CN212905825U

CN212905825U - Improved quantum dot backlight module

Info

Publication number: CN212905825U
Application number: CN202021922277.7U
Authority: CN
Inventors: 张春; 陈建; 焦江华; 田晓星; 丁清辉
Original assignee: SHENZHEN BAOMING TECHNOLOGY Ltd
Current assignee: SHENZHEN BAOMING TECHNOLOGY Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-04-06
Anticipated expiration: 2030-09-07

Abstract

The utility model relates to a modified quantum dot backlight unit, including light guide plate, quantum dot membrane, membrane of adding lustre to and light source, one side of light guide plate is located to the light source, membrane of adding lustre to, quantum dot membrane and the range upon range of setting of light guide plate top-down, the quantum dot membrane stretches out towards the one end of light source the edge of membrane of adding lustre to forms protruding edge, the upper surface on protruding edge is equipped with the shading sticky tape, the one end of shading sticky tape extends to the top of light source. The utility model discloses can effectively shelter from the blue light that spills from quantum dot membrane inefficacy limit, reduce the blue light phenomenon of leaking of light source side, improve display effect.

Description

Improved quantum dot backlight module

Technical Field

The utility model relates to a backlight technical field particularly, relates to a modified quantum dot backlight unit.

Background

Quantum dots (quantum dots) are nano-scale semiconductors that emit light of a specific frequency by applying a certain electric field or light pressure to the nano-semiconductor material, and the frequency of the emitted light varies with the size of the semiconductor, so that the color of the emitted light can be controlled by adjusting the size of the nano-semiconductor, which is called quantum dots because it has a characteristic of confining electrons and Electron holes (Electron holes), which is similar to atoms or molecules in the natural world.

The quantum dot technology enables an LCD (liquid crystal display) to be realized in a wide color field, is an ideal technology for 4K-level picture information, and can greatly improve the color reproducibility, the color saturation, the overall brightness and the like of picture images. However, the quantum dot film has an unavoidable defect, namely, a part of quantum layer on the edge of the cut film material is damaged by water and oxygen, a failure edge of a certain area appears, the blue light of the blue light LED cannot be excited into white light by the failure edge of the part, and the phenomenon of blue light around the film material is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modified quantum dot backlight unit can effectively shelter from the blue light that spills from quantum dot membrane inefficacy limit, reduces the hourglass blue light phenomenon of light source side, improves display effect.

The utility model provides a modified quantum dot backlight unit, includes light guide plate, quantum dot membrane, membrane and light source that adds lustre to, one side of light guide plate is located to the light source, membrane, quantum dot membrane and the range upon range of setting of light guide plate top-down add lustre to, the one end of quantum dot membrane orientation light source stretches out the edge of membrane that adds lustre to forms protruding edge, the upper surface on protruding edge is equipped with the shading sticky tape, the one end of shading sticky tape extends to the top of light source.

Furthermore, a black ink layer is arranged on the lower surface of the convex edge.

Further, the convex edge extends out of the edge of the light guide plate and extends to the upper side of the light source.

Furthermore, the thickness of the shading adhesive tape is 0.01 mm-0.2 mm.

Further, still including gluing the frame, it locates to glue the frame the periphery of light guide plate, it is equipped with the boss to glue the position that the frame is close to the light guide plate both sides, the quantum dot membrane stretches out the both sides of light guide plate and extend to on the boss.

Furthermore, the quantum dot film and the boss are bonded through adhesive tape or glue.

Further, the brightness enhancement film comprises an upper brightness enhancement film and a lower brightness enhancement film.

Further, the light source includes flexible circuit board and a plurality of LED lamp, the LED lamp is located one side of light guide plate, flexible circuit board is located the below of LED lamp.

Further, the LED lamp is a blue LED.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the shading sticky tape, and the shading sticky tape extends to the top of light source, can shelter from the blue light of light source directive sight on the one hand, avoids the blue light directly to get into the sight, and on the other hand can shelter from the invalid limit that the quantum dot membrane is close to the light source side, avoids the quantum dot membrane to be close to the phenomenon that the light source side leaks the blue light, improves display effect. Through setting up the boss on gluing the frame, the periphery of quantum dot membrane extends to on the boss for the quantum dot membrane covers the light-emitting area of light guide plate completely, and the edge of quantum dot membrane is located the boss top, makes the blue light avoid the inefficacy limit of quantum dot membrane, thereby improves the phenomenon of leaking the blue light.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the improved quantum dot backlight module of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the improved quantum dot backlight module of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the improved quantum dot backlight module of the present invention.

Fig. 4 is a schematic diagram of two side structures of the quantum dot backlight module of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, in the first embodiment, the improved quantum dot backlight module of the present invention mainly includes a light guide plate 1, a quantum dot film 2, a brightness enhancement film 3, and a light source 4. The light guide plate 1 is provided with a light incident surface and a light emergent surface, the light incident surface is positioned on one side of the light guide plate 1, the light emergent surface is positioned above the light guide plate 1, the light source 4 is arranged on one side close to the light incident surface, and the brightness enhancement film 3, the quantum dot film 2 and the light guide plate 1 are stacked from top to bottom.

