IP Library › Granted Patent US 11,250,775
Granted Patent B2
US 11,250,775 · App. 16/374,675 · Granted Feb 15, 2022

Display device

Inventors: Ju Hee Lee (Yongin-si, KR); Dae Youn Cho (Yongin-si, KR); Jong Woo Park (Yongin-si, KR); Young Tae Choi (Yongin-si, KR)
G09G3/3233G09G3/3266G09G3/3291H01L27/3276G09G2300/0413G09G2300/0426G09G2300/0439G09G2300/0809G09G2310/08
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Quick Facts
Patent No.
US 11,250,775
App. No.
16/374,675
Granted
Feb 15, 2022
Kind
B2
Abstract

A display device includes a pixel, a first control pad, a second control pad, and a first dummy pad. The pixel may emit light with luminance corresponding to a data signal. Supply of the data signal to the pixel depends on a first control signal and a second control signal. The first control pad is connected to a first control line for supplying the first control signal. The second control pad is connected to a second control line for supplying the second control signal. The first dummy pad is positioned between the first control pad and the second control pad and may receive a first dummy signal. A voltage level of the first dummy signal is in a range from a voltage level of the first control signal to a voltage level of the second control signal.

Claims (30)

1. A display device, comprising:

a pixel for emitting light with luminance corresponding to a data signal, wherein the pixel is controlled by a first control signal and a second control signal;

a first control line for transmitting the first control signal;

a second control line for transmitting the second control signal;

a first control pad electrically connected to the first control line for supplying the first control signal to the first control line;

a second control pad electrically connected to the second control line for supplying the second control signal to the second control line;

a first dummy pad that is positioned between the first control pad and the second control pad and configured to receive a first dummy signal; and

a second dummy pad that is positioned between the first dummy pad and the second control pad and configured to receive a second dummy signal, wherein a voltage level of the second dummy signal is in the range from the voltage level of the first control signal of the first control pad to the voltage level of the second control signal of the second control pad,

wherein a voltage level of the first dummy signal and a voltage level of the second dummy signal are in a range from a voltage level of the first control signal of the first control pad to a voltage level of the second control signal of the second control pad, and

wherein the first dummy signal and the second dummy signal have different voltage levels when the first control signal and the second control signal have different voltage levels.

2. The display device of claim 1 , wherein

when the first control signal and the second control signal have the same voltage level, the first dummy signal and the second dummy signal have the same voltage level.

3. The display device of claim 2 , wherein

when the voltage level of the first control signal is greater than the voltage level of the second control signal, the voltage level of the first dummy signal is greater than the voltage level of the second dummy signal.

4. The display device of claim 3 , wherein

when the voltage level of the second control signal is greater than the voltage level of the first control signal, the voltage level of the second dummy signal is greater than the voltage level of the first dummy signal.

5. The display device of claim 1 , further comprising:

a scan driver for supplying a scanning signal that determines whether to input the data signal to the pixel,

wherein the first control line is electrically connected to the scan driver.

6. The display device of claim 5 , wherein

the second control line is electrically connected to the scan driver.

7. The display device of claim 5 , further comprising:

a light emission control driver for supplying a light emission control signal that determines a light emitting starting point and a light emitting finishing point of the pixel,

wherein the second control line is electrically connected to the light emission control driver.

8. A method of operating a display device, the method comprising:

providing a first control signal and a second control signal for controlling supply of a data signal to a pixel of the display device, wherein the pixel is configured to emit light with luminance corresponding to the data signal, wherein the first control signal is provided to a first control pad of the display device and transmitted through a first control line of the display device, and wherein the second control signal is provided to a second control pad of the display device and transmitted through a second control line of the display device;

providing a first dummy signal to a first dummy pad, wherein the first dummy pad is positioned between the first control pad and the second control pad; and

providing a second dummy signal to a second dummy pad, wherein the second dummy pad is positioned between the first dummy pad and the second control pad,

wherein a voltage level of the first dummy signal and a voltage level of the second dummy signal are in a range from a voltage level of the first control signal of the first control pad to a voltage level of the second control signal of the second control pad, and

wherein the first dummy signal and the second dummy signal have different voltage levels when the first control signal and the second control signal have different voltage levels.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 3, 2019
From: LEE, JU HEE; CHO, DAE YOUN; PARK, JONG WOO; CHOI, YOUNG TAE
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 048790/0397 →
Priority Claims (1)
KR 10-2018-0044102 · Apr 16, 2018 · national
Continuity (1)
Related Publication 20190318690A1 · Oct 17, 2019
Cited By (1)
US 12,499,813