CN115857228A - Side-in miniLED (light-emitting diode) zone-controlled backlight module - Google Patents
Side-in miniLED (light-emitting diode) zone-controlled backlight module Download PDFInfo
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- CN115857228A CN115857228A CN202310166239.5A CN202310166239A CN115857228A CN 115857228 A CN115857228 A CN 115857228A CN 202310166239 A CN202310166239 A CN 202310166239A CN 115857228 A CN115857228 A CN 115857228A
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Abstract
The invention relates to a side-in miniLED (light emitting diode) zone-controlled backlight module, which comprises a light guide plate, wherein a plurality of criss-cross separating wire grooves are formed in the outer surface of the lower side of the light guide plate, the separating wire grooves divide the outer surface of the lower side of the light guide plate into a plurality of light guide grids, the light guide grids are uniformly distributed on the outer surface of the lower side of the light guide plate in a square array, LED lamp beads are arranged at one corner of each light guide grid, a plurality of polarized light sites are fixedly connected to the outer surface of the lower side of each light guide grid and the upper side of the light guide plate, each row of LED lamp beads are jointly arranged on a support lamp bar, so that the side-in installation and uniform light emitting of the LED lamp beads can be realized, the thickness of the backlight module is reduced, the zone control can be realized, the light intensity is adjusted by adjusting the current of the LED lamp beads arranged in each light guide grid, the distance between the two ends of the LED lamp beads and the corners on the light guide grids adjacent to the LED lamp beads is kept consistent, and the polarized light spots are prevented from being difficult to arrange due to the influence of the light emitting angle.
Description
Technical Field
The invention relates to the technical field of LED lamp bead light projection, in particular to a side-entering miniLED zone control backlight module.
Background
The liquid crystal display device has become an indispensable display device in people's life, and the demand of the liquid crystal display device is increasing, but the light intensity is not uniform at different positions of the current liquid crystal display screen, which becomes a great limiting factor of the liquid crystal display device.
Patent document with publication number CN113655666A discloses a side income formula LED lamp pearl backlight module of high contrast, relates to mobile unit technical field, and its technical scheme is: including backlight module body, chase and heat dissipation base down, backlight module body is including gluing the frame, it installs FSTN glass to glue the frame top, FSTN glass one side is installed VHB and is glued, FSTN glass top fixed connection TFT glass, DBEF is installed to backlight module body bottom, increase light is installed to the DBEF bottom, it increases light to go up to increase light bottom and install down, increase light bottom down and install the diffusion barrier, the beneficial effect of the above-mentioned patent is, has promoted the contrast that the liquid crystal display module assembly of illumination is made in the side income formula backlight greatly, and relative straight following formula is like the high amount backlight and the driving cost of miniLED as the light source, and has promoted product quality, has improved backlight module body and has prevented that solar radiation takes place the exposure dazzling of display content, when light was dark at the tunnel night, the dazzling and the ability of anti-glare that the luminance too big arouses.
The device has the following defects that the device cannot perform fine regional dimming when in use, and the dimming effect is poor.
Disclosure of Invention
The present invention is directed to solve the above problems and disadvantages, and to provide a side-entry miniLED backlight module with partitioned control, which improves the overall working efficiency.
The technical problem solved by the invention is as follows:
(1) When the device is used, the regional dimming can not be finely performed, and the dimming effect is poor.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a side income formula miniLED zone control's backlight unit, including the light guide plate, set up a plurality of vertically and horizontally staggered's separation wire casing on the downside surface of light guide plate, separate the wire casing and separate into a plurality of leaded light square with the downside surface of light guide plate, a plurality of leaded light square is square array evenly distributed at the downside surface of light guide plate, LED lamp pearl is all installed to an angle department in every leaded light square, the downside surface in leaded light square and the last equal a plurality of polarisation site of side of light guide plate, every row of LED lamp pearl is all installed jointly on supporting the lamp strip, it attaches the downside at the light guide plate to support the lamp strip.
As a further scheme of the invention, the LED lamp beads are guided by the independent light-emitting surfaces on the outer surfaces of two sides of each light guide grid, an air layer is formed by the criss-cross separation lines, so that the edge of each light guide grid forms a high-low refractive index interface, different light-emitting surfaces formed by each light guide grid are distinguished, light emitted by the LED lamp beads is deflected by the polarized light grid points on each light guide grid, and total reflection of light in the light guide grids is destroyed by the outer surface inclination angles of the polarized light grid points, so that all light emitted by the LED lamp beads is converted from transverse light to longitudinal light.
