CN213930500U - Side-in type backlight module - Google Patents
Side-in type backlight module Download PDFInfo
- Publication number
- CN213930500U CN213930500U CN202022291785.6U CN202022291785U CN213930500U CN 213930500 U CN213930500 U CN 213930500U CN 202022291785 U CN202022291785 U CN 202022291785U CN 213930500 U CN213930500 U CN 213930500U
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- Prior art keywords
- guide plate
- light guide
- light
- backlight module
- plate
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- 239000006260 foam Substances 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 2
- 241000254158 Lampyridae Species 0.000 abstract description 4
- 241000131894 Lampyris noctiluca Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model provides a side-in backlight module, which comprises a light guide plate, a reflector plate and an LED lamp source arranged at the light incident side of the light guide plate; the reflecting sheet is fixedly arranged on the lower surface of the light guide plate; one end of the reflector plate close to the LED light source is arranged at a specified distance in a manner of offsetting towards the direction far away from the LED light source relative to one end of the light guide plate close to the LED light source. The utility model discloses a carry out the design of contracting in with reflector plate relative light guide plate, there is not the reflector plate below one side that the below and the light guide plate in LED lamp source are close to the LED lamp source, and the light that consequently the LED lamp source sent conducts in the past when the light guide plate is main, and the light of up conduction gathers and subtracts to eliminate because of the reflector plate to the highlight reflection in LED lamp source leads to the phenomenon that firefly form lamp shadow appears in the display area.
Description
Technical Field
The utility model relates to the burnishing machine technical field especially involves a side income formula backlight unit.
Background
On the backlight module of the existing finishing machine, the reflector plate is randomly placed on the back plate, when the reflector plate extends into the bottom of the LED lamp source, light emitted by the LED lamp source is reflected by the reflector plate and then upwards conducted to reach the light incident side display area, so that the light shadow, namely the firefly phenomenon, appears in the light incident side display area.
Disclosure of Invention
The utility model aims at providing a side income formula backlight module to solve current light complete machine and lead to appearing the problem of glowworm lamp shadow because of the reflector plate setting below the LED lamp source.
The technical scheme of the utility model is that:
a side-in backlight module comprises a light guide plate, a reflector plate and an LED lamp source arranged at the light incident side of the light guide plate; the reflecting sheet is fixedly arranged on the lower surface of the light guide plate; one end of the reflector plate close to the LED light source is arranged at a specified distance in a manner of offsetting towards the direction far away from the LED light source relative to one end of the light guide plate close to the LED light source.
Further, the specified distance is 5-10 mm.
Furthermore, a V-shaped groove is formed in the upper surface of the light guide plate; the two sides of the V-shaped groove forming the V-shaped included angle are equal in length.
Further, the light guide plate includes a margin region disposed at a side close to the LED light source.
Further, the length of the margin is 5-7 mm.
Furthermore, the lateral backlight module also comprises a back plate and a middle frame; the reflector plate is fixedly arranged on the back plate; the LED lamp source is fixed on the back plate; the middle frame is fixedly connected with the back plate; a boss is arranged on one side of the middle frame facing the light guide plate; the boss is arranged above one side of the light guide plate close to the LED light source, and a gap is formed between the boss and the light guide plate; the boss is provided with foam at the gap.
Further, the foam is Poron.
Furthermore, the gap between the foam and the light guide plate is 0-0.01 mm.
Furthermore, the lateral backlight module also comprises a membrane, and the membrane is arranged on the upper surface of the light guide plate; the diaphragm is arranged on one side of the foam back to the LED lamp source.
Furthermore, one side of the middle frame facing the light guide plate is provided with an elastic piece; the elastic piece is arranged on one side of the boss, which is far away from the LED lamp source; the middle frame compresses and fixes the membrane on the light guide plate through the elastic piece.
The utility model provides a side-in backlight module, which comprises a light guide plate, a reflector plate and an LED lamp source arranged at the light incident side of the light guide plate; the reflecting sheet is fixedly arranged on the lower surface of the light guide plate; one end of the reflector plate close to the LED light source is arranged at a specified distance in a manner of offsetting towards the direction far away from the LED light source relative to one end of the light guide plate close to the LED light source. The utility model discloses a carry out the design of contracting in with reflector plate relative light guide plate, there is not the reflector plate below one side that the below and the light guide plate in LED lamp source are close to the LED lamp source, and the light that consequently the LED lamp source sent conducts in the past when the light guide plate is main, and the light of up conduction gathers and subtracts to eliminate because of the reflector plate to the highlight reflection in LED lamp source leads to the phenomenon that firefly form lamp shadow appears in the display area.
Drawings
FIG. 1 is a diagram illustrating a firefly phenomenon of a backlight module of a photo-finishing machine in the prior art;
fig. 2 is a schematic structural view of a side-in type backlight module according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a light guide plate according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1, in the existing optical finishing machine, the reflector plate a is disposed below the light guide plate B and randomly placed on the back plate C, and when the reflector plate a extends into the LED light source D, light is upwards conducted to the display area after being reflected, resulting in the occurrence of the firefly-shaped light shadow E in the display area.
