CN109541851A - Side entrance back module - Google Patents
Side entrance back module Download PDFInfo
- Publication number
- CN109541851A CN109541851A CN201910013593.8A CN201910013593A CN109541851A CN 109541851 A CN109541851 A CN 109541851A CN 201910013593 A CN201910013593 A CN 201910013593A CN 109541851 A CN109541851 A CN 109541851A
- Authority
- CN
- China
- Prior art keywords
- light
- backlight
- guide plate
- light guide
- entrance back
- 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.)
- Pending
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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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a kind of side entrance back module.The side entrance back module includes light guide plate and the backlight positioned at the side of the light guide plate；The top surface of the light guide plate is light-emitting surface, and the side opposite with the backlight is incidence surface；The light-emitting surface includes effective output optical zone and the non-effective output optical zone for surrounding effective output optical zone；Light conversion layer is all covered on the non-effective output optical zone and incidence surface, the light guide plate is covered with leakproof photosphere on other sides in addition to incidence surface；The light that the light conversion layer is used to issue backlight carries out light conversion；The light that the leakproof photosphere is used to that backlight to be prevented to be emitted is converted without light and is directly emitted, by being all covered with light conversion layer on non-effective output optical zone and incidence surface, leakproof photosphere is covered on other sides in addition to incidence surface, it can be effectively improved the light leakage phenomena of backlight module, promote the optical quality of backlight module.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of side entrance back modules.
Background technique
Thin Film Transistor-LCD (Thin Film Transistor-Liquid Crystal Display, TFT-
LCD) there are many merits such as thin fuselage, power saving, radiationless, be widely used.Such as: LCD TV, mobile phone, a
Personal digital assistant (PDA), digital camera, computer screen or laptop screen etc., account for leading in flat display field
Status.Liquid crystal display on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and backlight module
(Ba cklig ht Module).The working principle of liquid crystal display panel is in thin-film transistor array base-plate (Thin Film
Transistor Array Substrate, TFT Array Substrate) and colored filter substrate (Color Filter,
CF apply driving voltage on) to control the direction of rotation of liquid crystal molecule between two substrates, the light refraction of backlight module is gone out
To generate picture.
Since liquid crystal display panel itself does not shine, need the light source provided by backlight module normally to show image,
Therefore backlight module becomes one of the key component of liquid crystal display.Backlight module is divided into side according to the difference of light source incidence position
Enter formula backlight module and two kinds of down straight aphototropism mode set.Down straight aphototropism mode set is by illuminating source such as cathodouminescence fluorescent tube
(Cold Cathode Fluorescent Lamp, CCFL) or light emitting diode (Light Emitting Diode, LED) are set
It sets at liquid crystal display panel rear, directly forms area source and be supplied to liquid crystal display panel.And side entrance back module is by LED light bar
(Light bar) is set to the side rear of liquid crystal display panel as backlight.
Currently, the color gamut levels of TFT LCD part are generally 72% or so, in order to further improve colour gamut water
Flat, quantum dot (Quantum Dot) back light model setting technology is come into being.Quantum dot light emitting material abides by quantum size effect,
Property changes with the change in size of quantum dot.When the stimulation by light or electricity, quantum dot can issue coloured light, light
Color is related with its property, therefore can be controlled by changing its size the light that it is issued.Quantum dot light emitting material
Have many advantages, such as that luminescent spectrum concentration, excitation purity are high.It, can be significantly by quantum dot light emitting material use in field of display technology
The colour gamut for improving traditional monitor, enhances the color restoration capability of display.Quantum is utilized in quantum dot backlight module
This feature of point is irradiated the coloured light of excitation different colours using the irradiation of LED backlight to quantum dot layer, and thoroughly with part
The Colored light mixing for crossing quantum dot obtains white light, to promote the illumination effect of entire backlight module.But existing quantum dot back
Optical mode group has that brightness is relatively low.