As a further scheme of the invention, the lower side surface of the light guide grid is square, the distances between two ends of the LED lamp beads and two corners of the light guide grid adjacent to the LED lamp beads are kept consistent, and the distance between the plurality of polarized light net points on the light guide grid is more distant from the LED lamp beads and more densely distributed.
As a further scheme of the invention, the groove depth of the separation line groove is at least one half of the thickness of the light guide plate, the size of the light guide square increases along with the increase of the luminous intensity of the LED lamp beads, and the thickness of the light guide plate decreases along with the increase of the size of the light guide square.
As a further aspect of the invention, a reflective plate is mounted on the lower side of the light guide plate, and a back frame is mounted on the lower side of the reflective plate.
As a further proposal of the invention, the upper side of the light guide plate is provided with a diffusion film, a prism film and a DEBUFF film from bottom to top in sequence.
As a further aspect of the invention, the light guide plate, the reflection plate, the diffusion film, the prism film, and the DEBUFF film are collectively mounted by a back frame support.
As a further scheme of the invention, mounting seats for butt joint installation are installed at four corners of the lower side of the back frame.
The invention has the beneficial effects that:
(1) The LED lamp beads are guided by the independent light-emitting surfaces on the outer surfaces of two sides of each light guide grid, an air layer is formed by criss-cross separation line grooves, so that the edges of each light guide grid form interfaces with high and low refractive indexes, different light-emitting surfaces formed by each light guide grid are separated by total reflection, light emitted by the LED lamp beads is deflected by the polarized light net points on each light guide grid, total reflection of light in the light guide grids is damaged by the outer surface inclination angles of the polarized light net points, and all light emitted by the LED lamp beads is converted into longitudinal light from transverse light, so that the side-in installation and uniform light emitting of the LED lamp beads can be realized, the thickness of a backlight module is reduced, the partition control can be realized, and the light intensity is adjusted by adjusting the current of the LED lamp beads arranged in each light guide grid;
(2) According to the luminous intensity of different LED lamp pearls, set up the leaded light square of different sizes, make the two looks adaptation, ensure that can evenly go out light, can exhaust the light energy of LED lamp pearl in the leaded light square again, and set up the light guide plate of thickness looks adaptation, cooperate the optical path of different LED lamp pearls, set up the separation wire casing of degree of depth looks adaptation simultaneously, weaken the boundary between each independent light emitting area, make bright dark transition unobtrusive, the interval through two adjacent corners of LED lamp pearl on the both ends of LED lamp pearl and the leaded light square of two and LED lamp pearl keeps unanimous, make avoid being difficult to arrange the polarisation site because of the influence of luminous angle when LED lamp pearl is luminous, provide sufficient optical path for LED lamp pearl as much as possible simultaneously, make the light energy of LED lamp pearl fully consume, fully deflect.
Drawings
To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a side view of the overall structure of the present invention;
FIG. 2 is a top view of the light guide plate according to the present invention;
FIG. 3 is a top view of the overall structure of a light guide grid according to the present invention;
FIG. 4 is a perspective view of a light guide plate according to the present invention;
in the figure: 1. a light guide plate; 101. separating the wire grooves; 102. a light guide grid; 103. LED lamp beads; 104. polarizing mesh points; 2. a reflective plate; 3. supporting the light bar; 4. a diffusion membrane; 5. a prism film; 6. a DEBUFF film; 7. a back frame; 8. and (4) supporting the base.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, characteristics and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Please refer to fig. 1-4: the utility model provides a side income formula miniLED zone control's backlight unit, including light guide plate 1, set up a plurality of vertically and horizontally staggered's separation wire casing 101 on light guide plate 1's the downside surface, separate wire casing 101 and separate into a plurality of leaded light square 102 with light guide plate 1's downside surface, a plurality of leaded light square 102 is square array evenly distributed at light guide plate 1's downside surface, LED lamp pearl 103 is all installed in one corner department of every leaded light square 102, the equal fixedly connected with a plurality of polarisation site 104 in the downside surface of leaded light square 102 and the last side of light guide plate 1, every row of LED lamp pearl 103 all installs jointly on supporting lamp strip 3, supporting lamp strip 3 is attached at light guide plate 1's downside, carry on the circuit that supplies power and debug LED lamp pearl 103 through supporting lamp strip 3.
