CN109375415A - A kind of backlight module of narrow frame display screen - Google Patents
A kind of backlight module of narrow frame display screen Download PDFInfo
- Publication number
- CN109375415A CN109375415A CN201811237671.4A CN201811237671A CN109375415A CN 109375415 A CN109375415 A CN 109375415A CN 201811237671 A CN201811237671 A CN 201811237671A CN 109375415 A CN109375415 A CN 109375415A
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- CN
- China
- Prior art keywords
- light
- glue frame
- backlight module
- emitting window
- light source
- 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.)
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Classifications
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- 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
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Abstract
The present invention provides a kind of backlight modules, the backlight module is provided with light inlet and light-emitting window on side of the glue frame towards light source, wherein, light inlet is set to glue frame towards the side of the light source, light-emitting window is respectively arranged at the top of glue frame, light inlet is connected to the light-emitting window, particularly, the height of light inlet and the width of light-emitting window are the half of face plate edge shadow sector width, the position of the light inlet is also related with the position of the nearest LED point light source, this design can guarantee that the light of light source passes sequentially through light inlet, light-emitting window is reflected into face plate edge shadow area, with this improve narrow frame screen can blanking bar existing for operating space edge.
Description
Technical field
The present invention relates to field of display technology more particularly to the constructions of display screen, and in particular to a kind of backlight module.
Background technique
At present in the field of display, the superiority and inferiority degree of backlight module quality determines the quality of display screen display effect.?
Many large size occasions can all use mosaic screen to show picture and meet the needs of more numbers viewing, still, due to mosaic screen
Mainstream piece (can be operated area to frame distance) it is too narrow, only 3.5 millimeters, will lead to panel can operating space surrounding
Edge becomes blanking bar because light can not reach, to reduce the image quality of screen, as shown in Figure 1 and Figure 2.
In conclusion in the prior art narrow frame screen can operating space edge there are problems that blanking bar so that shadow
The image quality of screen is rung, therefore, the prior art has improved space.
Summary of the invention
Originally it to solve the above problems, technical solution of the present invention provides a kind of backlight module, includes at least:
Glue frame, the backboard for being set to the glue frame bottom, the diffuser plate being set at the top of the glue frame and distribution setting
Light source between the backboard and the diffuser plate；
The diffuser plate includes bright face region, and positioned at the bonding region of the bright face edges of regions, the diffuser plate
Bonding region be adhesively fixed with the glue frame surface；
In the backlight module of the application, the side of the glue frame towards the light source offers light inlet, the glue frame
Top offers light-emitting window, and the light inlet is connected to the light-emitting window, to realize the light of the light source through the glue frame inner wall
The bonding region is reflexed to, to promote the brightness of the bonding region.
In the backlight module of the application, the height of the light inlet is the half of the bonding region width, institute
The width for stating light-emitting window is the half of the bonding region width.
In the backlight module of the application, the place face of the light inlet is mutually perpendicular to face where the light source, described
The vertical range in face is first distance where light inlet and the light source, between the light source and the place face of the light inlet
Vertical range is second distance, and the ratio of the first distance and the second distance is tan (30 ° ± 5 °).
In the backlight module of the application, the light-emitting window is set at the top of the glue frame and the non-contacting any bit of diffuser plate
It sets.
In the backlight module of the application, the length of the light inlet and the light-emitting window is respectively less than the corresponding glue frame
Side length.
In the backlight module of the application, the glue frame is hollow frame, and diffusing reflection face is equipped with inside the glue frame.
In the backlight module of the application, the glue frame is solid framework, and optical channel, the light are provided in the glue frame
The one end in channel is the light inlet, and the opposite other end of the optical channel is the light-emitting window.
In the backlight module of the application, the setting of optical channel described in the solid framework is known as one section of beeline channel, institute
The angle stated at the top of beeline channel and the glue frame towards that side of the light source is acute angle.
In the backlight module of the application, the optical channel includes at least both ends section beeline channel, the first segment straight line
Channel connects the light-emitting window, and the first segment beeline channel is vertical at the top of the glue frame.
In the backlight module of the application, the optical channel includes at least one section of curved channel.
Technical solution of the present invention can produce following effect:
A kind of backlight module provided by the invention, compared to the prior art, difference is this backlight module: the backlight
The side of the glue frame of mould group towards light source offers light inlet, offers light-emitting window, and the light inlet and institute at the top of glue frame
State light-emitting window connection, wherein the height of the light inlet is the half of the bonding region width, the width of the light-emitting window
Degree is the half of the bonding region width, and the position of the light inlet also requires, and may finally realize light source
Light pass sequentially through light inlet, light-emitting window face plate edge shadow area be reflected into this, thus to improve the dark of narrow frame
The brightness of zone and the width for reducing penumbra area, to bring better viewing experience to user.
