IP Library Granted Patent US 8,581,806
Granted Patent B2
US 8,581,806 · App. 11/180,674 · Granted Nov 12, 2013

Display module

Inventors: Toshihiro Sato (Mobara, JP); Yoshiyuki Kaneko (Hachiouji, JP); Yoshiro Mikami (Hitachioota, JP); Takayuki Ouchi (Hitachi, JP)
Assignees: Hitachi Displays, Ltd.; Panasonic Liquid Crystal Display Co., Ltd.
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Quick Facts
Patent No.
US 8,581,806
App. No.
11/180,674
Granted
Nov 12, 2013
Kind
B2
Abstract

A display module includes a pixel disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and a current supply line that supplies electric current to the pixel, the pixel includes a data storage device for storing a data signal supplied from the data lines, and an emitting device that emits light by the electric current supplied by the current supply line according to the data signal stored in the data storage device. One terminal of the data signal storage device is connected to one of the scanning lines placed anteriorly of to the pixel that is being selected.

Claims (51)

1. A display module comprising:

a plurality of pixels disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and current supply lines that supply electric current to the pixels, with a pixel including a capacitor and an emitting device which emits light by the electric current supplied via a current supply line dedicated solely to serving as an electric current source to the pixel throughout each frame period in accordance with a data signal stored in the capacitor, the capacitor including a pair of electrodes and an insulating layer sandwiched therebetween,

wherein the current supply line supplying electric current to the pixel, and a data line supplying an adjacent-pixel data signal to an adjacent pixel neighboring the pixel, are separate lines from one another; and

wherein overlapped portions of the pair of electrodes of the capacitor also overlap both the current supply line supplying electric current to the pixel and the data line supplying the adjacent-pixel data signal to the adjacent pixel neighboring the pixel, via an insulation layer.

2. A display module according to claim 1 ,

wherein one electrode of the pair of electrodes is made of semiconductor material; and

wherein the other electrode of the pair of the electrodes is made of metal.

3. A display module according to claim 2 , wherein the semiconductor material is made of doped semiconductor material.

4. A display module according to claim 3 ,

comprising a thin film transistor disposed in the pixel,

wherein said one electrode is disposed in a same layer as a channel of said thin film transistor.

5. A display module according to claim 4 , wherein the other electrode is disposed in a same layer as a gate of said thin film transistor.

6. A display module according to claim 2 ,

comprising a thin film transistor disposed in the pixel,

wherein said one electrode is disposed in a same layer as a channel of said thin film transistor.

7. A display module according to claim 6 , wherein the other electrode is disposed in a same layer as a gate of said thin film transistor.

8. A display module according to claim 1 , comprising a thin film transistor disposed in the pixel, with a source or a drain of the thin film transistor connected to a current supply line, wherein one electrode of the pair of electrodes is connected to the gate of the thin film transistor and is not connected to the current supply lines.

9. A display module according to claim 1 ,

wherein each of data lines and current supply lines is disposed individually.

10. A display module comprising:

a plurality of pixels disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and current supply lines that supply electric current to the pixels;

wherein a pixel includes an emitting device that emits light by the electric current supplied via a current supply line dedicated solely to serving as an electric current source to the pixel throughout each frame period in accordance with a data signal supplied via a data line, and a capacitor including a pair of electrodes and an insulating layer sandwiched therebetween,

wherein the current supply line supplying electric current to the pixel, and a data line supplying an adjacent-pixel data signal to an adjacent pixel neighboring the pixel, are separate lines from one another; and

wherein overlapped portions of the pair of electrodes of the capacitor also overlap both the current supply line supplying electric current to the pixel and the data line supplying the adjacent-pixel data signal to the adjacent pixel neighboring the pixel, via an insulation layer.

11. A display module according to claim 10 ,

wherein one electrode of the pair of electrodes is made of semiconductor material; and

wherein the other electrode of the pair of the electrodes is made of metal.

