CN203414701U - Display substrate and display device - Google Patents
Display substrate and display device Download PDFInfo
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- CN203414701U CN203414701U CN201320456447.0U CN201320456447U CN203414701U CN 203414701 U CN203414701 U CN 203414701U CN 201320456447 U CN201320456447 U CN 201320456447U CN 203414701 U CN203414701 U CN 203414701U
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Abstract
The utility model provides a display substrate and a display device, which belong to the technical field of polymer dispersed liquid crystal display, and can solve the problem that an existing polymer dispersed liquid crystal display device is bad in display effect in a dark environment, or cannot realize transparent display. The display substrate disclosed by the utility model comprises a base, and the base is made of scattering particle composite transparent materials; at least one side face of the base is provided with a light-emitting unit, and the light-emitting unit is used for emitting light to the base. The display device disclosed by the utility model comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first and second substrates are butt-jointed, the first substrate is the display substrate, and the liquid crystal layer is arranged between the first substrate and the second substrate. The display substrate and display device disclosed by the utility model are applicable to a liquid crystal display device, especially a transparently displayed polymer dispersed liquid crystal display device.
Description
Technical field
The utility model belongs to Polymer Dispersed Liquid Crystal display technique field, is specifically related to a kind of display base plate, display device.
Background technology
Polymer Dispersed Liquid Crystal (PDLC, Polymer Dispersed Liquid Crystal) is a kind of by the compound substance that after prepolymer monomer and liquid crystal blending, polymerization obtains, and wherein liquid crystal droplet is dispersed in macromolecule matrix.During without electric field, the liquid crystal molecule random orientation in liquid crystal droplet, can produce scattering to light, therefore polymer dispersion liquid crystal material integral body opaque (being in other words frosted state); And liquid crystal molecule can be orientated along specific direction under electric field action, transparent thereby material monolithic becomes.
Due to the above-mentioned characteristic of Polymer Dispersed Liquid Crystal, therefore it is used in display device.As shown in Figure 1, similar with liquid crystal indicator (LCD), Polymer Dispersed Liquid Crystal display device comprises mutually equally to the first substrate 1 (as array base palte) of box and second substrate 2 (as color membrane substrates), between two substrates, accompany polymer dispersed liquid crystal film 3, polymer dispersed liquid crystal film 3 is enclosed between two substrates by sealed plastic box 5, by the electric field producing between two substrates, can control the transmitance of polymer dispersed liquid crystal film 3 diverse locations, thereby realize, show; But different from conventional liquid crystal indicator, Polymer Dispersed Liquid Crystal display device does not need polaroid; Meanwhile, Polymer Dispersed Liquid Crystal display device can be used to transparent demonstration, therefore can not comprise backlight.
Inventor finds that in prior art, at least there are the following problems: the Polymer Dispersed Liquid Crystal display device for transparent demonstration does not have backlight, rely on surround lighting to show, therefore when environment is darker or complete when black, its display effect can significantly reduce or cannot show at all; And if backlight is set in Polymer Dispersed Liquid Crystal display device, it again can not be for transparent demonstration, and can cause the problems such as device thickness increase, complex structure, cost raising.
Utility model content
Technical problem to be solved in the utility model comprises, for existing Polymer Dispersed Liquid Crystal display device or when environment is darker display effect bad, or can not realize the problem of transparent demonstration, provide a kind of transparent demonstration of carrying out, simultaneously also well display base plate and device of display effect when environment is darker.
The technical scheme that solution the utility model technical matters adopts is a kind of display base plate, comprises substrate, and
Described substrate is made by scattering particle composite transparent material;
At least one side of described substrate is provided with luminescence unit, and described luminescence unit is for basad luminous.
Wherein, " display base plate " refers to that it can be the different forms such as array base palte, color membrane substrates for box being become to any one of substrate of display device; Except substrate and luminescence unit, display base plate also comprises is located at suprabasil other display structures, such as color filter film, public electrode, gate line, data line, pixel electrode etc., the concrete form of display structure can be according to the difference of display base plate type and difference is not described in detail at this." scattering particle composite transparent material " is a kind of known compound substance, and its matrix is transparent (as resin, glass etc.) material, and in matrix, be evenly distributed with to light rise scattering process, size in nanometer scale the scattering particle to micron dimension.Concrete, " scattering particle composite transparent material " is preferably " scattering particle composite transparent organic resin (claiming again Nanocomposites transparent organic resin) ", it comprises metal scattering particle organic resin, metal oxide scattering particle organic resin, nonmetal oxide scattering particle organic resin etc., its matrix is transparent organic resin material, and in matrix, is evenly distributed with scattering particle; Conventionally its matrix material can be PMMA (polymethylmethacrylate), PET (polyethylene terephthalate), PC (polycarbonate) etc.; And the material of scattering particle can be metal oxide (as titania), nonmetal oxide (as silicon dioxide), slaine (as aluminium nitride), rare earth compound (as tin indium oxide) etc.; The particle diameter of these scattering particles can be between 1nm to 1000nm, preferably at 10nm to 500nm; In compound substance, the addition of scattering particle is 10% to 30%(mass percent, lower same) between, be preferably between 15% to 20%.
