Display component and display device

Patent metadata

Field	Value
Publication number	US-11081506-B2
Application number	US-201916532953-A
Country	US
Kind code	B2
Filing date	Aug 6, 2019
Priority date	May 14, 2019
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

A display component and a display device are provided. The display component includes a display panel including a first substrate, a thin-film transistor array layer, a second substrate and a coil-containing film layer. The coil-containing film layer at least includes a first metal layer, a first insulation layer, a second metal layer, and a second insulation layer. The first metal layer includes at least one first coil and the second metal layer includes at least one signal line, where the one first coil of the first metal layer is electrically connected to one or two signal lines of the second metal layer. An orthographic projection of the first coil on the first substrate is at least partially in the display region. The display component further includes a coil drive circuit, where the coil drive circuit is electrically connected to each of the first coil and the signal line, respectively.

First claim

What is claimed is:

1. A display component, comprising:
a display panel, including a first substrate, a thin-film transistor array layer, a second substrate and a coil-containing film layer, wherein:
the coil-containing film layer is on a side of the first substrate, the thin-film transistor array layer is on a side of the coil-containing film layer away from the first substrate, and the second substrate is on a side of the thin-film transistor array layer away from the first substrate;
the coil-containing film layer at least includes a first metal layer, a first insulation layer, a second metal layer, and a second insulation layer, wherein the first metal layer is on the side of the first substrate adjacent to the second substrate, the first insulation layer is on a side of the first metal layer away from the first substrate, the second metal layer is on a side of the first insulation layer away from the first substrate, and the second insulation layer is on a side of the second metal layer away from the first substrate;
the first metal layer includes at least one first coil and the second metal layer includes at least one signal line, wherein one first coil of the first metal layer is electrically connected to one or two signal lines of the second metal layer; and

the display panel includes a display region and a non-display region surrounding the display region, and an orthographic projection of the first coil on the first substrate is at least partially in the display region; and
a coil drive circuit, wherein the coil drive circuit is electrically connected to each of the first coil and the signal line, respectively,
wherein the second metal layer further includes at least one second coil, wherein the second coil has one end electrically connected to the first coil, and an other end electrically connected to the signal line; and an orthographic projection of the second coil on the first substrate is at least partially in the display region.

2. The display component according to claim 1 , wherein:
the first metal layer includes a plurality of first coils which have different winding lengths; the second metal layer includes a plurality of the signal lines, wherein a number of the first coils is same as a number of the signal lines, or the number of the signal lines is twice the number of the first coils.

3. The display component according to claim 1 , wherein:
the coil drive circuit at least includes one signal transmitting terminal and one signal receiving terminal, wherein the signal transmitting terminal is electrically connected to the one first coil of the first metal layer, and the signal receiving terminal is electrically connected to one signal line of the second metal layer.

4. The display component according to claim 1 , wherein:
the display panel is a non-transmissive display panel.

5. The display component according to claim 1 , wherein:
the display panel is a transmissive display panel.

6. The display component according to claim 1 , wherein:
a plurality of nodes is on the one first coil; the plurality of the nodes divides the first coil into a plurality of sub-coils; and each sub-coil is electrically connected to a different signal line of the second metal layer through a third via at a node position.

7. The display component according to claim 6 , wherein:
a number of winding turns of the one first coil is an integral multiple of a number of the winding turns of one sub-coil.

8. The display component according to claim 6 , wherein:
each sub-coil is connected to a capacitor in the non-display region;
the capacitor includes a first electrode and a second electrode overlapping with the first electrode; and
the first electrode is in the first metal layer and the second electrode is in the second metal layer.

9. The display component according to claim 6 , wherein:
a plurality of switch transistors corresponding to the nodes is disposed on the first coil;
the first coil includes a signal input terminal and a signal output terminal, and a direction from the signal input terminal to the signal output terminal is a signal transmission direction; and
each switch transistor is disposed after the node corresponding to each switch transistor along the signal transmission direction.

10. The display component according to claim 9 , wherein:
the switch transistor includes a gate, a source, a drain and a silicon island, wherein the silicon island is at a semiconductor layer disposed between the first metal layer and the second metal layer; and
the gate is in the first metal layer, and the source and the drain are in the second metal layer; or the gate is in the second metal layer, and the source and the drain are in the first metal layer.

11. The display component according to claim 1 , wherein:
each of the first insulation layer and the second insulation layer is made of a material including polyimide.

12. A display component, comprising:
a display panel, including a first substrate, a thin-film transistor array layer, a second substrate and a coil-containing film layer, wherein:
the coil-containing film layer is on a side of the first substrate, the thin-film transistor array layer is on a side of the coil-containing film layer away from the first substrate, and the second substrate is on a side of the thin-film transistor array layer away from the first substrate;
the coil-containing film layer at least includes a first metal layer, a first insulation layer, a second metal layer, and a second insulation layer, wherein the first metal layer is on the side of the first substrate adjacent to the second substrate, the first insulation layer is on a side of the first metal layer away from the first substrate, the second metal layer is on a side of the first insulation layer away from the first substrate, and the second insulation layer is on a side of the second metal layer away from the first substrate;
the first metal layer includes at least one first coil and the second metal layer includes at least one signal line, wherein one first coil of the first metal layer is electrically connected to one or two signal lines of the second metal layer; and
the display panel includes a display region and a non-display region surrounding the display region, and an orthographic projection of the first coil on the first substrate is at least partially in the display region;

a coil drive circuit, wherein the coil drive circuit is electrically connected to each of the first coil and the signal line, respectively; and
a coil drive chip, wherein:
the coil drive circuit is integrated on the coil drive chip; and
the coil drive chip is electrically connected to the first coil and the signal line through a coil drive flexible printed circuit, respectively.

13. The display component according to claim 12 , wherein:
the display panel includes a first bonding area, wherein the thin-film transistor array layer at the first bonding area is hollowed out; and
the coil drive flexible printed circuit and the signal line are attached and electrically connected to each other at the first bonding area.

14. The display component according to claim 12 , wherein:
the display panel includes a second bonding area including a plurality of conductive pads; the coil drive flexible printed circuit and the conductive pads are attached and electrically connected to each other; and the conductive pads are electrically connected to the signal line through a second via in the display panel.

15. The display component according to claim 12 , further comprising:
a display drive flexible printed circuit, wherein

Assignees

• Shanghai Tianma Micro Elect Co

Inventors

• Lin Baiquan
• Xi Kerui
• Ouyang Junting
• Mao Qiongqin
• Qin Feng
• Liu Jine
• Kong Xiangjian
• Li Xiaohe

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/481 Primary

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/60 Primary

  wherein the TFTs are in active matrices · CPC title

• G02F1/13306 Primary

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• H05K1/189

  characterised by the use of flexible or folded printed circuits · CPC title