CN104913245A - High gamut backlight module and display device - Google Patents
High gamut backlight module and display device Download PDFInfo
- Publication number
- CN104913245A CN104913245A CN201510312709.XA CN201510312709A CN104913245A CN 104913245 A CN104913245 A CN 104913245A CN 201510312709 A CN201510312709 A CN 201510312709A CN 104913245 A CN104913245 A CN 104913245A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- white light
- backlight module
- colour gamut
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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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
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
-
- 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
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (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 invention discloses a high gamut backlight module which comprises a transmitting glue frame, a light guide plate and an optical film group. The vertical face of the glue frame is opposite to the side face of the optical film group, the inclined plane of the glue frame is simultaneously towards the end face of the light guide plate and the lower surface of the optical film group, the surface of the inclined plane is a white light excitation layer, and blue light ejected out of the end face of the light guide plate is injected into the white light excitation layer to perform excitation to form white light. The glue frame is provided with the inclined plane opposite to the light guide plate, the surface of the inclined plane is provided with the white light excitation layer, the blue light ejected out of the end face of the light guide plate is injected into the white light excitation layer to perform excitation to form white light; meanwhile, quantum films are formed between the upper surface of the light guide plate and the optical film group, the white light excitation layer is subject to the excitation of the blue light to generate white light and the white light penetrates inactive areas of the quantum films, what is ejected out of the top surface of the light guide plate is also white light, the color difference between the white light is small, the problem of color difference of a visible area can be effectively solved, and the gamut evenness of the backlight module is high. The invention also discloses a display device.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of high colour gamut backlight module and display unit.
Background technology
At present, liquid crystal indicator has been widely used in various electronic product as the display unit of electronic equipment, and consumer requires more and more higher for the in bright gay color degree of equipment, and this just needs the color gamut value improving display unit; Backlight module is then a vitals in liquid crystal indicator, and its colour gamut as the lamp bar of light source certainly will require more and more higher.
Generally, backlight module comprises: light guide plate, be arranged at glue frame, lamp source flexible PCB and shading rubber belt around light guide plate, lamp source flexible PCB is fixed on light guide plate and glue frame by shading rubber belt, blooming piece is also fixed on glue frame by shading two-sided tape, and LCDs is then fixed by double faced adhesive tape and backlight module surrounding.
But cut due to high colour gamut diaphragm the dead space that there is one fixed width at edge, cause the color of dead space and the color in other regions to produce aberration, colour gamut lack of homogeneity.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of aberration is little, colour gamut uniformity is high backlight module and display unit.
In order to realize above-mentioned object, present invention employs following technical scheme:
A kind of high colour gamut backlight module, comprise the glue frame of printing opacity, light guide plate and optical diaphragm group, described blooming piece is mounted on described light guide plate, the medial surface of described glue frame comprises vertical plane and inclined plane, the side of described vertical plane and described optical diaphragm group is oppositely arranged, described inclined plane is simultaneously towards the end face of described light guide plate and the lower surface of optical diaphragm group, described inclined plane surface is white light excitation layer, and the blue light penetrated from the end face of described light guide plate is incident upon described white light excitation layer and excites formation white light.
Wherein, described optical diaphragm group is greater than described light guide plate towards the development length of described glue frame side.
Wherein, described high colour gamut backlight module also comprises reflecting layer, and the lower surface of described light guide plate is located in described reflecting layer.
Wherein, described high colour gamut backlight module also comprises backboard, and the lower surface of described light guide plate is located at by described backboard.
Wherein, described high colour gamut backlight module also comprises quantum diaphragm, and described quantum diaphragm is located between described light guide plate and described optical diaphragm group.
Wherein, described white light excitation layer is yellow fluorescence bisque.
Or described white light excitation layer is quanta point material layer.
Wherein, described quantum diaphragm is identical at the development length of the side being provided with described white light excitation layer with described optical diaphragm group.
Present invention also offers a kind of display unit, comprise display floater and above-mentioned backlight module, described display floater is located at described backlight module upper surface.
