CN210005832U

CN210005832U - Direct type backlight module and display equipment

Info

Publication number: CN210005832U
Application number: CN201921134136.6U
Authority: CN
Inventors: 王智勇; 文昭君
Original assignee: Hefei Huike Jinyang Technology Co Ltd
Current assignee: Hefei Huike Jinyang Technology Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-01-31
Anticipated expiration: 2029-07-18

Abstract

The utility model provides a kind of straight following formula backlight unit, including the base plate, a plurality of lamp bodies, each lamp body pastes respectively and locates on the base plate and is connected with the base plate electricity respectively, reflection configuration locates on the base plate, wherein, reflection configuration has a plurality of reflection chambeies, each reflection chamber corresponds the setting with each lamp body , reflection configuration has mounting hole and light-emitting mouth, mounting hole and light-emitting mouth communicate with each other with the reflection chamber respectively, reflection configuration's inside wall is equipped with the plane of reflection, the lamp body passes the mounting hole after and places in the reflection chamber, the plane of reflection sets up to gather together the light reflection that the lamp body sent and launch from the light-emitting mouth, the utility model also provides kind of display equipment, including above-mentioned straight following formula backlight unit, the utility model provides a straight following formula backlight unit, through corresponding every lamp body sets up reflection chambeies, and the plane of reflection can gather together the light reflection that the lamp body sent and launch from the light-emitting mouth from.

Description

Direct type backlight module and display equipment

Technical Field

The utility model belongs to the technical field of show, more specifically say, relate to kinds of straight following formula backlight unit and display device.

Background

The energy-saving and image quality improving technology is a field in which the color television industry continuously pursues innovation, and with the popularization of liquid crystal televisions, the local dimming technology becomes which is the best technology integrating energy saving and image quality improvement at . the liquid crystal television display mainly comprises a backlight module and a liquid crystal display panel, wherein a backlight source in the backlight module mainly adopts a linear light source CCFL and a point light source LED, which provides possibility for realizing the local dimming, and the backlight module of the liquid crystal television is the part with the largest energy consumption of the whole machine, so that the problems of adjusting the backlight brightness to realize energy saving and improving the image quality are continuously overcome in the industry.

With the increase of the requirements for picture quality and the demand for local dimming, 288, 576, 1152, … … areas gradually appear at present, but in the current local dimming, especially in the local dimming of very high-order multiple areas (thousands of areas), the optical cross effect between lamps can weaken the purity of local dimming, when area requires highlighting, and area requires low-luminance, the light of highlighting and low-luminance mutually radiate and influence, and there is mixed light between local dimming areas, which can influence the purity of local dimming and the effect of local dimming.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an kind of straight following formula backlight unit to take place to mix between the light modulation area when solving local dimming, influence the technical problem of the purity and the effect of adjusting luminance.

In order to achieve the above object, the present invention adopts the technical solution that direct type backlight modules are provided, comprising:

a substrate;

the lamp bodies are respectively attached to the substrate and are respectively electrically connected with the substrate;

the reflecting structure is arranged on the substrate;

the reflecting structure is provided with a plurality of reflecting cavities, each reflecting cavity corresponds to each lamp body , the reflecting structure is provided with a mounting hole and a light outlet, the mounting hole and the light outlet are respectively communicated with the reflecting cavities, the inner side wall of the reflecting structure is provided with a reflecting surface, the lamp bodies penetrate through the mounting holes and then are placed in the reflecting cavities, and the reflecting surface is arranged to reflect and gather light rays emitted by the lamp bodies and emit the light rays from the light outlets.

Optionally, the th cross-section of the reflective cavity is square, the th cross-section is parallel to the substrate;

the second section of the reflecting cavity is U-shaped and is vertical to the substrate.

Optionally, the reflective surface comprises:

the reflecting surface includes:

th reflecting bottom surface, the mounting hole is opened on th reflecting bottom surface, the th reflecting bottom surface is plane;

th reflecting side face extending from the th reflecting bottom face periphery to the direction far away from the th reflecting bottom face to form the light outlet;

the th reflecting side surface is arc-shaped, and the center of the th reflecting side surface is located in the reflecting cavity.