In this embodiment, the outer surfaces of the two sides of each light guide grid 102 guide light to the LED lamp beads 103 for independent light emitting surfaces, an air layer is formed through the criss-cross separation slots 101, so that the edges of each light guide grid 102 form interfaces with high and low refractive indexes, thereby the different light emitting surfaces formed by each light guide grid 102 are separated by using total reflection, light emitted by the LED lamp beads 103 is deflected through the polarization dots 104 on each light guide grid 102, total reflection of light in the light guide grids 102 is destroyed through the outer surface inclination angles of the polarization dots 104, so that all light emitted by the LED lamp beads 103 is converted from transverse light into longitudinal light, thereby the side-in installation and uniform light emission of the LED lamp beads 103 can be realized, the thickness of the backlight module is reduced, partition control can be realized, and the light intensity can be adjusted by adjusting the current size of the LED lamp beads 103 installed in each light guide grid 102.
The groove depth of the separation line groove 101 is at least half of the thickness of the light guide plate 1, the size of the light guide grids 102 is increased along with the increase of the luminous intensity of the LED lamp beads 103, the thickness of the light guide plate 1 is reduced along with the increase of the size of the light guide grids 102, during work, the light guide grids 102 with different sizes are arranged according to the luminous intensity of different LED lamp beads 103, the light guide plate and the light guide plate are matched, so that the light guide plate and the light guide plate can uniformly emit light, the light energy of the LED lamp beads 103 can be completely exhausted in the light guide grids 102, the light guide plate 1 with the matched thickness is arranged, the light paths of different LED lamp beads 103 are matched, the separation line groove 101 with the matched depth is arranged, the boundary between the independent light emitting surfaces is weakened, and the bright-dark transition is not abrupt.
The downside of leaded light square 102 is the square, the interval in two corners adjacent with LED lamp pearl 103 keeps unanimous on LED lamp pearl 103's both ends and leaded light square 102, a plurality of polarisation site 104 keeps away from LED lamp pearl 103 intensive distribution more on leaded light square 102, in operation, the interval in two corners adjacent with LED lamp pearl 103 keeps unanimous on both ends through LED lamp pearl 103 and leaded light square 102, make avoid being difficult to arrange polarisation site 104 because the influence of luminous angle when LED lamp pearl 103 is luminous, provide sufficient optical path for LED lamp pearl 103 as far as simultaneously, make the light energy of LED lamp pearl 103 fully consume, fully deflect.
A reflecting plate 2 is arranged on the lower side of the light guide plate 1, and a back frame 75 is arranged on the lower side of the reflecting plate 2;
When the LED light guide module is used, workers guide light to the LED lamp beads 103 through the outer surfaces of two sides of each light guide grid 102 as independent light emitting surfaces, an air layer is formed through the criss-cross separating wire grooves 101, so that the edges of each light guide grid 102 form high and low refractive index interfaces, different light emitting surfaces formed by each light guide grid 102 are separated through total reflection, light emitted by the LED lamp beads 103 is deflected through the polarized light dots 104 on each light guide grid 102, total reflection of light in the light guide grids 102 is damaged through the outer surface inclination angles of the polarized light dots 104, and all light emitted by the LED lamp beads 103 is converted from transverse light into longitudinal light, so that side-in installation and uniform light emission of the LED lamp beads 103 can be realized, the thickness of the backlight module is reduced, partition control can be realized, and the light intensity is adjusted by adjusting the current of the LED lamp beads 103 installed in each light guide grid 102;
according to the luminous intensity of different LED lamp beads 103, set up the light guide square 102 of different sizes, make the two looks adaptation, ensure that can evenly emit light, can also be with the light energy of LED lamp bead 103 all exhaust in light guide square 102, and set up the light guide plate 1 of thickness looks adaptation, cooperate the optical path of different LED lamp beads 103, set up the partition wire casing 101 of degree of depth looks adaptation simultaneously, weaken the boundary between each solitary light emitting area, make the light-dark transition not abrupt, through the both ends of LED lamp bead 103 and light guide square 102 on the interval of two corners adjacent with LED lamp bead 103 keep unanimous, make avoid being difficult to arrange polarisation screen point 104 because of the influence of luminous angle when LED lamp bead 103 is luminous, provide sufficient optical path for LED lamp bead 103 as much as possible simultaneously, make the light energy of LED lamp bead 103 fully consume, fully deflect.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a backlight unit of miniLED zone control of side income formula, a serial communication port, including light guide plate (1), set up a plurality of vertically and horizontally staggered's separation wire casing (101) on the downside surface of light guide plate (1), separate wire casing (101) and separate into a plurality of leaded light square (102), a plurality of with the downside surface of light guide plate (1) leaded light square (102) is square array evenly distributed at the downside surface of light guide plate (1), every LED lamp pearl (103) are all installed to the one corner department of leaded light square (102), the downside surface of leaded light square (102) and the equal fixedly connected with a plurality of polarisation site (104) of last side of light guide plate (1), each row LED lamp pearl (103) all install jointly on supporting lamp strip (3), support lamp strip (3) attached downside at light guide plate (1).