Detailed description of the invention
Below by attached drawing, invention is further explained.It should be noted that the accompanying drawings in the following description is only
Explanation some embodiments of the present invention are only for not make the creative labor for those skilled in the art
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic cross-section of the structure of down straight aphototropism mode set in the prior art.
Fig. 2 is the effect diagram of penumbra area in down straight aphototropism mode set in the prior art.
Fig. 3 is the schematic cross-section of the structure for the down straight aphototropism mode set that an embodiment of the present invention provides.
Fig. 4 is the schematic cross-section of the structure for the down straight aphototropism mode set that another embodiment of the present invention provides.
Fig. 5 is the effect diagram of penumbra area in down straight aphototropism mode set provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "inner", "outside", " surface ", " vertical " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, wherein "upper", "lower" are surface in object
Above body, refer specifically to be ok for surface, oblique upper, upper surface, as long as occuping on object level, and " surface "
It is to refer to two objects mutually directly to contact, the above orientation or positional relationship is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
It should be noted that term " thickness ", " width ", " length " are all neutral words, do not indicate to be biased to it is thick or thin, wide or
Narrow, only indicating object with " default " word herein, there are the thickness of certain distance, width or length, and numerical value is uncertain, still
Depending on meeting according to the actual situation.In addition, " H ", " P ", " D " these letters are respectively referred to for some numerical value, since current can not
Intellectual can only be first indicated with letter herein, it is therefore intended that indicate that the numerical value between object correlation or position, distance close
System.
In addition, it should also be noted that, attached drawing offer is only and Relationship Comparison of the present invention close structure and/or step
Suddenly, some and little details of inventive relationship is omitted, it is therefore intended that simplify attached drawing, keeps inventive point very clear, rather than table
Bright device in practice and/or method are exactly and attached drawing is the same, not as the limitation of device in practice and/or method.
Such as Fig. 1, the schematic cross-section of the structure of down straight aphototropism mode set in the prior art is indicated, according to Fig. 1, we can be with
It was found that the light that the light source 104 in 103 backboard (not shown) of glue frame issues is since the blocking of 103 side of glue frame causes light
Line is all reflected into diffuser plate 102 and the non-contacting middle section of glue frame, i.e. the light of light source 106 is finally all equably reflected into face
Plate 101, and it is be bonded with glue frame 103 in the surrounding of diffuser plate 102 partially due to light can not reflect back, finally in panel
There is the obscuration band 105 of one fixed width in 101 surrounding, concrete condition can with reference to it is as shown in Figure 2 it is straight in the prior art under
The effect diagram of penumbra area in formula backlight module, wherein edge light color indicates that brightness is relatively low, it can be observed that in the prior art
Width is larger and light is less for obscuration band 105 (i.e. the edge light areas of Fig. 2).
Such as Fig. 3, the schematic cross-section of the structure for the down straight aphototropism mode set that an embodiment of the present invention provides is indicated, this back
Optical mode group has included at least glue frame 303, the backboard (not shown) for being set to 303 bottom of glue frame, has been set to the glue frame 303
The diffuser plate 302 at top and distribution are set to the light source 304 between the backboard and the diffuser plate, on diffuser plate 302
Side is equipped with panel 301, and the 301 surrounding length of panel has been more than 302 surrounding length of diffuser plate.
Wherein, defining the diffuser plate 302 region Nian Jie with 303 top surface of glue frame is bonding region, definition
Described other regions of diffuser plate 302 are bright face region.
As shown in figure 3, the glue frame 303 in figure is a hollow framework, each side of the glue frame 303 has centainly
Thickness, the present embodiment offers light inlet compared with prior art, in the side of glue frame 303 towards the light source
307, the glue frame top offers light-emitting window 306, and wherein each light inlet 307 and light-emitting window 306 are one-to-one.
Wherein, for any obscuration band 305 (bonding region), it is assumed that the 305 (adhesion zone of obscuration band
Domain) width be D, then should set the height of the light inlet 307 to the two of obscuration band 305 (bonding region) width
/ mono-, the width of the light-emitting window 306 is the half of obscuration band 305 (bonding region) width.If described herein
The height of light inlet 307 and the big edge brightness that will cause of width ratio D/2 of light-emitting window 306 are excessively high, smaller than D/2 to can solve darkness
It is ineffective, so setting D/2 for the width of the height of light inlet 307 and light-emitting window 306 herein is preferably to select, this
The completely opaque area's (0%) of the script of the obscuration band 307 is at least become slightly light filling (+20%) by the size design of sample, real
Border improvement can be much larger than 20%.