Optionally, the reflective surface comprises:

the mounting hole is formed in the second reflection bottom surface, and the second reflection bottom surface is a plane;

the second reflection side face extends from the periphery of the second reflection bottom face to the direction far away from the second reflection bottom face to form the light outlet;

the longitudinal section of the second reflecting side surface is parabolic, and the focus of the second reflecting side surface is positioned in the reflecting cavity.

Optionally, the reflective surface comprises:

the mounting hole is formed in the third reflection bottom surface, and the third reflection bottom surface is a plane;

the third reflection side face extends from the periphery of the third reflection bottom face to the direction far away from the third reflection bottom face to form the light outlet;

wherein the third reflective side surface is a plane.

Optionally, the reflection structure includes a plurality of reflection units, each of the reflection units is distributed in an array, and two adjacent reflection units are connected by a connection board.

The utility model provides a straight following formula backlight unit's beneficial effect lies in that the utility model discloses a straight following formula backlight unit is through setting up a plurality of reflection chambeies on reflection configuration, and all locate each reflection chambeies with each lamp body, and every lamp bodies correspond the setting with every reflection chambeies , and like this, can structurally keep apart each lamp body each other, and simultaneously, the light reflection that sends each lamp body through the plane of reflection gathers together and launches from the light-emitting window, make the light that every lamp body sent all launch in the region that its reflection chambeies correspond, thereby make the light between the two adjacent lamp bodies noninterfere, each other not mixed light, each other does not influence, realize the local dimming of high-purity high accuracy.

The utility model also provides kinds of display equipment, including above-mentioned straight following formula backlight unit.

The utility model provides a display device's beneficial effect lies in: the utility model discloses a display device is through above-mentioned straight following formula backlight unit's setting to make it show the image quality height.

Drawings

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

Fig. 1 is a schematic view illustrating an cross-sectional structure of a direct-type backlight module according to an embodiment of the present invention;

fig. 2 is another cross-sectional structural schematic view of a direct type backlight module according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a schematic structural diagram of the reflective structure of FIG. 1;

fig. 5 is a schematic structural view of a direct type backlight module according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a substrate; 2-a lamp body; 3-a reflective structure; 21-lamp wick; 22-a lampshade; 30-a reflection unit; 31-a connecting plate; 300-a reflective cavity; 301-mounting holes; 302-light outlet; 3000-reflecting surface; 3001-reflective bottom surface; 3002-reflective side.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention to be solved clearer, the present invention is described in detail below with reference to the accompanying drawings and embodiments in steps.

It is noted that when an element is referred to as being "secured to" or "disposed on" another elements, it can be directly on the other elements or indirectly on the other elements when elements are referred to as being "connected to" the other elements, it can be directly connected to the other elements or indirectly connected to the other elements.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Thus, a feature defined as "", "second" may explicitly or implicitly include or more of that feature.

Referring to fig. 1 and fig. 2, a direct type backlight module according to the present invention will now be described.

The direct type backlight module comprises a substrate 1, a plurality of lamp bodies 2 and a reflecting structure 3, wherein the reflecting structure 3 and each lamp body 2 are arranged on the substrate 1.

The substrate 1 is a PCB (Printed Circuit Board), but it is understood that the substrate 1 may also be an aluminum substrate 1 for better heat dissipation effect, and is not limited to only, depending on the requirement.

In the present embodiment, please refer to fig. 3, the lamp body 2 is a lamp bead, which includes a lamp wick 21 and a lampshade 22, the lamp wick 21 is attached to the substrate 1 and electrically connected to the substrate 1, the lampshade 22 is covered on the lamp wick 21, it can be understood that, in other embodiments of the present invention, the lamp body 2 can also be directly an LED chip, the LED chip is attached to the substrate 1 and electrically connected to the substrate 1, without covering the lampshade on the LED chip, but directly installing an optical diaphragm on the back plate or the light guide plate, and performing optical processing on the light emitted from the LED chip through the optical diaphragm, where the limitation is not limited to .