2. The side-in miniLED (micro-LED) zone-controlled backlight module as claimed in claim 1, wherein the light guide surface of the LED lamp beads (103) is light-guided for the independent light-emitting surface by the outer surfaces of the two sides of each light guide grid (102), an air layer is formed by the criss-cross separating wire grooves (101), so that the edge of each light guide grid (102) forms a high-low refractive-index interface, different light-emitting surfaces formed by each light guide grid (102) are distinguished, the light emitted by the LED lamp beads (103) is deflected by the polarized light dots (104) on each light guide grid (102), and the total reflection of the light in the light guide grid (102) is destroyed by the inclination angle of the outer surface of the polarized light dots (104), so that the light emitted by the LED lamp beads (103) is completely converted from the transverse light into the longitudinal light.
3. The side-in miniLED zone-controlled backlight module as claimed in claim 1, wherein the lower surface of the light guide grid (102) is square, the two ends of the LED beads (103) and the two corners of the light guide grid (102) adjacent to the LED beads (103) are uniformly spaced, and the plurality of the polarization dots (104) are distributed more densely on the light guide grid (102) the farther away from the LED beads (103).
4. The side-in miniLED zone-controlled backlight module as claimed in claim 1, wherein the groove depth of the dividing line groove (101) is at least half of the thickness of the light guide plate (1), the size of the light guide grid (102) increases with the increase of the luminous intensity of the LED lamp beads (103), and the thickness of the light guide plate (1) decreases with the increase of the size of the light guide grid (102).
5. A side-in miniLED zone-controlled backlight module as claimed in claim 1, wherein the lower side of the light guide plate (1) is installed with a reflective plate (2), and the lower side of the reflective plate (2) is installed with a back frame (7).
6. The lateral miniLED (light-emitting diode) zone-controlled backlight module as claimed in claim 5, wherein the upper side of the light guide plate (1) is sequentially provided with a diffusion film (4), a prism film (5) and a DEBUFF film (6) from bottom to top.
7. A side-in miniLED zone-controlled backlight module as claimed in claim 6, wherein the light guide plate (1), the reflective plate (2), the diffusion film (4), the prism film (5) and the DEBUFF film (6) are supported and mounted together by a back frame (7).
8. The side-in miniLED zone-controlled backlight module as claimed in claim 7, wherein the back frame (7) has mounting seats (11) mounted at four corners of the lower side for butt-joint installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310166239.5A CN115857228B (en) | 2023-02-27 | 2023-02-27 | Backlight module with side-in type miniLED partition control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310166239.5A CN115857228B (en) | 2023-02-27 | 2023-02-27 | Backlight module with side-in type miniLED partition control function |
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| Publication Number | Publication Date |
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| CN115857228A true CN115857228A (en) | 2023-03-28 |
| CN115857228B CN115857228B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310166239.5A Active CN115857228B (en) | 2023-02-27 | 2023-02-27 | Backlight module with side-in type miniLED partition control function |
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| CN113655666A (en) * | 2021-08-24 | 2021-11-16 | 深圳市瀚达美电子有限公司 | High-contrast lateral-entry LED backlight module |
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2023
- 2023-02-27 CN CN202310166239.5A patent/CN115857228B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200420974A (en) * | 2003-01-23 | 2004-10-16 | Samsung Electronics Co Ltd | Light guide plate and method of fabricating the same |
| US20090052204A1 (en) * | 2006-02-22 | 2009-02-26 | Yoshiaki Kawashima | Surface Light Emitting Apparatus |
| US20080231774A1 (en) * | 2007-02-27 | 2008-09-25 | Naohiro Tomita | Lighting device and display device provided with the same |
| US20090273734A1 (en) * | 2008-05-04 | 2009-11-05 | Feng Li | Structure of light emitting device array |
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| JP2009283377A (en) * | 2008-05-25 | 2009-12-03 | Citizen Electronics Co Ltd | Planar light source and liquid crystal display device |
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| CN115857228B (en) | 2023-05-09 |
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