Annular display apparatus and display device

• US 10,453,363 B2
• Filed: 11/29/2018
• Issued: 10/22/2019
• Est. Priority Date: 02/27/2018
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Inventors: Wei, Meng, Zhou, Jiubin, Zhang, Lingling
• Primary Examiner(s): Lopez Cruz, Dimary S
• Application Number:
  US16/203,643
• Publication Number:
  US 20190096291A1
• Time in Patent Office: 327 Days
• Field of Search: None
• CPC Class Codes: G09F 9/301 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/056 Folded around rigid support or component
• CPC Class Codes: H05K 2201/09027 Non-rectangular flat PCB, e.g. circular
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits

Abstract

An annular display apparatus and a display device are provided. The annular display apparatus includes a display panel, an integrated circuit chip and a flexible printed circuit. The display panel includes an annular display region, an outer non-display region and an inner non-display region, the display region is provided with multiple control signal lines, the inner non-display region is provided with multiple panel binding interfaces, and the multiple control signal lines are electrically connected to the multiple panel binding interfaces respectively. The flexible printed circuit includes a bonding region and a chip region, the bonding region is provided with multiple circuit board binding interfaces which are bound to to the multiple panel binding interfaces, the chip region is configured to arrange the integrated circuit chip, and the integrated circuit chip is electrically connected to the multiple circuit board binding interfaces.

Claims

1. An annular display apparatus, comprising:

a display panel, wherein the display panel comprises an annular display region, an outer non-display region extending around an outer side of the display region and an inner non-display region extending around an inner side of the display region, the display region is provided with a plurality of control signal lines, the inner non-display region is provided with a plurality of panel binding interfaces, and the plurality of control signal lines are electrically connected to the plurality of panel binding interfaces respectively;

an integrated circuit chip; and

a flexible printed circuit, wherein the flexible printed circuit comprises a bonding region and a chip region, the bonding region is provided with a plurality of circuit board binding interfaces which are bound to the plurality of panel binding interfaces, the chip region is configured to arrange the integrated circuit chip, and the integrated circuit chip is electrically connected to the plurality of circuit board binding interfaces.

2. The annular display apparatus according to claim 1, wherein:

the bonding region has an annular shape.

3. The annular display apparatus according to claim 2, wherein:

a circumference of an outer ring of the bonding region is greater an a circumference of an inner ring of the inner non-display region.

4. The annular display apparatus according to claim 2, wherein:

a circumference of an inner ring of the bonding region is greater than a circumference of an inner ring of the inner non-display region.

5. The annular display apparatus according to claim 2, wherein:

the bonding region is provided with an opening, the opening extending through the bonding region in a direction which intersects with a circumferential direction of the inner non-display region and is parallel to the flexible printed circuit.

6. The annular display apparatus according to claim 5, wherein:

the opening extends through the flexible printed circuit in a direction perpendicular to the flexible printed circuit.

7. The annular display apparatus according to claim 2, wherein:

the chip region extends from the bonding region toward a hollow region at a center of the annular display apparatus, and the chip region is foldable to a non-display side of the display region.

8. The annular display apparatus according to claim 1, wherein:

the plurality of control signal lines comprise a plurality of first control signal lines and a plurality of second control signal lines extending in a first direction, the plurality of first control signal lines extend from the display region to the inner non-display region and are connected to the panel binding interfaces, and the plurality of second control signal lines do not intersect with the inner non-display region,

the display region is further provided with a plurality of first signal connection lines extending in a second direction, wherein the first direction is intersected with the second direction, and the plurality of first signal connection lines extend from the display region to the inner non-display region and are connected to the panel binding interfaces, and

the plurality of second control signal lines are connected to the plurality of first signal connection lines, respectively.

9. The annular display apparatus according to claim 8, wherein:

the display region comprises a plurality of display pixels and a plurality of thin film transistors configured to control display of the display pixels, each of the plurality of thin film transistor comprises a gate, a source and a drain, and

each of the plurality of first control signal lines and the plurality of second control signal lines is a scan line or a data line, wherein the scan line is connected to the gate, and the data line is connected to the source.