The substrate of display base plate of the present utility model is made by scattering particle composite transparent material, and its edge is provided with luminescence unit, the light that luminescence unit sends can be scattered particle scattering and inject the liquid crystal layer of display device from display base plate, this display base plate can play the effect of backlight, thereby when environment is darker, display device also can reach good display effect; And when environment is brighter, as long as close luminescence unit, it is transparent that display base plate is still, therefore display device can be carried out transparent demonstration; Meanwhile, when transparent demonstration, scattering particle also can carry out scattering to the light seeing through, and the rising angle of display device is more disperseed, thereby expands the visual angle of display device.
Preferably, described luminescence unit comprises light-emitting diode light bar.
Preferably, described luminescence unit comprises a plurality of light emitting diodes.
Preferably, described LED package is inner in the side of substrate.
Preferably, at least two of described substrate opposite flanks are equipped with described luminescence unit.
Preferably, at least one side of described substrate is provided with for the light reflection from substrate inside is returned to intrabasement reflectance coating.
Obviously, it is based luminous that above-mentioned reflectance coating can not affect luminescence unit, and it should be located on the side that there is no luminescence unit, or be located on the side of luminescence unit but with luminescence unit in diverse location.
Preferably, described scattering particle composite transparent material is any one in metal scattering particle organic resin, metal oxide scattering particle organic resin, nonmetal oxide scattering particle organic resin.
The technical scheme that solution the utility model technical matters adopts is a kind of display device, comprising:
To the first substrate of box and second substrate, wherein, described first substrate is above-mentioned display base plate mutually;
Be located at the liquid crystal layer between described first substrate and second substrate.
Because display device of the present utility model has above-mentioned display base plate, therefore it can carry out transparent demonstration, and display effect is also fine when environment is darker.
Preferably, described liquid crystal layer is polymer dispersed liquid crystal film.
Preferably, described first substrate is array base palte, and described second substrate is color membrane substrates;
Or
Described first substrate is array base palte, and described first substrate comprises color filter film, and described color filter film is positioned at the substrate of first substrate near a side of liquid crystal layer;
Or
Described second substrate is array base palte, and described first substrate comprises color filter film, and described color filter film is positioned at the substrate of first substrate near a side of liquid crystal layer;
Or
Described second substrate is array base palte, and described second substrate comprises color filter film.
The utility model is applicable to liquid crystal indicator, the Polymer Dispersed Liquid Crystal display device of especially transparent demonstration.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of existing Polymer Dispersed Liquid Crystal display device;
Fig. 2 is a kind of Polymer Dispersed Liquid Crystal display device of embodiment 2 of the present utility model cross-sectional view when luminescence unit is opened;
Fig. 3 is a kind of Polymer Dispersed Liquid Crystal display device of embodiment 2 of the present utility model cross-sectional view when luminescence unit is closed;
Fig. 4 is the plan structure schematic diagram of a kind of Polymer Dispersed Liquid Crystal display device of embodiment 2 of the present utility model;
Fig. 5 is the cross-sectional view of the another kind of Polymer Dispersed Liquid Crystal display device of embodiment 2 of the present utility model;
Wherein Reference numeral is: 1, first substrate; 11, substrate; 111, scattering particle; 2, second substrate; 3, polymer dispersed liquid crystal film; 4, color filter film; 5, sealed plastic box; 6, luminescence unit; 61, luminescence unit circuit.
Embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
As shown in Figures 2 to 5, the present embodiment provides a kind of display base plate, and it comprises substrate 11, and described substrate 11 consists of scattering particle composite transparent material.
The display base plate of the present embodiment can form display device to box with other display base plate, and be provided with liquid crystal layer between two display base plates, in embodiment of the present utility model, using polymer dispersed liquid crystal film 3 as the example of liquid crystal layer, certainly, is also feasible if use other liquid crystal layer.
" scattering particle composite transparent material " is a kind of known compound substance, and its matrix is transparent (as resin, glass etc.) material, and in matrix, be evenly distributed with to light rise scattering process, size in nanometer scale the scattering particle to micron dimension.
