阅读说明：本技术 一种适用于高色域的量子点导光板及背光模组 (Quantum dot light guide plate and backlight unit suitable for high colour gamut ) 是由 许鹏举 于 2021-01-26 设计创作，主要内容包括：本发明公开了一种适用于高色域的量子点导光板及背光模组,该量子点导光板设置了密封性导光网点,可以起到密封量子点阻水氧化的作用,能够保护量子点的结构不会被破坏,从而使整个量子点导光板的使用寿命大大提高,同时,该量子点导光板与常规的量子膜片相比,成本更低；该背光模组使用上述量子点导光板,可以提升整个背光模组的亮度,同时能够降低制作成本,通过LED灯条发出蓝光,与量子点导光板搭配进行光的藕合,再通过光学膜片发出高色域的白光,能够提升电视及显示器的色域,达到显示画面的高饱和度、高清晰度的品质,实用性强。(The invention discloses a quantum dot light guide plate and a backlight module suitable for high color gamut.A sealing light guide mesh point is arranged on the quantum dot light guide plate, which can play a role of sealing quantum dots to block water and oxidize and can protect the structure of the quantum dots from being damaged, thereby greatly prolonging the service life of the whole quantum dot light guide plate; this backlight unit uses above-mentioned quantum dot light guide plate, can promote whole backlight unit's luminance, can reduce the cost of manufacture simultaneously, sends the blue light through LED lamp strip, carries out the coupling of light with the collocation of quantum dot light guide plate, and rethread optics diaphragm sends the white light of high colour gamut, can promote the colour gamut of TV and display, reaches the high saturation of display frame, high definition's quality, and the practicality is strong.)

1. A quantum dot light guide plate suitable for high color gamut, comprising: the light guide plate comprises a PMMA plate (11), quantum dot light guide dots (12) and sealing light guide dots (13), wherein the quantum dot light guide dots (12) are uniformly arranged on the PMMA plate (11), and the sealing light guide dots (13) are printed on the surfaces of the quantum dot light guide dots (12) and the PMMA plate (11).

2. The quantum dot light guide plate suitable for high color gamut according to claim 1, wherein the PMMA plate (11) is made of polymethyl methacrylate, methyl methacrylate-styrene copolymer or polycarbonate.

3. The quantum dot light guide plate suitable for high color gamut as claimed in claim 1, wherein the quantum dot light guide dots (12) are cured by quantum dot ink.

4. The quantum dot light guide plate suitable for high color gamut as claimed in claim 1, wherein the sealable light guide dots (13) are made of optical ink.

5. A backlight module suitable for high color gamut, comprising a reflector plate (2), an LED light bar (3), an optical film (4), a middle frame (5) and the quantum dot light guide plate (1) as claimed in any one of claims 1 to 4; the reflector plate (2), the LED lamp strip (3), the quantum dot light guide plate (1), the optical diaphragm (4) and the middle frame (5) are assembled and molded in sequence;

the LED light bar (3) is used for providing a blue point light source, and blue light emitted by the LED light bar (3) is emitted from the side surface of the quantum dot light guide plate (1) and is optically coupled to emit white light; the reflector plate (2) is used for reflecting white light to the front side to form a surface light source, and the white light emits pure white light after passing through the optical film (4).

6. The backlight module suitable for high color gamut according to claim 5, wherein the LED light bar (3) is composed of a plurality of blue light chip beads.

Technical Field

The present disclosure relates to backlight modules, and particularly to a quantum dot light guide plate and a backlight module with the same.

Background

At present, along with the continuous popularization of quantum dot TV, the backlight unit demand volume as important component also increases greatly in the quantum dot TV, current backlight unit generally adopts the quantum dot diaphragm to promote the colour gamut, its cost is more than 3 times of ordinary diaphragm, and two former quantum diaphragms in the module need to add for separation water oxygen and establish the barrier film, but the optical brightness of barrier film meeting greatly reduced module, so conventional backlight unit is not only with higher costs, and the colour gamut of installation back TV is not high, the definition of TV picture is difficult to reach higher user demand.

