CN106287577A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN106287577A CN106287577A CN201510354404.5A CN201510354404A CN106287577A CN 106287577 A CN106287577 A CN 106287577A CN 201510354404 A CN201510354404 A CN 201510354404A CN 106287577 A CN106287577 A CN 106287577A
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- China
- Prior art keywords
- angle
- inclination
- guide plate
- incidence surface
- light guide
- 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
-
- 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
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
-
- 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
- G02F1/133603—Direct backlight with LEDs
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The open a kind of backlight module of the present invention and display device.Backlight module includes light guide plate, supporting body and luminescence unit.Light guide plate has at least one incidence surface and the exiting surface being connected with incidence surface.Supporting body is adjacent to light guide plate, and has the face of setting.Luminescence unit is arranged at the face of setting, and emits beam and be incident to light guide plate by incidence surface, and is penetrated by exiting surface；Wherein, incidence surface forms the first angle of inclination with the direction of vertical exiting surface, and the face that arranges forms the second angle of inclination with described direction, and the first angle of inclination is substantially the same with the second angle of inclination.
Description
Technical field
The present invention relates to a kind of backlight module and display device.
Background technology
Owing to the liquid crystal of display panels itself will not be luminous, in order to reach display effect, it is necessary to provide
Enough light briliancy and the area source (i.e. backlight module) that is evenly distributed are to display panels, with display
Required picture.Further, since light emitting diode (Light Emitting Diode, LED) is at technique and material
Continuous improvement in terms of material so that the luminous efficiency of light emitting diode is substantially improved.It is different from general day
Light modulation or Electricity-saving lamp bulb, it is high, luminous that light emitting diode has low power consumption, length in service life, safety
The characteristic such as response time is short and volume is little, is the most little by little applied in the backlight module of display device.
Refer to shown in Fig. 1, it is the schematic diagram of known a kind of display device 1.
Display device 1 comprises display floater 11 and backlight module 12, backlight module 12 and display floater
11 relatively set, and can emit beam and be incident to display floater 11, make display floater 11 capable of displaying image.
Wherein, backlight module 12 includes LED light source 121, light guide plate 122 and at least one blooming piece 123.
LED light source 121 can emit beam and be incident to light guide plate 122, and the effect of light guide plate 122 is to guide
The transmission direction of light, and by light in the total reflection within light guide plate 122, make light by light guide plate
The exiting surface O injection of 122, to form uniform area source.It addition, blooming piece 123 (is aobvious at this
As a example by showing 4 blooming pieces) can such as comprise diffusion sheet, and may be disposed at the exiting surface O of light guide plate 122,
So that the light of injection light guide plate 122 can form area source evenly by after diffusion sheet.
It addition, in order to improve product competitiveness, the liquid crystal indicator of high display quality always industry is held
One of continuous target pursued.But, in known technology, as it is shown in figure 1, light is to light guide plate
When 122, light guide plate 122 and the adjacent region (the region A of Fig. 1) of LED light source 121, often can occur
The phenomenon of light leak, makes display floater 11 produce hot spot phenomenon (being commonly called as bright spot), causes display quality not
Good and make the competitiveness of product decline.
Therefore, how to provide a kind of backlight module and display device, can improve light leak and bright spot generation and
One of important topic of the competitiveness of improving product, always industry.
Summary of the invention
Because above-mentioned problem, the present invention provides a kind of phenomenon improving light leak and bright spot, to improve product
The backlight module of the competitiveness of product and display device.
For reaching above-mentioned purpose, according to a kind of backlight module of the present invention, including light guide plate, supporting body and
Luminescence unit.Light guide plate has at least one incidence surface and the exiting surface being connected with incidence surface.Supporting body is adjacent
It is located at light guide plate, and there is the face of setting.Luminescence unit is arranged at the face of setting, and emits beam by incidence surface
It is incident to light guide plate, and is penetrated by exiting surface；Wherein, the direction of incidence surface and vertical exiting surface forms the
One angle of inclination, the face that arranges forms the second angle of inclination with described direction, inclines with second in the first angle of inclination
Rake angle is substantially the same.