12. A display module according to claim 11 , wherein the semiconductor material is made of doped semiconductor material.

13. A display module according to claim 12 ,

comprising a thin film transistor disposed in the pixel,

wherein said one electrode is disposed in a same layer as a channel of said thin film transistor.

14. A display module according to claim 13 , wherein the other electrode is disposed in a same layer as a gate of said thin film transistor.

15. A display module according to claim 11 ,

comprising a thin film transistor disposed in the pixel,

wherein said one electrode is disposed in a same layer as a channel of said thin film transistor.

16. A display module according to claim 15 , wherein the other electrode is disposed in a same layer as a gate of said thin film transistor.

17. A display module according to claim 10 , comprising a thin film transistor disposed in the pixel, with a source or a drain of the thin film transistor connected to a current supply line, wherein one electrode of the pair of electrodes is connected to the gate of the thin film transistor and is not connected to the current supply lines.

18. A display module according to claim 10 ,

wherein each of data lines and current supply lines is disposed individually.

19. A display module comprising:

a plurality of pixels disposed in respective intersections between a plurality of scanning lines and plurality of data lines, which lines are aligned in a matrix, and current supply lines that supply electric current to the pixels; and

a pixel including a capacitor and an emitting device which emits light by the electric current supplied via a current supply line dedicated solely to serving as an electric current source to the pixel throughout each frame period in accordance with a data signal stored in the capacitor, the capacitor including a pair of electrodes and an insulating layer sandwiched therebetween,

wherein the current supply line supplying electric current to the pixel, and a data line supplying an adjacent-pixel data signal to an adjacent pixel neighboring the pixel, are separate lines from one another;

wherein the pair of electrodes of the capacitor also overlap both the current supply line supplying electric current to the pixel and the data line supplying the adjacent-pixel data signal to the adjacent pixel neighboring the pixel, via an insulation layer; and

wherein one electrode of the capacitor of the pixel, is connected to a scanning line of another pixel neighboring the pixel, where the scanning line serves momentarily during each frame period to scan in an another-pixel data signal into the another pixel.

20. A display module comprising:

a plurality of pixels disposed in respective intersections between a plurality of scanning lines and plurality of data lines, which lines are aligned in a matrix, and current supply lines that supply electric current to the pixels,

wherein a pixel of the pixels includes an emitting device that emits light by the electric current via a current supply line dedicated solely to serving as an electric current source to the pixel throughout each frame period in accordance with a data signal supplied via a data line, and a capacitor including a pair of electrodes and an insulating layer sandwiched therebetween,

wherein a current supply line supplying electric current to the pixel, and a data line supplying an adjacent-pixel data signal to an adjacent pixel neighboring the pixel, are separate lines from one another;

wherein the pair of electrodes of the capacitor overlap the current supply line supplying electric current to the pixel and the data line supplying the adjacent-pixel data signal to the adjacent pixel neighboring the pixel, via an insulation layer; and

wherein one electrode of the capacitor of the pixel, is connected to a scanning line of another pixel neighboring the pixel, where the scanning line serves momentarily during each frame period to scan in an another-pixel data signal into the another pixel.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 30, 2018
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.; JAPAN DISPLAY INC.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 046988/0801 →
CHANGE OF NAME Recorded Nov 4, 2013
From: JAPAN DISPLAY EAST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 031559/0052 →
CHANGE OF NAME Recorded Nov 1, 2013
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST INC.
Reel/Frame 031533/0933 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027362/0466 →
COMPANY SPLIT PLAN TRANSFERRING ONE HUNDRED (100) PERCENT SHARE OF PATENT AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI, LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 027362/0612 →
MERGER/CHANGE OF NAME Recorded Dec 12, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027363/0315 →
Priority Claims (1)
JP 2001-092851 · Mar 28, 2001 · national
Continuity (2)
Continuation 10105273 · Mar 26, 2002
Related Publication 20050248514A1 · Nov 10, 2005