# US 12,181,749 B2 · Backlight module and display device

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- Number: US 12,181,749 B2
- Document ID: US12181749B2
- Status: Granted
- Kind: B2
- Application number: 18/609,637
- Filed: 2024-03-19
- Published: 2024-07-11
- Granted: 2024-12-31
- Earliest claimed: 2021-11-26
- Assignees: Hisense Visual Technology Co., Ltd.
- Applicants: Hisense Visual Technology Co., Ltd.
- Inventors: Qiang Du; Yuxin Zhang; Zhenhua Pang; Guangxue Liu; Botao Li
- Web page: https://patentgrep.com/patent/US12181749B2

## CPC

- G02F 1/133612: {Electrical details}
- G02F 1/133603: {with LEDs}
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix}
- H05K 5/0069: {having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing}
- H05K 5/0082: {specially adapted for transmission control units, e.g. gearbox controllers}
- G09G 2300/0426: Layout of electrodes and connections
- 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
- 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)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A backlight module and a display apparatus are disclosed. The backlight module includes a circuit board, a driving chip on the circuit board, and a plurality of light-emitting areas corresponding to the driving chip. The driving chip includes a first pin and a third pin located on a first side of the driving chip, and a second pin and a fourth pin located on a second side of the driving chip, the first pin and the second pin are electrically connected inside the driving chip, and the third pin and the fourth pin are electrically connected inside the driving chip; the first side and the second side are opposite sides. The driving chip further includes a plurality of control terminals on a third side of the driving chip, the plurality of control terminals are correspondingly connected with the plurality of light-emitting areas.

## Claims

### Claim 1

A backlight module, comprising:
a circuit board;
a driving chip on the circuit board; and
a plurality of light-emitting areas corresponding to the driving chip;
wherein
the driving chip comprises a first pin and a third pin located on a first side of the driving chip, and a second pin and a fourth pin located on a second side of the driving chip; wherein the first pin and the second pin are electrically connected inside the driving chip, and the third pin and the fourth pin are electrically connected inside the driving chip; the first side and the second side are opposite sides;
the driving chip further comprises a plurality of control terminals on a third side of the driving chip; wherein the plurality of control terminals are correspondingly connected with the plurality of light-emitting areas.

### Claim 2 (depends on 1)

The backlight module according to claim 1, wherein
a plurality of driving chips arranged in an array are on the circuit board;
a fifth pin and a sixth pin between adjacent driving chips among the plurality of driving chips in a same row are connected in series, and a seventh pin and an eighth pin between adjacent driving chips among the plurality of driving chips in the same row are connected in series; wherein the fifth pin and the first pin are of a same type, the sixth pin and the second pin are of a same type, the seventh pin and the third pin are of a same type, the eighth pin and the fourth pin are of a same type;
for last driving chips ranked last in different rows, sixth pins of the last driving chips in adjacent rows are connected, and eighth pins of the last driving chips in the adjacent rows are connected; the sixth pins of the last driving chips are connected by a jumper wire, or the eighth pins of the last driving chips are connected by a jumper wire;
for first driving chips ranked first in different rows, fifth pins of the first driving chips in adjacent rows are connected, and seventh pins of the first driving chips in the adjacent rows are connected; the fifth pins of the first driving chips are connected by a jumper wire, or the seventh pins of the first driving chips are connected by a jumper wire.

### Claim 3 (depends on 1)

The backlight module according to claim 1, wherein
the driving chip further comprises a ninth pin and a tenth pin;
the first pin, the third pin and the ninth pin are sequentially arranged on the first side of the driving chip; and
the second pin, the fourth pin and the tenth pin are sequentially arranged on the second side of the driving chip;
wherein the first pin, the second pin, the ninth pin and the tenth pin are electrically connected inside the driving chip.

