CN211123556U

CN211123556U - Curved surface screen backlight unit and terminal equipment

Info

Publication number: CN211123556U
Application number: CN201921684528.XU
Authority: CN
Inventors: 张小齐; 胡友; 庞春果
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-28
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a curved surface screen backlight unit and terminal equipment, backlight unit is towards curved surface structure of shady face bending, including frame, light guide plate, optics diaphragm and light source, the light guide plate includes the plane district, is located respectively the inclined plane district on the relative both sides limit of plane district, connect respectively the plane district and two the two joining regions of inclined plane district, two the inclined plane district is located the both sides of light guide plate light source end the utility model discloses carry out the design of buckling to the backlight unit structure, utilize side income formula backlight unit to replace traditional O L ED screen to light as the backlight of curved surface screen, the cost is lower, can reach the effect of traditional O L ED curved surface screen.

Description

Curved surface screen backlight unit and terminal equipment

Technical Field

The utility model relates to a liquid crystal display field especially relates to a curved surface screen backlight unit and terminal equipment.

Background

The flexible O L ED enables the curved screen mobile phone with high screen occupation ratio in the last two years to be basically updated to a waterfall screen from a curved screen in the latest mobile phone release by a flexible O L ED. (the screen almost vertically hangs down from the side of the mobile phone, an unusual surrounding and full-screen visual effect is given, and the latest waterfall screen mobile phone of OPPO is referred), the design close to the full screen and the borderless brought by the large-curvature curved surface enable the screen occupation ratio of the mobile phone to be closer to 100% visually, even the limit of 2D is thoroughly broken through.

But the O L ED screen is adopted at present to realize a curved screen or a waterfall screen, and the light source using the side-in backlight module as the curved screen is little or even none.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a curved surface screen backlight unit and terminal equipment.

The technical scheme of the utility model as follows: the utility model provides a curved surface screen backlight unit, backlight unit is the curved surface structure of orientation shadoof bending, includes: frame, light guide plate, optics diaphragm and light source, the light guide plate includes: the light guide plate comprises a plane area, inclined plane areas and two connecting areas, wherein the inclined plane areas are respectively positioned on two opposite side edges of the plane area, the two connecting areas are respectively connected with the plane area and the two inclined plane areas, and the two inclined plane areas are positioned on two sides of a light source end of the light guide plate.

Further, the connecting region is a curved surface structure.

Further, an extension of the planar area intersects an extension of the beveled area and forms an angle, which is an acute angle.

Further, the angle ranges from 5 ° to 90 °.

Further, the frame is consistent with the light guide plate in shape, and the light guide plate is of an integrally formed structure.

Further, the frame is a rubber-iron integrated frame.

The optical film comprises a reflecting sheet, a diffusion sheet and a brightness enhancement sheet, and can be bent to adapt to the structure of the light guide plate.

The light source side is attached to the light incident surface of the light guide plate corresponding to the plane area, or the light source side is attached to the whole light incident surface of the light guide plate.

Further, when the light source side is attached to the light incident surface of the whole light guide plate, the light source is of an integral structure or a non-integral structure.

Furthermore, an optical adhesive layer is arranged between the edge of the optical film and the inclined plane area of the light guide plate, and the optical adhesive layer is OA optical adhesive.

Further, a black ink layer or a gray ink layer is printed on the edge of the diffusion sheet or the brightness enhancement sheet.

The utility model also provides a terminal equipment, include by lower supreme backlight unit, liquid crystal module and the printing opacity apron that stacks gradually, backlight unit is as above curved surface screen backlight unit, liquid crystal module and printing opacity apron all with backlight unit's shape is unanimous.

Adopt above-mentioned scheme, the utility model discloses carry out the design of buckling to the backlight unit structure, utilize side income formula backlight unit to replace traditional O L ED screen to light as the backlight of curved surface screen, the cost is lower, can reach the effect of traditional O L ED curved surface screen.

Drawings

FIG. 1 is a schematic view of a light guide plate according to the present invention;

FIG. 2 is a front view of the light guide plate of the present invention;

FIG. 3 is a side view of the light guide plate of the present invention mounting a light source;

fig. 4 is a schematic structural diagram of the terminal device of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the terminal device of the present invention;

fig. 6 is a schematic structural diagram of another embodiment of the terminal device of the present invention;

fig. 7 is a schematic structural diagram of another embodiment of the terminal device of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, the present invention provides a curved backlight module 100, which is a curved structure curved toward a backlight surface, and includes a frame 20, a light guide plate 10, an optical film 30, and a light source 40, where the light guide plate 10 includes a planar area 1, inclined areas 2 respectively located on two opposite sides of the planar area 1, and two connecting areas 3 respectively connecting the planar area 1 and the two inclined areas 2, where the two inclined areas 2 are located on two sides of a light source end of the light guide plate, and the light guide plate 1 is an integrally formed structure, specifically, in this embodiment, the connecting areas 3 are curved structures, which can make the planar area and the inclined area better transition, and improve a display effect of a terminal device, an extension surface of the planar area 1 intersects with an extension surface of the inclined areas 2, and forms an angle α, the angle α is an acute angle, specifically, in this embodiment, the angle α ranges from 5 ° to 90 °, the inclined areas 2 incline downward along a horizontal plane where the planar area 1 is located, and the connecting areas 3 are combined, so that the connecting areas 10 are located perfectly, and a dot structure is disposed on a light source edge of the light guide plate, and a dot structure for processing light source.

