CN201964266U - Backlight module and liquid crystal display screen - Google Patents

Abstract

The embodiment of the utility model discloses a backlight module and a liquid crystal display, which relate to the technical field of liquid crystal display. The invention solves the technical problem that the existing backlight module has a large number of light-emitting devices, resulting in relatively high cost. The backlight module provided by the utility model includes a backplane, a plurality of light-emitting devices distributed in the light-emitting area of the backboard, and an optical film, and the light emitted by the light-emitting devices in the light-emitting area passes through through the optical film; the light-emitting area includes at least a first area and a second area, and the distance between adjacent light-emitting devices distributed in the first area is the same as that distributed in the second area The distances between adjacent light-emitting devices are different. The liquid crystal display includes the backlight module and the liquid crystal panel provided by the above embodiments of the present invention. The utility model is mainly used in reducing the cost of the backlight module.

Description

Backlight module and LCD display

technical field

The utility model relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display provided with the backlight module.

Background technique

In recent years, with the continuous development of liquid crystal display, it is more widely used in various fields such as personal digital assistant PDA (Personal Digital Assistant), computer monitor, LCD TV and outdoor advertising screen, especially thin film transistor liquid crystal display TFT LCD (Thin film Transistor Liquid Crystal Display) has dominated the flat panel display market due to its advantages of low power consumption and low radiation.

The backlight module is an important part of the liquid crystal display, and the backlight module can provide backlight for the display area of the liquid crystal panel in the liquid crystal display. Existing backlight modules include direct-lit and side-lit types, both of which include a backplane, a plurality of light-emitting devices and optical films (or called: Optical diaphragm group), wherein: the light-emitting device is LED (Light Emitting Diode, light-emitting diode), the light emitted by the light-emitting device in the light-emitting area passes through the optical diaphragm, and the light passing through the optical diaphragm will eventually enter the liquid crystal panel. Display area, and multiple light-emitting devices in the light-emitting area are evenly distributed, that is, among multiple light-emitting devices, the distance between adjacent light-emitting devices is the same, and the optical film is made of multiple transparent films. Including diffusion plate, diffusion sheet, brightness enhancement sheet, etc., the optical film is used to convert the light emitted by multiple light emitting devices into uniform light, thereby converting the point light source formed by the light emitting device into a surface light source.

The inventor finds in the process of realizing the utility model that there are at least the following problems in the prior art:

In the prior art, the central part and the edge part of the display area of the liquid crystal panel require different values for the brightness and uniformity of the backlight, so some parts of the display area of the liquid crystal panel have the same requirement for the luminous efficiency of the light emitting device. Differently, generally, the central part of the display area of the liquid crystal panel has higher requirements on the brightness of the backlight, and the edge part of the display area of the liquid crystal panel has lower requirements on the brightness of the backlight. However, in the prior art, the backlight is provided for the display area of the liquid crystal panel The LEDs in the light-emitting area of the back panel are evenly distributed, and the number of light-emitting devices that provide backlight for the part that requires high brightness and the part that requires low brightness in the display area of the liquid crystal panel in the light-emitting area of the back plate is consistent. , so the number of light-emitting devices in the backlight module is relatively large, which in turn leads to high product cost.

Utility model content

The utility model provides a backlight module and a liquid crystal display screen provided with the backlight module. The invention solves the technical problem that the existing backlight module has a large number of light-emitting devices, resulting in relatively high cost.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

The backlight module includes a backplane, a plurality of light-emitting devices distributed in the light-emitting area of the backplane, and an optical film, wherein:

The light emitted by the light-emitting device in the light-emitting area passes through the optical film;

The light-emitting area includes at least a first area and a second area, and the distance between adjacent light-emitting devices distributed in the first area is the same as that of adjacent light-emitting devices distributed in the second area. The spacing between devices varies.

The liquid crystal display includes the backlight module and the liquid crystal panel provided by the above-mentioned embodiments of the present invention, wherein:

The light emitted by the light emitting device in the light emitting area passes through the optical film and is irradiated on the liquid crystal display area of the liquid crystal panel.