Preferably, " scattering particle composite transparent material " be in metal scattering particle organic resin, metal oxide scattering particle organic resin, nonmetal oxide scattering particle organic resin any one or multiple, these materials are referred to as " scattering particle composite transparent organic resin (claiming again Nanocomposites transparent organic resin) ", its matrix is transparent organic resin material, and in matrix, is evenly distributed with scattering particle; Conventionally its matrix material can be PMMA (polymethylmethacrylate), PET (polyethylene terephthalate), PC (polycarbonate) etc.; And the material of scattering particle can be metal oxide (as titania), nonmetal oxide (as silicon dioxide), slaine (as aluminium nitride), rare earth compound (as tin indium oxide) etc.; The particle diameter of these scattering particles can be between 1nm to 1000nm, preferably at 10nm to 500nm; In compound substance, the addition of scattering particle is 10% to 30%(mass percent, lower same) between, be preferably between 15% to 20%.
Certainly, if adopt other known scattering particle composite transparent materials, be also feasible, such as the matrix of compound substance, also can be other materials such as glass.
Meanwhile, at least one side of substrate 11, be also provided with for basad 11 luminous luminescence units 6.This luminescence unit 6 is can be from the side basad 11 luminous, as shown in Figure 2, owing to containing a large amount of scattering particle 111 in substrate 11, therefore these scattering particles 111 can be to coming the light of selfluminous cell 6 to carry out scattering, wherein part scattered light is understood the polymer dispersed liquid crystal film 3 in directive display device, and realizes demonstration by the optical filtering of polymer dispersed liquid crystal film 3.That is to say, in display device, the display base plate reality of the present embodiment can play the effect of " backlight ", thereby for making display device can reach good display effect when environment is darker.Meanwhile, if when environment is brighter, can close luminescence unit 6, like this, as shown in Figure 3, display device can show by surround lighting again, thereby realizes the effect of transparent demonstration.Further, owing to being provided with scattering particle 111, so also can there is scattering during by substrate 11 in surround lighting to a certain extent, so just makes the rising angle of the light that penetrates from display device more disperse, thereby also expanded the visual angle of display device.
Wherein, the thickness of substrate 11 can be according to the size decision of display base plate, and for example the thickness of the substrate 11 of large scale display base plate preferably can be between 2～3 millimeters.
Visible, in order to guarantee enough light, enter from the side substrate 11, simultaneously also in order to guarantee that it can play enough dispersion effects, therefore the thickness of this substrate 11 can not be too thin; Meanwhile, in order transparent demonstration not to be exerted an influence, therefore substrate 11 can not be too thick.Find after deliberation, the thickness range of above-mentioned 2～3 millimeters is proper, both can guarantee dispersion effect, can not cause harmful effect to transparent demonstration again.
Preferably, luminescence unit 6 is light emitting diode (LED) lamp bar.
Light-emitting diode light bar comprises printed-wiring board (PWB) and be located at a plurality of light emitting diodes on printed-wiring board (PWB), and it is often used in backlight.In light-emitting diode light bar, each light emitting diode is all fixed on printed-wiring board (PWB), therefore needn't be fixed each light emitting diode respectively, need only fixedly light-emitting diode light bar, thereby it can make the simple in structure of display device.
Preferably, luminescence unit 6 also can comprise a plurality of light emitting diodes.
That is to say, also can use a plurality of independent light emitting diodes as luminescence unit 6.
Wherein, preferred, each light emitting diode can be bonded and fixed at substrate 11 sides; For example, can use polyurethane adhesive or epoxide-resin glue directly light emitting diode to be bonded in to (and the circuit 61 of light emitting diode can be located at this display base plate in the region beyond the sealed plastic box 5 on second substrate 2 surfaces of box) on substrate 11 sides.This independent light emitting diode dirigibility is higher, can be as required outside the diverse location of each side of substrate 11, arbitrarily arranges.
Or as another kind of optimal way, each LED package is inner in the side of substrate 11.For example, also can on the side of substrate 11, groove be set, and each light emitting diode is located in groove, again each LED package be got up afterwards, to improve display base plate globality.。
Preferably, outside at least two opposite flanks of substrate 11, be equipped with luminescence unit 6.That is to say, as shown in Figures 2 to 4, outside two opposite flanks of preferred substrate 11, be equipped with luminescence unit 6.
Obviously, when the interior transmission of substrate 11, can there is loss in light, therefore from luminescence unit 6, the position light intensity away from is more more weak in substrate 11, like this, may cause the light intensity penetrating from substrate 11 diverse locations uneven, and by luminescence unit 6 is set outside two opposite flanks of substrate 11 simultaneously, can make the light intensity of both sides luminescence unit 6 mutually compensate, guarantee light-emitting uniformity.