Particularly, there is following regulation in position of the light inlet 307 in the glue frame 303:
The glue frame 303 has several vertical surfaces, and light inlet 307 is both provided in any vertical surface, described
The place face of light inlet 307 is mutually perpendicular to the 304 place face of light source.For a certain light inlet 307, it is assumed that all
Light source 304 in, and the place face vertical range of the light inlet 307 is shortest is defined as P, and the light inlet 307 with
The vertical range in the 304 place face of light source is defined as H, then above-mentioned H, P should meet H/P=tan (30 ° ± 5 °).
Similarly, for this backlight module, the position of each light inlet 307 corresponding described H, P should
In accordance with above-mentioned regulation.
In addition, the light-emitting window 306 be set to 303 top of the glue frame the diffuser plate 302 and the glue frame 303 it is non-
Any position of contact, due to the width difference very little of the panel 301 and 302 edge of diffuser plate in practice, only 3.5 millis
Rice or so, so above-mentioned light-emitting window 306 need not be particular about at a distance from the diffuser plate 302.
It is to be appreciated that in order to enable the light of the light source 306 to sequentially pass through the light inlet 307 and light-emitting window
306 are reflected into the obscuration band 305 (bonding region), therefore the thickness of the light inlet 307 and light-emitting window 306 should be to pass through it
On the basis of the sidewall thickness of corresponding glue frame 303.
It should be noted that Fig. 3 is only cutting for the structure for the down straight aphototropism mode set that an embodiment of the present invention provides
Face schematic diagram, the light inlet 307 and light-emitting window 306 have certain length, the light inlet 307 and light-emitting window in practice
306 length has to be larger than the length of obscuration band 305 (bonding region) corresponding equal to its, to guarantee that whole darkness can be improved
The brightness of band 305 (bonding region) length；Also, the length of the light inlet 307 and light-emitting window 306 is respectively less than corresponding described
The length of the side of glue frame 303, otherwise the side frame of the glue frame 303 is just isolated by the light inlet 307 and light-emitting window 306 and becomes
Multiple unitary parts can not constitute normal glue frame 303 to realize the functions such as the reflection of normal glue frame 303, this is should to be managed
Solution.
As described above, in the fig. 3 embodiment, the light that issues of the light source 304 on 303 backboard of the glue frame is most of all
Directly it is mapped to diffuser plate 302 or diffuser plate 302 is reflected by the inner surface of glue frame 303, some described nearest LED point
The light of light source 304 then passes sequentially through the light inlet 307 and light-emitting window 306 is reflected into the 301 edge darkness area of panel
305, i.e., the light part in the high place of luminous intensity is transferred to the weak region of luminous intensity, improves the image quality of panel obscuration band 305.Tool
The improvement situation of the light of the obscuration band 305 of body can refer to Fig. 5, and in Fig. 5, grayscale is deepened, and indicate that brightness improves, i.e. light
Intensity becomes larger, so that the image quality of final screen surrounding is improved.
Such as Fig. 4, the schematic cross-section of the structure for the down straight aphototropism mode set that another embodiment of the present invention provides is indicated, this
For backlight module compared with the backlight module in Fig. 3, the glue frame 403 for distinguishing the backlight module being in Fig. 4 is solid framework, is connect down
To introduce the difference of the embodiment of Fig. 4 and the embodiment of Fig. 3.
In Fig. 4, defining the diffuser plate 402 region Nian Jie with 403 top surface of glue frame is bonding region, fixed
Described other regions of diffuser plate 402 of justice are bright face region.
Wherein, the backlight module is also to be provided with light inlet 407 and light-emitting window 406 in the glue frame 403, by institute
It is solid for stating glue frame 403, therefore is internally provided with optical channel in the glue frame 403, and one end of the optical channel enters light for described in
Mouth 407, the opposite other end of the optical channel are the light-emitting window 406.
Wherein, the size and location of the light inlet 407 and light-emitting window 406 are arranged in embodiment corresponding with Fig. 3
It provides identical.
Optical channel in Fig. 4 is set as two sections of beeline channels, and the first segment beeline channel connects the light-emitting window 406,
The first segment beeline channel is vertical with 403 top of glue frame, and the second segment straight line connects the light inlet 407.
As described above, the light of the light source 404 successively excessively described light inlet 407, light-emitting window 406, the light is in the light
Vias inner walls pass through multiple reflections, are finally reflected at the obscuration band 405 (bonding region) of panel 401.
It is solid situation for glue frame, other than the embodiment that Fig. 4 is stated, the optical channel be may be set to be
One section of beeline channel, wherein the angle at the top of the beeline channel and the glue frame towards that side of the light source is acute angle；
The optical channel may be set to be the channel of one section or multistage curved channel or straight line and curve blending collocation.
It is to be understood that shape and path regardless of the optical channel, principle is all to utilize the multiple anti-of light
It penetrates, some light of the light source 404 is transferred to the obscuration band 405 (bonding region) on panel 401, narrow side is improved with this
Frame screen can blanking bar existing for operating space edge.