Therefore, a problem to be solved by those skilled in the art is how to provide a backlight module with high color gamut and low cost.

Disclosure of Invention

In view of this, the invention provides a quantum dot light guide plate and a backlight module suitable for high color gamut, which solve the problems of high cost, low color gamut of a television after installation and poor definition of television pictures of the existing backlight module.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the present invention provides a quantum dot light guide plate suitable for a high color gamut, comprising: the light guide plate comprises a PMMA plate, quantum dot light guide dots and sealing light guide dots, wherein the quantum dot light guide dots are uniformly arranged on the PMMA plate, and the sealing light guide dots are printed on the surfaces of the quantum dot light guide dots and the PMMA plate.

Further, the PMMA plate is made of polymethylmethacrylate, methylmethacrylate-styrene copolymer, or polycarbonate. The PMMA plate is made of transparent materials and has the performances of high transmittance and light weight.

Furthermore, the quantum dot light guide dots are formed by curing quantum dot printing ink.

Further, the sealing light guide dots are made of special optical ink with a sealing function. By protecting the quantum dot structure, the problem of short service life of the quantum dot television is effectively solved.

On the other hand, the invention also provides a backlight module suitable for high color gamut, which comprises a reflector plate, an LED lamp strip, an optical diaphragm, a middle frame and the quantum dot light guide plate; the reflector plate, the LED lamp strip, the quantum dot light guide plate, the optical diaphragm and the middle frame are assembled and molded in sequence;

the LED light bar is used for providing a blue point light source, and blue light emitted by the LED light bar is emitted from the side surface of the quantum dot light guide plate and is optically coupled to emit white light; the reflector plate is used for reflecting white light to the front side to form a surface light source, and the white light emits pure white light after passing through the optical film.

Further, the LED lamp strip is composed of a plurality of blue light chip lamp beads. Mainly for providing blue point light sources.

According to the technical scheme, compared with the prior art, the invention discloses the quantum dot light guide plate and the backlight module suitable for the high color gamut, the quantum dot light guide plate is provided with the sealing light guide mesh points, the effect of sealing quantum dots to block water and oxidize can be achieved, the structure of the quantum dots can be protected from being damaged, the service life of the whole quantum dot light guide plate is greatly prolonged, and meanwhile, compared with a conventional quantum membrane, the quantum dot light guide plate is lower in cost.

This backlight unit uses above-mentioned quantum dot light guide plate, can promote whole backlight unit's luminance, can reduce the cost of manufacture simultaneously, send the blue light through LED lamp strip, carry out the coupling of light with the collocation of quantum dot light guide plate, pure white light is sent out to rethread optics diaphragm, shows the color that needs through liquid crystal glazing at last, can promote the colour gamut of TV and display, reach the high saturation of display frame, high definition's quality, the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a quantum dot light guide plate suitable for high color gamut according to the present invention;

FIG. 2 is a schematic structural diagram of a quantum dot light guide plate according to another view angle in the embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a backlight module suitable for high color gamut according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In one aspect, referring to fig. 1 and fig. 2, an embodiment of the present invention discloses a quantum dot light guide plate suitable for a high color gamut, including: the light guide plate comprises a PMMA plate 11, quantum dot light guide dots 12 and sealing light guide dots 13, wherein the quantum dot light guide dots 12 are uniformly arranged on the PMMA plate 11, and the sealing light guide dots 13 are printed on the surfaces of the quantum dot light guide dots 12 and the PMMA plate 11.

Specifically, the PMMA plate 11 is made of polymethyl methacrylate, methyl methacrylate-styrene copolymer, or polycarbonate. The plate is a transparent material and has the performance of high transmittance and light weight.

