CN212460268U

CN212460268U - Backlight module device for realizing ultra-low OD by matching LED with lens

Info

Publication number: CN212460268U
Application number: CN202021749915.XU
Authority: CN
Inventors: 翟标; 王科; 吴疆; 彭友
Original assignee: Coreach Electronic Technology Co ltd
Current assignee: Coreach Electronic Technology Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-02-02
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a backlight module device that LED collocation lens realized ultralow OD, including lens body, LED support, solid fixed ring, luminescence seat, first lens column foot and second lens column foot, the lens body contains lens concave surface and lens convex surface, lens convex surface fixed mounting is close to the position in the middle in the upper end of lens concave surface, the inside of lens concave surface is close to the position fixed mounting in the middle of the fixed ring in the middle, first lens column foot and second lens column foot fixed mounting are close to the position of four apex angles at the lower extreme of lens concave surface, luminescence seat fixed mounting is close to the position in the middle at the lower extreme of lens concave surface, the lower extreme fixed mounting of luminescence seat has the LED support; the scheme of the ultrathin OD3-OD5 direct type backlight module is realized, and the problems of heavy granular sensation of backlight picture light spots and uneven picture distribution in the ultrathin OD scheme are solved; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.

Description

Backlight module device for realizing ultra-low OD by matching LED with lens

Technical Field

The utility model relates to a TV set light source application technique field especially relates to a backlight unit device that LED collocation lens realized ultralow OD.

Background

In the direct type backlight which is common in the market at present, the adopted scheme is that an EMC bracket LED is arranged on the upper surface of a lamp strip, the lens is matched above the LED to light as the light source of the liquid crystal screen, the design is influenced by the LED bracket and the optical lens, so that the height of the cavity of the television is higher, generally above OD10, moreover, the LED of the EMC bracket has limited bearable current, the brightness of the whole machine is improved to a limited extent, the pursuit of high-end televisions or television enthusiasts for vision can not be met, the POB packaged LED has smaller volume and lower height, the bearable current is limited, but the lamp arrangement scheme of a plurality of LEDs in different areas is adopted, can further improve the backlight brightness, meet the brightness requirement of the whole machine, have smaller light source volume and height, and match with smaller lenses of optical design, therefore, the ultra-thin television design with the height of OD3-OD5 is realized, and the television enthusiasts are more fascinated and have rich visual experience.

The existing backlight module device has certain defects: the scheme of the ultrathin OD3-OD5 direct type backlight module cannot be realized, and the problems of heavy granular sensation of backlight picture light spots and uneven picture distribution in the ultrathin OD scheme are solved; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.

SUMMERY OF THE UTILITY MODEL

The utility model provides a backlight unit device of ultralow OD is realized to LED collocation lens mainly solves following technical problem:

how to realize the scheme of the ultrathin OD3-OD5 direct type backlight module and solve the problems of heavy sense of light spot particles of a backlight picture and uneven distribution of the picture of the ultrathin OD scheme; and makes the light source smaller and the backlight picture more uniform and brighter at ultra-low OD.

The purpose of the utility model can be realized by the following technical scheme:

a backlight module device for realizing ultra-low OD by matching an LED with a lens comprises a lens body, an LED support, a fixing ring, a light emitting seat, a first lens column base and a second lens column base, wherein the lens body comprises a lens concave surface and a lens convex surface, the lens convex surface is fixedly arranged at the upper end of the lens concave surface close to the middle position, the fixing ring is fixedly arranged at the position inside the lens concave surface close to the middle position, the first lens column base and the second lens column base are fixedly arranged at the lower end of the lens concave surface close to four vertex angles, the light emitting seat is fixedly arranged at the lower end of the lens concave surface close to the middle position, and the LED support is fixedly arranged at the lower end of the light emitting seat;

the light-emitting seat comprises a PPA bracket, a light-emitting cup opening and a light-emitting lamp, the light-emitting cup bracket is fixedly arranged on the inner surface of the PPA bracket, and the light-emitting lamp and the light-emitting cup opening are both arranged inside the light-emitting cup bracket.

