IP Library › Granted Patent US 9,735,143
Granted Patent B2
US 9,735,143 · App. 14/788,278 · Granted Aug 15, 2017

Display substrate

Inventors: Young-Jin Kim (Yongin-si, KR); Byoung-Ju Kim (Gwangmyeong-si, KR); Jae-Hyun Park (Yongin-si, KR); Kap Soo Yoon (Cheonan-si, KR); Jun Hyuck Jeon (Cheonan-si, KR); Jeong Uk Heo (Asan-si, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/0255G02F1/136204G09G3/3648G09G2300/0408G09G2300/0413G09G2300/0426G09G2330/04H02H9/046
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Quick Facts
Patent No.
US 9,735,143
App. No.
14/788,278
Granted
Aug 15, 2017
Kind
B2
Abstract

A display substrate. The display substrate includes: a plurality of pixel units; a gate driving unit supplying a gate signal to the plurality of pixel units and including a plurality of shift register circuits which are dependently connected to each other; a vertical start line supplying a vertical start signal to the gate driving unit; and an electrostatic protection unit having two ends connected to different points of the vertical start line, the electrostatic protection unit including a plurality of back-to-back diodes connected in series with each other between the two ends. Each of the back-to-back diodes include a pair of diodes connected in parallel to each other in a bidirectional diode structure.

Claims (38)

1. A display substrate comprising:

a plurality of pixel units;

a gate driving unit supplying a gate signal to the plurality of pixel units and including a plurality of shift register circuits which are dependently connected to each other;

a vertical start line supplying a vertical start signal to the gate driving unit; and

an electrostatic protection unit including a plurality of back-to-back diodes connected in series with each other between different points of the vertical start line.

2. The display substrate of claim 1 , each back-to-back diode including a pair of diodes bidirectionally connected in parallel to each other.

3. A display substrate comprising:

a plurality of pixel units;

a gate driving unit, supplying a gate signal to the plurality of pixel units and including a plurality of shift register circuits which are dependently connected to each other;

a vertical start line supplying a vertical start signal to the gate driving unit;

a common voltage line supplying a common voltage to the plurality of pixel units; and

an electrostatic protection unit distributing electrostatic introduced into the vertical start line to the common voltage line, the electrostatic protection unit including:

a first diode unit connected between the vertical start line and the common voltage line and including one or more first back-to-back diodes connected in series with each other,

a second diode unit connected between the vertical start line and the common voltage line and including one or more second back-to-back diodes connected in series with each other,

a first connection line connecting the first diode unit to the common voltage line,

a second connection line connecting the second diode unit to the common voltage line, and

a dummy line connected between the first connection line and the second connection line.

4. The display substrate of claim 3 , the first and second back-to-back diode units each including:

a pair of diodes bidirectionally connected in parallel to each other.

5. The display substrate of claim 3 , the first diode unit and the second diode unit being connected to different points along; the vertical start line.

6. The display substrate of claim 3 , the electrostatic protection unit further including:

a ticks thin film transistor connected between the vertical start line and the first diode unit.

7. The display substrate of claim 6 , the ticks thin film transistor including:

a transistor having a gate connected to the first diode unit and a drain connected to the vertical start line, and

a capacitor connected between a source and the gate of the transistor.

8. A display substrate comprising:

a plurality of pixel units;

a gate driving unit supplying a gate signal to the plurality of pixel units and including a plurality of shift register circuits which are dependently connected to each other;

a vertical start line supplying a vertical start signal to the gate driving unit;

a common voltage line supplying a common voltage to the plurality of pixel units; and

an electrostatic protection unit distributing electrostatic introduced into the vertical start line to the common voltage line, the electrostatic protection unit including:

a first diode unit connected between the vertical start line and the common voltage line and including one or more first back-to-back diodes connected in series with each other, and

a ticks thin film transistor connected between the vertical start line and the first diode unit,

wherein the ticks thin film transistor is configured to include a transistor having a gate connected to the common voltage line through the first diode unit and a drain connected to the vertical start line, and a capacitor connected between a source and the gate of the transistor.

9. The display substrate of claim 8 , the electrostatic protection unit further including:

a second diode unit connected in parallel to the first diode unit, second diode unit being connected between the vertical start line and the common voltage line and including one or more second back-to-back diodes connected in series with each other.

10. The display substrate of claim 9 , the first and second back-to-back diode units each including:

a pair of diodes connected in parallel to each other and having different directions.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2015
From: KIM, YOUNG-JIN; KIM, BYOUNG-JU; PARK, JAE-HYUN; YOON, KAP SOO; JEON, JUN HYUCK; HEO, JEONG UK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 035970/0459 →
Priority Claims (1)
KR 10-2015-0013042 · Jan 27, 2015 · national
Continuity (1)
Related Publication 20160217756A1 · Jul 28, 2016