Display device, touch display panel, and touch panel and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-12373051-B2
Application number	US-202118283224-A
Country	US
Kind code	B2
Filing date	Nov 18, 2021
Priority date	Mar 22, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

The present invention relates to the technical field of display, and relates to a display device, a touch display panel, and a touch panel and a manufacturing method therefor. The touch panel of the present invention may comprise a substrate, a touch layer, and a light shielding layer, the touch layer being provided on one side of the substrate. The light shielding layer and the touch layer are provided on the same side of the substrate; the light shielding layer is annular and surrounds the touch layer.

First claim

What is claimed is:

1. A touch panel, comprising:
a substrate;
a touch layer, provided on a side of the substrate; and
a light shielding layer, provided on an identical side of the substrate with the touch layer, wherein a thickness of the light shielding layer is not less than a thickness of the touch layer, the light shielding layer is annular and surrounds outside the touch layer, the light shielding layer comprises a light transmitting portion in a logo graphic, the light transmitting portion comprises light transmitting holes distributed in an array, and an aperture ratio of the light transmitting portion satisfies the following formula:
T=N ×π×( D/ 2) 2 /A;

where T is the aperture ratio, N is the number of light transmitting holes in the light transmitting portion, D is a diameter of any of the light transmitting holes, and A is an area of an orthogonal projection of the light transmitting portion on the substrate,
wherein the light transmitting holes penetrate through the light shielding layer in a direction perpendicular to the substrate to allow light to pass through, and
wherein a distance between two adjacent light transmitting holes having no light transmitting hole disposed therebetween is smaller than an aperture of any of the light transmitting holes, to avoid failure to display clear and variable logo graphics due to the light transmitting holes being too sparse.

2. The touch panel according to claim 1 , wherein the aperture ratio is not larger than 0.8.

3. The touch panel according to claim 1 , wherein an aperture of the light transmitting hole is 5 μm-10 μm, and a distance between two adjacent light transmitting holes is 3 μm-8 μm.

4. The touch panel according to claim 1 , wherein a material of the light shielding layer includes photoresist.

5. The touch panel according to claim 1 , wherein the touch layer comprises:
a plurality of first touch electrodes, extending along a row direction and distributed along a column direction;
a plurality of second touch electrodes, extending along the column direction and distributed along the row direction, wherein any of the second touch electrodes intersects with any of the first touch electrodes, and they are insulated at the intersection.

6. A touch display panel, comprising:
the touch panel according to claim 1 ;
a display substrate, provided on a side of the light shielding layer away from the substrate; and
a light-emitting element, provided between the light shielding layer and the display substrate, and configured to emit light to the light transmitting portion.

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Min Hang
• Jiang Liqing
• Zhang Guiyu
• Luo Hongqiang
• Wang Qiang

Classifications

• G06F2203/04103

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

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title