Compared with the prior art, the above-mentioned technical solution provided by the utility model can at least achieve the following technical effects:

Since in the embodiment of the present invention, the distance between adjacent light-emitting devices distributed in the first region is different from the distance between adjacent light-emitting devices (such as LEDs) distributed in the second region, when the distances are different, each The light emitted by a light-emitting device passes through the optical film and provides different backlights for different parts of the display area on the liquid crystal panel. Therefore, it is possible to provide backlights with different brightness levels for parts of the display area on the liquid crystal panel that require different brightness levels. Purpose, and, compared with the prior art, the spacing of the light-emitting devices in the light-emitting area on the backplane that provides the backlight for the part of the display area of the liquid crystal panel that requires a lower backlight brightness can be designed larger, so that the light-emitting devices The number of light-emitting devices arranged in the area with a larger pitch design will be reduced, and the less the number of light-emitting devices, the lower the cost of the backlight module. Many, resulting in relatively high cost of technical problems.

Description of drawings

FIG. 1 is a schematic plan view of a direct-lit backlight module in the prior art;

2 is a schematic plan view of an edge-lit backlight module in the prior art;

Fig. 3 is a schematic diagram of a direct type backlight module provided by an implementation mode of Example 1 of the present invention;

FIG. 4 is a schematic diagram of a direct-lit backlight module provided by yet another embodiment of Example 1 of the present invention;

Fig. 5 is a schematic diagram of a direct type implementation provided by Example 2 of the present invention;

FIG. 6 is a schematic diagram of an edge-lit backlight module provided by Embodiment 3 of the present invention;

7 is a schematic diagram of the positional relationship of the main components inside the liquid crystal display provided with the direct-lit backlight module provided by the embodiment of the present invention;

FIG. 8 is a schematic diagram showing the positional relationship of the main components inside the liquid crystal display provided with the direct-type backlight module provided by the embodiment of the present invention.

Marks in the figure: 1. Backplane; 2. Light-emitting area; 21. First area; 22. Second area; 23. Third area; 3. Light-emitting device; 4. Optical film; 5. Liquid crystal panel; 50. Display area of liquid crystal panel; 6. Light guide plate; 7. Reflective film.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The embodiment of the utility model provides a backlight module with convenient installation, simple structure, low cost and easy maintenance and a liquid crystal display screen provided with the backlight module.

Example 1:

As shown in Fig. 3, Fig. 4 and Fig. 7, the backlight module provided by the embodiment of the present invention includes a backplane 1, a plurality of light-emitting devices 3 distributed in the light-emitting area 2 on the backplane 1, and an optical film 4 ,in:

The light R emitted by the light emitting device 3 in the light emitting area 2 passes through the optical film 4;

The light emitting region 2 at least includes a first region 21 and a second region 22, the distance P1 between adjacent light emitting devices 3 distributed in the first region 21 and the distance P1 between adjacent light emitting devices 3 distributed in the second region 22 The pitch P2 is different.

Since in the embodiment of the present invention, the pitch P1 between adjacent light emitting devices 3 distributed in the first region 21 is different from the pitch P2 between adjacent light emitting devices 3 (such as LEDs) distributed in the second region 22 , when the spacing is different, the light R emitted by each light-emitting device 3 passes through the optical film 4 and provides different backlights for different parts of the display area 50 on the liquid crystal panel 5, so it is realized that the backlight for the display area 50 on the liquid crystal panel 5 is different. 50 The purpose of providing backlights with different brightness levels for parts with different brightness requirements, and, compared with the prior art, providing the light-emitting area on the backplane 1 of the backlight for the part with lower backlight brightness requirements on the display area 50 of the liquid crystal panel 5 The spacing of the light-emitting devices 3 in 2 can be designed to be larger, so that the number of light-emitting devices 3 arranged in the area where the design of the spacing of the light-emitting devices 3 is larger will decrease, and the fewer the number of light-emitting devices 3, the greater the number of backlight modules. The cost will be lower, so it solves the technical problem that the existing backlight module has a large number of light-emitting devices, resulting in relatively high cost.

Taking the direct type backlight module shown in FIG. 3 , FIG. 4 and FIG. 7 as an example, the backlight module provided by the embodiment of the present invention will be described in more detail below.

In this embodiment, the light R emitted by the light emitting devices 3 distributed in the first region 21 as shown in FIG. The pitch P1 between them is smaller than the pitch P2 between adjacent light emitting devices 3 distributed in the second region 22 .

