Organic light emitting diode display substrate and preparation method thereof, and organic light emitting diode display apparatus

Patent metadata

Field	Value
Publication number	US-12283246-B2
Application number	US-202117636898-A
Country	US
Kind code	B2
Filing date	Mar 24, 2021
Priority date	Mar 24, 2021
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

Provided is a display substrate including a display region and a non-display region. The non-display region is provided with a gate drive circuit, and the gate drive circuit includes a plurality of cascaded shift register units; a shift register unit includes an input sub-circuit and a denoising output sub-circuit. The denoising output sub-circuit is connected with the input sub-circuit, a first group of clock signal lines, and a second group of clock signal lines, and the input sub-circuit is connected with a third group of clock signal lines. The third group of clock signal lines, the input sub-circuit, the first group of clock signal lines, the denoising output sub-circuit, and the second group of clock signal lines are sequentially arranged along a first direction.

First claim

The invention claimed is:

1. A display substrate, comprising:
a display region and a non-display region, wherein the non-display region is provided with a gate drive circuit comprising a plurality of cascaded shift register units; each shift register unit comprises an input sub-circuit and a denoising output sub-circuit; the denoising output sub-circuit is connected with the input sub-circuit, a first group of clock signal lines, and a second group of clock signal lines, and the input sub-circuit is connected with a third group of clock signal lines;
the third group of clock signal lines, the input sub-circuit, the first group of clock signal lines, the denoising output sub-circuit, and the second group of clock signal lines are sequentially arranged along a first direction;
the denoising output sub-circuit comprises: a denoising control unit; the first group of clock signal lines comprises a first clock signal line and a second clock signal line;
the denoising control unit at least comprises a first transistor, a second transistor, a first capacitor, and a second capacitor; a control electrode and a first electrode of the first transistor are connected with a second denoising control node, and a second electrode of the first transistor is connected with a first denoising control node; a control electrode of the second transistor is connected with the first clock signal line, a first electrode of the second transistor is connected with a first power supply line, and a second electrode of the second transistor is connected with the second denoising control node; a first electrode of the first capacitor is connected with the second denoising control node, a second electrode of the first capacitor is connected with the second clock signal line; a first electrode of the second capacitor is connected with the first denoising control node, and a second electrode of the second capacitor is connected with the first power supply line; and
the first capacitor is adjacent to the first transistor, and the second capacitor is adjacent to the first transistor.

2. The display substrate according to claim 1 , wherein the second transistor is located on a side of the first capacitor away from the first transistor.

3. The display substrate according to claim 2 , wherein
the denoising control unit further comprises a third transistor and a fourth transistor;
a control electrode of the third transistor is connected with a first output terminal of the input sub-circuit, a first electrode of the third transistor is connected with a second power supply line, and a second electrode of the third transistor is connected with the second denoising control node;
a control electrode of the fourth transistor is connected with the first output terminal of the input sub-circuit, a first electrode of the fourth transistor is connected with the second power supply line, and a second electrode of the fourth transistor is connected with the first denoising control node;
the third transistor and the fourth transistor are located on a side of the second transistor away from the first capacitor.

4. The display substrate according to claim 1 , wherein the first capacitor and the second capacitor are located on opposite sides of the first transistor in the first direction respectively, and the first clock signal line, the second clock signal line, and the first power supply line all extend along a second direction, and the first direction and the second direction are intersected.

5. The display substrate according to claim 4 , wherein an active layer of the first transistor extends along the first direction and an active layer of the second transistor extends along the second direction.

6. The display substrate according to claim 4 , wherein the denoising control unit further comprises a third transistor and a fourth transistor;
a control electrode of the third transistor is connected with a first output terminal of the input sub-circuit, a first electrode of the third transistor is connected with a second power supply line, and a second electrode of the third transistor is connected with the second denoising control node;
a control electrode of the fourth transistor is connected with the first output terminal of the input sub-circuit, a first electrode of the fourth transistor is connected with the second power supply line, and a second electrode of the fourth transistor is connected with the first denoising control node;
the third transistor and the fourth transistor are located on a side of the second transistor away from the first capacitor.

7. The display substrate according to claim 1 , wherein the first clock signal line is located on a side of the second clock signal line away from the input sub-circuit.

8. The display substrate according to claim 1 , wherein the denoising control unit further comprises a third transistor and a fourth transistor;
a control electrode of the third transistor is connected with a first output terminal of the input sub-circuit, a first electrode of the third transistor is connected with a second power supply line, and a second electrode of the third transistor is connected with the second denoising control node;
a control electrode of the fourth transistor is connected with the first output terminal of the input sub-circuit, a first electrode of the fourth transistor is connected with the second power supply line, and a second electrode of the fourth transistor is connected with the first denoising control node;
the third transistor and the fourth transistor are located on a side of the second transistor away from the first capacitor.

9. The display substrate according to claim 8 , wherein an extending direction of an active layer of the fourth transistor, an extending direction of an active layer of the third transistor, and an extending direction of an active layer of the second transistor are parallel to each other.

10. The display substrate according to claim 8 , wherein the control electrode of the third transistor and the control electrode of the fourth transistor form an integrated structure, and an active layer of the third transistor and an active layer of the second transistor form an integrated structure.

11. The display substrate according to claim 8 , wherein in a direction perpendicular to the display substrate, the display substrate comprises: a base substrate, and a semiconductor layer, a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer that are arranged on the base substrate;
the semiconductor layer at least comprises active layers of the first transistor to fourth transistor;
the first conductive layer at least comprises control electrodes of the first transistor to fourth transistor, a first sub-electrode of the first capacitor, and a first sub-electrode of the second capacitor;
the second conductive layer at least comprises a second sub-electrode of the first capacitor and a second sub-electrode of the second capacitor;
the third conductive layer at least comprises a third sub-electrode of the first capacitor, a third sub-electrode of the second capacitor, first electrode and second electrode of the first transistor to fourth transistor, a first connection line, a second connection line, and a third connection line;
the fourth conductive layer at least comprises a fourth sub-electrode of the first capacitor, a fourth sub-electrode of the second capacitor, the first clock signal line connected with the first connection line, the second clock signal line connected with the second connection line, and the first power supply line connected with the third connection line;
the first sub-electrode and the third sub-elec

Assignees

• Boe Technology Group Co Ltd

Inventors

• Lu Jiangnan
• Shang Guangliang
• Liu Libin
• Wang Li
• Yin Xinshe
• Shi Shiming

Classifications

• G11C19/28

  using semiconductor elements (G11C19/14, G11C19/36 take precedence) · CPC title

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title