For reaching above-mentioned purpose, according to a kind of display device of the present invention, including display floater and backlight mould
Block.Backlight module is relative with display floater and sets, and comprises light guide plate, supporting body and luminescence unit,
Light guide plate has at least one incidence surface and the exiting surface being connected with incidence surface, and supporting body is adjacent to light guide plate,
And there is the face of setting, luminescence unit is arranged at the face of setting, and emits beam and be incident to light guide plate by incidence surface,
And penetrated by exiting surface；Wherein, incidence surface forms the first angle of inclination with the direction of vertical exiting surface, if
Face of putting forms the second angle of inclination, the first angle of inclination and the second angle of inclination substantially phase with described direction
With.
In an embodiment, the first angle of inclination or the second angle of inclination are between 2 degree to 30 degree.
In an embodiment, luminescence unit has substrate and at least one luminescent device, and substrate attaching is in setting
Face, and luminescent device is arranged at substrate, and relative with incidence surface and set.
In an embodiment, backlight module farther includes at least one blooming piece, and it is arranged at exiting surface,
And there is kink, kink is correspondingly arranged with incidence surface.
In an embodiment, supporting body is glue frame, and glue frame has more loading end, and display floater is arranged on and holds
On section.
In an embodiment, substrate is flexible substrate, rigid substrate or Rigid Flex.
From the above, because the backlight module of the present invention is with display device, light guide plate has at least one and enters
Bright finish and the exiting surface being connected with incidence surface, and supporting body is adjacent to light guide plate, and there is the face of setting, and
Luminescence unit is arranged at the face of setting, and emits beam and be incident to light guide plate by incidence surface and penetrated by exiting surface.
It addition, the first angle of inclination of being formed with the direction of vertical exiting surface of the incidence surface of light guide plate and supporting body
The second angle of inclination of being formed of the face that arranges and described direction be substantially the same.Thus so that luminous single
When the light that unit is sent is incident to light guide plate by incidence surface, light area can be added to, that is increase is injected
The light of light guide plate enter light quantity, use and reduce the generation of display device light leak and bright spot and improve product
The competitiveness of product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of known a kind of display device.
Fig. 2 is the schematic diagram of a kind of display device of the preferred embodiment of the present invention.
Detailed description of the invention
Hereinafter with reference to relevant drawings, the backlight module according to the preferred embodiment of the present invention and display dress are described
Putting, the most identical device will be illustrated with identical reference.
Refer to shown in Fig. 2, wherein, Fig. 2 is a kind of display device 2 of the preferred embodiment of the present invention
Schematic diagram.Show first direction X (horizontal direction), second direction Y and third party in the present embodiment
To Z (vertical direction), first direction X, second direction Y and third direction Z are the most vertical
Directly.Wherein, first direction X can be substantial parallel with the bearing of trend of the scan line of display device 2, the
Two direction Y can be substantial parallel with the bearing of trend of data wire, and third direction Z can be respectively vertical
One direction X and the other direction of second direction Y.
Display device 2 is liquid crystal indicator, and includes display floater 21 and backlight module 22.Backlight
Module 22 is relative with display floater 21 and sets, and can emit beam and be incident to display floater 21, makes display
Panel 21 is capable of displaying image.
Display floater 21 includes first substrate the 211, second substrate 212 and liquid crystal layer (figure does not shows).Liquid
Crystal layer is interposed between the first substrate 211 and the second substrate 212.Wherein, the first substrate 211 and second
Substrate 212 can be made up of light-transmitting materials, and for example, glass substrate, quartz substrate or plastic, right
This does not limit.In the present embodiment, the first substrate 211 is with thin film transistor substrate, and the second substrate
212 is as a example by colorized optical filtering substrate.But, in other embodiments, on colorized optical filtering substrate
Black-matrix layer (black matrix) and filter layer also can be respectively provided with on a thin film transistor substrate, make
Obtain the first substrate 211 and become BOA (BM on array) substrate, or become COA (color filter on
Array) substrate, does not limit this.