On the premise of using light emitting devices 3 of the same specification, the smaller the spacing in which region, the greater the density of light emitting devices 3 in which region, the greater the density of light emitting devices 3, the more light R is emitted, and it can provide The brightness of the backlight is also brighter. Because the positions of the optical film 4 and the display area 50 of the liquid crystal panel 5 are relative, the central part of the optical film 4 is facing the central part of the display area 50 of the liquid crystal panel 5, usually, the display area 50 of the liquid crystal panel 5 The central part has higher requirements on the brightness of the backlight, so the pitch P1 between adjacent light emitting devices 3 distributed in the first area 21 is smaller than the pitch P2 between adjacent light emitting devices 3 distributed in the second area 22, which can The light R of higher brightness is supplied to the central portion of the display area 50 of the liquid crystal panel 5 .

In this embodiment, the light-emitting area 2 also includes a third area 23, and the light R emitted by the light-emitting device 3 distributed in the third area 23 penetrates the optical film 4 at the edge of the optical film 4 and is distributed in the second area 22. The light R emitted by the light-emitting devices 3 in the interior penetrates the optical film 4 between the central part of the optical film 4 and its edge part, and the distance P2 between adjacent light-emitting devices 3 distributed in the second area 22 is smaller than the distribution The pitch P3 between adjacent light emitting devices 3 in the third region 23 .

Since the display area 50 of the liquid crystal panel 5 has a decreasing requirement for the brightness value of the backlight from its central part to the edge part, three areas are set in the light-emitting area 2, thereby providing different lighting conditions for the display area 50 of the liquid crystal panel 5. The backlight of the brightness level can further reduce the number of light emitting devices 3 as much as possible on the premise that the brightness and clarity of the image displayed in the display area 50 of the liquid crystal panel 5 conform to the visual law of the human eye.

In this embodiment, the first area 21 is located at the center of the light emitting area 2 , the third area 23 is located at the edge of the light emitting area 2 , and the second area 22 is located between the center of the light emitting area 2 and the edge of the light emitting area 2 .

This design conforms to the shape of the light-emitting area 2 on the backplane 1 in the direct-lit backlight module, and can provide relatively uniform backlight for different parts of the display area 50 of the liquid crystal panel 5 that conforms to the visual law of the human eye.

In this embodiment, the light emitting devices 3 are distributed on the first region 21 and/or on the second region 22 and/or on the third region 23 in a lattice form. When the light-emitting devices 3 are distributed in a dot matrix, the distribution of the light-emitting devices 3 in each area of the light-emitting area 2, that is, the first area 21, the second area 22, and the third area 23 is relatively more uniform, and the emitted light R passes through After the optical film 4 covers the display area 50 of the liquid crystal panel 5 , the light R will be more uniform, so it is beneficial for the display area 50 of the liquid crystal panel 5 to present images clearly.

In this embodiment, the frame of the first region 21 is a rectangle as shown in FIG. 3 , a rhombus, a circle, an ellipse or a triangle as shown in FIG. 4 , preferably a rectangle. Usually the display area 50 of the liquid crystal panel 5 is rectangular, and when the light-emitting area 2 in the backlight module has the same shape as the display area 50 of the liquid crystal panel 5, the light-emitting device 3 is not only more convenient to arrange, and the first area 21 is the liquid crystal panel 5. The probability that the backlight provided by the display area 50 of the display area 50 overlaps with the image frame that human eyes pay attention to is relatively high, which is beneficial to improving the display effect of the display area 50 of the liquid crystal panel 5 .

Of course, the shape of the frame of the first region 21 may also be other geometric shapes than the regular shapes listed above, and the configuration may be an irregular shape.

In this embodiment, the frame of the light-emitting area 2 is similar to the frame of the first area 21;

And/or, the border of the first region 21 is similar to the largest border of the second region 22;

And/or, the largest frame of the second area 22 is similar to the largest frame of the third area 23;

And/or, the frame of the first area 21 is similar to the largest frame of the third area 23 .

Preferably, in this embodiment, the frame of the first region 21 , the largest frame of the second region 22 , and the largest frame of the third region 23 are all similar in shape to the frame of the first region 21 .

Since the second area 22 is between the first area 21 and the third area 23, there is a minimum frame in the second area 22, which coincides with the frame of the first area 21, and the maximum frame of the second area 22 It also coincides with the minimum frame of the third area 23 .