Specifically, the quantum dot light guide dots 12 are formed by curing quantum dot ink. In the embodiment, the quantum dot light guide dot 12 is prepared by mixing quantum dots and optical ink in a certain proportion, and then is processed on the PMMA plate 11 by adopting an ink transfer printing technology.

Specifically, the sealable light-guiding dots 13 are made of optical ink. In this embodiment, the sealing light guide dot 13 is a special optical ink with a sealing function, and is processed on the quantum dot light guide dot 12 and the PMMA plate 11 by an ink transfer printing machine technology. The sealing light guide dots 13 are specifically processed on the PMMA plate 11 by a secondary ink transfer printing technology.

In the present embodiment, the quantum dot light guide dots 12 are distributed on the PMMA plate 11 in a grid shape, and the sealing light guide dots 13 are printed on the surface of each quantum dot light guide dot 12 and the surface of the PMMA plate 11. During manufacturing, the PMMA board 11 is put into a light guide plate printer, a first layer of quantum dot light guide dots 12 are printed, then the light guide plate is dried through a UV furnace, the light guide plate printed with the first layer of quantum dot light guide dots 12 is put into another light guide plate printer again to be printed with sealing light guide dots 13, then the light guide plate is dried through the UV furnace, and finally the manufacturing process is completed after packaging.

On the other hand, referring to fig. 3, the embodiment of the invention also discloses a backlight module suitable for high color gamut, which comprises a reflector plate 2, an LED light bar 3, an optical film 4, a middle frame 5 and the quantum dot light guide plate 1; the reflector plate 2, the LED lamp strip 3, the quantum dot light guide plate 1, the optical diaphragm 4 and the middle frame 5 are assembled and molded in sequence;

the LED light bar 3 is used for providing a blue point light source, and blue light emitted by the LED light bar 3 is emitted from the side surface of the quantum dot light guide plate 1 and is optically coupled to emit white light; the reflector plate 2 is used for reflecting the white light to the front side to form a surface light source, and the white light emits pure white light with high brightness and high color gamut after passing through the optical film 4.

Specifically, the LED light bar 3 is composed of a plurality of blue light chip lamp beads. Send the blue light through blue light chip LED lamp pearl, carry out the coupling of light with 1 collocation of quantum dot light guide plate, the white light is sent out to rethread optics diaphragm 4, makes the TV color more saturated, and the picture is more lifelike.

Specifically, in the present embodiment, the reflective sheet 2 is assembled at the bottom and made of a white material with high reflectivity, which is used to effectively reflect light to the front, the optical film 4 is assembled on the quantum dot light guide plate 1, and the middle frame 5 is used to fix the materials of the layers in the whole backlight module.

Preferably, optical diaphragm 4 adopts diaphragm group in this embodiment, and the staff will take and place the cubic diaphragm in the past, and this optical diaphragm 4 adopts trinity diaphragm, has further reduced staff's operation step, only needs to take to place just can accomplish once, has improved production efficiency.

When the backlight module of the present embodiment is assembled, the structures of the layers are sequentially assembled together as shown in fig. 3. The quantum dot light guide plate 1 is optically coupled by light entering from the side through the LED light bar 3 to emit pure white light, the pure white light is converted into a surface light source from a point light source, and then the pure white light with high brightness and high color gamut is emitted through the assembly with the optical film 4, so that the television and the display achieve the function of high color gamut.

It is not easy to find that the backlight module disclosed by the embodiment of the invention can save the cost by about 25% -30% compared with the conventional backlight module, because the conventional backlight module needs a large number of sub-diaphragms to play a role in improving the color gamut, and the cost of the quantum diaphragms is about 3 times of that of common materials, the cost of the quantum dot light guide plate adopted by the embodiment is saved by about one third compared with the quantum diaphragms, and the backlight module can realize the high color gamut requirement only by using the common optical diaphragms; meanwhile, the backlight module can effectively improve the color gamut of a television and a display so as to achieve the quality of high saturation and high definition of a display picture, and has strong practicability.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.