Granted Patent B2

US 12,633,269 · App. 18/818,509 · Granted May 19, 2026

Inventors: Chi-Liang Wu (Hsinchu, TW); Wei-Tsung Chen (Hsinchu, TW)

Assignee: E Ink Holdings Inc.

G09G3/344G09G2300/0814G09G2310/08G09G2320/02

Abstract

Claims (35)

1 . A display device, comprising:

a pixel array, comprising a first pixel column and a second pixel column;

a multiplexer circuit, coupled to the first pixel column and the second pixel column, providing a first data signal to the first pixel column during a first period, and providing a second data signal to the second pixel column during a second period; and

a holding circuit, coupled to the first pixel column and the second pixel column, providing a reference signal to the second pixel column during the first period to maintain a display result of the second pixel column during a previous period, and providing the reference signal to the first pixel column during the second period to maintain a display result of the first pixel column during the first period,

wherein the holding circuit comprising a first holding switch and a second holding switch,

wherein during the first period, the second holding switch is turned on to provide the reference signal to the second pixel column, and the first holding switch is turned off,

wherein during the second period, the first holding switch is turned on to provide the reference signal to the first pixel column, and the second holding switch is turned off, and

wherein the reference signal is a voltage signal with a fixed low voltage level.

2 . The display device according to claim 1 , wherein the multiplexer circuit comprises:

a first selection switch, wherein a first terminal of the first selection switch receives the first data signal during the first period, a second terminal of the first selection switch is coupled to the first pixel column, and a control terminal of the first selection switch receives a first switch control signal; and

a second selection switch, wherein a first terminal of the second selection switch receives the second data signal during the second period, a second terminal of the second selection switch is coupled to the second pixel column, and a control terminal of the second selection switch receives a second switch control signal.

3 . The display device according to claim 2 , wherein:

a first terminal of the first holding switch receives the reference signal, a second terminal of the first holding switch is coupled to the first pixel column, and a control terminal of the first holding switch receives a third switch control signal; and

a first terminal of the second holding switch receives the reference signal, a second terminal of the second holding switch is coupled to the second pixel column, and a control terminal of the second holding switch receives a fourth switch control signal.

4 . The display device according to claim 3 , wherein during the first period, the first selection switch is turned on, and the second selection switch is turned off.

5 . The display device according to claim 3 , wherein during the second period, the first selection switch is turned off, and the second selection switch is turned on.

6 . The display device according to claim 1 , wherein

the first pixel column comprises a first pixel circuit,

the first pixel circuit is selected and switched based on a scanning signal, during the first period, a first unit screen corresponding to a display unit is changed in response to the first data signal, and during the second period, the first unit screen during the first period is maintained in response to the reference signal.

7 . The display device according to claim 6 , wherein

the second pixel column comprises a second pixel circuit,

the second pixel circuit and the first pixel circuit are located in a same row, and

the second pixel circuit is selected and switched based on the scanning signal, during the second period, a second unit screen corresponding to a display unit is changed in response to the second data signal, and during the first period, another unit screen during a previous period is maintained in response to the reference signal.

8 . The display device according to claim 1 , wherein the multiplexer circuit and the holding circuit are located on a same side of the pixel array.

9 . The display device according to claim 1 , wherein

the multiplexer circuit is located on a first side of the pixel array,

the holding circuit is located on a second side of the pixel array, and

the first side is different from the second side.

10 . An operating method for a display device, wherein the display device comprises a pixel array, the pixel array comprises a first pixel column and a second pixel column, and the operating method comprises:

providing a first data signal to the first pixel column during a first period, and providing a reference signal to the second pixel column during the first period to maintain a display result of the second pixel column during a previous period; and

providing a second data signal to the second pixel column during a second period, and providing the reference signal to the first pixel column during the second period to maintain a display result of the first pixel column during the first period,

wherein the display device comprises a holding circuit, the holding circuit comprises a first holding switch and a second holding switch, and the operating method comprises:

during the first period, turning on the second holding switch to provide the reference signal to the second pixel column, and turning off the first holding switch,

during the second period, turning on the first holding switch to provide the reference signal to the first pixel column, and turning off the second holding switch, and

the reference signal is a voltage signal with a fixed low voltage level.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (16)