CN210271551U - Light source structure, backlight module and display device - Google Patents
Light source structure, backlight module and display device Download PDFInfo
- Publication number
- CN210271551U CN210271551U CN201921564449.5U CN201921564449U CN210271551U CN 210271551 U CN210271551 U CN 210271551U CN 201921564449 U CN201921564449 U CN 201921564449U CN 210271551 U CN210271551 U CN 210271551U
- Authority
- CN
- China
- Prior art keywords
- light source
- emitting units
- light
- distance
- source structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a light source structure, backlight unit and display device. The light source structure comprises a substrate and a plurality of light source groups. The light source groups are arrayed on the substrate. Each light source group comprises a plurality of light emitting units. Any two adjacent light emitting units in each light source group have a first distance therebetween. The nearest light-emitting units in any two adjacent light source groups have a second distance therebetween. The second distance is less than the first distance.
Description
Technical Field
The present invention relates to a light source device, and more particularly to a light source structure, a backlight module and a display device.
Background
Fig. 1 is a schematic diagram illustrating a conventional light source structure. The light source structure 100 generally used in the direct-type backlight module mainly includes a substrate 110 and a plurality of light emitting diodes 120 arranged on the substrate 110 at equal intervals, and light generated from the light emitting diodes 120 can be further mixed by an optical film to form a surface light source.
However, referring to fig. 2, fig. 2 is a graph showing a luminance simulation using a conventional light source structure. As can be seen from fig. 2, the light emitting diodes 120 are arranged at equal intervals, so that a dark band (dark region) with a width W1 and a dark band (dark region) with a width W2 are easily formed between adjacent light emitting diodes, which results in the appearance of the backlight module appearing with distinct bright and dark bands and uneven brightness.
SUMMERY OF THE UTILITY MODEL
Therefore, an object of the utility model is to provide a light source structure, backlight unit and display device, this light source module can produce the even light of luminance to promote backlight unit and display device's optics outward appearance.
According to the above object of the present invention, a light source structure is provided. The light source structure comprises a substrate and a plurality of light source groups. The light source groups are arrayed on the substrate. Each light source group comprises a plurality of light emitting units. Any two adjacent light-emitting units in each light source group have a first distance therebetween, and the closest light-emitting unit in any two adjacent light source groups have a second distance therebetween. Wherein the second distance is less than the first distance.
According to an embodiment of the present invention, the light source groups are arranged at equal intervals, and the first distance is smaller than a half of the interval between the adjacent light source groups.
According to an embodiment of the present invention, the light emitting units in each of the light source groups are arranged in a square.
According to an embodiment of the present invention, the light emitting units in each of the light source groups are arranged along a circular track to form a regular polygon.
According to an embodiment of the present invention, a relation between the radius of the circular track and the distance between the adjacent light source groups is 3.5A3 ≧ S1>2A3, where A3 is the radius and S1 is the distance.
According to an embodiment of the present invention, the substrate has a first side extending along a first direction and a second side extending along a second direction, wherein the first side is perpendicular to the second side. The light source groups are arrayed along a first direction and a second direction.
According to an embodiment of the present invention, a connection line between any two adjacent light emitting units in each of the light source groups is not parallel to the first side or the second side.
According to an embodiment of the present invention, the light emitting units in each of the light source groups are arranged along a circular track to form a regular polygon, wherein the regular polygon has a length of a side, and the circular track has a center of a circle. A first connecting line is arranged between the centers of any two adjacent circular tracks, a second connecting line is arranged between any one of the light-emitting units in each light source group and the center of the corresponding circular track, and the included angle between the first connecting line and the second connecting line is not equal to 180 degrees divided by the length of the side.
According to the above object of the present invention, a backlight module is provided. The backlight module comprises the light source structure and at least one optical film. The optical film is arranged above the light source structure.
According to the above object of the present invention, a display device is provided. The display device comprises the backlight module and the display panel. The display panel is arranged in front of the backlight module.
According to the above, the utility model discloses changed the original design rule of light source structure, through construct a light source group back with a plurality of luminescence units, again with these light source group arrays on the base plate, make the distance between two nearest luminescence units between the adjacent light source group simultaneously be less than the distance of the adjacent luminescence unit in the light source group to can reduce the dark band width in whole light source structure light emitting area, promote backlight unit's the degree of consistency.
Drawings
For a more complete understanding of the embodiments and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram illustrating a conventional light source structure;
FIG. 2 is a graph of luminance simulation using a prior art light source configuration;
FIG. 3 is a schematic device diagram illustrating a light source structure according to a first embodiment of the present invention;
fig. 4 is a luminance simulation diagram of a light source structure using the first embodiment of the present invention;
FIG. 5 is a schematic device diagram illustrating a light source structure according to a second embodiment of the present invention; and
fig. 6 is a schematic device diagram illustrating a display device according to an embodiment of the present invention.