In the above structure, the frame of the first area 21, the largest frame of the second area 22, and the largest frame of the third area 23 are easier to observe, and when the light emitting device 3 is installed in the light emitting area 2, the operation of setting the light emitting device 3 is simpler Convenient and less error-prone.

As shown in FIG. 3 , in this embodiment, the frame of the light-emitting area 2, the frame of the first area 21, the largest frame of the second area 22, and the largest frame of the third area 23 are all rectangular, wherein:

The length L1 of the border of the first region 21 is not less than 1/2 of the length L of the border of the light emitting region 2;

And/or, the width W1 of the frame of the first region 21 is not less than 1/2 of the width W of the frame of the light emitting region 2;

And/or, the difference between the length of the border of the third region 23 and the maximum border of the second region 22, that is, twice the length indicated by L3 in FIG. 3 is not greater than 1/6 of the length L of the border of the light emitting region 2;

And/or, the difference between the width of the frame of the third region 23 and the maximum frame of the second region 22 , ie twice the length indicated by W3 in FIG. 3 , is not greater than 1/6 of the width W of the frame of the light emitting region 2 .

The first area 21 is the place most easily observed by human eyes on the liquid crystal display area 50 of the liquid crystal panel 5, and is also the place where the image picture requires the clearest. This area requires a higher brightness of the backlight. When the length and width meet the above size requirements, it is possible to use less light-emitting devices 3 while ensuring that the image picture is clearly displayed on the liquid crystal display area 50, so as to reduce the cost as low as possible.

The edge portion of the liquid crystal display area 50 of the liquid crystal panel 5 usually does not display very complex or important image frames. If it is large, the defect caused to the entire image screen displayed on the liquid crystal display area 50 of the liquid crystal panel 5 will not be too conspicuous.

In this embodiment, the pitch P2 between adjacent light emitting devices 3 distributed in the second region 22 is not greater than 1.08 times the pitch P1 between adjacent light emitting devices 3 distributed in the first region 21;

And/or, the pitch P3 between adjacent light emitting devices 3 distributed in the third region 23 is not greater than 1.2 times the pitch P1 between adjacent light emitting devices 3 distributed in the first region 21 .

When the spacing P1, P2 or P3 between adjacent light emitting devices 3 in different areas in the light emitting area 2 meets the above-mentioned size, it can ensure that the overall image displayed on the liquid crystal display area 50 of the liquid crystal panel 5 can be relatively clear. It is shown that the number of light emitting devices 3 in the second area 22 and the third area 23 can also be saved, thereby saving costs.

In this embodiment, the pitch P2 between adjacent light emitting devices 3 distributed in the second region 22 is 1.04 times the pitch P1 between adjacent light emitting devices 3 distributed in the first region 21;

And/or, the pitch P3 between adjacent light emitting devices 3 distributed in the third region 23 is 1.1 times the pitch P1 between adjacent light emitting devices 3 distributed in the first region 21 .

When the pitch P1, P2 or P3 between adjacent light-emitting devices 3 in different areas in the light-emitting area 2 conforms to the above-mentioned size, it can ensure that the overall image picture displayed on the liquid crystal display area 50 of the liquid crystal panel 5 can be Clearer display, so that the backlight provided by the light-emitting devices 3 in different areas in the light-emitting area 2 passes through the optical film 4 and then transitions more naturally, and can also save light-emitting devices in the second area 22 and the third area 23 as much as possible 3 quantity, thus saving cost.

Of course, the distance P1 , P2 or P3 between adjacent light emitting devices 3 in different regions of the light emitting region 2 may not be limited by the above size.

In this embodiment, in the light emitting region 2, the size between the part of the light emitting devices 3 around the border of the first region 21 and the second region 22 at the junction of the first region 21 and the second region 22 can be the same as that of the light emitting devices 3 in the first region 21. The dimensions between some of the light emitting devices 3 may be the same as the dimensions between the light emitting devices 3 in the second region 22; in this case, the interface forms a transitional structure, which is beneficial to the The uniform fusion between the backlight of the first area 21 and the second area 22;

In the same way, the size between the part of the light-emitting devices 3 around the border of the second region 22 and the third region 23, that is, the largest border of the second region 22, can be the same as the size between the light-emitting devices 3 in the second region 22 Similarly, the dimensions between some of the light emitting devices 3 may be the same as the dimensions between the light emitting devices 3 in the third region 23 .