The first embodiment is as follows:
fig. 2 is a schematic structural diagram of the lateral backlight module of the present embodiment.
Referring to fig. 2, a side-entry backlight module includes a light guide plate 1, a reflector plate 2, and an LED light source 3 disposed at the light-entering side of the light guide plate 1; the reflecting sheet 2 is fixedly arranged on the lower surface of the light guide plate 1; one end of the reflector plate 2 close to the LED light source 3 is arranged at a specified distance in a direction far away from the LED light source 3 relative to one end of the light guide plate 1 close to the LED light source 3.
In the embodiment, the reflector plate 2 is designed to be retracted relative to the light guide plate 1, and the reflector plate 2 is not arranged below the LED light source 3 and below one side of the light guide plate 1 close to the LED light source 3, so that light emitted by the LED light source 3 is mainly conducted in the prior art when the light enters the light guide plate 1 and is converged and reduced, and the phenomenon that a firefly-shaped lamp shadow appears in a display area due to the fact that the reflector plate 2 reflects the light of the LED light source 3 on the light entering side is eliminated.
In the embodiment, the reflective sheet 2 is set to be retracted 5-10mm inward in a direction away from the LED light source 3 relative to the light guide plate 1. In the backlight module of the finishing machine, the reflecting sheet 2 is designed to reflect light rays below the light guide plate 1, so that the light energy utilization rate is improved. In this embodiment, the reflector plate 2 is designed to be retracted 5-10mm away from the LED light source 3 with respect to the light guide plate 1, so that the situation that a firefly-shaped lamp shadow appears in the display area of the finishing machine due to the fact that the reflector plate 2 reflects light emitted from the LED light source 3 on the light incident side can be prevented, the area coverage rate of the reflector plate 2 on the lower surface of the light guide plate 1 is ensured, and the light energy utilization rate of the backlight module is improved.
Further, referring to fig. 3, the upper surface of the light guide plate 1 is provided with V-shaped grooves 11, and two sides of the V-shaped groove 11 forming a V-shaped included angle are equal in length. The angle a of the V-shaped groove 11 ranges from 30 ° to 60 °, in this embodiment, the angle a is 90 °, and the depth T is 7 μm. This embodiment is through setting up V type groove 11 at the upper surface of light guide plate 1, utilizes the principle of refraction to revise light to make light from the even light-emitting of light guide plate 1's upper surface, the effectual display area luminance of having solved is uneven and the bad phenomenon of lamp shadow. The existing light-guide machine basically adopts a PMMA light guide plate, the upper surface of the light-guide machine is smooth, and the light-guide machine has no correction effect on light basically. The light guide plate 1 of this embodiment adopts the MSV light guide plate, compares current PMMA light guide plate, not only has certain correction effect to light, and its deflection is little simultaneously, further reduces because of the phenomenon that light guide plate 1 takes place to warp at the income light side and produces the glowworm lamp shadow.
Further, referring to fig. 1 and 3, the light guide plate 1 includes a margin 12 disposed at a side close to the LED light source 3. In the present embodiment, the length L of the blank region 12 is 5 to 7mm, which is longer than that of the existing light guide plate. The embodiment increases the length L of the white region 12 on the light guide plate 1, so that light rays can not be excessively refracted in the white region 12, and the generation of firefly-shaped lamp shadows in the display region is further reduced.
Referring to fig. 2, in the present embodiment, the lateral backlight module further includes a back plate 4 and a middle frame 5; the reflector plate 2 is fixedly arranged on the back plate 4; the LED lamp source 3 is fixed on the back plate 4; the middle frame 5 is fixedly connected with the back plate 4; the middle frame 5 is provided with a boss 51 on one side facing the light guide plate 1; the boss 51 is arranged above one side of the light guide plate 1 close to the LED light source 3, and a gap is formed between the boss 51 and the light guide plate 1; the boss 51 is provided with foam 6 at the gap. In the present embodiment, the foam 6 is designed above the light guide plate 1 near the LED light source 3, so that the light reaching the light incident side of the light guide plate 1 is absorbed by the foam 6, thereby preventing the generation of firefly-shaped lamp shadows.
Further, the foam 6 is Poron. The foam 6 is made of low density Poron with specific density of 0.2g/cm3Because the low-density Poron has the characteristics of high buffering performance and high sealing performance, the method can be used for preparing the high-density PoronSo as to avoid the risk of the light guide plate 1 being pressed or worn, and effectively prevent the occurrence of the condition of the glowworm lamp shadow caused by the deformation of the light guide plate 1.
Furthermore, the gap between the foam 6 and the light guide plate 1 is 0-0.01mm, and the foam 6 and the light guide plate 1 are almost sealed, so that light can be prevented from passing through the gap between the foam 6 and the light guide plate 1 to reach the display area to generate a firefly-shaped light shadow.
Referring to fig. 2, in the present embodiment, the side-in type backlight module further includes a film 7, and the film 7 is disposed on the upper surface of the light guide plate 1; the diaphragm 7 is arranged on the side of the foam 6 opposite to the LED lamp source 3. In this embodiment, the optical film 7 with a specific pattern structure is attached to the upper surface of the light guide plate 1, so as to form a backlight that can make the brightness of the display area of the whole finisher uniform, thereby eliminating the defect of non-uniform brightness of the display area and improving the brightness of the display area.