Referring to fig. 1 and 3, the reflective structure 3 is disposed on the substrate 1, the reflective structure 3 has a plurality of reflective cavities 300, each reflective cavity 300 is disposed corresponding to each lamp body 2 , that is, reflective cavities 300 are disposed corresponding to each lamp body 2, referring to fig. 4, the reflective structure 3 has a mounting hole 301 and a light outlet 302, the mounting hole 301 and the light outlet 302 are respectively communicated with the reflective cavities 300, a reflective surface 3000 is disposed on an inner sidewall of the reflective structure 3, the lamp body 2 passes through the mounting hole 301 and is disposed in the reflective cavity 300, and the reflective surface 3000 is configured to converge light emitted from the lamp body 2 and emit the light from the light outlet 302.

Specifically, in the present embodiment, the mounting opening and the light outlet 302 are respectively disposed at two opposite sides of the reflective cavity 300, i.e. the upper and lower sides in fig. 1, so that the light emitted from the lamp body 2 will be emitted from the top light outlet 302.

The utility model provides a straight following formula backlight unit is through setting up a plurality of reflection chambeies 300 on reflection configuration 3, and all locate each reflection chambeies 300 with each lamp body 2, and every lamp body 2 corresponds the setting with every reflection chambeies 300 , thus, can structurally keep apart each lamp body 2 each other, and simultaneously, the light reflection that sends each lamp body 2 through the plane of reflection gathers together and launches from light-emitting window 302, make the light that every lamp body 2 sent all launch at the region that its reflection chambeies 300 corresponds, thereby make the light between two adjacent lamp bodies 2 mutual noninterference, each other not mixed light, each other not influence, realize the local dimming of high purity high accuracy.

Optionally, referring to fig. 1 and 5, in the present embodiment, the th cross section of the reflective cavity 300 is square, and the th cross section is parallel to the substrate 1, that is, the transverse cross section in fig. 1, specifically, referring to fig. 5, which is a top view of the direct type back surface module, as can be seen from the figure, the lamp body 2 is square, and the top view of each reflective cavity 300 is also square, so that the transverse cross section of the reflective cavity 300 is square, such a layout can enable the lamp body 2 to be located at the center of the bottom of the reflective cavity 300, and the light reflected by the reflective cavity 300 will be concentrated and gathered in the central area of the reflective cavity 300, which is more beneficial to preventing the light mixing phenomenon after each lamp body 2.

Referring to fig. 5, a second cross section of the reflective cavity 300 is U-shaped, and the second cross section is perpendicular to the substrate 1, i.e. the longitudinal cross section in fig. 5. This embodiment is the U type through the second cross-section setting with reflection chamber 300 to can make the light that lamp body 2 sent can not scurried out with the light mixed light of other lamp bodies 2, and all be top light-emitting port 302 and send, and then improved light adjustment accuracy and purity.

Specifically, in this embodiment, referring to fig. 3, the reflective surface 3000 includes an th reflective bottom surface 3001 and a th reflective side surface 3002, the 0 th reflective bottom surface 3001 is a plane, the mounting hole 301 is opened at the th reflective bottom surface 3001, and the mounting hole 301 is opened at the center of the th reflective bottom surface 3001, the th reflective side surface 3002 extends from the periphery of the th reflective bottom surface 3001 toward a direction away from the th reflective bottom surface 3001 to form a light outlet 302, the th reflective side surface 3002 is an arc, and the center of the th reflective side surface 3002 is located in the reflective cavity 300, so that the light reflected by the th reflective side surface 3002 is gathered to the reflective cavity 300 and emitted from the light outlet.