Detailed Description
Fig. 3 is a schematic device diagram illustrating a light source structure according to a first embodiment of the present invention. In the present embodiment, the light source structure 200 mainly includes a substrate 210 and a plurality of light source groups 220. The substrate 210 has a first side 211 and a second side 212 perpendicular to the first side 211. The first side 211 extends along the first direction D1, the second side 212 extends along the second direction D2, and the first direction D1 is perpendicular to the second direction D2. As shown in fig. 3, in the present embodiment, the light source groups 220 are arrayed along a first direction D1 and a second direction D2. In one embodiment, the light source groups 220 are arranged on the substrate 210 at equal intervals, and a distance S1 exists between any two adjacent light source groups 220.
Referring to fig. 3 again, in the present embodiment, each light source group 220 includes a plurality of light emitting units 221, and the light emitting units 221 in each light source group 220 are arranged along a circular track to form a regular polygon. A connecting line between any two adjacent light emitting diodes 221 in each light source group 220 is not parallel to the first side 211 or the second side 212. In the embodiment of fig. 3, the light emitting units 221 in each light source group 220 are arranged in a square, and any side length of the square is not parallel to the first side 211 or the second side 212. More specifically, the plurality of light emitting units 221 are arranged as non-parallel to the edge of the display (i.e., the first side 211 or the second side 212 of the substrate 210) as possible. Therefore, in the visual effect, a user is less prone to find the bright band with the regular arrangement of the light sources. In one embodiment, in each light source group 220, any two adjacent light emitting units 221 along the circular trajectory have a first distance a1 therebetween. The distance between the center of all the light emitting units 221 of each light source group 220 (i.e., the center position of the circular track to which each light source group 220 belongs) and the center of all the light emitting units 221 of the adjacent light source group 220 is defined as a spacing S1. A distance between any light emitting unit 221 of the light source group 220 and the light emitting unit 221 of the adjacent light source group 220 closest to any light emitting unit 221 is defined as a second distance a 2. In other words, the distance between the nearest light emitting units 221 in any two adjacent light source groups 220 is the second distance a 2. In the present embodiment, the second distance a2 is less than the first distance a 1. With this design, the light source structure 200 can generate a better light equalizing effect. In some embodiments, the length of the first distance a1 is less than half of the spacing S1 between any two adjacent light source groups 220.
Referring to fig. 4, fig. 4 is a luminance simulation diagram of a light source structure according to a first embodiment of the present invention. As can be seen from fig. 4, compared to the conventional light source structure 100 of fig. 1, the distance (for example, the second distance a2) between the nearest light emitting units 221 in any two adjacent light source groups 220 can be shortened in the first direction D1 and/or the second direction D2 by rotating the light emitting units 221 along the regular polygon formed by the circular tracks by a certain angle, so as to be designed to be smaller than the first distance a1 between any two adjacent light emitting units 221 in each light source group 220, and further reduce the width W3 and the width W4 of the dark band of the light source structure 200 of fig. 3. That is, the area of the dark regions of fig. 4 is significantly smaller than the area of the dark regions of fig. 2, and the contrast of the dark and light colors of fig. 4 is smaller than that of the dark and light colors shown in fig. 2, indicating that the light emission of fig. 4 is more uniform. Therefore, when the light source structure 200 of the present embodiment is applied to a backlight module and used in combination with an optical film, a uniform appearance can be achieved.
It should be noted that, in each light source group 220, although the light emitting units 221 are arranged along the circular track to form a regular polygon, any side of the regular polygon is not parallel to the first side 211 or the second side 212 of the substrate 210. In one embodiment, as shown in fig. 3, a first connection line B1 is located between the centers of any two adjacent circular tracks, and a second connection line B2 is located between any one of the light-emitting units 221 in each light source group 220 and the center of its corresponding circular track. The included angle theta 1 between the first connecting line B1 and the second connecting line B2 is not equal to 180 degrees divided by the length of the side of the regular polygon. Taking fig. 3 as an example, the light emitting units 221 are arranged in a square along a circular track, so the included angle θ 1 is not equal to 180 degrees divided by 4 (i.e. 45 degrees), which is to eliminate the conventional rectangular array arrangement of the light emitting units 221 in the rotated light source group. Therefore, in each light source group 220, when the length of the regular polygon formed by the light emitting units 221 arranged along the circular track is determined, the included angle θ 1 can be determined according to the requirement of the user, so as to determine the rotation angle of the regular polygon formed by the light emitting units 221 arranged along the circular track.