The edge that membrane 3 was stretched out to light enhancement membrane is stretched out to quantum dot membrane 2 one end towards light source 4 forms protruding edge 5, and the upper surface of protruding edge 5 is equipped with shading sticky tape 6, and the one end of shading sticky tape 6 extends to the top of light source 4, can shelter from the blue light of 4 directive sight areas of light source on the one hand, avoids the blue light directly to get into the sight area, and on the other hand can shelter from the invalid limit that quantum dot membrane 2 is close to light source side 4, avoids quantum dot membrane 2 to be close to the phenomenon of 4 side leakage blue lights of light source, improves display.

Shading sticky tape 6 is preferred black sticky tape, and its thickness is preferred 0.01mm ~0.2mm, and when this thickness can guarantee shading sticky tape 6's shading effect, avoid increasing the thickness of structure in a poor light to satisfy the demand of electronic product slimming.

It should be noted that the length of the portion of the light-shielding tape 6 extending above the light source 4 can be adjusted according to actual needs, that is, the light-shielding tape 6 can completely or partially shield the light source 4, and the embodiment is not limited herein.

As shown in fig. 2, the present embodiment differs from the first embodiment in that the protruding edge 5 extends out of the edge of the light guide plate 1 and extends to the top of the light source 4, so that the invalid edge of the quantum dot film 2 is located above the light source 4, and the invalid edge is kept away from the light emitting surface of the light guide plate 1, thereby avoiding the blue light leakage phenomenon that the quantum dot film 2 is close to the light source side.

As shown in fig. 3, the third embodiment of the present invention, this embodiment and the second embodiment are different in that the lower surface of the convex edge 5 is provided with a black ink layer 14, and the black ink layer 14 can be formed on the lower surface of the convex edge 5 by silk-screen printing or spraying, so as to further improve the shading effect. It should be understood that in the first embodiment, i.e. the ledge 5 is located inside the edge of the light guide plate 1, the black ink layer 14 can be also disposed under the ledge 5 to improve the light shielding effect.

It should be noted that, in the above embodiment, the light guide plate further includes the glue frame 7, the glue frame 7 is disposed on the periphery of the light guide plate 1, the positions of the glue frame 7 close to the two sides of the light guide plate 1 are provided with the bosses 8, the quantum dot films 2 extend out of the two sides of the light guide plate 1 and extend onto the bosses 8, the lower surfaces of the quantum dot films 2 are adhered to the bosses 8 through the adhesive tapes or the glue, so that the quantum dot films 2 completely cover the light emitting areas of the light guide plate 1, the edges of the quantum dot films 2 are located above the bosses 8, the blue light is enabled to avoid the failure edges of the quantum dot films 2.

In the above embodiment, the brightness enhancement film 3 includes the upper brightness enhancement film 9 and the lower brightness enhancement film 10, but is not limited thereto, and in other embodiments, the brightness enhancement film 3 may be a single sheet or a plurality of sheets.

In the above embodiment, the light source 4 includes the flexible circuit board 11 and the LED lamps 12. LED lamp 12 adopts blue light LED, and one side of light guide plate 1 is located to LED lamp 12, and flexible circuit board 11 is located the below of LED lamp 12, and flexible circuit board 11 passes through double-sided tape and bonds with the lower terminal surface of light guide plate 1. An iron shell 13 for supporting and fixing is arranged on the outer side of the backlight module, and the flexible circuit board 11 is bonded with the iron shell 5 through a double-sided adhesive tape.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The utility model provides a modified quantum dot backlight unit, includes light guide plate, quantum dot membrane, membrane and light source that adds lustre to, one side of light guide plate is located to the light source, membrane, quantum dot membrane and the range upon range of setting of light guide plate top-down add lustre to, its characterized in that, the one end of quantum dot membrane orientation light source is stretched out the edge of membrane that adds lustre to forms protruding edge, the upper surface on protruding edge is equipped with the shading sticky tape, the one end of shading sticky tape extends to the top of light source.

2. The improved quantum dot backlight module of claim 1, wherein the lower surface of the ledge is provided with a black ink layer.

3. The improved quantum dot backlight module of claim 1, wherein the convex edge extends beyond the edge of the light guide plate and above the light source.

4. The improved quantum dot backlight module as claimed in claim 1, wherein the thickness of the light-shielding tape is 0.01 mm-0.2 mm.

5. The improved quantum dot backlight module as claimed in claim 1, further comprising a plastic frame, wherein the plastic frame is disposed at the periphery of the light guide plate, bosses are disposed at positions of the plastic frame near two sides of the light guide plate, and the quantum dot film extends out of two sides of the light guide plate and onto the bosses.

6. The improved quantum dot backlight module of claim 4, wherein the quantum dot film and the boss are bonded by adhesive tape or glue.

7. The improved quantum dot backlight module of claim 1, wherein the brightness enhancement film comprises an upper brightness enhancement film and a lower brightness enhancement film.

8. The improved quantum dot backlight module as claimed in claim 1, wherein the light source comprises a flexible circuit board and a plurality of LED lamps, the LED lamps are disposed on one side of the light guide plate, and the flexible circuit board is disposed under the LED lamps.

9. The improved quantum dot backlight module of claim 8, wherein the LED lamp is a blue LED.