Touch control panel, production method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-10795474-B2
Application number	US-201816165685-A
Country	US
Kind code	B2
Filing date	Oct 19, 2018
Priority date	Mar 15, 2018
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

There is provided a display apparatus and a production method thereof. The display apparatus has a touch control panel and a display panel, wherein at least one surface of the touch control panel has a plurality of concave-convex fine structures, and wherein the touch control panel is on a light-emitting side of the display panel. The touch control panel may have: a flexible substrate having a plurality of concave-convex fine structures on at least one surface; and a touch control electrode having at least one part formed on one or more concave-convex fine structures of the flexible substrate.

First claim

What is claimed is:

1. A display apparatus, comprising:
a touch control panel, wherein at least a lower surface of the touch control panel has a plurality of concave-convex fine structures; and
a display panel,
wherein the touch control panel comprises:
a first flexible concave-convex substrate, wherein an upper surface and a lower surface of the first flexible concave-convex substrate both have a plurality of concave-convex fine structures;
a second flexible concave-convex substrate below the first flexible concave-convex substrate, wherein the first flexible concave-convex substrate and the second flexible concave-convex substrate are bonded by a third optically clear adhesive layer, wherein an upper surface and a lower surface of the second flexible concave-convex substrate both have a plurality of concave-convex fine structures; and
a touch control electrode, wherein the touch control electrode is a double-layer-mode touch control electrode and comprises a plurality of first touch control electrodes arranged in a first direction on one of the upper and lower surfaces of the first flexible concave-convex substrate and a plurality of second touch control electrodes arranged in a second direction on one of the upper and lower surfaces of the second flexible concave-convex substrate, wherein the first direction is different from the second direction, and orthogonal projections of the first touch control electrodes on the display panel and orthogonal projections of the second touch control electrodes on the display panel do not overlap,

wherein the touch control panel is on a light-emitting side of the display panel, and
wherein the display panel and the lower surface of the touch control panel are bonded by a first optically clear adhesive layer.

2. The display apparatus according to claim 1 , wherein the display apparatus further comprises a circular polarizer, wherein the circular polarizer and an upper surface having the concave-convex fine structures of the touch control panel are bonded by a second optically clear adhesive layer.

3. The display apparatus according to claim 1 , wherein each of both surfaces of the touch control panel has the plurality of concave-convex fine structures.

4. The display apparatus according to claim 1 , wherein the concave-convex fine structure has a height of 50 nm to 50 μm.

5. The display apparatus according to claim 1 , wherein the concave-convex fine structures are uniformly provided on a surface of the touch control panel.

6. The display apparatus according to claim 1 , wherein the flexible substrate comprises inorganic oxide particles with a particle size of 1 nm to 200 nm.

7. The display apparatus according to claim 1 , wherein the display panel is an organic electroluminescent display panel.

8. The display apparatus according to claim 1 , wherein the concave-convex fine structure is a nanoscale to microscale concave-convex fine structure, and a distance between two adjacent concave-convex fine structures is 200 nm to 5 μm in the plurality of concave-convex fine structures.

9. The display apparatus according to claim 8 , wherein a distance between two adjacent concave-convex fine structures is less than 380 nm in the plurality of concave-convex fine structures.

10. A method for producing the display apparatus of claim 1 , comprising following steps for producing the touch control panel:
forming a first conductive material layer on at least one surface of a first flexible concave-convex substrate, wherein an upper surface and a lower surface of the first flexible concave-convex substrate both have a plurality of concave-convex fine structures; and
patterning the first conductive material layer to form a first touch control electrode so that at least one part of the first touch control electrode is formed on one or more concave-convex fine structures of the first flexible concave-convex substrate;
forming a second conductive material layer on at least one surface of a second flexible concave-convex substrate, wherein an upper surface and a lower surface of the second flexible concave-convex substrate both have a plurality of concave-convex fine structures; and
patterning the second conductive material layer to form a second touch control electrode so that at least one part of the second touch control electrode is formed on one or more concave-convex fine structures of the second flexible concave-convex substrate; and
bonding the first flexible concave-convex substrate and the second flexible concave-convex substrate by a third optically clear adhesive layer.

11. The method of claim 10 , wherein the first and/or second flexible substrate is formed on a support plate having a plurality of concave-convex fine structures on a surface thereof by a concave-convex template method, and is then peeled off from the support plate to obtain the first and/or second flexible substrate having a plurality of concave-convex fine structures at least on a surface in contact with the support plate.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Bu Dejun
• Tsai Pao Ming
• Li Zhao

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F2203/04102

  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 title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title