# US 10,371,996 B2 · Display device

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- Number: US 10,371,996 B2
- Document ID: US10371996B2
- Status: Granted
- Kind: B2
- Application number: 16/161,091
- Filed: 2018-10-16
- Published: 2019-02-14
- Granted: 2019-08-06
- Earliest claimed: 2017-10-31
- Assignees: Wuhan Tianma Micro-Electronics Co., Ltd.
- Applicants: Wuhan Tianma Micro-Electronics Co., Ltd.
- Inventors: Linyan Guan; Zhiwei Zheng; Kangpeng Yang; Yumin Xu
- Web page: https://patentgrep.com/patent/US10371996B2

## CPC

- G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels}
- G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- H05K 1/028: {Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence)}
- H05K 1/189: characterised by the use of flexible or folded printed circuits
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- G02F 2201/56: Substrates having a particular shape, e.g. non-rectangular
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 3/36: using liquid crystals
- G09G 2310/0202: Addressing of scan or signal lines
- H05K 2201/056: Folded around rigid support or component
- H05K 2201/10128: Display
- H05K 2201/10136: Liquid Crystal display [LCD]
- H10K 59/82: Interconnections, e.g. terminals (H10K59/131, H10K59/179 take precedence)
- H10K 77/10: Substrates, e.g. flexible substrates
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

Provided are a display device and a display device. The display device includes: a display panel, including display area and non-display area surrounding display area; and a flexible circuit board. The non-display area includes first binding area and second binding area located on two opposite sides of display area along first direction, which is parallel to the display panel. The display panel has display surface and back surface. The flexible circuit board is disposed on back surface of display panel. A driving chip is fixed on the flexible circuit board. The flexible circuit board has first end and second end. When the flexible circuit board is in bent state, first end is bent and then extended to display surface of the display panel and bound to first binding area, and second end is bent and then extended to display surface of the display panel and bound to second binding area.

## Claims

### Claim 1

A display device, comprising:
a display panel, comprising a display area and a non-display area surrounding the display area; and
a flexible circuit board,
wherein the non-display area comprises a first binding area and a second binding area located on two opposite sides of the display area along a first direction, the first direction is parallel to a plane of the display panel, and the display panel has a display surface and a back surface, and
wherein the flexible circuit board is disposed on the back surface of the display panel, a driving chip is fixed on the flexible circuit board, the flexible circuit board has a first end and a second end, when the flexible circuit board is in a bent state, the first end is bent and then extended to the display surface of the display panel and bound to the first binding area, and the second end is bent and then extended to the display surface of the display panel and bound to the second binding area,
wherein the flexible circuit board comprises a first wiring layer and a second wiring layer disposed on a side of the first wiring layer away from the display panel, and the driving chip is disposed on a side of the second wiring layer away from the first wiring layer, and
wherein at least one output signal line is disposed in the first wiring layer, the driving chip provides a signal to the display panel through the at least one output signal line; and wherein at least one input signal line is disposed in the second wiring layer, and the driving chip receives an external signal through the at least one input signal line.

### Claim 2 (depends on 1)

The display device according to claim 1,
wherein the driving chip extends in a second direction, and the second direction is parallel to the plane of the display panel and perpendicular to the first direction,
wherein the driving chip has a first edge and a second edge that are disposed opposite to each other in the first direction, a plurality of input pins is arranged on the first edge along the second direction, and a plurality of output pins is arranged on the second edge along the second direction, and
wherein the at least one input signal line is correspondingly connected to the plurality of input pins, and the at least one output signal line is correspondingly connected to the plurality of output pins through at least one through hole.

### Claim 3 (depends on 2)

The display device according to claim 2,
wherein the first wiring layer is divided into a first wiring area and a second wiring area, when the flexible circuit board is in an unfolded state, the first end, the first wiring area, the second wiring area and the second end are sequentially arranged along the first direction,
wherein the at least one output signal line comprises at least one first output signal line and at least one second output signal line, and
wherein the at least one first output signal line is located in the first wiring area, and the at least one second output signal line is located in the second wiring area.

### Claim 4 (depends on 2)

The display device according to claim 2, wherein an orthographic projection of the driving chip on the display panel is located at a geometric center of the display panel.

### Claim 5 (depends on 4)

The display device according to claim 4,
wherein the first binding area is provided with a plurality of first binding boards arranged along the second direction, and the second binding area is provided with a plurality of second binding boards arranged along the second direction,
wherein the display area is provided with N data lines extending along the first direction, and
wherein n data lines of the N data lines are correspondingly connected to the plurality of first binding boards, and m data lines of the N data lines are correspondingly connected to the plurality of second binding boards; and N, n and m are positive integers, and n+m=N.

### Claim 6 (depends on 5)

The display device according to claim 5,
wherein the N data lines comprises a 1st data line, a 2nd data line, a 3rd to a Nth data line arranged along the second direction, and
wherein odd-numbered data lines are connected to the plurality of first binding boards, and even-numbered data lines are connected to the plurality of second binding boards.

### Claim 7 (depends on 5)

The display device according to claim 5,
wherein the display area is provided with a plurality of sets of data lines, and one of the plurality of sets of data lines comprises at least two of the N data lines sequentially arranged along the second direction,
wherein the plurality of sets of data lines comprises a first set of data lines and a second set data lines, data lines of the first set are correspondingly connected to the plurality of first binding boards, and data lines of the second set are correspondingly connected to the plurality of second binding boards, and
wherein the first set of data lines and the second set of data lines are alternately arranged along the second direction.

### Claim 8 (depends on 5)

The display device according to claim 5, wherein the display area at least partially has a first arc boundary between the display area and the first binding area or the second binding area.

### Claim 9 (depends on 8)

The display device according to claim 8, wherein the display area is a circular display area.

### Claim 10 (depends on 9)

The display device according to claim 9, wherein the N data lines comprise a long data line and a short data line, and a length of the long data line is larger than a length of the short data line; and
wherein an area of the first binding board or the second binding board connected to the long data line is a first area, an area of the first binding board or the second binding board connected to the short data line is a second area, and the first area is smaller than the second area.

### Claim 11 (depends on 10)

The display device according to claim 10,
wherein the first binding area has a first symmetry axis extending along the first direction, and in the second direction, a respective area of each first binding board gradually becomes larger from the first symmetry axis to an edge of the first binding area, and
wherein the second binding area has a second symmetry axis extending along the first direction, and in the second direction, a respective area of each second binding board gradually becomes larger from the second symmetry axis to an edge of the second binding area.

### Claim 12 (depends on 10)

The display device according to claim 10, wherein the at least one output signal line comprises a short output signal line and a long output signal line, and a length of the short output signal line is smaller than a length of the long output signal line; and wherein the short output signal line provides a signal to the long data line, and the long output signal line provides a signal to the short data line.