It should be noted that, taking the light source groups 220 arranged in a quadrilateral shape as an example, in order to satisfy the premise that the light emitting units 221 rotate without overlapping, the distance S1 between any two adjacent light source groups 220 should exceed 2 times of the length of the third distance A3, where a third distance A3 (i.e., the radius of the circular track) is between any light emitting unit 221 in each light source group 220 and the center of the corresponding circular track. On the other hand, in order to avoid a large dark band between adjacent light source groups 220, the spacing S1 between any two adjacent light source groups 220 should not be greater than 3.5 times the length of the third distance A3. That is, in each light source group 220, the relationship between the radius of the circular trajectory (third distance A3) and the spacing S1 between the adjacent light source groups 220 can be expressed by the relationship 3.5A3 ≧ S1>2 A3. Thus, the light source structure 200 of the present embodiment can ensure that the backlight module has a uniform appearance when applied to the backlight module and used with an optical film.
It should be noted that the light emitting units 221 of the light source group 220 in the embodiment of fig. 3 are arranged in a square along a circular track for exemplary purposes only. In other embodiments, the light emitting units in each light source group can be arranged in different shapes. Fig. 5 is a schematic device diagram illustrating a light source structure according to a second embodiment of the present invention. The light source structure 300 shown in fig. 5 also includes a substrate 310 and a plurality of light source groups 320. The substrate 310 has a first side 311 and a second side 312. The first side 311 extends along the first direction D1, the second side 312 extends along the second direction D2, and the first direction D1 is perpendicular to the second direction D2. In the present embodiment, the light source groups 320 are arrayed along the first direction D1 and the second direction D2. In one embodiment, the light source groups 320 are arranged on the substrate 310 at equal intervals, and a space S2 is formed between any two adjacent light source groups 320.
Referring to fig. 5 again, in the present embodiment, each light source group 320 includes a plurality of light emitting units 321. In the embodiment of fig. 5, the light emitting units 321 in each light source group 320 are arranged in a regular triangle along a circular trajectory. In one embodiment, in each light source group 320, any two adjacent light-emitting units 321 along the circular track have a first distance a4 therebetween. In addition, a second distance a5 is provided between the nearest light-emitting units 321 in any two adjacent light source groups 320. In the present embodiment, the second distance a5 is less than the first distance a 4. With this design, the light source structure 300 can also reduce dark bands among the light source groups 320, resulting in a good light-equalizing effect.
Similarly, in each light source group 320, although the light emitting units 321 are arranged in a regular triangle along the circular track, any side of the regular triangle is not parallel to the first side 311 or the second side 312 of the substrate 310. In the embodiment shown in fig. 5, a first connection line B3 exists between the centers of any two adjacent circular tracks, and a second connection line B4 exists between any one of the light-emitting units 321 in each light source group 320 and the center of its corresponding circular track. The included angle θ 2 between the first connection line B3 and the second connection line B4 is not equal to 180 degrees divided by the length of the side of the regular triangle (i.e. 60 degrees). Therefore, in each light source group 320, in the case of determining the number of the side lengths of the regular polygon formed by the light emitting units 321 arranged along the circular track, the user can determine the rotation angle of the regular polygon formed by the light emitting units 321 arranged along the circular track by changing the included angle θ 2.
It should be noted that, although the foregoing embodiments have been described by taking the light emitting units respectively arranged in a square and a regular triangle as an example, the invention is not limited thereto. That is, in other embodiments, the light emitting units may be arranged in other regular polygons, such as regular pentagons, regular hexagons, regular heptagons, and the like.
Fig. 6 is a schematic device diagram illustrating a display device according to the present invention. The display device 400 of the present embodiment includes a backlight module 410 and a display panel 420. The backlight module 410 includes the light source structure 200 shown in fig. 3 and at least one optical film 411 disposed above the light source structure 200. As shown in fig. 6, the display panel 420 is disposed in front of the backlight module 410, so that the light generated by the light source structure 200 can enter the display panel 420 through the optical film 411 to emit light from the display panel 420. It should be noted that the light source structure 200 shown in fig. 3 is applied to the display device in the embodiment for illustration only, and is not intended to limit the present invention. The light source structure of the other embodiments, for example, the light source structure 300 shown in fig. 5, can also be applied to a display device, and can produce the same effect.
By the above, the utility model discloses embodiment can know, the utility model discloses changed the original design rule of light source structure, through construct a light source group back with a plurality of luminescence units, again with these light source group arrays on the base plate, make simultaneously between the adjacent light source group distance between two nearest luminescence units be less than the distance of the adjacent luminescence unit along circular orbit in the light source group to can reduce the dark band width in whole light source structure light emitting area, promote backlight unit's the degree of consistency.
Although the embodiments of the present invention have been described above, it is not intended to limit the present invention. Numerous modifications and adaptations thereof may be made by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the appended claims.