Preferably, at least one side of substrate 11 is provided with for the light reflection from substrate 11 inside is returned to the reflectance coating in substrate 11.
Obviously, above-mentioned reflectance coating can not affect the luminous of luminescence unit 6 basad 11, and it should be located on the side that there is no luminescence unit 6, or be located on the side of luminescence unit 6 but with luminescence unit 6 in diverse location.
By reflectance coating is set, the light that is mapped to this side can be reflected back in substrate 11, improve the efficiency of light energy utilization.
Embodiment 2:
As shown in Figures 2 to 5, the present embodiment provides a kind of display device, and it comprises mutual to the first substrate 1 of box and second substrate 2, is provided with liquid crystal layer between two substrates.
Wherein, the display base plate that first substrate 1 is above-described embodiment, the namely substrate 11 of first substrate is made by scattering particle composite transparent organic resin, and is provided with luminescence unit 6 outside its side.And second substrate 2 can be conventional display base plate, its substrate is made by materials such as organic glass, polyethylene terephthalates conventionally, and the thickness of second substrate substrate is conventionally in 0.5mm left and right.
Because the display device of the present embodiment has above-mentioned display base plate, therefore it can carry out transparent demonstration, and display effect is also fine when environment is darker.
Preferably, described liquid crystal layer is polymer dispersed liquid crystal film 3.
Use the advantage of polymer dispersed liquid crystal film 3 to be that it does not need polaroid can realize demonstration.Certainly, if use conventional liquid crystal layer, be also feasible, just need to set up corresponding polaroid (polaroid on first substrate 1 need to be located at it near a side of liquid crystal layer).
The concrete form of the two substrates of the present embodiment display device has multiple different mode, as long as can realize demonstration.Wherein, due to when luminescence unit 6 is luminous, first substrate 1 plays backlight effect, so time second substrate 2 should be positioned at the bright dipping side of display device, to guarantee that the light penetrating from first substrate 1 can show required content after second substrate 2; And when transparent demonstration, because showing, it relies on surround lighting, so time display device bright dipping side, light inlet side be relative, there is no strict difinition, but unified when luminous with luminescence unit 6, therefore also can second substrate 2 place sides the bright dipping side that is display device, and the light inlet side that first substrate 1 place side is display device.
Preferably, as a kind of mode of the present embodiment, first substrate 1 is array base palte, and second substrate 2 is color membrane substrates.That is to say, can be in first substrate 1, to be provided with the structures such as gate line, data line, thin film transistor (TFT), pixel electrode, and color filter film is located in second substrate 2 and (in figure, is not demonstrated).
Preferably, as shown in Figure 5, as the another kind of form of the present embodiment display device, first substrate 1 can be array base palte, and a side of substrate 11 liquid crystal layers of first substrate is provided with color filter film 4.That is to say, also can take color filter film 4 to be also located at the mode (COA, Color Filter on Array) in array base palte; But now for the light that guarantees to be sent by the substrate 11 of first substrate can pass through color filter film 4, therefore color filter film 4 should be positioned at the side (between the substrate 11 and liquid crystal layer of first substrate) near liquid crystal layer.
Preferably, as the another kind of form of the present embodiment display device, second substrate 2 is array base palte, and the substrate 1 of first substrate is provided with color filter film near a side of liquid crystal layer.That is to say, also can second substrate 2 be array base palte (being about to the structures such as gate line, data line, thin film transistor (TFT), pixel electrode is located in second substrate 2), and color filter film is located in first substrate 1 to the side near liquid crystal layer, thereby guarantee that by the substrate 11 of first substrate, sending light can pass through color filter film.
Preferably, as the another kind of form of the present embodiment display device, second substrate 2 is array base palte, and second substrate 2 comprises color filter film.That is to say, also can second substrate 2 be array base palte, color filter film is also located in second substrate 2 and (can be positioned at any side) simultaneously, because send light from the substrate 11 of first substrate, will inevitably pass through second substrate 2 (namely passing through color filter film).
In a word, no matter the concrete form of first substrate 1 and second substrate 2 how, but as long as this display device both can realize transparent demonstration (guaranteeing can produce the electric field that drives liquid crystal layer between two substrates), can realize again the demonstration (can guarantee that the luminous energy being penetrated by the substrate 11 of first substrate is through liquid crystal layer and color filter film) of using luminescence unit 6, it is exactly feasible.
Be understandable that, above embodiment is only used to principle of the present utility model is described and the illustrative embodiments that adopts, yet the utility model is not limited to this.For those skilled in the art, in the situation that not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.