In this embodiment, the light emitting device 3 is a point light source or a line light source, preferably a point light source. Because the optical film 4 can improve the brightness uniformity of the light R passing through it, and convert the point light source and the line light source into a surface light source, thereby ensuring that the backlight provided for the display area 50 of the liquid crystal panel 5 is uniform, thereby ensuring that the liquid crystal The image displayed in the display area 50 of the panel 5 is clear and uniform, so whether the light emitting device 3 is a point light source or a line light source, or a combination of point light source and line light source, it can be set in the light emitting area 2 on the backplane 1 . When the light emitting device 3 is a point light source, the distance between the point light sources can be adjusted more flexibly.

In this embodiment, the light emitting device 3 is an LED. LED has the advantages of high brightness, low power consumption and easy control. Of course, the light emitting device 3 may also use other electronic devices capable of emitting light other than LEDs.

Example 2:

As shown in Figure 5, this embodiment is basically the same as Embodiment 1, the difference is that: in this embodiment, the frame of the light-emitting area 2 and the frame of the first area 21 are rectangular, and the frame of the first area 21 is rectangular along its width. The center line extending in the direction and/or length direction overlaps with the center line extending in the width direction and/or length direction of the frame of the light-emitting area 2. The second area 22 and the third area 23 both include two parts. The second area 22 The two parts of and the two parts of the third region 23 are symmetrical about the center line.

In this structure, the light-emitting devices 3 in the light-emitting area 2 on the backplane 1 are symmetrically distributed. The backplane 1 can be spliced and assembled by multiple symmetrical parts, and the reflective area can also be spliced and assembled by multiple symmetrical parts. made.

Usually, the light-emitting device 3 is arranged on a circuit board or other carrier (such as a metal plate such as an aluminum plate), and then the circuit board or other carrier is fixed on the backplane 1 . In this structure, the light emitting area 2 can also be spliced by a plurality of individual circuit boards or other supporting parts.

Example 3:

As shown in FIG. 6 , this embodiment is basically the same as Embodiment 1, except that the backlight module in this embodiment is a side-light liquid crystal backlight module. In the side-lit liquid crystal backlight module, the light R emitted by the light-emitting device 3 enters the light guide plate 6 from the side of the back plate 1 and passes through the light guide plate 6 to irradiate on the reflective film 7, and then is reflected by the reflective film 7, and then The light passes through the light guide plate 6 to irradiate the optical film 4 , and finally emits from the optical film 4 and irradiates to the liquid crystal panel 5 .

As shown in Figure 7 and Figure 8, the liquid crystal display provided by the embodiment of the present invention includes the backlight module as shown in Figure 3, Figure 5 or Figure 6 provided by the above-mentioned embodiment of the present invention and the backlight module shown in Figure 7 Or the liquid crystal panel 5 shown in Figure 8, wherein:

The light R emitted by the light emitting device 3 in the light emitting area 2 passes through the optical film 4 and irradiates on the liquid crystal display area 50 of the liquid crystal panel 5 .

Since the liquid crystal display provided by the embodiment of the present invention has the same technical features as the backlight module provided by the above embodiment of the present invention, it can also produce the same technical effect and solve the same technical problem.

In this embodiment, the light R emitted by the light emitting device 3 in the first area 21 provides backlight for the first part on the liquid crystal display area 50 of the liquid crystal panel 5;

The light R emitted by the light emitting device 3 in the second area 22 provides backlight for the second part on the liquid crystal display area 50 of the liquid crystal panel 5;

The first part and the second part have different requirements for the brightness of the backlight.

In this embodiment, the light-emitting area 2 may also include a third area 23. At this time, the light R emitted by the light-emitting device 3 in the third area 23 provides backlight for the third part on the liquid crystal display area 50 of the liquid crystal panel 5. The brightness requirements for the backlight in the three parts are different from the brightness requirements in the first part for the backlight and the brightness requirements for the backlight in the second part. In this embodiment, the specific positions of the first part, the second part and the third part on the liquid crystal display area 50 of the liquid crystal panel 5 can be manually defined.

