Supporting backplane and display apparatus

Patent metadata

Field	Value
Publication number	US-2022343809-A1
Application number	US-202117763398-A
Country	US
Kind code	A1
Filing date	May 26, 2021
Priority date	May 29, 2020
Publication date	Oct 27, 2022
Grant date	—

Abstract

Provided are a supporting backplane and a display apparatus. The supporting backplane is arranged at one side of a flexible display panel, and the supporting backplane at least comprises a main bending area, wherein a bending axis corresponding to the main bending area extends in a first direction; the main bending area is provided with a plurality of first hollow holes, the plurality of first hollow holes being arranged in an array in the first direction and a second direction, which is orthogonal to the first direction; each of the first hollow holes is provided with a first middle hole area, and first arc-shaped hole areas located at two sides of the first middle hole area in the first direction.

First claim

1 . A supporting backplane, disposed on a side of a flexible display panel, the supporting backplane at least comprising a main bending area, and a bending axis corresponding to the main bending area extending in a first direction; and the main bending area being provided with a plurality of first hollow holes, and the plurality of first hollow holes being arranged in an array in the first direction and in a second direction orthogonal to the first direction; and each of the first hollow holes having a first middle hole area and first arc-shaped hole areas located at two sides of the first middle hole area in the first direction;
wherein, along a direction from positions where the first middle hole area is connected to the first arc-shaped hole areas to a central position of the first middle hole area, a size of the first middle hole area gradually decreases in the second direction.

2 . The supporting backplane according to claim 1 , wherein two opposite contour lines of the first middle hole area in the second direction are arc-shaped; and the first arc-shaped hole area is a semicircular hole area;
wherein, the first hollow hole is symmetrically arranged with respect to its center line in the first direction.

3 . The supporting backplane according to claim 2 , wherein adjacent first hollow holes in the second direction are arranged in a staggered manner.

4 . The supporting backplane according to claim 3 , wherein,
a diameter of the first arc-shaped hole area is 0.1 mm to 0.4 mm; a size of the first middle hole area in the first direction is 2 mm to 7 mm, a maximum size of the first middle hole area in the second direction is identical with the diameter of the first arc-shaped hole area, a minimum size of the first middle hole area in the second direction is 0.05 mm to 0.35 mm, and a curvature radius of the arc-shaped contour line of the first middle hole area is 10 mm to 50 mm.

5 . The supporting backplane according to claim 4 , wherein,
a distance between adjacent first hollow holes in the first direction is 0.05 mm to 0.3 mm; a stagger size between the adjacent first hollow holes in the second direction is 1 mm to 4 mm; a distance between center lines of the adjacent first hollow holes in the second direction is 0.2 mm to 0.5 mm.

6 . The supporting backplane according to claim 2 , wherein the supporting backplane further comprises transition bending areas located at opposite two sides of the main bending area in the second direction, the transition bending area is provided with a plurality of hollow holes;
wherein, a ratio between a total area of the plurality of hollow holes in the transition bending area and a total area of the transition bending area is smaller than a ratio between a total area of the plurality of first hollow holes in the main bending area and a total area of the main bending area.

7 . The supporting backplane according to claim 6 , wherein the plurality of hollow holes in the transition bending area at least comprise a second hollow hole, a plurality of the second hollow holes are provided, the plurality of second hollow holes are arranged in an array in the first direction and the second direction, and adjacent second hollow holes in the second direction are arranged in a staggered manner;
wherein, the second hollow hole has a second middle hole area and second arc-shaped hole areas located at two sides of the second middle hole area in the first direction; shapes and sizes of the second arc-shaped hole areas are identical with shapes and sizes of the first arc-shaped hole areas; a shape of the second middle hole area is rectangular, or two opposite contour lines of the second middle hole area in the second direction are arc-shaped; and a size of the second middle hole area in the first direction is smaller than a size of the first middle hole area in the first direction.

8 . The supporting backplane according to claim 7 , wherein the plurality of hollow holes in the transition bending area further comprise a third hollow hole, and the third hollow hole is located between adjacent second hollow holes in the first direction,
wherein the third hollow hole is a circular hole, and a diameter of the third hollow hole is identical with a diameter of the first arc-shaped hole area.

9 . A display apparatus comprising: a flexible display panel and a supporting backplane, wherein the supporting backplane is disposed on a side of the flexible display panel, the supporting backplane at least comprises a main bending area, and a bending axis corresponding to the main bending area extends in a first direction; and the main bending area is provided with a plurality of first hollow holes, and the plurality of first hollow holes are arranged in an array in the first direction and in a second direction orthogonal to the first direction; and each of the first hollow holes has a first middle hole area and first arc-shaped hole areas located at two sides of the first middle hole area in the first direction;
wherein, along a direction from positions where the first middle hole area is connected to the first arc-shaped hole areas to a central position of the first middle hole area, a size of the first middle hole area gradually decreases in the second direction.

10 . The display apparatus according to claim 9 , further comprising a foam rubber layer, wherein the foam rubber layer is adhered between the supporting backplane and the flexible display panel.

11 . The display apparatus according to claim 9 , wherein two opposite contour lines of the first middle hole area in the second direction are arc-shaped; and the first arc-shaped hole area is a semicircular hole area;
wherein, the first hollow hole is symmetrically arranged with respect to its center line in the first direction.

12 . The display apparatus according to claim 11 , wherein adjacent first hollow holes in the second direction are arranged in a staggered manner.

13 . The display apparatus according to claim 12 , wherein,
a diameter of the first arc-shaped hole area is 0.1 mm to 0.4 mm; a size of the first middle hole area in the first direction is 2 mm to 7 mm, a maximum size of the first middle hole area in the second direction is identical with the diameter of the first arc-shaped hole area, a minimum size of the first middle hole area in the second direction is 0.05 mm to 0.35 mm, and a curvature radius of the arc-shaped contour line of the first middle hole area is 10 mm to 50 mm.

14 . The display apparatus according to claim 13 , wherein,
a distance between adjacent first hollow holes in the first direction is 0.05 mm to 0.3 mm; a stagger size between the adjacent first hollow holes in the second direction is 1 mm to 4 mm; a distance between center lines of the adjacent first hollow holes in the second direction is 0.2 mm to 0.5 mm.

15 . The display apparatus according to claim 11 , wherein the supporting backplane further comprises transition bending areas located at opposite two sides of the main bending area in the second direction, the transition bending area is provided with a plurality of hollow holes;
wherein, a ratio between a total area of the plurality of hollow holes in the transition bending area and a total area of the transition bending area is smaller than a ratio between a total area of the plurality of first hollow holes in the main bending area and a total area of the main bending area.

16 . The display apparatus according to claim 15 , wherein the plurality of hollow holes in the transition bending area at least comprise a second hollow hole, a plurality of the second hollow

Assignees

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

Inventors

• Chen Zuquan
• Qing Wei
• Liu Xingguo
• Liu Shaokui
• Wang Zhihui
• Zeng Wei
• Shen Danping
• Tang Qiang
• Wang Ce

Classifications

• G06F1/1656

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F1/1681

  Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683) · CPC title

• G09F9/30

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title