10. The annular display apparatus according to claim 9, wherein:

each of the plurality of first control signal lines and the plurality of second control signal lines is the scan line,

the plurality of control signal lines further comprises a plurality of third control signal lines and a plurality of fourth control signal lines extending in the second direction, wherein the plurality of third control signal lines extend from the display region to the inner non-display region and are connected to the panel binding interfaces, the plurality of fourth control signal lines do not intersect with the inner non-display region, and each of the plurality of third control signal lines and the plurality of fourth control signal lines is the data line,

the display region is further provided with a plurality of second signal connection lines extending in the first direction from the display region to the inner non-display region and are connected to the panel binding interfaces, and

the plurality of fourth control signal lines are connected to the plurality of second signal connection lines, respectively.

11. The annular display apparatus according to claim 10, wherein:

the display panel comprises a first substrate and a second substrate arranged opposite to each other in a third direction, and the plurality of thin film transistors are arranged on the first substrate, the third direction is perpendicular to the first direction and the second direction, and

in the inner non-display region, the first substrate extends toward a center of the hollow region of the annular display apparatus relative to the second substrate, to form a step region, and the plurality of panel binding interfaces are arranged on the step region.

12. The annular display apparatus according to claim 11, wherein:

the plurality of panel binding interface are metal electrodes arranged on the step region, and

the plurality of circuit board binding interface are gold fingers arranged on the bonding region.

13. The annular display apparatus according to claim 12, wherein the first substrate comprises:

a substrate layer;

a first metal layer arranged on a side of the substrate layer close to the second substrate, wherein the gate, the scan line and the plurality of second signal connection lines are arranged in the first metal layer; and

a second metal layer arranged on a side of the first metal layer close to the second substrate, wherein

the source, the drain, the data line, the plurality of first signal connection lines and the metal electrodes are arranged in the second metal layer, and

the plurality of second control signal lines are connected with the plurality of first signal connection lines through via holes, the plurality of fourth control signal lines are connected with the plurality of second signal connection lines through via holes, the plurality of first control signal lines are connected with the metal electrodes through via holes, and the plurality of first signal connection lines are connected with the metal electrodes through via holes.

14. The annular display apparatus according to claim 10, wherein

the plurality of display pixels form a plurality of pixel rows and a plurality of pixel columns, the plurality of pixel rows extend in the first direction and are arranged in the second direction, and the plurality of pixel columns extend in the second direction and are arranged in the first direction,

a first wiring region is disposed between adjacent pixel rows arranged in the second direction, wherein the plurality of first control signal lines or the plurality of second control signal lines are arranged in the first wiring region, and the plurality of second signal connection lines are arranged in the same first wiring region as the plurality of first control signal lines,

a second wiring region is disposed between adjacent pixel columns arranged in the first direction, wherein the plurality of third control signal lines or the plurality of fourth control signal lines are arranged in the second wiring region, and the plurality of first signal connection lines are arranged in the same second wiring region as the plurality of third control signal line.

15. The annular display apparatus according to claim 1, wherein:

the annular display apparatus has a circular annular shape.

16. A display device, comprising:

an annular display apparatus, comprising;

a display panel, wherein the display panel comprises an annular display region, an outer non-display region extending around an outer side of the display region and an inner non-display region extending around an inner side of the display region, the display region is provided with a plurality of control signal lines, the inner non-display region is provided with a plurality of panel binding interfaces, and the plurality of control signal lines are electrically connected to the plurality of panel binding interfaces respectively;

an integrated circuit chip; and

a flexible printed circuit, wherein the flexible printed circuit comprises a bonding region and a chip region, the bonding region is provided with a plurality of circuit board binding interfaces which are bound to the plurality of panel binding interfaces, the chip region is configured to arrange the integrated circuit chip, and the integrated circuit chip is electrically connector to the plurality of circuit hoard binding interfaces.