Furthermore, the luminescent lamp and the luminescent base are packaged through a POB, and the convex surface of the lens is fixedly connected with the concave surface of the lens through a fixing ring.

Furthermore, the number of the first lens column bases and the number of the second lens column bases are two, and the first lens column bases and the second lens column bases are symmetrically arranged and distributed at the lower end of the concave surface of the lens.

Furthermore, the convex surface of the lens is in a semi-elliptical shape, and the opening of the luminous cup is in a rectangular shape.

Furthermore, a light hole is formed in the position, close to the middle, of the upper end of the concave surface of the lens.

The utility model has the advantages that:

in the utility model, through the matching use of the arranged lens concave surface, the lens convex surface, the LED bracket, the fixing ring and the luminous seat, the scheme of the ultrathin OD3-OD5 direct type backlight module can be realized, and the problems of heavy granular sensation of backlight picture facula and uneven picture distribution of the ultrathin OD scheme are solved; the POB packaging enables the light source of the light-emitting lamp to be smaller, and the light rays emitted by the light source can be enabled to be more uniform in backlight picture and higher in brightness under the ultra-low OD by matching with a special design development lens;

the backlight module device can also be applied to a multi-partition lamp panel, so that the light source is controlled in partitions, the backlight of the television is displayed, the picture is more bright in color, the picture is dynamic and vivid, and the visual impact of bright eyes is provided for a viewer;

the brightness improvement of the conventional direct type backlight scheme is limited, and the dynamic experience of the picture is limited, so that the utility model can improve the overall backlight brightness, and improve the backlight uniformity and the picture saturation of the overall picture;

edge LED on the straight following formula lamp strip of traditional reflection formula has certain distance apart from TV set backplate cavity edge, and four angles of TV set have the dark space, hardly transfer lens to remove and solve this defect, the utility model discloses a lens design, the light source can be more nearly from the backplate edge, solves the problem of dark angle.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a backlight module device for realizing ultra-low OD by using an LED with a lens according to the present invention;

fig. 2 is a schematic connection cross-sectional view of the PPA bracket and the light-emitting cup bracket according to the present invention.

In the figure: 1. a lens concave surface; 2. a lens convex surface; 3. an LED support; 4. a fixing ring; 5. a light emitting base; 501. a PPA scaffold; 502. a light emitting cup holder; 503. a luminous cup mouth; 6. a first lens column base; 7. a second lens pedestal.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a backlight module device with an ultra-low OD realized by an LED in combination with a lens includes a lens body, an LED support 3, a fixing ring 4, a light-emitting base 5, a first lens column base 6 and a second lens column base 7, wherein the lens body includes a lens concave surface 1 and a lens convex surface 2, the lens convex surface 2 is fixedly installed at a position near the middle of the upper end of the lens concave surface 1, the fixing ring 4 is fixedly installed at a position near the middle inside of the lens concave surface 1, the first lens column base 6 and the second lens column base 7 are fixedly installed at positions near four vertex angles of the lower end of the lens concave surface 1, the light-emitting base 5 is fixedly installed at a position near the middle of the lower end of the lens concave surface 1, and the LED support 3 is fixedly installed at the lower end of the light-emitting base;

the light-emitting base 5 comprises a PPA support 501, a light-emitting cup support 502, a light-emitting cup opening 503 and a light-emitting lamp, wherein the light-emitting cup support 502 is fixedly arranged on the inner surface of the PPA support 501, and the light-emitting lamp and the light-emitting cup opening 503 are both arranged inside the light-emitting cup support 502.

The luminescent lamp and the luminescent base 5 are packaged through POB, and the lens convex surface 2 is fixedly connected with the lens concave surface 1 through a fixing ring 4.

The number of the first lens column bases 6 and the number of the second lens column bases 7 are two, and the first lens column bases 6 and the second lens column bases 7 are symmetrically arranged and distributed at the lower end of the lens concave surface 1.

The convex surface 2 of the lens is semi-elliptical, and the opening 503 of the light-emitting cup is rectangular.

And a light hole is formed at the position, close to the middle, of the upper end of the lens concave surface 1.

