CN104360536A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN104360536A CN104360536A CN201410594234.3A CN201410594234A CN104360536A CN 104360536 A CN104360536 A CN 104360536A CN 201410594234 A CN201410594234 A CN 201410594234A CN 104360536 A CN104360536 A CN 104360536A
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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
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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
- G02F1/133528—Polarisers
-
- 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
-
- 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
- G02F1/133618—Illuminating devices for ambient light
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- 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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device. The display panel comprises an upper polarizer, a lower polarizer, a liquid crystal layer and an array substrate, wherein the liquid crystal layer and the array substrate are arranged between the upper polarizer and the lower polarizer, a plurality of pixel units are arranged on the array substrate, and each pixel unit is provided with a plurality of subpixel units displaying different colors. The display panel further comprises a quantum dot layer, wherein the quantum dot layer is arranged on the side, far from the liquid crystal layer, of the lower polarizer, and light is emitted by the quantum dot layer through the excitation of external light. According to the display panel displayed by the invention, light is emitted by the quantum dot layer through the excitation of external light, so that a light source does not need to be provided by a backlight module structure, and the lightening and thinning of the display device are realized.
Description
Technical field
The present invention relates to display technique field, particularly a kind of display panel and display device.
Background technology
Available liquid crystal display device (Liquid Crystal Display is called for short LCD) comprises backlight module and display panel, and backlight module provides sufficient brightness and the light source be evenly distributed, thus can realize normal show image on a display panel.
Backlight module of the prior art is roughly divided into straight-down negative and side entering type two kinds, and wherein down straight aphototropism mode set is below light source being arranged on light guide plate, each layer optical film material of light guide plate, such as diffusion sheet, lower brightening piece, upper brightening piece, prismatic lens etc.; Side entrance back module is side light source being arranged on light guide plate, is provided with optical film material equally above light guide plate.
In sum, in prior art be all liquid crystal indicator need to utilize and be arranged on illumination that the backlight module after display panel sends and penetrate and could realize normal display on a display panel, but due to the existence of backlight module, not only increase the integral thickness of liquid crystal indicator, also add the overall weight of liquid crystal indicator, the lightening of liquid crystal indicator cannot be realized.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: how to realize the lightening of liquid crystal indicator.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of display panel, comprise polaroid, lower polaroid and the liquid crystal layer be arranged between described upper polaroid and described lower polaroid and array base palte, described array base palte is provided with multiple pixel cell, each described pixel cell has the sub-pixel unit of multiple display different colours, wherein, also comprise and be arranged on the quantum dot layer of described lower polaroid away from described liquid crystal layer side, described quantum dot layer is by the stimulated luminescence of ambient light.
Further, described quantum dot layer excites the light sent to be white light by described ambient light.
Further, between described upper polaroid and described lower polaroid, be also provided with colored filter, described colored filter be provided with the filtered region corresponding to each described sub-pixel unit color.
Further, described colored filter is also provided with black matrix between arbitrary neighborhood two filtered region.
Further, described quantum dot layer comprises the light-emitting zone corresponding to each described sub-pixel unit, and each light-emitting zone sends the light corresponding to described sub-pixel unit color under the exciting of described ambient light.
Further, black matrix is also provided with between arbitrary neighborhood two light-emitting zones of described quantum dot layer.
Further, described quantum dot layer is also provided with reflection horizon away from described lower polaroid side.
For solving the problems of the technologies described above, present invention also offers a kind of display device, it is characterized in that, comprise light source and any one display panel above-mentioned, described light source is for providing the ambient light of described display panel.
Further, described light source is positioned at the display side of described display panel.
Further, described light source comprises LED and secondary optical lens.
Further, described light source is ultraviolet source.
(3) beneficial effect
Display panel provided by the invention, quantum dot layer is wherein luminous by exciting of ambient light, thus does not need back light module unit structure to provide light source for it, and then realizes the lightening of display device.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of display panel that embodiment of the present invention provides;
Fig. 2 is the structural representation of the another kind of display panel that embodiment of the present invention provides;
Fig. 3 is the principle schematic of sub-pix on state of display in the display panel that provides of embodiment of the present invention;
Fig. 4 is the principle schematic of sub-pix dark-state display in the display panel that provides of embodiment of the present invention;
Fig. 5 is the structural representation of another display panel that embodiment of the present invention provides;
Fig. 6 is the structural representation of a kind of display device that embodiment of the present invention provides.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the schematic diagram of a kind of display panel that embodiment of the present invention provides, this display panel comprises polaroid 1, lower polaroid 2 and the liquid crystal layer 3 be arranged between described upper polaroid 1 and described lower polaroid 2 and array base palte 4, described array base palte 4 is provided with multiple pixel cell, each described pixel cell has the sub-pixel unit of multiple display different colours, wherein, this display panel also comprises and is arranged on the quantum dot layer 5 of described lower polaroid 2 away from described liquid crystal layer 3 side, and described quantum dot layer is by the stimulated luminescence of ambient light.Such as, described ambient light can be ultraviolet light.
