORPORATION
To: JOLED INC.
Reel/Frame 036090/0968 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2012
From: OMOTO, KEISUKE
To: SONY CORPORATION
Reel/Frame 029310/0943 →