Display substrate and display apparatus

Patent metadata

Field	Value
Publication number	US-12137597-B2
Application number	US-202218270955-A
Country	US
Kind code	B2
Filing date	Aug 23, 2022
Priority date	Sep 27, 2021
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

The present application provides a displaying base plate and a displaying device, which relates to the technical field of displaying. The displaying device can ameliorate the problem of screen greening caused by electrostatic charges, thereby improving the effect of displaying. The displaying base plate includes an active area and a non-active area connected to the active area, the non-active area includes an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region; the displaying base plate further includes: a substrate; an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area.

First claim

The invention claimed is:

1. A displaying base plate, wherein the displaying base plate comprises an active area and a non-active area connected to the active area, the non-active area comprises an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region;
the displaying base plate further comprises:
a substrate;
an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and
a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area, and the touch unit is located within the active area and the non-active area, and covers the driving unit; and
the anti-static layer and the touch unit are arranged in a same one layer, or the anti-static layer is disposed at one side of the touch unit away from the substrate;
wherein the touch unit comprises a first touch layer, a first insulating layer, a second touch layer and a second insulating layer that are arranged sequentially in layer configuration on the driving unit; both of the first touch layer and the second touch layer are located within the active area, and the first insulating layer and the second insulating layer are located within the active area and the non-active area; and
one of the first touch layer and the second touch layer is a metal-mesh electrode layer, and the other is a bridging metal layer.

2. The displaying base plate according to claim 1 , wherein when the anti-static layer and the touch unit are arranged in a same one layer, the anti-static layer and the first touch layer are arranged in a same one layer; or
when the anti-static layer and the touch unit are arranged in a same one layer, the anti-static layer and the second touch layer are arranged in a same one layer.

3. The displaying base plate according to claim 2 , wherein the second insulating layer covers the first insulating layer, and a boundary of the second insulating layer is further from the first-dam region than a boundary of the first insulating layer; and
the second insulating layer located within the non-active area is disposed at one side of the anti-static layer away from the substrate.

4. The displaying base plate according to claim 3 , wherein an orthographic projection of the anti-static layer on the substrate and an orthographic projection of the second insulating layer on the substrate partially intersect or overlap; or
an orthographic projection of the anti-static layer on the substrate is located within an orthographic projection of the second insulating layer on the substrate.

5. The displaying base plate according to claim 1 , wherein when the anti-static layer is disposed at the one side of the touch unit away from the substrate, the second insulating layer located within the non-active area is disposed at one side of the anti-static layer that is closer to the substrate.

6. The displaying base plate according to claim 1 , wherein the first-dam region surrounds the active area, and the edge region surrounds the first-dam region.

7. The displaying base plate according to claim 6 , wherein the edge region comprises a cutting-transition region, a crack-dam region and a driving-circuit region; the crack-dam region surrounds the first-dam region, and is broken at the driving-circuit region; and the cutting-transition region surrounds the crack-dam region and the driving-circuit region; and
the crack-dam region comprises one or more slots, and the slots surround the first-dam region, and is broken at the driving-circuit region; and the anti-static layer covers at least some of the slots.

8. The displaying base plate according to claim 7 , wherein the displaying base plate further comprises a buffer layer, a gate insulating layer and an inter-layer-medium layer that are arranged sequentially in layer configuration; and all of the inter-layer-medium layer, the gate insulating layer and the buffer layer are located within the active area, the first-dam region and the crack-dam region; and
the slots extend throughout at least a part of the inter-layer-medium layer that is located within the crack-dam region.

9. The displaying base plate according to claim 8 , wherein the displaying base plate further comprises a first planarization part and a first protrusion, and the first planarization part is located within the cutting-transition region and the crack-dam region; the first protrusion is located within the crack-dam region, surrounds the first-dam region, and is broken at the driving-circuit region; and
the first planarization part covers all of the slots, the first protrusion is disposed at one side of the first planarization part away from the substrate, and the anti-static layer covers the first protrusion.

10. The displaying base plate according to claim 9 , wherein an edge closer to the cutting-transition region of an entirety formed by the inter-layer-medium layer, the gate insulating layer and the buffer layer has one or more steps; and the first planarization part covers all of the steps.

11. The displaying base plate according to claim 9 , wherein the edge region further comprises a crack detecting region, and the crack detecting region is located between the first-dam region and the crack-dam region; and
the crack detecting region comprises a plurality of crack detecting lines, and the anti-static layer covers all of the crack detecting lines and all of the slots.

12. The displaying base plate according to claim 11 , wherein the anti-static layer is further located within the first-dam region;
the non-active area further comprises a wiring region, and the wiring region is located between the first-dam region and the active area;
the displaying base plate further comprises a power-supply signal line, and the power-supply signal line is located within the wiring region and the first-dam region; and the power-supply signal line and the anti-static layer partially intersect or overlap in a direction perpendicular to the substrate.

13. The displaying base plate according to claim 12 , wherein all of the inter-layer-medium layer, the gate insulating layer and the buffer layer are further located within the wiring region and the crack detecting region;
the first-dam region comprises at least one first dam, and the first dam is disposed at one side of the inter-layer-medium layer away from the substrate; the first dam comprises a second protrusion, a second planarization part and a third planarization part that are sequentially arranged;
the second planarization part coats the second protrusion, and the third planarization part coats the second planarization part;
wherein the second protrusion and the first planarization part are arranged in a same one layer, and the second planarization part and the first protrusion are arranged in a same one layer.

14. The displaying base plate according to claim 13 , wherein the first-dam region further comprises a jumper wire and a third protrusion, the third protrusion is disposed at one side of the first dam closest to the cutting-transition region that is closer to the crack-dam region, the jumper wire is disposed at the one side of the inter-layer-medium layer away from the substrate, the third protrusion coats the jumper wire, and the third protrusion, the second protrusion and the first planarization part are arranged in a same one layer.

15. The displaying base plate according to claim 14 , wherein the power-supply signal line comprises at least a first power line, and the first power line is disposed at the one side of the inter-layer

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Zhao Yu
• Zhuo Yong
• He Wei
• Xin Yanxia
• Ma Qun
• Li Xiping
• Liu Jianpeng
• Fang Kui
• Tan Cheng
• Li Xueping
• Wu Yihao
• Wang Xiaoyun
• Li Haibo
• Yang Xiaoyan

Classifications

• H10W42/60

  protecting against electrostatic charges or discharges, e.g. Faraday shields (integrated devices comprising arrangements for electrical protection H10D89/60) · CPC title

• H10D86/00

  Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title