The display panel that embodiment of the present invention provides, quantum dot layer is wherein luminous by exciting of ambient light, thus does not need back light module unit structure to provide light source for it, and then realizes the lightening of display device.
Fig. 2 is the schematic diagram of the another kind of display panel that embodiment of the present invention provides, this display panel comprises polaroid 1, lower polaroid 2 and the liquid crystal layer 3 be arranged between described upper polaroid 1 and described lower polaroid 2 and array base palte 4, described array base palte 4 is provided with multiple pixel cell, each described pixel cell has the sub-pixel unit of multiple display different colours, wherein, this display panel also comprises and is arranged on the quantum dot layer 51 of described lower polaroid 2 away from described liquid crystal layer 3 side, described quantum dot layer 51 is by ambient light exciting light, and its light sent is white light, in addition, colored filter 6 is also provided with between described upper polaroid 1 and described lower polaroid 2, described colored filter 6 is provided with the filtered region 61 corresponding to each described sub-pixel unit color, and colored filter is also provided with black matrix 62 between arbitrary neighborhood two filtered region.
The display panel that embodiment of the present invention provides, quantum dot layer 51 wherein sends white light under the exciting of ambient light, and the colour display of display panel is realized by colored filter 6, wherein, this quantum dot layer 51 can be made by white light quanta point material and obtain, and also red quantum point material, green light quantum point material and blue light quantum point material can be mixed rear making and obtain.
Preferably, in order to the utilization factor of light can be improved, also at quantum dot layer, reflection horizon 7 can be set away from described lower polaroid side.
Fig. 3 is the principle schematic of sub-pix on state of display in this display panel, particularly, ambient light (ultraviolet light that UV light source 8 sends) becomes polarized light after upper polarizer 1, now, Liquid Crystal Molecules Alignment in region corresponding with this sub-pix in liquid crystal layer 3 does not have optical activity, it does not change the polarizability of the polarized light formed by upper polarizer, thus make to be penetrated through lower polaroid 2 (the light transmission shaft direction of upper polarizer 1 is identical with the light transmission shaft direction of lower polaroid 2) by the polarized light of liquid crystal layer, the polarizing light irradiation of injection excites and produces white natural light to quantum dot layer 51, on the white natural light part direct irradiation to lower polaroid 2 produced, another part reflects through reflection horizon 7 and passes quantum dot layer 51 and exposes on lower polaroid 2, this white natural light becomes polarized light through lower polaroid 2, the light of different colours is obtained by the filter action of colored filter, and penetrate from upper polaroid 1, complete the display of image.
Fig. 4 is the principle schematic of sub-pix dark-state display in this display panel, particularly, ambient light (ultraviolet light that UV light source 8 sends) becomes polarized light after upper polarizer 1, sub-pixel unit on array base palte changes the Liquid Crystal Molecules Alignment in region corresponding with this sub-pix in liquid crystal layer 3 by electric field, make it have optical activity, thus the polarizability changed through the polarized light of liquid crystal layer 3, make it turn round to turn 90 degrees, thus cannot polaroid 2 (the light transmission shaft direction of upper polarizer 1 is identical with the light transmission shaft direction of lower polaroid 2) under printing opacity, thus white natural light cannot be produced by excitation quantum point layer 51, also just cannot human eye be made to see the image that sub-pix forms light reflection.
Fig. 5 is the schematic diagram of another display panel that embodiment of the present invention provides, this display panel comprises polaroid 1, lower polaroid 2 and the liquid crystal layer 3 be arranged between described upper polaroid 1 and described lower polaroid 2 and array base palte 4, described array base palte 4 is provided with multiple pixel cell, each described pixel cell has the sub-pixel unit of multiple display different colours, wherein, this display panel also comprises and is arranged on the quantum dot layer 52 of described lower polaroid 2 away from described liquid crystal layer 3 side, described quantum dot layer 52 comprises the light-emitting zone 521 corresponding to each described sub-pixel unit, each light-emitting zone sends the light corresponding to described sub-pixel unit color under the exciting of described ambient light.