In the present embodiment, the side of the middle frame 5 facing the light guide plate 1 is provided with an elastic member 52; the elastic member 52 is disposed on a side of the boss 51 facing away from the LED light source 3, and the middle frame 5 presses and fixes the membrane 7 on the light guide plate 1 through the elastic member 52. In this embodiment, the elastic member 52 is a buffer tape.
To sum up, the utility model provides a formula backlight module inclines carries out the design that contracts in through 2 relative light guide plates 1 to the reflector plate, simultaneously at the upper surface design V type groove 11 of light guide plate 1, increases the length L that light guide plate 1 income light side left white district 12, and is close to one side design boss 51 and the bubble cotton 6 of light guide plate 1 at center 5, has effectively reduced the phenomenon that produces the glowworm lamp shadow in the quick-witted display area of finishing, has improved the light-emitting quality of formula backlight module inclines into. The utility model discloses simple process easily realizes, need not the incremental cost, and application prospect is extensive.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (9)
1. A side-in backlight module is characterized by comprising a light guide plate, a reflector plate and an LED lamp source arranged on the light incident side of the light guide plate; the reflecting sheet is fixedly arranged on the lower surface of the light guide plate; one end of the reflector plate close to the LED light source is arranged in a manner of deviating a specified distance from one end of the light guide plate close to the LED light source to a direction far away from the LED light source; the upper surface of the light guide plate is provided with a V-shaped groove; the two sides of the V-shaped groove forming the V-shaped included angle are equal in length.
2. The edge-lit backlight module of claim 1, wherein the specified distance is 5-10 mm.
3. The edge-type backlight module of claim 1, wherein the light guide plate comprises a white space disposed at a side close to the LED light source.
4. The lateral backlight module of claim 3, wherein the length of the blank area is 5-7 mm.
5. The edge-type backlight module of claim 1, further comprising a back plate and a middle frame; the reflector plate is fixedly arranged on the back plate; the LED lamp source is fixed on the back plate; the middle frame is fixedly connected with the back plate; a boss is arranged on one side, facing the light guide plate, of the middle frame; the boss is arranged above one side of the light guide plate close to the LED light source, and a gap is formed between the boss and the light guide plate; the boss is in the clearance department pastes and is equipped with the bubble cotton.
6. The edge-lit backlight module of claim 5, wherein the foam is Poron.
7. The edge-type backlight module of claim 5, wherein the gap between the foam and the light guide plate is 0-0.01 mm.
8. The edge-type backlight module of claim 5, further comprising a film disposed on an upper surface of the light guide plate; the diaphragm is arranged on one side of the foam back to the LED lamp source.
9. The edge-type backlight module of claim 8, wherein an elastic member is disposed on a side of the middle frame facing the light guide plate; the elastic piece is arranged on one side of the boss, which is far away from the LED lamp source; the middle frame compresses and fixes the membrane on the light guide plate through the elastic piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291785.6U CN213930500U (en) | 2020-10-14 | 2020-10-14 | Side-in type backlight module |
| PCT/CN2020/139921 WO2022077768A1 (en) | 2020-10-14 | 2020-12-28 | Side entry type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022291785.6U CN213930500U (en) | 2020-10-14 | 2020-10-14 | Side-in type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213930500U true CN213930500U (en) | 2021-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022291785.6U Active CN213930500U (en) | 2020-10-14 | 2020-10-14 | Side-in type backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN213930500U (en) |
| WO (1) | WO2022077768A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118151436A (en) * | 2024-05-10 | 2024-06-07 | 惠科股份有限公司 | Backlight module and display device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101808518B1 (en) * | 2010-09-10 | 2017-12-14 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device using the same |
| TWI452392B (en) * | 2011-05-26 | 2014-09-11 | Au Optronics Corp | Backlight module |
| CN202204952U (en) * | 2011-09-19 | 2012-04-25 | 苏州向隆塑胶有限公司 | Light guide plate and light source device |
| CN103939799B (en) * | 2014-03-31 | 2015-11-25 | 京东方科技集团股份有限公司 | A kind of backlight module and liquid crystal indicator |
| CN204141397U (en) * | 2014-09-30 | 2015-02-04 | 南京中电熊猫液晶显示科技有限公司 | Backlight module |
| CN106352272B (en) * | 2016-08-22 | 2019-09-17 | 深圳市华星光电技术有限公司 | A kind of side entrance back module and display device improving taste |
| CN206301121U (en) * | 2017-01-03 | 2017-07-04 | 合肥京东方光电科技有限公司 | Backlight module and display device |
-
2020
- 2020-10-14 CN CN202022291785.6U patent/CN213930500U/en active Active
- 2020-12-28 WO PCT/CN2020/139921 patent/WO2022077768A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118151436A (en) * | 2024-05-10 | 2024-06-07 | 惠科股份有限公司 | Backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022077768A1 (en) | 2022-04-21 |
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