It is as shown in Figure 5 using effect picture caused by several embodiments as described above when glue frame is solid.
The back light module unit structure and positional relationship for being provided for the embodiments of the invention a kind of narrow frame above carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand technical solution of the present invention and its core concept；Those skilled in the art should manage
Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement；And these are modified or replaceed, the skill for various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
The range of art scheme.
Claims (10)
1. a kind of backlight module, which is characterized in that include at least:
Glue frame, the backboard for being set to the glue frame bottom, the diffuser plate being set at the top of the glue frame and distribution are set to institute
State the light source between backboard and the diffuser plate；
The diffuser plate includes bright face region, and positioned at the bonding region of the bright face edges of regions, the diffuser plate glues
Region is connect to be adhesively fixed with the glue frame surface；
Wherein, the side of the glue frame towards the light source offers light inlet, offers light-emitting window at the top of the glue frame, described
Light inlet is connected to the light-emitting window, to realize that the light of the light source reflexes to the bonding region through the glue frame inner wall, with
Promote the brightness of the bonding region.
2. backlight module as described in claim 1, it is characterised in that: the height of the light inlet is the bonding region width
Half, the width of the light-emitting window is the half of the bonding region width.
3. backlight module as described in claim 1, it is characterised in that: face where the place face of the light inlet and the light source
It is mutually perpendicular to, the vertical range in face is first distance, the light source and the light inlet where the light inlet and the light source
Place face between vertical range be second distance, the ratio of the first distance and the second distance be tan (30 ° ±
5°)。
4. backlight module as described in claim 1, it is characterised in that: the light-emitting window is set at the top of the glue frame and diffuser plate
Non-contacting any position.
5. backlight module as described in claim 1, it is characterised in that: the length of the light inlet and the light-emitting window is respectively less than
The length of the side of the corresponding glue frame.
6. the backlight module as described in Claims 1 to 5 is any, it is characterised in that: the glue frame is hollow frame, the glue frame
Inside is equipped with diffusing reflection face.
7. the backlight module as described in Claims 1 to 5 is any, it is characterised in that: the glue frame is solid framework, the glue frame
It is inside provided with optical channel, one end of the optical channel is the light inlet, and the opposite other end of the optical channel is the light out
Mouthful.
8. backlight module as claimed in claim 7, it is characterised in that: the optical channel is set as one section of beeline channel, described
Angle at the top of beeline channel and the glue frame towards that side of the light source is acute angle.
9. backlight module as claimed in claim 7, it is characterised in that: the optical channel includes at least two sections of beeline channels, institute
It states first segment beeline channel and connects the light-emitting window, the first segment beeline channel is vertical at the top of the glue frame.
10. backlight module as claimed in claim 7, it is characterised in that: the optical channel includes at least one section of curved channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237671.4A CN109375415B (en) | 2018-10-23 | 2018-10-23 | Backlight module of narrow-frame display screen |
| PCT/CN2019/071687 WO2020082622A1 (en) | 2018-10-23 | 2019-01-15 | Backlight module for narrow-bezel display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237671.4A CN109375415B (en) | 2018-10-23 | 2018-10-23 | Backlight module of narrow-frame display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109375415A true CN109375415A (en) | 2019-02-22 |
| CN109375415B CN109375415B (en) | 2020-03-24 |
Family
ID=65400795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811237671.4A Active CN109375415B (en) | 2018-10-23 | 2018-10-23 | Backlight module of narrow-frame display screen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109375415B (en) |
| WO (1) | WO2020082622A1 (en) |
Cited By (6)
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| CN111948804A (en) * | 2019-05-16 | 2020-11-17 | 船井电机株式会社 | Optical scanning unit and optical apparatus |
| CN112558355A (en) * | 2020-12-17 | 2021-03-26 | 业成科技（成都）有限公司 | Backlight module and display panel |
| CN112802393A (en) * | 2020-08-13 | 2021-05-14 | 友达光电股份有限公司 | Backlight module |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN113534521A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame and display module |
| CN114137758A (en) * | 2020-09-03 | 2022-03-04 | 海信视像科技股份有限公司 | Display device |
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| CN112802393A (en) * | 2020-08-13 | 2021-05-14 | 友达光电股份有限公司 | Backlight module |
| CN114137758A (en) * | 2020-09-03 | 2022-03-04 | 海信视像科技股份有限公司 | Display device |
| CN112558355A (en) * | 2020-12-17 | 2021-03-26 | 业成科技（成都）有限公司 | Backlight module and display panel |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN113534521A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame and display module |
| CN113543560B (en) * | 2021-08-02 | 2024-02-02 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020082622A1 (en) | 2020-04-30 |
| CN109375415B (en) | 2020-03-24 |
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