Wherein, light-emitting zone on above-mentioned quantum dot layer 52 can comprise emitting red light region, green emitting region and blue-light-emitting region, emitting red light region can be formed by red quantum point material, corresponding with red sub-pixel unit, green emitting region can be formed by green quanta point material, corresponding with green sub-pixels unit, blue-light-emitting region can be formed by blue light quantum point material, corresponding with blue subpixels unit, preferably, above-mentioned light-emitting zone can also comprise white luminous region.
Preferably, in order to reduce mutually to impact between adjacent two light-emitting zones, between arbitrary neighborhood two light-emitting zones of described quantum dot layer, black matrix 522 is also provided with.
Preferably, in order to improve the utilization factor of light, described quantum dot layer is also provided with reflection horizon 7 away from described lower polaroid side.
Wherein, the different light-emitting zones on quantum dot layer 52 can be formed by high molecular polymer grid and the quantum dot be dispersed in high molecular polymer grid.Quantum dot is generally spherical or class is spherical, is made up, stable diameter is at the nano particle of 2 ~ 20nm of semiconductor material (being usually made up of II B ~ VI B or IIIB ~ VB element).Quantum dot is the aggregate of atom on nanoscale and molecule, both can be made up of a kind of semiconductor material, as being made up of II, VI race element (as CdS, CdSe, CdTe, ZnSe etc.) or III, V group element (as InP, InAs etc.), also can be made up of two or more semiconductor material.Usually select zinc sulphide (ZnS) nanometer semiconductor compounds as main quanta point material.Certain high molecular polymer grid can also be replaced by other material, does not limit at this.
Because quantum dot can produce the light of multiple color, and the color of light depends on the size of quantum dot, in selection zinc sulphide (ZnS) nanometer semiconductor compounds as in quanta point material situation, during red-emitting, i.e. emitting red light region, can select particle diameter to be zinc sulphide (ZnS) nanometer semiconductor compounds of 10-12nm; During transmitting green light, i.e. green emitting region, can select particle diameter to be the zinc sulfide nano semiconducting compound of 7-8nm; When launching blue light, i.e. blue-light-emitting region, can select particle diameter to be the zinc sulfide nano semiconducting compound of 4-5nm.Therefore, the quantum dot be scattered in high molecular polymer network can be by commaterial, the quantum dot composition of same size, also can be made up of the quantum dot of different materials, as long as control each quantum dot in the quantum dot of this material Assurance of Size its by the monochromatic light sending corresponding sub-pixel unit color after ultraviolet excitation, do not limit at this.
The display panel that embodiment of the present invention provides, the displaying principle of its sub-pix is substantially identical with the sub-pix displaying principle of the display panel shown in Fig. 2, its difference is, quantum dot layer in display panel shown in Fig. 2 only can send white light under the exciting of ambient light, different colors is realized by colored filter, and the quantum dot layer in the display panel that present embodiment provides can not only be luminous under the exciting of ambient light, the light corresponding to each sub-pixel unit color can also be sent, thus do not need colored filter, and then the thickness of display panel can be reduced further.
The display panel that embodiment of the present invention provides by setting gradually quantum dot layer and reflection horizon below lower polaroid, when ambient light is radiated at display panel front (i.e. display surface side), light direct irradiation produces polarized light on upper polarizer, the polarization characteristic of polarized light when the conduction continuation of liquid crystal layer keeps incident, after lower polaroid, keep identical polarization state again and penetrate, and expose on the different light-emitting zones of quantum dot layer, thus excite the monochromatic natural light producing and correspond to sub-pixel unit color, then after reflective layer reflects, pass quantum dot layer again, lower polaroid and upper polarizer, finally penetrate with monochromatic polarized light, form display image, realize reflective display.Light source is through quantum dot layer simultaneously, and the colour gamut of display can also be made to increase, and strengthens display effect.