The display floater 21 of the present embodiment can comprise two Polarizers 213,214, Polarizer 213 further
(lower Polarizer) is arranged on first substrate 211 side away from the second substrate 212, and Polarizer 214
(upper Polarizer) is arranged on second substrate 212 side away from the first substrate 211.Here, Polarizer
213 downside surfaces being fitted in the first substrate 211, and Polarizer 214 is fitted in the upper of the second substrate 212
Side surface.Wherein, substantially differed the Polarizer 213,214 of 90 degree by two panels polarizing axis, i.e. up to
To the function covered by backlight, recycling controls the power of electric field can produce deflection with modulation light to liquid crystal
The characteristic of line, reaches to allow display floater 21 show image.
It addition, backlight module 22 comprises light guide plate 221, supporting body 222 and luminescence unit 223.This
The backlight module 22 of embodiment comprises at least one blooming piece and reflection device 228 further.
Light guide plate 221 has at least one incidence surface I and the exiting surface O being connected with incidence surface I.Wherein,
The effect of light guide plate 221 is the transmission direction of direct light line, and by light inside light guide plate 221
Total reflection, make light by light guide plate 221 exiting surface O penetrate, to form uniform area source.Lead
Tabula rasa 221 is made up of light transmissive material, and light transmissive material can be such as acrylic resin, Merlon, gather
Vinyl or glass, be not any limitation as this.It addition, the section shape of light guide plate 221 can be such as
For tabular or wedge shape.Here, with flat light guide plate 221, and as a example by extending toward first direction X.
Supporting body 222 is adjacent to light guide plate 221, and has the face of setting 2221.Here, supporting body 222
For glue frame, and supporting body 222 (glue frame) is in addition to having the face of setting 2221, also has loading end 2222,
Display floater 21 is made to may be provided on loading end 2222, to carry display floater by supporting body 222
21 and relative with backlight module 22 and set.
Luminescence unit 223 is arranged at the face that arranges 2221 of supporting body 222, and can emit beam by light guide plate
The incidence surface I of 221 is incident to light guide plate 221, and is penetrated by its exiting surface O.Wherein, luminescence unit 223
Having at least one luminescent device 2231 and substrate 2232, substrate 2232 is fitted in by adhesion layer H and sets
Put on face 2221, and luminescent device 2231 is arranged on substrate 2232, and relative with incidence surface I and set
(both can contact or do not contact).Substrate 2232 can be flexible substrate, rigid substrate or Rigid Flex,
Do not limit.The luminescent device 2231 of the present embodiment is light emitting diode, and such as but not limited to surface
Mount technology (Surface Mount Technology, SMT) is arranged on substrate 2232.It addition, this reality
The luminescence unit 223 executing example is the LED optical strip (lightbar) with multiple light emitting diode
As a example by, and it is arranged on the side of light guide plate 221.But, in various embodiments, it is possible at leaded light
The side relative for incidence surface I of plate 221 separately arranges luminescence unit (figure does not shows), so that two luminous single
Unit can be injected light to light guide plate 221 by the incidence surface I of opposite sides respectively, and this is not limited by the present invention.