In existing side entrance back module, to obtain the white light in higher color domain, feasible mode mainly has and following has 3
Kind: 1, using blue light backlight excitation it is packaged in quantum dot layer that backlight go out spire portion；2, it is led using blue-light LED chip excitation
The quantum dot layer of tabula rasa incident side；3, it is obtained using the quantum dot layer of (i.e. on light-emitting surface) at the top of blue-light LED chip excitation light guide plate
To white light, wherein in the first way, since LED calorific value is larger, quantum dot layer is more sensitive to temperature, therefore not applicable
In the backlight module of yield production type；In the second way, due to light emitting angle and the tolerance of structure contraposition, the portion that backlight issues
Divide blue light that can cross quantum dot layer, reflects via the glue frame for being used to support liquid crystal display panel above light guide plate from the top of light guide plate
The non-effective output optical zone at face edge enters light guide plate, then after the reflection of the reflector plate of light guide plate bottom among light guide plate
Effective output optical zone outgoing, which is not changed into white light and is directly emitted, and then optical quality is caused to reduce；At the third
In mode, some blue light can be emitted from the side of light guide plate, and cross the quantum dot layer at the top of light guide plate, be directly incident on display
In panel, which is not changed into white light and is directly emitted, and causes the light of the marginal portion of display panel poor quality.
Summary of the invention
The purpose of the present invention is to provide a kind of side entrance back modules, can improve the light leakage phenomena of backlight module, mention
Rise the optical quality of backlight module.
The object of the invention is also to provide a kind of display devices, can improve the light leakage phenomena of backlight module, promote back
The optical quality of optical mode group.
To achieve the above object, it the present invention provides a kind of side entrance back module, including light guide plate and is led positioned at described
The backlight of the side of tabula rasa；
The top surface of the light guide plate is light-emitting surface, and the side opposite with the backlight is incidence surface；
The light-emitting surface includes effective output optical zone and the non-effective output optical zone for surrounding effective output optical zone；It is described non-effective
Light conversion layer is all covered on output optical zone and incidence surface, the light guide plate is covered with leakproof on other sides in addition to incidence surface
Photosphere；
The light that the light conversion layer is used to issue backlight carries out light conversion；
The light that the leakproof photosphere is used to that backlight to be prevented to be emitted is converted without light and is directly emitted.
The light conversion layer and leakproof photosphere are quantum dot layer.
The light conversion layer is quantum dot layer, and the leakproof photosphere is reflecting layer.
The light that the backlight issues is blue light, and the light conversion layer is white for being converted to the blue light that backlight issues
Light.
The backlight is LED light source.
The side entrance back module further includes backboard, and the light guide plate and backlight are set on the backboard.
The backboard includes bottom plate and the side plate that is vertically connected with the bottom plate, and the light guide plate is set on the bottom plate,
The backlight is set on the side plate.
The side entrance back module further includes the reflector plate for covering the bottom surface of the light guide plate.
The side entrance back module further includes the optical diaphragm group on the light-emitting surface.
The present invention also provides a kind of display devices, including above-mentioned side entrance back module.
Beneficial effects of the present invention: the present invention provides a kind of side entrance back module, including light guide plate and leads positioned at described
The backlight of the side of tabula rasa；The top surface of the light guide plate is light-emitting surface, and the side opposite with the backlight is incidence surface；Institute
Stating light-emitting surface includes effective output optical zone and the non-effective output optical zone for surrounding effective output optical zone；The non-effective output optical zone and enter
Light conversion layer is all covered in smooth surface, the light guide plate is covered with leakproof photosphere on other sides in addition to incidence surface；It is described
The light that light conversion layer is used to issue backlight carries out light conversion；The light that the leakproof photosphere is used to that backlight to be prevented to be emitted
It converts without light and is directly emitted, by being all covered with light conversion layer on non-effective output optical zone and incidence surface, removing incidence surface
It is covered with leakproof photosphere on other sides in addition, the light leakage phenomena of backlight module can be effectively improved, promote backlight module
Optical quality.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the schematic diagram of side entrance back module of the invention；
Fig. 2 is the schematic diagram of the first embodiment of the light guide plate of side entrance back module of the invention；
Fig. 3 is the schematic diagram of the second embodiment of the light guide plate of side entrance back module of the invention；
Fig. 4 is the schematic diagram of display device of the invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
It please refers to Fig.1 to Fig.3, the present invention provides a kind of side entrance back module, including light guide plate 1 and is located at the leaded light
The backlight 2 of the side of plate 1；
The top surface of the light guide plate 1 is light-emitting surface 11, and the side opposite with the backlight 2 is incidence surface 12；
The light-emitting surface 11 includes effective output optical zone 111 and the non-effective output optical zone for surrounding effective output optical zone 111
112；Be all covered with light conversion layer 3 on the non-effective output optical zone 112 and incidence surface 12, the light guide plate 1 except incidence surface 12 with
Leakproof photosphere 4 is covered on other outer sides；
The light that the light conversion layer 3 is used to issue backlight 2 carries out light conversion；
The light that the leakproof photosphere 4 is used to that backlight 2 to be prevented to be emitted is converted without light and is directly emitted.