Of course, in this embodiment, the light-emitting area 2 can also include more than three areas, and the liquid crystal display area 50 of the liquid crystal panel 5 can also include more than three parts, and each part in the liquid crystal display area 50 of the liquid crystal panel 5 can emit light correspondingly. An area on area 2.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (12)

1. module backlight is characterized in that: comprises backboard, is distributed in a plurality of luminescent devices and blooming piece in the light-emitting zone on the described backboard, wherein:

The light that described luminescent device in the described light-emitting zone is launched sees through described blooming piece;

Described light-emitting zone comprises first area and second area at least, and the spacing that is distributed between the adjacent described luminescent device in the described first area is different with spacing between the adjacent described luminescent device that is distributed in the described second area.

2. module backlight according to claim 1, it is characterized in that: be distributed in the core of the described blooming piece of light penetration that the described luminescent device in the described first area launches, and be distributed in spacing between the adjacent described luminescent device in the described first area less than the spacing between the adjacent described luminescent device that is distributed in the described second area.

3. module backlight according to claim 2, it is characterized in that: described light-emitting zone also comprises the 3rd zone, be distributed in the described blooming piece of the described luminescent device described blooming piece of the light penetration edge part of launching in described the 3rd zone, be distributed in the core and the described blooming piece between its edge part of the described blooming piece of light penetration that the described luminescent device in the described second area launches, be distributed in spacing between the adjacent described luminescent device in the described second area less than the spacing that is distributed between the interior adjacent described luminescent device in described the 3rd zone.

4. module backlight according to claim 3, it is characterized in that: described first area is positioned at the core of described light-emitting zone, described the 3rd zone is positioned at the edge part of described light-emitting zone, and described second area is between the edge part of the core of described light-emitting zone and described light-emitting zone.

5. module backlight according to claim 3 is characterized in that: described luminescent device is lattice-like and is distributed on the described first area and/or on the described second area and/or on described the 3rd zone.

6. module backlight according to claim 3 is characterized in that: the frame of described first area is rectangular, rhombus, circle, ellipse or triangle;

And/or the frame of described light-emitting zone and the frame of described first area are similar figures;

And/or the maximum frame of the frame of described first area and described second area is similar figures;

And/or the maximum frame of described second area and the maximum frame in described the 3rd zone are similar figures;

And/or the maximum frame in the frame of described first area and described the 3rd zone is similar figures.

7. module backlight according to claim 6 is characterized in that: the maximum frame of the frame of described light-emitting zone, the frame of described first area, described second area and the maximum frame in described the 3rd zone are all rectangular, wherein:

The length of the frame of described first area be not less than described light-emitting zone frame length 1/2;

And/or, the width of the frame of described first area be not less than described light-emitting zone frame width 1/2;

And/or, the difference of the maximum frame of the length of the frame in described the 3rd zone and described second area be not more than described light-emitting zone frame length 1/6;

And/or, the difference of the maximum frame of the width of the frame in described the 3rd zone and described second area be not more than described light-emitting zone frame width 1/6.

8. module backlight according to claim 6, it is characterized in that: the frame of described light-emitting zone and the frame of described first area are all rectangular, center line that the frame of described first area extends along its width and/or length direction and the center line overlaid of the frame of described light-emitting zone along its width and/or length direction extension, described second area and described the 3rd zone include two parts, and the two parts in two parts of described second area and described the 3rd zone are all symmetrical with described center line.

9. module backlight according to claim 3 is characterized in that: be distributed in spacing between the adjacent described luminescent device in the described second area and be not more than 1.08 times of spacing between the adjacent described luminescent device that is distributed in the described first area;

And/or, be distributed in spacing between the adjacent described luminescent device in described the 3rd zone and be not more than 1.2 times of spacing between the adjacent described luminescent device that is distributed in the described first area.

10. module backlight according to claim 9 is characterized in that: be distributed in spacing between the adjacent described luminescent device in the described second area and be 1.04 times of spacing between the adjacent described luminescent device that is distributed in the described first area;

And/or, be distributed in spacing between the adjacent described luminescent device in described the 3rd zone and be 1.1 times of spacing between the adjacent described luminescent device that is distributed in the described first area.

11. module backlight according to claim 1 is characterized in that: described luminescent device is spot light or line source.

12. a LCDs is characterized in that: comprise arbitrary described module backlight of claim 1 to 11 and liquid crystal panel, wherein:

The light that described luminescent device in the described light-emitting zone is launched sees through described blooming piece and shines on the liquid crystal display area of described liquid crystal panel.

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