The utility model discloses a theory of operation does: the light source of the luminescent lamp can be an LED light source, a PPA bracket packaged by POB and having a 1.8 cup mouth is selected, and the PPA material can resist the continuous high temperature of 200 ℃ and can also keep good dimensional stability; the POB packaging is a mainstream of a packaging boundary, and the POB packaging is a commonly used packaging means by small and medium-sized full-automatic dispensing machines and full-automatic glue-pouring machines manufacturers;

on the LED light source, light rays emitted by the LED light source penetrate through the lens body, so that the divergence angle of the light rays after penetrating through the lens body is larger, the light rays are more uniformly diffused on the panel, the picture is clearer and tidier, and the contrast and the uniformity are improved;

when the existing scheme does not use a newly developed lens body, the angle of light divergence is small, so that the brightness is low; when the lens body in the embodiment of the utility model is used, the light rays pass through the lens concave surface 1 and the lens convex surface 2, so that the angle of light ray divergence is larger, and the brightness is higher; the brightness of the module of the embodiment of the utility model can be as high as 500nit, and the uniformity can only reach about 65; the module in the embodiment of the utility model has the advantages that the brightness can reach 1000nit, and the uniformity can be improved to more than 85%;

the embodiment of the utility model can reduce the profile of the lens body, so that the divergence range of the light source can be more concentrated, and the overall brightness of the backlight module can be improved;

compared with the prior art, the utility model discloses an each side of the face uses through the cooperation of the lens body that sets up, LED support 3, solid fixed ring 4, light-emitting seat 5, can realize the straight following formula backlight unit scheme of ultra-thin OD3-OD5, solves the picture facula granule sense of being shaded in ultra-thin OD scheme and feels heavy, the difficult problem of picture inhomogeneous distribution; the POB packaging enables the light source of the light-emitting lamp to be smaller, and the light rays emitted by the light source can be enabled to be more uniform in backlight picture and higher in brightness under the ultra-low OD by matching with a special design development lens;

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.

Claims

1. A backlight module device for realizing ultra-low OD by matching an LED with a lens is characterized by comprising a lens body, an LED bracket (3), a fixing ring (4), a light-emitting seat (5), a first lens column base (6) and a second lens column base (7), the lens body comprises a lens concave surface (1) and a lens convex surface (2), the lens convex surface (2) is fixedly arranged at the position, close to the middle, of the upper end of the lens concave surface (1), a fixing ring (4) is fixedly arranged at the position close to the middle inside the concave surface (1) of the lens, the first lens column foot (6) and the second lens column foot (7) are fixedly arranged at the lower end of the lens concave surface (1) close to the four vertex angles, the light-emitting seat (5) is fixedly arranged at the position of the lower end of the concave surface (1) of the lens close to the middle, the lower end of the light-emitting seat (5) is fixedly provided with an LED bracket (3);

the light-emitting base (5) comprises a PPA support (501), a light-emitting cup support (502), a light-emitting cup opening (503) and a light-emitting lamp, the light-emitting cup support (502) is fixedly installed on the inner surface of the PPA support (501), and the light-emitting lamp and the light-emitting cup opening (503) are both arranged inside the light-emitting cup support (502).

2. The backlight module device with ultra-low OD achieved by LED combined with lens as claimed in claim 1, wherein the light emitting lamps and the light emitting bases (5) are packaged by POB, and the convex lens surface (2) is fixedly connected with the concave lens surface (1) by the fixing ring (4).

3. The backlight module device with ultra-low OD achieved by matching LEDs with lenses as claimed in claim 1, wherein the number of the first lens column bases (6) and the second lens column bases (7) is two, and the first lens column bases (6) and the second lens column bases (7) are symmetrically arranged and distributed at the lower end of the concave surface (1) of the lens.

4. The backlight module device with ultra-low OD achieved by LED combined with lens as claimed in claim 1, wherein the convex surface (2) of the lens is semi-elliptical and the opening (503) of the light-emitting cup is rectangular.

5. The backlight module device with ultra-low OD achieved by matching of LED and lens as claimed in claim 1, wherein the upper end of the concave surface (1) of the lens is provided with a light hole near the middle.