# US 12,216,356 B2 · Display device and mobile terminal

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- Number: US 12,216,356 B2
- Document ID: US12216356B2
- Status: Granted
- Kind: B2
- Application number: 17/754,382
- Filed: 2022-03-17
- Published: 2024-04-04
- Granted: 2025-02-04
- Earliest claimed: 2022-03-10
- Assignees: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Inventors: Shaojun Hou; Chao Wang; Guanghui Liu
- Web page: https://patentgrep.com/patent/US12216356B2

## CPC

- G02F 1/133613: {characterized by the sequence of light sources}
- G02B 6/0055: {Reflecting element, sheet or layer}
- G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources}
- G02B 6/0073: {Light emitting diode [LED]}
- G02F 1/1335: Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F 1/133524: {Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides}
- G02F 1/133605: {including specially adapted reflectors}
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- Y02D 30/70: in wireless communication networks
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

The present application provides a display device and a mobile terminal. The display device includes a display panel and a backlight module arranged on one side of the display panel. The display panel includes a first display area, a second display area arranged on one side of the first display area, and a third display area arranged within the second display area. The backlight module includes a via area, and the via area is arranged corresponding to the third display area. The backlight module includes a first light source arranged corresponding to the first display area and a second light source arranged corresponding to the second display area.

## Claims

### Claim 1

A display device, comprising:
a display panel comprising a first display area, a second display area, and a third display area, wherein the second display area is arranged on one side of the first display area, and the third display area is arranged within the second display area; and
a backlight module arranged on one side of the display panel, wherein the backlight module is provided with a via area, the via area is arranged corresponding to the third display area, and the backlight module comprises a plurality of first light sources arranged corresponding to the first display area and a plurality of second light sources arranged corresponding to the second display area;
wherein in a first state, the first light sources are turned on, and the second light sources are turned on; and in a second state, the first light sources are turned on, and the second light sources are turned off;
wherein the first light sources and the second light sources are disposed on one side of the light guide plate, the first light sources and the second light sources are arranged along the second direction, and the first light sources and the second light sources are disposed on a same side;
wherein the backlight module further comprises a light guide plate and a compensation backlight unit, the compensation backlight unit is disposed on one side of the light guide plate away from the display panel, and the compensation backlight unit is disposed corresponding to the third display area;
wherein the compensation backlight unit comprises a compensation light source and a liquid crystal layer, the compensation light source is arranged in a ring shape, a first electrode disposed on one side of the liquid crystal layer close to the display panel, a second electrode disposed on one side of the liquid crystal layer away from the display panel, and the compensation light source surrounds the liquid crystal layer;
in the light guide plate, a light propagation ability in a first direction is greater than a light propagation ability in a second direction; and
in the second direction, the first display area is disposed on one side of the second display area, the first direction intersects with the second direction, and the first direction and the second direction are parallel to a light emitting surface of the light guide plate.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the light guide plate comprises a light guide area and a light transmissive area, the light guide area is disposed corresponding to the first display area and the second display area, the light transmissive area is arranged corresponding to the third display area, and the light guide area is provided with a plurality of first microstructures.

### Claim 3 (depends on 2)

The display device according to claim 2, wherein on one side of the light guide plate close to the display panel, the light guide plate comprises a surface provided with the first microstructures.

### Claim 4 (depends on 2)

The display device according to claim 2, wherein on one side of the light guide plate away from the display panel, the light guide plate comprises a surface provided with the first microstructures.

### Claim 5 (depends on 2)

The display device according to claim 2, wherein the first microstructures comprise a plurality of grooves, the grooves are arranged at intervals along the first direction, and each of the groove extends along the second direction.

### Claim 6 (depends on 5)

The display device according to claim 5, wherein a cross-section of each first microstructure along the first direction is V-shaped or arc shaped.

### Claim 7 (depends on 2)

The display device according to claim 2, wherein light transmittance of the light transmissive area of the light guide plate is greater than light transmittance of the light guide area of the light guide plate.

### Claim 8 (depends on 2)

The display device according to claim 2, wherein the backlight module further comprises a reflective film and an optical film, the reflective film is disposed on one side of the light guide plate away from the display panel, the optical film is disposed on one side of the light guide plate close to the display panel, a first via hole is defined in the reflective film, a second via hole is defined in the optical film, and the first via hole and the second via hole are defined corresponding to the light transmissive area.

### Claim 9 (depends on 8)

The display device according to claim 8, wherein the backlight module further comprises a frame, the frame is disposed on one side of the reflective film away from the display panel, a third via hole is defined in the frame, and the third via hole is defined corresponding to the light transmissive area.

### Claim 10 (depends on 1)

The display device according to claim 1, wherein the first light sources and the second light sources are disposed on two opposite sides of the light guide plate in the first direction.

### Claim 11 (depends on 1)

The display device according to claim 1, wherein the backlight module comprises the first light sources and the second light sources, and a buffer interval is present between the first light source closest to the second display area and the second light source closest to the first display area.

### Claim 12 (depends on 11)

The display device according to claim 11, wherein the buffer interval ranges from 1 millimeter (mm) to 5 mm.

### Claim 13 (depends on 1)

The display device according to claim 1, wherein in the second direction, a width of the second display area is greater than a width of the third display area.

### Claim 14 (depends on 13)

The display device according to claim 13, wherein the width of the second display area ranges from 5 mm to 20 mm, and the width of the third display area ranges from 4 mm to 7 mm.

### Claim 15 (depends on 1)

A mobile terminal, comprising an electronic component and the display device of claim 1, wherein the electronic component is arranged corresponding to the third display area.