Specifically, it please refers to Fig. 1 and combines Fig. 2, in the first embodiment of the present invention, the light conversion layer 3 and leakproof
Photosphere 4 is quantum dot layer.Specifically, the light guide plate 1 be in cuboid, top surface be light-emitting surface 11, left side be into
Smooth surface 12, the non-effective output optical zone 112 of the light-emitting surface 11 of the light guide plate 1, incidence surface 12 and right side, leading flank and trailing flank
On be all covered with quantum dot layer, wherein the quantum dot layer on non-effective output optical zone 112 and incidence surface 12 be used as side of the invention enter
The light conversion layer 3 of formula backlight module, the quantum dot layer on the right side, leading flank and trailing flank are used as side entering type of the invention
The leakproof photosphere 4 of backlight module.
Further, in the first embodiment of the present invention, the light that the backlight 2 issues is blue light, and the light turns
Layer 3 is changed for the blue light that backlight 2 issues to be converted to white light, also the quantum dot layer in the first embodiment of the present invention can incite somebody to action
Blue light is converted to white light.
It should be noted that in the first embodiment of the present invention, the blue light that the backlight 2 issues largely passes through
The quantum dot layer of incident side is converted into white light and is incident in light guide plate 1, fraction without incident side quantum dot layer, but
It is incident on light guide plate 1 from non-effective output optical zone 111 by reflection, at this time due to being also set to quantum dot on non-effective output optical zone 111
Layer, therefore it is also translated into white light from the blue light that light guide plate 1 is incident in non-effective output optical zone 111, in addition, on the right side of light guide plate 1
Also is provided with quantum dot layer on side, leading flank and trailing flank, if having at this time blue light be intended to the right side from light guide plate 1, leading flank and
Trailing flank outgoing, the quantum dot layer on the right side of the light guide plate 1, leading flank and trailing flank can also be converted into white light,
To guarantee that the light being emitted from light guide plate 1 is the white light converted by light, avoids blue light from being emitted, influence display quality.
Specifically, it please refers to Fig. 1 and combines Fig. 3, in the second embodiment of the present invention, the light conversion layer 3 is quantum
Point layer, the leakproof photosphere 4 is reflecting layer.Specifically, the light guide plate 1 is in cuboid, and top surface is light-emitting surface 11,
Left side is incidence surface 12, and the non-effective output optical zone 112 of the light-emitting surface 11 of the light guide plate 1 and incidence surface 12 are all covered with quantum
Point layer, right side, leading flank and trailing flank are all covered with reflecting layer, wherein the amount on non-effective output optical zone 112 and incidence surface 12
Son point layer is used as the light conversion layer 3 of side entrance back module of the invention, the reflection on the right side, leading flank and trailing flank
Layer is used as the leakproof photosphere 4 of side entrance back module of the invention.
Further, in the second embodiment of the present invention, the light that the backlight 2 issues is blue light, and the light turns
Layer 3 is changed for the blue light that backlight 2 issues to be converted to white light, also the quantum dot layer in the second embodiment of the present invention can incite somebody to action
Blue light is converted to white light.
