CN217587817U

CN217587817U - Backlight module structure capable of reducing diffusion plate and LED display device

Info

Publication number: CN217587817U
Application number: CN202221299871.4U
Authority: CN
Inventors: 郝茂盛; 张楠; 陈朋; 袁根如; 马艳红
Original assignee: CHIP FOUNDATION TECHNOLOGY Ltd
Current assignee: CHIP FOUNDATION TECHNOLOGY Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-10-14
Anticipated expiration: 2032-05-27

Abstract

The utility model provides a backlight unit structure and LED display device of reducible diffuser plate, wherein, the structure includes: the light emitting structure is arranged on the glass substrate to uniformly emit light; an LED chip bonded on the first surface of the glass substrate; the reflector is bonded on the electrode surface of the LED chip; the light guide plate is directly adhered to the second surface of the glass substrate, and the second surface is a surface deviated from the first surface; the utility model discloses a directly bond the speculum on the LED chip to directly bond the LED chip on the glass substrate that has the light-emitting structure, reached the effect of even light-emitting, reduced the use of diffuser plate, and then reduced LED display device's thickness.

Description

Backlight module structure capable of reducing diffusion plate and LED display device

Technical Field

The utility model relates to a semiconductor lighting field especially relates to a backlight unit structure and LED display device of reducible diffuser plate.

Background

Currently, backlight display light sources are mainly divided into direct type backlight sources and side type backlight sources.

Direct type backlight can make and be shaded and can evenly convey whole screen, and the picture detail is more exquisite lifelike, but traditional direct type backlight adopts that the light source subassembly is generally thicker, and the cost is higher. The lateral-entering LED backlight source has two advantages, one is that fewer LED crystal grains can be used, the cost is saved, and the other is that a lighter and thinner machine body can be manufactured, so that an LED module is not required to be arranged behind the liquid crystal panel of the LED backlight television and is placed on the lateral side, and the overall thickness of the screen can be reduced.

However, the direct-type screen is too thick to be light and thin, and although the lateral-type LED backlight tv has a relatively small thickness, the LED dies used are relatively small in number, and light is transmitted to the screen through the light guide plate, which causes the peripheral brightness of the LED tv to be brighter than the center of the screen, the peripheral area of the screen to be hotter than the middle of the screen, and the brightness difference between the peripheral edge and the center of the lateral-type screen.

SUMMERY OF THE UTILITY MODEL

The utility model provides a backlight unit structure and LED display device of reducible diffuser plate has solved the unable frivolousization of straight following formula screen thickness partially and has gone into formula screen brightness edge and central authorities' luminance difference problem laterally, simultaneously, can realize reducing the mode of the diffusion piece among the backlight unit, can reach high luminance homogeneity and frivolous backlight structure more.

According to the utility model discloses an aspect provides a backlight unit structure of reducible optical distance, include:

the light emitting structure is arranged on the glass substrate to uniformly emit light;

an LED chip bonded on the first surface of the glass substrate;

the reflector is bonded on the electrode surface of the LED chip;

and the light guide plate is directly adhered to the second surface of the glass substrate, and the second surface is a surface deviating from the first surface.

Optionally, the backlight module structure capable of reducing the optical distance further comprises: quantum dot films and prisms; wherein, the quantum dot film is arranged on the light guide plate, and the prism is arranged on the quantum dot film.

Optionally, the LED chip includes an LED chip array, and the LED chip array includes a flip LED chip array or a mini LED chip array or a micro LED chip array.

Optionally, the light emergent structure is an irregular coarsening structure or a regular pattern structure.

Optionally, the regular graphical structure is a regular cylindrical structure or a regular truncated cone structure.

According to a second aspect of the present invention, there is provided a LED display device comprising a backlight module structure of the reducible diffuser plate of the first aspect and the alternatives thereof.

The utility model provides a backlight module structure capable of reducing the diffusion plate, which achieves the purpose of reducing the thickness of the whole backlight module structure by bonding all structures in the backlight module, and further reduces the thickness of the LED display device; in addition, by using the glass substrate with the light emergent structure, high brightness uniformity can be achieved, the use of a diffusion plate is reduced, and the thickness of a product is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a backlight module capable of reducing a diffusion plate according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a glass substrate with a light exit structure according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a glass substrate with a light exit structure according to another embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a glass substrate with a light exit structure according to another embodiment of the present invention.