It can be understood that, in other embodiments of the present invention, the reflective surface 3000 includes a second reflective bottom surface and a second reflective side surface, the second reflective bottom surface is a plane, the mounting hole 301 is installed on the second reflective bottom surface, the second reflective side surface extends from the periphery of the second reflective bottom surface towards the direction away from the second reflective bottom surface to form a light outlet, the longitudinal section of the second reflective side surface is parabolic, the focus of the second reflective side surface is located in the reflective cavity 300, and it can gather the light emitted from the lamp body 2 to the reflective cavity 300.

In addition, in the embodiments of the present invention, the reflective surface 3000 includes a third reflective bottom surface and a third reflective side surface, the third reflective bottom surface is a plane, the third reflective side surface is also a plane, the third reflective bottom surface and the third reflective side surface are connected by an arc transition, as long as the light can be reflected and gathered in the reflective cavity 300 and emitted from the light outlet 302, which is not limited to .

Optionally, in this embodiment, referring to fig. 4, the reflection structure 3 includes a plurality of reflection units 30, each reflection unit 30 is distributed in an array, and two adjacent reflection units 30 are connected by a connection board 31. The outer side wall and the inner side wall of each reflection unit 30 are arranged in parallel, that is, each reflection unit 30 is U-shaped, the inner side wall of the reflection unit 30 encloses to form the reflection cavity 300, and the inner side wall of the reflection unit 30 is the reflection surface. This embodiment is through being a plurality of interconnect's reflection unit 30 with reflection configuration 3 setting and constitute, and reflection unit 30 is the U type to make this reflection configuration 3 simple structure, the material cost is low.

Optionally, in this embodiment, each of the connection plates 31 is connected to the light outlet 302 of each of the reflection units 30, the thickness of the connection plate 31 is the same as that of the reflection unit 30, the connection plate 31 is horizontally disposed, and two ends of the connection plate 31 are respectively connected to the top ends of two adjacent reflection units 30.

It can be understood that, in other embodiments of the present invention, the above-mentioned reflection structure 3 can also be block structure, the block structure has a plurality of reflection cavities 300, and the side opposite to the reflection cavities 300 on the block structure and the substrate 1 are parallel to each other and attached to each other, so that the contact surface between the reflection structure 3 and the substrate 1 is large, and the installation is firmer.

Alternatively, referring to fig. 5, in the present embodiment, the lamp bodies 2 are distributed in an array, the reflective cavities 300 are distributed in an array, and the mounting holes 301 are distributed in an array, so as to form an matrix backlight module.

Optionally, in this embodiment, the reflective structure 3 is configured as a reflective sheet, and the reflective surface 3000 is configured as an inner sidewall surface of the reflective sheet. In a specific application, the direct type backlight module further comprises a back plate, and the substrate 1 is fixed on the back plate.

The utility model discloses an in other some embodiments, above-mentioned reflection configuration 3 also can set up to the backplate, and the backplate becomes the reflection configuration 3 of a plurality of U types through five metals punching press above-mentioned plane of reflection 3000 sets up to scribble the printing ink reflection stratum on locating the backplate inside wall, and in this embodiment, this printing ink reflection stratum is white printing ink layer, reaches the purpose of light reflection through white printing ink layer.

The utility model also provides kinds of display equipment, including above-mentioned straight following formula backlight unit, the display equipment of this embodiment is through above-mentioned straight following formula backlight unit to reach the effect of higher image quality.

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

Claims

1. Straight following formula backlight unit, its characterized in that includes:

a substrate;

the reflecting structure is arranged on the substrate;

2. The direct type backlight module of claim 1, wherein the th cross section of the reflective cavity is square, the th cross section is parallel to the substrate;

3. The direct type backlight module according to claim 2, wherein the reflecting surface comprises:

4. The direct type backlight module according to claim 2, wherein the reflecting surface comprises:

5. The direct type backlight module according to claim 2, wherein the reflecting surface comprises:

wherein the third reflective side surface is a plane.

6. The direct-type backlight module as claimed in claim 1, wherein the reflective structure comprises a plurality of reflective units, each of the reflective units is arranged in an array, and two adjacent reflective units are connected by a connecting plate.

7. A display device comprising the direct type backlight module of any of claims 1 to 6.