It should be noted that the blue light that the backlight 2 issues largely passes through in the second embodiment of the present invention
The quantum dot layer of incident side is converted into white light and is incident in light guide plate 1, fraction without incident side quantum dot layer, but
It is incident on light guide plate 1 from non-effective output optical zone 111 by reflection, at this time due to being also set to quantum dot on non-effective output optical zone 111
Layer, therefore it is also translated into white light from the blue light that light guide plate 1 is incident in non-effective output optical zone 111, in addition, on the right side of light guide plate 1
It also is provided with reflecting on side, leading flank and trailing flank, if there is blue light to be intended to the right side from light guide plate 1, leading flank and rear side at this time
Face outgoing, the reflection on the right side of the light guide plate 1, leading flank and trailing flank will be reflected, its outgoing is prevented, thus
Guarantee that the light being emitted from light guide plate 1 is the white light converted by light, avoids blue light from being emitted, influence display quality.
Preferably, the backlight 2 is LED light source.
Specifically, the side entrance back module further includes backboard 5, and the light guide plate 1 and backlight 2 are set to the back
On plate 5.Further, the backboard 5 includes bottom plate 51 and the side plate 52 being vertically connected with the bottom plate 51, the light guide plate 1
On the bottom plate 51, the backlight is set on the side plate 52.
Specifically, the side entrance back module further includes reflector plate 6, the Yi Jishe for covering the bottom surface of the light guide plate 1
Optical diaphragm group 7 on the light-emitting surface 11, the optical diaphragm group 7 may include the optical diaphragms such as diffusion sheet and prismatic lens.
Referring to Fig. 4, the present invention also provides a kind of display device, including above-mentioned side entrance back module.
Specifically, as shown in figure 4, the display device is liquid crystal display device comprising above-mentioned side entrance back mould
Group and the glue frame 8 on the backboard 5 of the side entrance back module, liquid crystal display panel 9 in the glue frame 8 and
Liquid crystal display panel 9 is fixed on the front frame 10 in glue frame 8, the glue frame 8 blocks the non-effective output optical zone of the light guide plate 1
112。
Further, the liquid crystal display device passes through equal on the non-effective output optical zone 112 of light guide plate 1 and incidence surface 12
It is covered with light conversion layer 3, leakproof photosphere 3 is covered on other sides in addition to incidence surface 12, backlight mould can be effectively improved
The light leakage phenomena of group, promotes the surrounding of the optical quality of backlight module and the display quality of display device, especially backlight module
The display quality of the edge of display area of the optical quality and display device at edge.
In conclusion the present invention provides a kind of side entrance back module, including light guide plate and positioned at the one of the light guide plate
The backlight of side；The top surface of the light guide plate is light-emitting surface, and the side opposite with the backlight is incidence surface；The light-emitting surface
Non-effective output optical zone including effective output optical zone and encirclement effective output optical zone；On the non-effective output optical zone and incidence surface
It is covered with light conversion layer, the light guide plate is covered with leakproof photosphere on other sides in addition to incidence surface；The light conversion layer
Light for issuing to backlight carries out light conversion；The light that the leakproof photosphere is used to that backlight to be prevented to be emitted turns without light
It changes and is directly emitted, by being all covered with light conversion layer on non-effective output optical zone and incidence surface, in its in addition to incidence surface
He is covered with leakproof photosphere on side, can be effectively improved the light leakage phenomena of backlight module, promotes the optical quality of backlight module.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (10)
1. a kind of side entrance back module, which is characterized in that including light guide plate (1) and be located at the side of the light guide plate (1)
Backlight (2)；
The top surface of the light guide plate (1) is light-emitting surface (11), and opposite side is incidence surface (12) with the backlight (2)；
The light-emitting surface (11) includes effective output optical zone (111) and the non-effective output optical zone for surrounding effective output optical zone (111)
(112)；It is all covered with light conversion layer (3) on the non-effective output optical zone (112) and incidence surface (12), the light guide plate (1) is removed
Leakproof photosphere (4) are covered on other sides other than incidence surface (12)；
The light that the light conversion layer (3) is used to issue backlight (2) carries out light conversion；
The light that the leakproof photosphere (4) is used to that backlight (2) to be prevented to be emitted is converted without light and is directly emitted.
