Touch display device with reflection reducing layer

• US 10,310,652 B2
• Filed: 08/07/2017
• Issued: 06/04/2019
• Est. Priority Date: 01/03/2017
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Lin, Hsiao-Lang, Yueh, Jui-Jen
• Primary Examiner(s): Blancha, Jonathan M
• Application Number:
  US15/670,129
• Publication Number:
  US 20180188862A1
• Time in Patent Office: 666 Days
• Field of Search: 345173
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 27/1218 with a particular composition or structure of the substrate
• CPC Class Codes: H01L 27/1248 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A touch display device is provided. The touch display device includes a substrate and a plurality of display units disposed on the substrate, wherein the display units form a display region and the display region has a first outline. The touch display device further includes an insulating layer disposed on the display units and a plurality of touch units disposed on the insulating layer, wherein the touch units form a touch region, and the touch region has a second outline. The touch display device further includes a reflection reducing layer disposed on the touch units, the reflection reducing layer is in contacted with the touch units and has a third outline, wherein the first outline and the second outline are located within the third outline in a view of a first direction perpendicular to the substrate.

Claims

1. A touch display device, comprising:

a substrate;

a plurality of display units, disposed on the substrate and forming a display region, wherein the display region has a first outline;

an insulating layer, disposed on the display units and covering the plurality of display units;

a plurality of touch units, disposed on the insulating layer and forming a touch region, wherein the touch region has a second outline; and

a reflection reducing layer, disposed on the touch units and in contact with the touch units, wherein the reflection reducing layer has a third outline;

wherein the first outline and the second outline are located within the third outline in a view of a first direction perpendicular to the substrate, and the insulating layer is in contact with a portion of the substrate,

wherein the reflection reducing layer is in contact with at least a portion of the insulating layer and at least a portion of the substrate.

2. The touch display device of claim 1, wherein the insulating layer has a first thickness in the first direction, the reflection reducing layer has a second thickness in the first direction, and the first thickness is greater than the second thickness.

3. The touch display device of claim 2, wherein the first thickness ranges from 2 μ

m to 50 μ

m.

4. The touch display device of claim 2, wherein the second thickness ranges from 0.05 μ

m to 2 μ

m.

5. The touch display device of claim 1, wherein the reflection reducing layer is in contact with at least a portion of the insulating layer and at least a portion of the substrate.

6. The touch display device of claim 5, wherein the third thickness is greater than the fourth thickness.

7. The touch display device of claim 5, wherein the first layer comprises silicon oxide, silicon nitride, silicon oxynitride, niobium oxide, titanium oxide, zirconium oxide, or a combination thereof.

8. The touch display device of claim 5, wherein the second layer comprises copper, aluminum, molybdenum, tungsten, gold, silver, cobalt, nickel, platinum, titanium, iridium, rhodium, niobium, chromium, an alloy thereof, or a combination thereof.

9. The touch display device of claim 5, wherein the third thickness ranges from 15 nm to 80 nm.

10. The touch display device of claim 5, wherein the fourth thickness ranges from 5 nm to 15 nm.

11. The touch display device of claim 5, wherein the reflection reducing layer further comprises a third layer, and the second layer is disposed between the first layer and the third layer.

12. The touch display device of claim 11, wherein the third layer comprises silicon oxide, silicon nitride, silicon oxynitride, niobium oxide, titanium oxide, zirconium oxide, or a combination thereof.

13. The touch display device of claim 11, wherein the third layer has a thickness ranging from 15 nm to 80 nm.

14. The touch display device of claim 1, wherein the reflection reducing layer comprises a plurality of recesses located corresponding to the display units.

15. The touch display device of claim 14, wherein the reflection reducing layer comprises a plurality of protrusions, and the protrusions and the recesses are arranged in alternating positions.

16. The touch display device of claim 15, wherein the reflection reducing layer has a fifth thickness corresponding to one of the recesses in the first direction and a sixth thickness corresponding to one of the protrusions in the first direction, and the fifth thickness is less than the sixth thickness.

17. The touch display device of claim 1, wherein the reflection reducing layer comprises a plurality of through holes located corresponding to the display units.

18. The touch display device of claim 1, wherein the insulating layer has a fourth outline, and the fourth outline is located within the third outline in the view of the first direction.

19. The touch display device of claim 1, wherein the display units comprise organic light emitting diodes, micro light emitting diodes, or liquid crystal.