Description of the reference numerals:

1-a glass substrate;

11-a first surface;

12-a second surface;

13-irregular coarsening structure;

14-regular cylindrical structure;

15-regular truncated cone shaped structure;

2-LED chip;

3-a reflector;

4-a light guide plate;

5-quantum dot film;

6-prism.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with reference to specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Referring to fig. 1, the present invention provides a backlight module structure capable of reducing a diffuser plate, including:

the glass substrate 1, be provided with the light-emitting structure on the glass substrate 1 to even light-emitting.

The light emitting structure is an irregular coarsening structure or a regular pattern structure. The regular graphical structure is a regular cylindrical structure or a regular truncated cone structure.

And the LED chip 2 is adhered to the first surface 11 of the glass substrate.

Wherein, the LED chip includes LED chip array, LED chip array includes flip-chip LED chip array or mini LED chip array or micro LED chip array.

And the reflector 3 is adhered to the electrode surface of the LED chip 2. The reflector 3 may be a whole reflector adhered to the second surface 12, or a plurality of continuous reflectors adhered to the second surface 12.

And the light guide plate 4 is directly adhered to the second surface 12 of the glass substrate, and the second surface 12 is a surface opposite to the first surface 11.

The backlight module structure of reducible diffuser plate still includes: a quantum dot film 5 and a prism 6; wherein the quantum dot film 5 is disposed on the light guide plate 4, and the prism 6 is disposed on the quantum dot film 5.

In one embodiment, the process for manufacturing a backlight module with reduced diffusion plates may specifically include the following steps:

firstly, preparing a light-emitting structure on a glass substrate 1, specifically, as shown in fig. 2, the light-emitting structure may be an irregular roughened structure 13; the irregular rough structure may be formed by, for example, chemically etching the surface of the glass substrate to form the irregular rough structure on the surface of the glass substrate. Of course, the light exit structure may also be a regular pattern structure, such as a regular cylindrical structure 14 as shown in fig. 3, and a regular truncated cone structure 15 as shown in fig. 4. The regular cylindrical structures 14 may be formed by dry etching the surface of the glass substrate, and the regular truncated cone-shaped structures 15 may be formed by wet etching the surface of the glass substrate. The periodic light emitting structure of the glass light emitting surface can be obtained through the method, so that uniform light emitting of the glass substrate can be realized.

Then preparing an LED chip 2, wherein the LED chip 2 comprises an LED chip array, and the LED chip array comprises a flip LED chip array or a mini LED chip array or a micro LED chip array; the LED chip 2 comprises a light-emitting surface and an electrode surface;

then, directly bonding the light-emitting surface of the LED chip 2 and the glass substrate 1 together, specifically, by coating an adhesive material on the light-emitting surface of the LED chip 2 and/or the first surface of the glass substrate 1, bonding the two together; or the light-emitting surface of the LED chip 2 and/or the first surface of the glass substrate 1 may be bonded together by laser transfer or temporary bonding;

then, an adhesive material is applied to the electrode surface of the LED chip 2, and is bonded to the reflector 3.

In the scheme, the thickness of the whole backlight module structure is reduced by bonding the structures in the backlight module, so that the thickness of the LED display device is further reduced; in addition, by using the glass substrate with the light emergent structure, high brightness uniformity can be achieved, the use of a diffusion plate is reduced, and the thickness of a product is further reduced. .

The utility model also provides a LED display device, including above the backlight unit structure of reducible diffuser plate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims

1. A backlight module structure capable of reducing diffusion plates is characterized by comprising:

an LED chip bonded on the first surface of the glass substrate;

the reflector is bonded on the electrode surface of the LED chip;

and the light guide plate is directly adhered to the second surface of the glass substrate, and the second surface is a surface deviated from the first surface.

2. The backlight module structure of claim 1, further comprising: quantum dot films and prisms; wherein the quantum dot film is disposed on the light guide plate, and the prism is disposed on the quantum dot film.

3. The backlight module structure of claim 1 or 2, wherein the LED chip comprises an array of LED chips, and the array of LED chips comprises an array of flip LED chips or an array of mini LED chips or an array of micro LED chips.

4. The backlight module structure capable of reducing diffusion plate as claimed in claim 1, wherein the light emergent structure is an irregular roughened structure or a regular pattern structure.

5. The backlight module structure of claim 4, wherein the regular pattern structure is a regular cylindrical structure or a regular truncated cone structure.

6. An LED display device, comprising the backlight module structure capable of reducing diffusion plate as claimed in any one of claims 1 to 5.