Claims (10)
1. a display base plate, comprises substrate, it is characterized in that,
Described substrate is made by scattering particle composite transparent material;
At least one side of described substrate is provided with luminescence unit, and described luminescence unit is for basad luminous.
2. display base plate according to claim 1, is characterized in that,
Described luminescence unit comprises light-emitting diode light bar.
3. display base plate according to claim 1, is characterized in that,
Described luminescence unit comprises a plurality of light emitting diodes.
4. display base plate according to claim 3, is characterized in that,
Described LED package is inner in the side of substrate.
5. display base plate according to claim 1, is characterized in that,
At least two opposite flanks of described substrate are equipped with described luminescence unit.
6. display base plate according to claim 1, is characterized in that,
At least one side of described substrate is provided with for the light reflection from substrate inside is returned to intrabasement reflectance coating.
7. according to the display base plate described in any one in claim 1 to 6, it is characterized in that,
Described scattering particle composite transparent material is any one in metal scattering particle organic resin, metal oxide scattering particle organic resin, nonmetal oxide scattering particle organic resin.
8. a display device, is characterized in that, comprising:
To the first substrate of box and second substrate, wherein, described first substrate is the display base plate described in any one in claim 1 to 7 mutually;
Be located at the liquid crystal layer between described first substrate and second substrate.
9. display device according to claim 8, is characterized in that,
Described liquid crystal layer is polymer dispersed liquid crystal film.
10. display device according to claim 8 or claim 9, is characterized in that,
Described first substrate is array base palte, and described second substrate is color membrane substrates;
Or
Described first substrate is array base palte, and described first substrate comprises color filter film, and described color filter film is positioned at the substrate of first substrate near a side of liquid crystal layer;
Or
Described second substrate is array base palte, and described first substrate comprises color filter film, and described color filter film is positioned at the substrate of first substrate near a side of liquid crystal layer;
Or
Described second substrate is array base palte, and described second substrate comprises color filter film.
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| CN201320456447.0U CN203414701U (en) | 2013-07-29 | 2013-07-29 | Display substrate and display device |
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| CN201320456447.0U CN203414701U (en) | 2013-07-29 | 2013-07-29 | Display substrate and display device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015158049A1 (en) * | 2014-04-15 | 2015-10-22 | 京东方科技集团股份有限公司 | Display apparatus and manufacturing method therefor |
| CN105866997A (en) * | 2016-06-01 | 2016-08-17 | 深圳市华星光电技术有限公司 | Lcd display |
| CN107422532A (en) * | 2017-08-16 | 2017-12-01 | 京东方科技集团股份有限公司 | A kind of transparent display panel, its preparation method and display system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015158049A1 (en) * | 2014-04-15 | 2015-10-22 | 京东方科技集团股份有限公司 | Display apparatus and manufacturing method therefor |
| US9691828B2 (en) | 2014-04-15 | 2017-06-27 | Boe Technology Group Co., Ltd. | Display apparatus having thin films including nanoparticles |
| US10233539B2 (en) | 2014-04-30 | 2019-03-19 | Boe Technology Group Co., Ltd. | Vapor deposition apparatus |
| JP2020079967A (en) * | 2015-12-07 | 2020-05-28 | 株式会社ジャパンディスプレイ | Electronic apparatus |
| CN105866997A (en) * | 2016-06-01 | 2016-08-17 | 深圳市华星光电技术有限公司 | Lcd display |
| JP2018021974A (en) * | 2016-08-01 | 2018-02-08 | 株式会社ジャパンディスプレイ | Display device |
| JP2021140161A (en) * | 2016-08-01 | 2021-09-16 | 株式会社ジャパンディスプレイ | Display device |
| JP7349469B2 (en) | 2016-08-01 | 2023-09-22 | 株式会社ジャパンディスプレイ | display device |
| CN107422532A (en) * | 2017-08-16 | 2017-12-01 | 京东方科技集团股份有限公司 | A kind of transparent display panel, its preparation method and display system |
| CN107797338A (en) * | 2017-11-30 | 2018-03-13 | 深圳市华星光电技术有限公司 | A kind of side entering type field sequence LCD device and liquid crystal display device |
| CN107797338B (en) * | 2017-11-30 | 2021-03-30 | Tcl华星光电技术有限公司 | Lateral-entry field-sequential liquid crystal display and liquid crystal display device |
| CN108693597A (en) * | 2018-08-01 | 2018-10-23 | 京东方科技集团股份有限公司 | Light guide structure and its manufacturing method, backlight module, liquid crystal display device |
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