Display device

• US 10,691,244 B2
• Filed: 04/22/2019
• Issued: 06/23/2020
• 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:
  US16/390,425
• Publication Number:
  US 20190250747A1
• Time in Patent Office: 428 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 display device, comprising:

a substrate;

a plurality of light emitting diodes, disposed on a surface of the substrate and forming a display region;

an insulating layer, disposed on the light emitting diodes and covering the plurality of light emitting diodes; and

a reflection reducing layer, disposed on the plurality of light emitting diodes and having a plurality of recesses and a plurality of protrusions, wherein the plurality of recesses are separated from the substrate, and the plurality of recesses and the plurality of protrusions are arranged in alternating positions;

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

2. The display device of claim 1, wherein the substrate is a transistor substrate.

3. The display device of claim 1, wherein the insulating layer has a curved portion in a cross sectional view, and the curved portion has a curved edge.

4. The display device of claim 3, further comprising a plurality of touch units and a plurality of touch signal lines electrically connected to the plurality of touch units, wherein the plurality of touch signal lines overlap with the curved portion of the insulating layer in view of a direction perpendicular to the substrate.

5. The display device of claim 3, further comprising a plurality of display signal lines electrically connected to the plurality of light emitting diodes, wherein the plurality of display signal lines overlap with the curved portion of the insulating layer in view of a direction perpendicular to the substrate.

6. The display device of claim 3, wherein the curved portion of the insulating layer is in contact with the substrate.

7. The display device of claim 1, wherein the reflection reducing layer has a curved portion in a cross sectional view, and the curved portion has a curved edge.

8. The display device of claim 7, further comprising a plurality of touch units and a plurality of touch signal lines electrically connected to the plurality of touch units, wherein the plurality of touch signal lines overlap with the curved portion of the reflection reducing layer in view of a direction perpendicular to the substrate.

9. The display device of claim 8, further comprising a plurality of display signal lines, wherein a portion of the plurality of touch units overlap with a portion of the plurality of display signal lines in view of the direction perpendicular to the substrate.

10. The display device of claim 7, further comprising a plurality of display signal lines electrically connected to the plurality of light emitting diodes, wherein the plurality of display signal lines overlap with the curved portion of the reflection reducing layer in view of a direction perpendicular to the substrate.

11. The display device of claim 7, wherein the curved portion of the reflection reducing layer is in contact with the substrate.

12. The display device of claim 1, further comprising a plurality of touch units, a plurality of touch signal lines electrically connected to the plurality of touch units, and a plurality of display signal lines electrically connected to the plurality of light emitting diodes, wherein the plurality of touch signal lines and the plurality of display signal lines do not overlap with each other in view of a direction perpendicular to the substrate.

13. The display device of claim 1, wherein the plurality of recesses are corresponding to the plurality of light emitting diodes in a direction perpendicular to the substrate.

14. The display device of claim 1, wherein a width of one of the plurality of recesses is greater than a width of one of the plurality of the light emitting diodes in a cross sectional view.

15. The display device of claim 1, wherein a thickness of one of the plurality of recesses is less than a thickness of one of the plurality of protrusions.

16. The display device of claim 1, wherein the reflection reducing layer covers the insulating layer.

17. The display device of claim 1, wherein the reflection reducing layer has different thicknesses.

18. The display device of claim 1, wherein the reflection layer is in contact with at least a second portion of the surface of the substrate, wherein the first portion and the second portion are located on the different sides of the display region.