It addition, the direction of the incidence surface I of light guide plate 221 and vertical exiting surface O (i.e. third direction Z)
Between form the first tilt angle theta 1 (acute angle), and the face that arranges 2221 of supporting body 222 and described direction
Also form the second tilt angle theta 2 (acute angle) between (third direction Z), and the first tilt angle theta 1 with
Second tilt angle theta 2 is substantially the same.Wherein, the first tilt angle theta 1 or the second tilt angle theta 2 can
Between 2 degree to 30 degree (2 ° of θ 1 30 °, 2 ° θ 2 30 °).Here, with the first angle of inclination
As a example by θ 1 and the second tilt angle theta 2 are 20 degree.It addition, substrate 2232 and described direction (third direction
Z) the 3rd angle of inclination (sign), the 3rd angle of inclination and the second tilt angle theta 2 can also be formed between
(or first tilt angle theta 1) is the most equal.
The backlight module 22 of the present embodiment the most sequentially have 4 blooming pieces 224,225,226,
As a example by 227.Blooming piece 224,225,226,227 such as can be respectively diffusion sheet, prismatic lens, increasing
Bright film or a combination thereof, be not any limitation as this, thus makes the light of injection exiting surface O through blooming
Uniform area source can be formed during sheet 224,225,226,227.Wherein, blooming piece 224 is arranged at
Exiting surface O, and there is kink T, and kink T is correspondingly arranged with incidence surface I.Here, blooming
The kink T of sheet 224 is near luminescence unit 223 so that blooming piece 224 can cover luminescent device 2231
Part surface.
Reflection device 228 is arranged at the bottom surface B (another surface relative with exiting surface O) of light guide plate 221,
And can reflex to the light being incident upon bottom surface B again the inside of light guide plate 221, thus improve the utilization of light
Rate.Wherein, reflection device 228 can be reflecting layer (for example, coat of metal) or reflector plate, here,
As a example by reflector plate, and its thickness is less than the thickness of light guide plate 221.It addition, reflection device 228 can have
There is the reflecting material of high reflectance, and reflecting material such as can comprise metal, metal-oxide, high reflection
Paint (white paint) or a combination thereof.
Additionally, display device 2 farther includes backboard 23, and display floater 21 sets with backlight module 22
Put in backboard 23.Wherein, backboard 23 is in order to accommodating display floater 21 and backlight module 22, and provides
The protections such as collision, electromagnetic wave or electric shock.The material of backboard 23 can select plastics, metal or alloy etc.,
It is not any limitation as.
Hold, in the display device 2 of the present embodiment, due to the entering of light guide plate 221 of backlight module 21
Bright finish I is inclined-plane, and the face that arranges 2221 of supporting body 222 substantially parallel with incidence surface I (i.e.
One tilt angle theta 1 and the second tilt angle theta 2 are substantially the same) so that luminescence unit 223 is sent
When light is incident to light guide plate 221 by incidence surface I, light area can be added to, that is increase luminescence unit
223 light injecting light guide plate 221 enter light quantity, use and reduce display device 2 light leak and bright spot
Occur.
In sum, because the backlight module of the present invention is with display device, light guide plate has at least one and enters
Bright finish and the exiting surface being connected with incidence surface, and supporting body is adjacent to light guide plate, and there is the face of setting, and
Luminescence unit is arranged at the face of setting, and emits beam and be incident to light guide plate by incidence surface and penetrated by exiting surface.
It addition, the first angle of inclination of being formed with the direction of vertical exiting surface of the incidence surface of light guide plate and supporting body
The second angle of inclination of being formed of the face that arranges and described direction be substantially the same.Thus so that luminous single
When the light that unit is sent is incident to light guide plate by incidence surface, light area can be added to, that is increase is injected
The light of light guide plate enter light quantity, use and reduce the generation of display device light leak and bright spot and improve product
The competitiveness of product.
The foregoing is only illustrative, rather than be restricted.It is any without departing from spirit and scope of the invention,
And the equivalent modifications that it is carried out or change, should be included in appended claims.