Glue frame of the present invention has the inclined plane be oppositely arranged with light guide plate, the surface of this inclined plane is white light excitation layer, the blue light penetrated from the end face of light guide plate is incident upon white light excitation layer and excites formation white light, simultaneously, quantum diaphragm is provided with between the upper surface and optical diaphragm group of light guide plate, white light excitation layer is by the dead space of blue-light excited generation white light through quantum diaphragm, and what penetrate from the end face of light guide plate is also white light, the two aberration is little, effectively can solve the aberration problem of visible area, the colour gamut uniformity of backlight module is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the display unit of the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the invention discloses a kind of backlight module of high colour gamut, comprise glue frame 10, light guide plate 20, optical diaphragm group 30 and quantum diaphragm 40, optical diaphragm group 30 and quantum diaphragm 40 stack gradually from top to bottom on light guide plate 20, the medial surface of glue frame 10 comprises vertical plane 11 and inclined plane 12, vertical plane 11 is oppositely arranged with the side of optical diaphragm group 30, inclined plane 12 is simultaneously towards the end face of light guide plate 20 and the lower surface of optical diaphragm group 30, inclined plane 12 surface is white light excitation layer 10a, the blue light penetrated from the end face of light guide plate 20 is incident upon white light excitation layer 10a and excites formation white light.
Further, the lower surface of light guide plate 20 is provided with reflecting layer 50, and the lower surface in reflecting layer 50 is located at by backboard 60.Angle between inclined plane 12 and light guide plate 20 end face is 30 ° ~ 120 ° and is advisable.
White light excitation layer 10a is yellow fluorescence bisque or quanta point material layer, can send white light by blue-light excited.Preferred quantum diaphragm 40 is identical at the development length of the side being provided with white light excitation layer 10a with optical diaphragm group 30.Optical diaphragm group 30, quantum diaphragm 40 are greater than the development length of light guide plate 20 in this side towards the development length of glue frame 10 side, after backlight module has been assembled, optical diaphragm group 30 and quantum diaphragm 40 are connected on the vertical plane 11 of glue frame 10, the inclined plane 12 of glue frame 10 is then positioned at the side of light guide plate 20, and final inclined plane 12 is acute angle with the angle of quantum diaphragm 40, light guide plate 20 end face.
Be understandable that, white light excitation layer 10a can be the yellow fluorescent powder or quanta point material that apply in the inclined plane of glue frame 10, also can be a Rotating fields of design separately.
The part that quantum diaphragm 40 is relative with glue frame 10 is diaphragm inefficacy district 40a, remainder is visible area, because optical diaphragm group 30 lower surface is provided with one deck quantum diaphragm 40, the circumferential side frame inefficacy district 40a of quantum diaphragm 40 is bigger than normal, due to the setting of glue frame 10, when LED light source is lighted, the side of light guide plate 20 sends blue light, the end face of light guide plate 20 sends the light of white, the blue light that the side of light guide plate 20 sends inspires white light through white light excitation layer 10a, last from end face outgoing to diaphragm inefficacy district 40a, and the white light outgoing that the end face of light guide plate 20 sends is to visible area, the white light aberration sent with inefficacy district 40a is little, backlight module colour gamut uniformity is high.
Present invention also offers a kind of display unit, comprise display floater 70 and backlight module, display floater 70 is located at optical diaphragm group 30 upper surface of backlight module.Shading rubber belt 1 is pasted onto the lower surface of display floater 70 non-display area, and be pasted onto the vertical portion upper surface of backboard 60 and optical diaphragm group 30 portion of upper surface, play the effect preventing light pollution.
Glue frame of the present invention has the inclined plane be oppositely arranged with light guide plate, the surface of this inclined plane is white light excitation layer, the blue light penetrated from the end face of light guide plate is incident upon white light excitation layer and excites formation white light, simultaneously, quantum diaphragm is provided with between the upper surface and optical diaphragm group of light guide plate, white light excitation layer is by the dead space of blue-light excited generation white light through quantum diaphragm, and what penetrate from the end face of light guide plate is also white light, the two aberration is little, effectively can solve the aberration problem of visible area, the colour gamut uniformity of backlight module is high.