### Claim 4 (depends on 3)

The backlight module according to claim 3, wherein
a plurality of driving chips arranged in an array are on the circuit board;
for a first group of driving chips among the plurality of driving chips in a same row, an eleventh pin and a twelfth pin between adjacent driving chips among the first group of driving chips are connected in series; a thirteenth pin and a fourteenth pin between adjacent driving chips among the first group of driving chips are connected in series;
for last driving chips ranked last in different rows, twelfth pins of the last driving chips in adjacent rows are connected, and a fourteenth pin and a fifteenth pin of the last driving chips in the adjacent rows are connected;
for first driving chips ranked first in different rows, eleventh pins of the first driving chips in adjacent rows are connected, and a thirteenth pin and a sixteenth pin of the first driving chips in the adjacent rows are connected;
wherein the eleventh pin and the third pin are of a same type, the twelfth pin and the fourth pin are of a same type, the thirteenth pin and the first pin are of a same type, the fourteenth pin and the second pin are of a same type, the fifteenth pin and the sixth pin are of a same type, the sixteenth pin and the fifth pin are of a same type.

### Claim 5 (depends on 4)

The backlight module according to claim 4, wherein the thirteenth pin, the fourteenth pin, the sixteenth pin and the fifteenth pin are configured to transmit a control signal for a light-emitting area in the backlight module; and the eleventh pin and the twelfth pin are configured to transmit a clock signal for a light-emitting area in the backlight module.

### Claim 6 (depends on 4)

The backlight module according to claim 4, wherein the thirteenth pin, the fourteenth pin, the sixteenth pin and the fifteenth pin are configured to transmit a clock signal for a light-emitting area in the backlight module, and the eleventh pin and the twelfth pin are configured to transmit a control signal for a light-emitting area in the backlight module.

### Claim 7 (depends on 1)

The backlight module according to claim 1, wherein
the plurality of control terminals comprise a common terminal and a plurality of output terminals;
an end of the plurality of light-emitting areas corresponding to the driving chip is connected with the common terminal of the driving chip, and other ends of the light-emitting areas corresponding to the driving chip are respectively connected with the plurality of output terminals of the driving chip.

### Claim 8 (depends on 7)

The backlight module according to claim 7, wherein the driving chip further comprises a plurality of control terminals on a fourth side of the driving chip, and the plurality of control terminals on the fourth side are correspondingly connected with the light-emitting areas.

### Claim 9 (depends on 8)

The backlight module according to claim 8, wherein the plurality of control terminals of the driving chip on the third side of the driving chip comprise a first common terminal, a first output terminal and a second output terminal; the plurality of control terminals of the driving chip on the fourth side of the driving chip comprise a second common terminal, a third output terminal and a fourth output terminal;
the driving chip is correspondingly connected with a first light-emitting area, a second light-emitting area, a third light-emitting area and a fourth light-emitting area; an end of the first light-emitting area and an end of the second light-emitting area are respectively connected with the first common terminal; the other end of the first light-emitting area is connected with the first output terminal; the other end of the second light-emitting area is connected with the second output terminal; an end of the third light-emitting area and an end of the fourth light-emitting area are respectively connected with the second common terminal; the other end of the third light-emitting area is connected with the third output terminal; the other end of the second light-emitting area is connected with the fourth output terminal.

### Claim 10 (depends on 9)

The backlight module according to claim 9, wherein the first common terminal is located between the first output terminal and the second output terminal; the second common terminal is located between the third output terminal and the fourth output terminal.

### Claim 11 (depends on 10)

The backlight module according to claim 10, wherein an end of the light-emitting area is a positive common terminal of the light-emitting area.

### Claim 12 (depends on 10)

The backlight module according to claim 10, wherein an end of the light-emitting area is a negative common terminal of the light-emitting area.

### Claim 13 (depends on 1)

A display apparatus, comprising: the backlight module according to claim 1, a main board, and a power supply;
wherein the power supply is connected with the backlight module and the main board, and is configured to provide a power supply signal;
the main board is connected with the backlight module, and is configured to send a control signal and a clock signal to the backlight module, so that the backlight module emits light based on the clock signal and the control signal.