2. side entrance back module as described in claim 1, which is characterized in that the light conversion layer (3) and leakproof photosphere (4)
It is quantum dot layer.
3. side entrance back module as described in claim 1, which is characterized in that the light conversion layer (3) is quantum dot layer, institute
Stating leakproof photosphere (4) is reflecting layer.
4. side entrance back module as described in claim 1, which is characterized in that the light that the backlight (2) issues is indigo plant
Light, the light conversion layer (3) are used to the blue light that backlight (2) issue being converted to white light.
5. side entrance back module as described in claim 1, which is characterized in that the backlight (2) is LED light source.
6. side entrance back module as described in claim 1, which is characterized in that it further include backboard (5), the light guide plate (1)
And backlight (2) is set on the backboard (5).
7. side entrance back module as claimed in claim 6, which is characterized in that the backboard (5) include bottom plate (51) and with
The side plate (52) that the bottom plate (51) is vertically connected, the light guide plate (1) are set on the bottom plate (51), and the backlight is set to
On the side plate (52).
8. side entrance back module as described in claim 1, which is characterized in that further include the bottom for covering the light guide plate (1)
The reflector plate (6) in face.
9. side entrance back module as described in claim 1, which is characterized in that further include being set on the light-emitting surface (11)
Optical diaphragm group (7).
10. a kind of display device, which is characterized in that including side entrance back module as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013593.8A CN109541851A (en) | 2019-01-07 | 2019-01-07 | Side entrance back module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013593.8A CN109541851A (en) | 2019-01-07 | 2019-01-07 | Side entrance back module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109541851A true CN109541851A (en) | 2019-03-29 |
Family
ID=65834538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910013593.8A Pending CN109541851A (en) | 2019-01-07 | 2019-01-07 | Side entrance back module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109541851A (en) |
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| CN205982937U (en) * | 2016-09-14 | 2017-02-22 | 信利半导体有限公司 | Backlight and liquid crystal display module |
| CN106526963A (en) * | 2016-11-30 | 2017-03-22 | 厦门天马微电子有限公司 | Liquid crystal display device |
| CN206270536U (en) * | 2016-12-15 | 2017-06-20 | 厦门市京骏科技有限公司 | A kind of leaded light component for entering bar with quantum dot side |
| CN107407832A (en) * | 2015-03-09 | 2017-11-28 | 夏普株式会社 | Lighting device, display device and radiovisor |
| CN107621733A (en) * | 2017-10-30 | 2018-01-23 | 深圳市巨世科技股份有限公司 | Side entrance back module |
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2019
- 2019-01-07 CN CN201910013593.8A patent/CN109541851A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202511145U (en) * | 2012-04-12 | 2012-10-31 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display |
| CN103941475A (en) * | 2014-04-30 | 2014-07-23 | 深圳市华星光电技术有限公司 | Liquid crystal display module and liquid crystal display device |
| CN104061496A (en) * | 2014-05-29 | 2014-09-24 | 瑞仪光电股份有限公司 | Backlight module |
| CN107407832A (en) * | 2015-03-09 | 2017-11-28 | 夏普株式会社 | Lighting device, display device and radiovisor |
| CN104991378A (en) * | 2015-07-09 | 2015-10-21 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
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| CN205982937U (en) * | 2016-09-14 | 2017-02-22 | 信利半导体有限公司 | Backlight and liquid crystal display module |
| CN106526963A (en) * | 2016-11-30 | 2017-03-22 | 厦门天马微电子有限公司 | Liquid crystal display device |
| CN206270536U (en) * | 2016-12-15 | 2017-06-20 | 厦门市京骏科技有限公司 | A kind of leaded light component for entering bar with quantum dot side |
| CN107621733A (en) * | 2017-10-30 | 2018-01-23 | 深圳市巨世科技股份有限公司 | Side entrance back module |
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