The above is only the detailed description of the invention of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (9)
1. one kind high colour gamut backlight module, it is characterized in that, comprise the glue frame (10) of printing opacity, light guide plate (20) and optical diaphragm group (30), described optical diaphragm group (30) is located on described light guide plate (20), the medial surface of described glue frame (10) comprises vertical plane (11) and inclined plane (12), described vertical plane (11) is oppositely arranged with the side of described optical diaphragm group (30), described inclined plane (12) is simultaneously towards the end face of described light guide plate (20) and the lower surface of optical diaphragm group (30), the surface of described inclined plane (12) is white light excitation layer (10a), the blue light penetrated from the end face of described light guide plate (20) is incident upon described white light excitation layer (10a) and excites formation white light.
2. high colour gamut backlight module according to claim 1, is characterized in that, described optical diaphragm group (30) is greater than described light guide plate (20) towards the development length of described glue frame (10) side.
3. high colour gamut backlight module according to claim 1, is characterized in that, also comprises reflecting layer (50), and described reflecting layer (50) are located at the lower surface of described light guide plate (20).
4. high colour gamut backlight module according to claim 1, is characterized in that, also comprises backboard (60), and the lower surface of described light guide plate (20) is located at by described backboard (60).
5. according to the arbitrary described high colour gamut backlight module of claim 1-4, it is characterized in that, also comprise quantum diaphragm (40), described quantum diaphragm (40) is located between described light guide plate (20) and described optical diaphragm group (30).
6. high colour gamut backlight module according to claim 5, is characterized in that, described white light excitation layer (10a) is yellow fluorescence bisque.
7. high colour gamut backlight module according to claim 5, is characterized in that, described white light excitation layer
(10a) be quanta point material layer.
8. high colour gamut backlight module according to claim 5, is characterized in that, described quantum diaphragm (40) is identical at the development length of the side being provided with described white light excitation layer (10a) with described optical diaphragm group (30).
9. a display unit, is characterized in that, comprise display floater (70) and the arbitrary described backlight module of claim 1-8, described display floater (70) is located at described backlight module upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312709.XA CN104913245B (en) | 2015-06-08 | 2015-06-08 | A kind of high colour gamut backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312709.XA CN104913245B (en) | 2015-06-08 | 2015-06-08 | A kind of high colour gamut backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104913245A true CN104913245A (en) | 2015-09-16 |
| CN104913245B CN104913245B (en) | 2018-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510312709.XA Active CN104913245B (en) | 2015-06-08 | 2015-06-08 | A kind of high colour gamut backlight module and display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588040A (en) * | 2016-01-05 | 2016-05-18 | 武汉华星光电技术有限公司 | Backlight module based on quantum dots, and display device |
| CN106918951A (en) * | 2015-12-24 | 2017-07-04 | 乐金显示有限公司 | Back light unit and the liquid crystal display including the back light unit |
| CN107203064A (en) * | 2017-07-03 | 2017-09-26 | 厦门天马微电子有限公司 | A kind of display device |
| CN108775541A (en) * | 2018-06-25 | 2018-11-09 | 福州大学 | A kind of novel quantum dot body light guide plate back light module unit structure and preparation method thereof |
| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
| CN111158189A (en) * | 2020-01-06 | 2020-05-15 | 京东方科技集团股份有限公司 | Backlight module, manufacturing method and display device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918951A (en) * | 2015-12-24 | 2017-07-04 | 乐金显示有限公司 | Back light unit and the liquid crystal display including the back light unit |
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| CN109254450A (en) * | 2017-07-13 | 2019-01-22 | Lg 电子株式会社 | Display device |
| CN109254450B (en) * | 2017-07-13 | 2022-07-12 | Lg 电子株式会社 | Display device |
| CN108775541A (en) * | 2018-06-25 | 2018-11-09 | 福州大学 | A kind of novel quantum dot body light guide plate back light module unit structure and preparation method thereof |
| CN108775541B (en) * | 2018-06-25 | 2020-03-10 | 福州大学 | Novel quantum dot light guide plate backlight module structure and preparation method thereof |
| CN111158189A (en) * | 2020-01-06 | 2020-05-15 | 京东方科技集团股份有限公司 | Backlight module, manufacturing method and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104913245B (en) | 2018-04-27 |
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