IP Library Patent Application 13713579
Patent Application
App. No. 13/713,579

DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

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Quick Facts
Patent No.
US None
App. No.
13/713,579
Abstract

The method is for driving a display device including luminescence pixels arranged in rows and columns. The method includes: applying a black signal voltage to (a) a first target luminescence pixel in one row of each row pair and (b) a second target luminescence pixel in the other row at the same time, thereby starting the non-light-emission durations of the first and second target luminescence pixels simultaneously; (ii) applying a first data signal voltage to the first target luminescence pixel; (iii) applying a second data signal voltage to the second target luminescence pixel; and (iv) causing the first and second target luminescence pixels to emit light simultaneously based on these data signal voltages, thereby starting the light-emission durations of the first and the second target luminescence pixels simultaneously. The processing starts at different times for all row pairs.

Claims (29)

1 . A method of driving a display device including a plurality of luminescence pixels arranged in rows and columns,

each of the luminescence pixels having (a) a light-emission duration in which the each of the luminescence pixels emits light and (b) a non-light-emission duration in which the each of the luminescence pixels does not emit light, and

the method comprising:

(i) applying a black signal voltage to (a) a first target luminescence pixel in luminescence pixels in one row of each of the pairs of the rows and (b) a second target luminescence pixel in luminescence pixels in an other row of the each of the pairs at the same time, thereby starting the non-light-emission duration of the first target luminescence pixel and the non-light-emission duration of the second target luminescence pixel at the same time, and (ii) applying a first data signal voltage corresponding to the first target luminescence pixel to the first target luminescence pixel; and

(iii) applying a second data signal voltage corresponding to the second target luminescence pixel to the second target luminescence pixel, and (iv) causing the first target luminescence pixel and the second target luminescence pixel to emit light at the same time, based on the first data signal voltage and the second data signal voltage, respectively, thereby starting the light-emission duration of the first target luminescence pixel and the light-emission duration of the second target luminescence pixel at the same time,

wherein a set of (i) the applying of the black signal voltage to the first and second luminescence pixels, (ii) the applying of the first data signal voltage to the first target luminescence pixel, (iii) the applying of the second data signal voltage to the second target luminescence pixel, and (iv) the causing the first and second luminescence pixels to emit light starts at different times for the pairs of the rows.

2 . The method according to claim 1 ,

wherein each of the luminescence pixels has a one-frame duration that consists of the light-emission duration and the non-light-emission duration, and

the method comprises:

(i) performing an operation of a light-emission duration in the one-frame duration for every one of the luminescence pixels arranged in rows and columns to display one of a right-eye image and a left-eye image of a three-dimensional image, and (ii) performing an operation of the light-emission duration in a next one-frame duration following the one-frame duration for every one of the luminescence pixels arranged in rows and columns to display an other one of the right-eye image and the left-eye image, thereby allowing a user to perceive the three-dimensional image through glasses that enable the user to sequentially see the right-eye image and the left-eye image.

3 . The method according to claim 1 ,

wherein the luminescence pixels in the one row belong to one of an odd row group and an even row group of the rows, and

the luminescence pixels in the other row belong to an other of the odd row group and the even row group of the rows.

4 . The method according to claim 1 ,

wherein the luminescence pixels in the one row belong to one of an upper region and a lower region of the rows, and

the luminescence pixels in the other row belong to an other of the upper region and the lower region of the rows.

5 . A display device comprising:

a plurality of luminescence pixels arranged in rows and columns, each of the luminescence pixels having (a) a light-emission duration in which the each of the luminescence pixels emits light and (b) a non-light-emission duration in which the each of the luminescence pixels does not emit light;

a control unit configured to: (i) apply a black signal voltage to (a) a first target luminescence pixel in luminescence pixels in one row of each of the pairs of the rows and (b) a second target luminescence pixel in luminescence pixels in an other row of the each of the pairs at the same time, thereby starting the non-light-emission duration of the first target luminescence pixel and the non-light-emission duration of the second target luminescence pixel at the same time; (ii) apply a first data signal voltage corresponding to the first target luminescence pixel to the first target luminescence pixel; (iii) apply a second data signal voltage corresponding to the second target luminescence pixel to the second target luminescence pixel; and (iv) cause the first target luminescence pixel and the second target luminescence pixel to emit light at the same time, based on the first data signal voltage and the second data signal voltage, respectively, thereby starting the light-emission duration of the first target luminescence pixel and the light-emission duration of the second target luminescence pixel at the same time,

wherein the control unit is configured to perform a set of (i) the applying of the black signal voltage to the first and second luminescence pixels, (ii) the applying of the first data signal voltage to the first luminescence pixel, (iii) the applying of the second data signal voltage to the second luminescence pixel, and (iv) the causing the first and second luminescence pixels to emit light, the set starting at different times for the pairs of the rows.

6 . The display device according to claim 5 ,

wherein each of the luminescence pixels includes at least:

a luminescence element;

a storage capacitor that stores a voltage;

a first switch that switches a state between a first power line that supplies the black signal voltage and a first electrode of the storage capacitor to be conductive or not to be conductive;

a second switch that switches a state between a signal line that supplies the data signal voltage and a second electrode of the storage capacitor to be conductive or not to be conductive;

a third switch that switches a state between the second electrode of the storage capacitor and a source electrode of a driving transistor to be conductive or not to be conductive; and

the driving transistor that causes a current corresponding to the data signal voltage to flow in the luminescence element, thereby causing the luminescence element to emit light, when a gate electrode of the driving transistor is conductive with the first electrode of the storage capacitor and the data signal voltage stored in the second electrode of the storage capacitor is conductive with the source electrode of the driving transistor,

wherein the switching by the first switch is synchronization with the switching by the second switch.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 12, 2015
From: PANASONIC CORPORATION
To: JOLED INC
Reel/Frame 035187/0483 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2014
From: TSUGE, HITOSHI
To: PANASONIC CORPORATION
Reel/Frame 031956/0581 →