The frame 20 is in accordance with the shape of the light guide plate 10, and also has a curved shape corresponding to the shape of the light guide plate 10, so that the whole backlight module 100 presents a curved surface structure curved toward the backlight surface, specifically, in this embodiment, the frame 20 is an integrated frame made of rubber and iron.

The light source 40 is laterally attached to the light incident surface of the light guide plate 10, the bending length of the inclined surface region 2 of the light guide plate of the mobile phone is generally 3-5mm, the horizontal distance is about 1mm, L ED light sources are not needed, and only the plane region 1 is provided with the light source 40, as shown in fig. 3.

The optical film 30 includes a reflective sheet, a diffusion sheet, and a brightness enhancement sheet, and the optical film 30 can be bent to adapt to the structure of the light guide plate 10. The reflective sheet, the diffusion sheet, and the brightness enhancement sheet are structurally unchanged, and the optical film 30 is disposed on the surface of the light guide plate 10 and can be bent to correspond to the shape of the light guide plate 10 when assembled into the backlight module 100. In order to prevent the membranes from sliding, an optical adhesive layer is disposed between the optical membrane 30 and the light guide plate 10, mainly between the edge of the optical membrane 30 and the inclined surface region 2 of the light guide plate 10, and the optical adhesive layer may be an OA optical adhesive.

Because the backlight module 100 has a bending angle, the edges of both sides have a bright edge phenomenon, specifically, in this embodiment, the edge of the diffusion sheet or the brightness enhancement sheet is printed with black or gray ink, so as to solve the bright edge phenomenon.

Referring to fig. 4 to 7, the present invention further provides a terminal device, which includes a backlight module 100, a liquid crystal module 200 and a transparent cover plate 300 stacked in sequence from bottom to top, wherein the liquid crystal module 200 and the transparent cover plate 300 are both in the same shape as the backlight module 100 and are both in a curved surface structure.

Referring to fig. 5 to 7, the lengths of the connection region 3 and the inclined region 2 and the angle α between the inclined region and the planar region in the light guide plate 10 can be changed according to different design requirements, so as to meet the use requirements of different users by changing the angle α between the inclined region and the planar region to about 10 °, the angle is smaller, the length of the connection region 3 is shorter, the length of the inclined region 2 is longer, and the two edges of the obtained terminal device are slightly inclined downward, as shown in fig. 5.

To sum up, the utility model discloses carry out the design of buckling to the backlight unit structure, utilize side income formula backlight unit to replace traditional O L ED screen to light as the backlight of curved surface screen, the cost is lower, can reach the effect of traditional O L ED curved surface screen.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a curved surface screen backlight unit which characterized in that, backlight unit is the curved surface structure of orientation shaddock face, includes: frame, light guide plate, optics diaphragm and light source, the light guide plate includes: the light guide plate comprises a plane area, inclined plane areas and two connecting areas, wherein the inclined plane areas are respectively positioned on two opposite side edges of the plane area, the two connecting areas are respectively connected with the plane area and the two inclined plane areas, and the two inclined plane areas are positioned on two sides of a light source end of the light guide plate.

2. The backlight unit as claimed in claim 1, wherein the connecting region is a curved structure.

3. The curved-screen backlight module as claimed in claim 1, wherein the extension of the planar area intersects the extension of the inclined area to form an acute angle.

4. The curved-surface-screen backlight module as claimed in claim 3, wherein the angle is in the range of 5 ° to 90 °.

5. The curved-screen backlight module as claimed in any one of claims 1 to 4, wherein the frame is in conformity with the light guide plate, and the light guide plate is of an integrally formed structure.

6. The curved-screen backlight module as claimed in any one of claims 1 to 4, wherein the frame is an integrated frame of rubber and iron;

the optical film comprises a reflecting sheet, a diffusion sheet and a brightness enhancement sheet, and can be bent to adapt to the structure of the light guide plate;

7. The curved-screen backlight module as claimed in claim 6, wherein the light source is of a unitary or non-unitary structure when the light source side is attached to the light incident surface of the light guide plate.

8. The curved-screen backlight module as claimed in claim 7, wherein an optical adhesive layer is disposed between the edge of the optical film and the inclined surface region of the light guide plate, and the optical adhesive layer is OA optical adhesive.

9. The curved-screen backlight module as claimed in claim 6, wherein a black ink layer or a gray ink layer is printed on the edge of the diffuser or the brightness enhancement film.

10. A terminal device is characterized by comprising a backlight module, a liquid crystal module and a light-transmitting cover plate which are sequentially stacked from bottom to top, wherein the backlight module is the curved-surface screen backlight module of any one of claims 1 to 9, and the liquid crystal module and the light-transmitting cover plate are consistent with the backlight module in shape.