IP Library Granted Patent US 10,056,028
Granted Patent B2
US 10,056,028 · App. 15/348,846 · Granted Aug 21, 2018

Display unit and electronic apparatus

Inventor: Tetsuro Yamamoto (Tokyo, JP)
Assignee: JOLED Inc.
G09G3/30G09G2320/043G09G2330/021
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Quick Facts
Patent No.
US 10,056,028
App. No.
15/348,846
Granted
Aug 21, 2018
Kind
B2
Abstract

A display unit includes a plurality of pixels and a drive circuit. The plurality of pixels each includes a light emitting device, a transistor, and a capacitor. The drive circuit writes an image signal into each of the pixels and thereby performs display drive. The pixels as a whole are dividable into a plurality of pixel groups. The drive circuit performs intermittent stopping of the display drive for the respective pixel groups independently of each other in a still image display period based on the image signal.

Claims (34)

1. A display unit comprising:

a plurality of pixels each including a light emitting device, a transistor, and a capacitor; and

a drive circuit configured to write an image signal into each of the pixels to perform a display drive,

the pixels forming a plurality of pixel groups, and

the drive circuit performing intermittent stopping of the display drive for respective ones of the pixel groups independently of each other in a still image display period based on the image signal,

wherein

each of the pixel groups includes more than one of the pixels disposed along one or more scan lines,

the drive circuit performs the intermittent stopping of the display drive in the still image display period for one or more of the scan lines independently of each other,

the drive circuit performs the intermittent stopping of the display drive in the still image display period alternately for more than one of the pixels disposed along one or more odd-numbered scan lines and more than one of the pixels disposed along one or more even-numbered scan lines, the one or more odd-numbered scan lines being at one or more odd-numbered scan line positions, and the one or more even-numbered scan lines being at one or more even-numbered scan line positions, and

the drive circuit adjusts timings of performing the intermittent stopping of the display drive for the one or more odd-numbered scan lines and the one or more even-numbered scan lines independently of each other to cause the display drive in the still image display period to be performed in a constant cycle on the pixels as a whole.

2. The display unit according to claim 1 , wherein

each of the pixels is coupled to one of the scan lines on which application of a selection pulse is used to sequentially select the pixels and is coupled to a signal line to which the image signal is supplied, and

the drive circuit is configured to stop the application of the selection pulse on the scan line and to stop the display drive.

3. The display unit according to claim 2 , wherein

each of the pixels further includes a light-emission control switch that controls a light-emission period of the light emitting device, and

the drive circuit performs a control of an ON-period of the light-emission control switch for the respective pixel groups independently of each other.

4. The display unit according to claim 1 , wherein the light emitting device is an organic electroluminescence light emitting device.

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

a plurality of pixels each including a light emitting device, a transistor, and a capacitor; and

a drive circuit configured to write an image signal into each of the pixels to perform display drive,

the pixels forming a plurality of pixel groups, and

the drive circuit performing intermittent stopping of the display drive for the respective pixel groups independently of each other in a still image display period based on the image signal,

wherein

each of the pixel groups includes more than one of the pixels disposed along one or more scan lines,

the drive circuit performs the intermittent stopping of the display drive in the still image display period for one or more of the scan lines independently of each other,

the drive circuit performs the intermittent stopping of the display drive in the still image display period alternately for more than one of the pixels disposed along one or more odd-numbered scan lines and more than one of the pixels disposed along one or more even-numbered scan lines, the one or more odd-numbered scan lines being at one or more odd-numbered scan line positions, and the one or more even-numbered scan lines being at one or more even-numbered scan line positions, and

the drive circuit adjusts timings of performing the intermittent stopping of the display drive for the one or more odd-numbered scan lines and the one or more even-numbered scan lines independently of each other to cause the display drive in the still image display period to be performed in a constant cycle on the pixels as a whole.

6. The electronic apparatus according to claim 5 , wherein

each of the pixels is coupled to one of the scan lines on which application of a selection pulse is used to sequentially select the pixels and is coupled to a signal line to which the image signal is supplied, and

the drive circuit is configured to stop the application of the selection pulse on the scan line and to stop the display drive.

7. The electronic apparatus according to claim 6 , wherein

each of the pixels further includes a light-emission control switch that controls a light-emission period of the light emitting device, and

the drive circuit performs a control of an ON-period of the light-emission control switch for the respective pixel groups independently of each other.

8. The electronic apparatus according to claim 5 , wherein the light emitting device is an organic electroluminescence light emitting device.

Assignments (5)
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 Nov 10, 2016
From: YAMAMOTO, TETSURO
To: JOLED INC.
Reel/Frame 040281/0624 →
Priority Claims (1)
JP 2015-222716 · Nov 13, 2015 · national
Continuity (1)
Related Publication 20170140700A1 · May 18, 2017