See the schematic diagram that Fig. 6, Fig. 6 are a kind of display device that embodiment of the present invention provides, this display device comprises light source 20 and above-mentioned arbitrary display panel 10, and wherein, light source 20 is for providing the ambient light of described display panel 10.Such as, this light source can be ultraviolet source or blue light source, preferably, can be ultraviolet source,
Wherein, described light source 20 can be positioned at the display side of described display panel.When this display device needs display, the illumination that light source 20 can be made to send is incident upon the display surface of display panel, thus realizes the display of display panel.
Wherein, above-mentioned light source can be LED, such as, can be UV LED (ultraviolet LED), preferably, also can add secondary optical lens at UV LED, thus can improve the homogeneity of UV LED luminescence, and then improves the display effect of display panel.
Display device in the present embodiment, light source and beholder can be positioned at the homonymy of display panel, without the need to arranging backlight after display panel, can reduce the thickness of whole display device, can also alleviate the overall weight of display device, realize lightening.Need to be opened by ultraviolet source during display, on a display panel, excitation quantum point, when ultraviolet source is closed, owing to not having ultraviolet excitation quantum dot to show, can protect displaying contents, have certain confidentiality UV-irradiation.
Display device in the present embodiment can be: any product or parts with Presentation Function such as Electronic Paper, mobile phone, panel computer, televisor, notebook computer, digital album (digital photo frame), navigating instrument.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (11)
1. a display panel, comprise polaroid, lower polaroid and the liquid crystal layer be arranged between described upper polaroid and described lower polaroid and array base palte, described array base palte is provided with multiple pixel cell, each described pixel cell comprises the sub-pixel unit of multiple display different colours, it is characterized in that, also comprise and be arranged on the quantum dot layer of described lower polaroid away from described liquid crystal layer side, described quantum dot layer is by the stimulated luminescence of ambient light.
2. display panel as claimed in claim 1, it is characterized in that, described quantum dot layer excites the light sent to be white light by described ambient light.
3. as claimed in claim 1, it is characterized in that, between described upper polaroid and described lower polaroid, be also provided with colored filter, described colored filter is provided with the filtered region corresponding to each described sub-pixel unit color.
4. display panel as claimed in claim 3, is characterized in that, described colored filter is also provided with black matrix between arbitrary neighborhood two filtered region.
5. display panel as claimed in claim 1, it is characterized in that, described quantum dot layer comprises the light-emitting zone corresponding to each described sub-pixel unit, and each light-emitting zone sends the light corresponding to described sub-pixel unit color under the exciting of described ambient light.
6. display panel as claimed in claim 5, is characterized in that, be also provided with black matrix between arbitrary neighborhood two light-emitting zones of described quantum dot layer.
7. the display panel as described in as arbitrary in claim 1-6, it is characterized in that, described quantum dot layer is also provided with reflection horizon away from described lower polaroid side.
8. a display device, is characterized in that, comprise light source and as arbitrary in claim 1-7 as described in display panel, described light source is for providing the ambient light of described display panel.
9. display device as claimed in claim 8, it is characterized in that, described light source is positioned at the display side of described display panel.
10. display device as claimed in claim 8, it is characterized in that, described light source comprises LED and secondary optical lens.
11. display device as claimed in claim 8, it is characterized in that, described light source is ultraviolet source.
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| CN201410594234.3A CN104360536B (en) | 2014-10-29 | 2014-10-29 | Display panel and display device |
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| CN201410594234.3A CN104360536B (en) | 2014-10-29 | 2014-10-29 | Display panel and display device |
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| CN104880849A (en) * | 2015-06-01 | 2015-09-02 | 武汉华星光电技术有限公司 | Display panel and LCD (Liquid Crystal Display) |
| CN105093674A (en) * | 2015-07-24 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN105183229A (en) * | 2015-09-11 | 2015-12-23 | 京东方科技集团股份有限公司 | Display panel, touch control display panel and manufacturing method thereof and display device |
| CN105182606A (en) * | 2015-08-18 | 2015-12-23 | 友达光电股份有限公司 | Display device |
| CN105403945A (en) * | 2016-01-04 | 2016-03-16 | 京东方科技集团股份有限公司 | Polarizer, manufacturing method thereof, and display panel |
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| WO2017031791A1 (en) * | 2015-08-27 | 2017-03-02 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN107175815A (en) * | 2017-07-13 | 2017-09-19 | 上海天马微电子有限公司 | A kind of transmissive liquid crystal panel and 3D printing device |
| CN107991811A (en) * | 2018-01-29 | 2018-05-04 | 广东小天才科技有限公司 | Front light-source liquid crystal display and its manufacture method |
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