Claims (10)
1. a backlight module, including:
Light guide plate, has at least one incidence surface and the exiting surface being connected with described incidence surface；
Supporting body, is adjacent to described light guide plate, and has the face of setting；And
Luminescence unit, is arranged at the described face that arranges, and emits beam and be incident to described leaded light by described incidence surface
Plate, and penetrated by described exiting surface；
Wherein, described incidence surface forms the first angle of inclination, described setting with the direction of vertical described exiting surface
Face and described direction form the second angle of inclination, described first angle of inclination and described second angle of inclination essence
Upper identical.
Backlight module the most according to claim 1, inclines in wherein said first angle of inclination or described second
Rake angle is between 2 degree to 30 degree.
Backlight module the most according to claim 1, wherein said luminescence unit has substrate and at least
Individual luminescent device, described substrate attaching is in the described face that arranges, and described luminescent device is arranged at described substrate,
And it is relative with described incidence surface and set.
Backlight module the most according to claim 1, farther includes:
At least one blooming piece, is arranged at described exiting surface, and has kink, described kink and institute
State incidence surface to be correspondingly arranged.
5. a display device, including:
Display floater；And
Backlight module, relative with described display floater and set, and comprise light guide plate, supporting body and luminous single
Unit, described light guide plate has at least one incidence surface and the exiting surface being connected with described incidence surface, described carrying
Body is adjacent to described light guide plate, and has the face of setting, and described luminescence unit is arranged at and described arranges face, concurrently
Go out light and be incident to described light guide plate by described incidence surface, and penetrated by described exiting surface；
Wherein, described incidence surface forms the first angle of inclination, described setting with the direction of vertical described exiting surface
Face and described direction form the second angle of inclination, described first angle of inclination and described second angle of inclination essence
Upper identical.
Display device the most according to claim 5, wherein said supporting body is glue frame, and described glue frame
Also having loading end, described display floater is arranged on described loading end.
Display device the most according to claim 5, inclines in wherein said first angle of inclination or described second
Rake angle is between 2 degree to 30 degree.
Display device the most according to claim 5, wherein said luminescence unit has substrate and at least
Individual luminescent device, described substrate attaching is in the described face that arranges, and described luminescent device is arranged at described substrate,
And it is relative with described incidence surface and set.
Display device the most according to claim 8, wherein said substrate is flexible substrate, rigid substrate
Or Rigid Flex.
Display device the most according to claim 5, wherein said backlight module comprises at least further
One blooming piece, described blooming piece is arranged at described exiting surface, and has kink, described kink
It is correspondingly arranged with described incidence surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354404.5A CN106287577A (en) | 2015-06-24 | 2015-06-24 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354404.5A CN106287577A (en) | 2015-06-24 | 2015-06-24 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287577A true CN106287577A (en) | 2017-01-04 |
Family
ID=57650842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510354404.5A Pending CN106287577A (en) | 2015-06-24 | 2015-06-24 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287577A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353849A (en) * | 2015-07-15 | 2017-01-25 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN114624810A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Backlight unit light source inclined touch screen |
| CN114624811A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Production method of display screen backlight module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893189A (en) * | 2010-07-14 | 2010-11-24 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| US20120293725A1 (en) * | 2010-01-07 | 2012-11-22 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| CN104536079A (en) * | 2014-12-31 | 2015-04-22 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with light guide plate |
-
2015
- 2015-06-24 CN CN201510354404.5A patent/CN106287577A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120293725A1 (en) * | 2010-01-07 | 2012-11-22 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| CN101893189A (en) * | 2010-07-14 | 2010-11-24 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN104536079A (en) * | 2014-12-31 | 2015-04-22 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module with light guide plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353849A (en) * | 2015-07-15 | 2017-01-25 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN114624810A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Backlight unit light source inclined touch screen |
| CN114624811A (en) * | 2022-05-17 | 2022-06-14 | 深圳市北泰显示技术有限公司 | Production method of display screen backlight module |
| CN114624811B (en) * | 2022-05-17 | 2022-08-16 | 深圳市北泰显示技术有限公司 | Production method of display screen backlight module |
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Application publication date: 20170104 |