Transparent display device

Patent metadata

Field	Value
Publication number	US-12484398-B2
Application number	US-202217869705-A
Country	US
Kind code	B2
Filing date	Jul 20, 2022
Priority date	Jul 30, 2021
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A transparent display device is provided, which may reduce a parasitic capacitance average value of touch lines and improve uniformity of parasitic capacitance. The transparent display comprises a substrate provided with a non-transmissive area and a transmissive area, the non-transmissive area including at least two light emission areas in which a light emitting element is disposed and at least two circuit areas in which a circuit element is disposed, a plurality of first signal lines provided in the non-transmissive area over the substrate and extended in a first direction, at least one insulating layer provided over the first signal line, and a plurality of touch lines provided in the non-transmissive area over the at least one insulating layer and extended in the first direction. The plurality of first signal lines and the plurality of touch lines are disposed between adjacent circuit areas.

First claim

The invention claimed is:

1 . A transparent display device comprising:
a substrate provided with a non-transmissive area and a transmissive area, the non-transmissive area including at least two light emission areas in which a light emitting element is disposed and at least two circuit areas in which a circuit element is disposed; a plurality of first signal lines provided in the non-transmissive area over the substrate and extended in a first direction; at least one insulating layer provided over the plurality of first signal lines; a plurality of touch lines provided in the non-transmissive area over the at least one insulating layer and extended in the first direction; a touch bridge extending in a second direction and connected with the plurality of touch lines; and a cathode electrode in the non-transmissive area and spaced apart from the transmissive area, wherein the plurality of first signal lines and the plurality of touch lines are disposed between adjacent circuit areas of the at least two circuit areas.

2 . The transparent display device of claim 1 , wherein the plurality of first signal lines and the plurality of touch lines are alternately disposed.

3 . The transparent display device of claim 1 , wherein each of the plurality of touch lines is disposed between two adjacent first signal lines of the plurality of first signal lines so as not to overlap the plurality of first signal lines.

4 . The transparent display device of claim 1 , wherein each of the plurality of touch lines at least partially overlaps a respective one of the plurality of first signal lines.

5 . The transparent display device of claim 1 , wherein each of the plurality of touch lines is provided in a straight line.

6 . The transparent display device of claim 1 , wherein the number of the plurality of touch lines is the same as the number of the plurality of first signal lines.

7 . The transparent display device of claim 1 , wherein the plurality of first signal lines include a plurality of data lines and at least one reference line.

8 . The transparent display device of claim 7 , wherein two reference lines of the at least one reference line are disposed between adjacent circuit areas.

9 . The transparent display device of claim 7 , wherein one of the at least one reference line at least partially overlaps at least one touch line of the plurality of touch lines, and has a width greater than that of the at least one touch line.

10 . The transparent display device of claim 1 , wherein each of the plurality of touch lines is disposed between the light emitting element and the substrate, and is disposed to at least partially overlap one of the at least two light emission areas.

11 . The transparent display device of claim 1 , further comprising:
a driving transistor provided over the substrate; and a light shielding layer disposed between the substrate and the driving transistor, wherein the plurality of first signal lines are provided in the same layer as the light shielding layer.

12 . The transparent display device of claim 11 , wherein the at least one insulating layer includes a passivation layer provided over the driving transistor, and the plurality of touch lines are provided over the passivation layer.

13 . The transparent display device of claim 11 , further comprising:
a first planarization layer provided between the driving transistor and the light emitting element; and a second planarization layer provided over the first planarization layer, wherein the plurality of touch lines are provided between the first planarization layer and the second planarization layer.

14 . The transparent display device of claim 1 , wherein the light emission area has a rhombus shape.

15 . A transparent display device comprising:
a transmissive area in which a touch sensor is disposed; and a non-transmissive area in which a light emitting element is disposed, wherein the non-transmissive area includes:
a first signal line area having disposed therein a plurality of first signal lines extended in a first direction and supplying a signal to the light emitting element, and a plurality of touch lines extended in the first direction and electrically connected to the touch sensor;
a circuit area in which a circuit element connected to the light emitting element is disposed, including a first circuit area and a second circuit area, which are disposed to be symmetrical to each other with the first signal line area interposed therebetween;
a touch bridge extending in a second direction and connected with one of the plurality of touch lines; and
a cathode electrode in the non-transmissive area and spaced apart from transmissive area.

16 . The transparent display device of claim 15 , wherein the plurality of first signal lines and the plurality of touch lines are alternately disposed.

17 . The transparent display device of claim 15 , wherein each of the plurality of touch lines is disposed to at least partially overlap a respective one of the plurality of first signal lines with at least one insulating layer interposed therebetween.

18 . The transparent display device of claim 15 , wherein the plurality of first signal lines are disposed in a layer provided between the substrate and the circuit element, and the plurality of touch lines are disposed in a layer provided between the circuit element and the light emitting element.

19 . The transparent display device of claim 15 , further comprising a second signal line area in which a second signal line extended in the second direction.

20 . The transparent display device of claim 19 , wherein the circuit area further includes a third circuit area disposed to be symmetrical to the first circuit area with the second signal line area interposed therebetween, and a fourth circuit area disposed to be symmetrical to the second circuit area with the second signal line area interposed therebetween.

21 . The transparent display device of claim 19 , wherein the plurality of first signal lines include a plurality of data lines and at least one reference line, and the second signal line includes at least one scan line.

22 . The transparent display device of claim 19 , further comprising a plurality of subpixels disposed based on an overlap area where one of the plurality of first signal lines and the second signal line cross each other,
wherein each of the plurality of subpixels has a rhombus shape.

23 . The transparent display device of claim 15 , wherein the touch sensor includes a touch sensor electrode,
the light emitting element includes an anode electrode, a light emitting layer and the cathode electrode, and the touch sensor electrode of the touch sensor and the cathode electrode of the light emitting element are formed of the same material in the same layer.

24 . The transparent display device of claim 15 , wherein the transmissive area has light transmittance of a first value or more, and the non-transmissive area has light transmittance of a second value or less, the second value being smaller than the first value.

25 . The transparent display device of claim 15 , wherein the cathode electrode is spaced apart from the touch sensor.

26 . The transparent display device of claim 15 , wherein the cathode electrode is not provided in the transmissive area.

27 . The transparent display device of c

Assignees

• Lg Display Co Ltd

Inventors

• Lee Mireum
• Park Jaehee
• Im Jonghyeok

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/1315

  comprising structures specially adapted for lowering the resistance · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title