[ List of reference numerals ]
100 light source structure
110 substrate
120 light emitting diode
200 light source structure
210 base plate
211 first side edge
212 second side edge
220 light source group
221 light emitting unit
300 light source structure
310 base plate
311 first side edge
312 second side edge
320 light source group
400 display device
410 backlight module
411 optical film
420 display panel
321 light emitting unit
A1 first distance
A2 second distance
A3 third distance
A4 first distance
A5 second distance
B1 first connection line
B2 second connection
B3 first connection line
B4 second connection
D1 first direction
D2 second direction
Spacing S1
Width of W1
Width of W2
Width of W3
Width of W4
Angle of theta 1
And theta 2.
Claims (10)
1. A light source structure, comprising:
a substrate; and
a plurality of light source groups arrayed on the substrate, wherein each light source group comprises a plurality of light emitting units, a first distance is arranged between any two adjacent light emitting units in each light source group, and a second distance is arranged between the nearest light emitting units in any two adjacent light source groups;
wherein the second distance is less than the first distance.
2. The light source structure according to claim 1,
the light source groups are arranged at equal intervals, and the first distance is smaller than half of the interval between the adjacent light source groups.
3. The light source structure according to claim 2,
the light emitting units in each light source group are arranged in a square.
4. The light source structure according to claim 1,
the light emitting units in each light source group are arranged along a circular track to form a regular polygon.
5. The light source structure according to claim 4,
the relation between the radius of the circular track and the spacing between the adjacent light source groups is 3.5A3 ≧ S1>2A3, where A3 is the radius and S1 is the spacing.
6. The light source structure according to claim 4,
the substrate is provided with a first side edge extending along a first direction and a second side edge extending along a second direction, wherein the first side edge is perpendicular to the second side edge; and
the group of light sources is arrayed along the first direction and the second direction.
7. The light source structure according to claim 6,
the connecting line between any two adjacent light-emitting units in each light source group is not parallel to the first side edge or the second side edge.
8. The light source structure according to claim 1,
the light emitting units in each light source group are arranged into a regular polygon along a circular track, wherein the regular polygon has the number of side lengths, and the circular track has a circle center; and
a first connecting line is arranged between the circle centers of any two adjacent circular tracks, a second connecting line is arranged between any one of the light-emitting units in each light source group and the circle center of the corresponding circular track, and the included angle between the first connecting line and the second connecting line is not equal to 180 degrees divided by the length of the side.
9. A backlight module, comprising:
the light source structure according to any one of claims 1 to 8; and
at least one optical film disposed over the light source structure.
10. A display device, comprising:
a backlight module according to claim 9; and
and the display panel is arranged in front of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564449.5U CN210271551U (en) | 2019-09-19 | 2019-09-19 | Light source structure, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564449.5U CN210271551U (en) | 2019-09-19 | 2019-09-19 | Light source structure, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210271551U true CN210271551U (en) | 2020-04-07 |
Family
ID=70019467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921564449.5U Active CN210271551U (en) | 2019-09-19 | 2019-09-19 | Light source structure, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210271551U (en) |
-
2019
- 2019-09-19 CN CN201921564449.5U patent/CN210271551U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112997234B (en) | Light source structure, backlight module and display device | |
| CN106783937B (en) | Array substrate with curve-shaped edge, display panel and display device | |
| US20190187521A1 (en) | Backlight module | |
| US7607816B2 (en) | Light guide plate and backlight module adopting same | |
| US8786804B2 (en) | Surface light source device and LCD unit | |
| JP2003132722A (en) | Surface-formed lightsource device and liquid crystal display device provided with the same | |
| US9690034B2 (en) | Illumination device and display device | |
| JP6380739B2 (en) | Surface light source device | |
| KR20200010561A (en) | Heterogeneous display screens and display devices | |
| CN110707141B (en) | Organic light emitting display substrate and display device | |
| JP4678058B2 (en) | Light control member, light emitting device, and display device | |
| US20100220246A1 (en) | Backlight device and video display apparatus using the same | |
| CN210271551U (en) | Light source structure, backlight module and display device | |
| JPH10214035A (en) | Back light device and liquid crystal display device using the same | |
| US20050099793A1 (en) | Backlight unit having an inclined light emission surface | |
| US6864864B2 (en) | Virtual stereoscopic light emitting diode display panel | |
| WO2021031318A1 (en) | Transparent display panel | |
| JP2008032841A (en) | Liquid crystal display and portable information terminal device | |
| CN117915691A (en) | Display panel and display device | |
| US8092066B2 (en) | Surface light source device, lighting device and image display device | |
| US20130294104A1 (en) | Lighting Device | |
| US20230367045A1 (en) | Optical film and display device | |
| JP6989303B2 (en) | Display device | |
| CN117580406A (en) | Pixel array and display panel | |
| TWM651163U (en) | Optical structural film and light source module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |