CN108831304A - A kind of display panel and display device - Google Patents

A kind of display panel and display device Download PDF

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Publication number
CN108831304A
CN108831304A CN201810643054.8A CN201810643054A CN108831304A CN 108831304 A CN108831304 A CN 108831304A CN 201810643054 A CN201810643054 A CN 201810643054A CN 108831304 A CN108831304 A CN 108831304A
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CN
China
Prior art keywords
polaroid
light
display panel
display
display unit
Prior art date
Application number
CN201810643054.8A
Other languages
Chinese (zh)
Inventor
程爽
牛晶华
王湘成
朱晴
刘银河
王建云
林君
Original Assignee
上海天马有机发光显示技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海天马有机发光显示技术有限公司 filed Critical 上海天马有机发光显示技术有限公司
Priority to CN201810643054.8A priority Critical patent/CN108831304A/en
Publication of CN108831304A publication Critical patent/CN108831304A/en

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3058Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles

Abstract

The present invention provides a kind of display panel and display devices, are related to field of display technology, to improve the contrast of picture shown by display panel.The display panel includes:Display unit, the first polaroid and the second polaroid, display unit include the first light-emitting surface and the second light-emitting surface being oppositely arranged;First polaroid is located at side of first light-emitting surface far from display unit, and the first polaroid is wire grating polaroid;Second polaroid is located at side of second light-emitting surface far from display unit;First polaroid is vertical with the polarization direction of the second polaroid.Above-mentioned display panel shows for realizing picture.

Description

A kind of display panel and display device

【Technical field】

The present invention relates to field of display technology more particularly to a kind of display panel and display devices.

【Background technique】

Increasingly developed with display technology, various new techniques continue to bring out.Wherein, two-side transparent display technology is one Item breaks through the technology of display field design limitation, the very big concern by researcher.Currently, the occasion in such as exhibition room museum is logical It can often wish to be arranged two-side transparent display screen so that the crowd of dealing watches.When the work of two-side transparent display screen, it is located at display The viewer of screen two sides can see the display picture on display screen, also, the viewer for being located at any side of display screen For, the display picture on display screen can not only be watched, while the scape after display screen can also be watched through display screen As being greatly enriched the visual experience of viewer.

But current two-side transparent display screen is when being shown, for being located at the viewer of any side of display screen For, since its eye can receive the environment light penetrated from the other side of display screen simultaneously, viewer is caused to be watched The contrast of the display picture of display screen reduces.

【Summary of the invention】

In view of this, the embodiment of the present invention provides a kind of display panel and display device, to improve shown by display panel The contrast of picture.

On the one hand, the embodiment of the invention provides a kind of display panel, the display panel includes:

Display unit, the display unit include the first light-emitting surface and the second light-emitting surface being oppositely arranged;

First polaroid, positioned at the side of first light-emitting surface far from the display unit, first polaroid is Wire grating polaroid;

Second polaroid, positioned at the side of second light-emitting surface far from the display unit;

First polaroid is vertical with the polarization direction of second polaroid.

On the other hand, the embodiment of the invention provides a kind of display device, the display device includes above-mentioned display surface Plate.

The embodiment of the present invention passes through in the side of the first light-emitting surface and the second light-emitting surface far from display unit of display panel The first polaroid and the second polaroid is respectively set, and sets vertical for the polarization direction of the first polaroid and the second polaroid Directly, it in this way, entering display panel in environment light, is transmitted from a side of display panel to the observer for being located at the display panel other side During, it will be able to successively by orthogonal first polaroid in polarization direction and the second polaroid, pass through the first polarisation The filter action of piece and the second polaroid makes the outgoing strength reduction of environment light, improves light and environment that display unit issues The phenomenon that light mixes improves the contrast of picture shown by display panel.

Also, the embodiment of the present invention is inclined by selecting the wire grating with wire grating structure formed by metal material Incident environment light can not only be become linearly polarized light, reduce the light intensity of the environment light of outgoing by mating plate as the first polaroid, Moreover, environment light after exposing to the wire grating polaroid, partially can not also will be filtered by the reflection of metal material Light reflex to incident side, to be further reduced the intensity of the environment light penetrated from display panel, improve display picture Contrast.

【Detailed description of the invention】

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural schematic diagram of the display panel shown in the prior art for two-side transparent;

Fig. 2 is the schematic diagram of display panel provided by the embodiment of the present invention;

Fig. 3 is that the plane of the portion of the wire grating polaroid in display panel provided by the embodiment of the present invention is shown It is intended to;

Fig. 4 is schematic cross-section of the Fig. 3 along CC ';

Fig. 5 is the schematic diagram of another kind display panel provided by the embodiment of the present invention;

Fig. 6 is the schematic diagram of another display panel provided in an embodiment of the present invention;

Fig. 7 is the schematic diagram of display device provided by the embodiment of the present invention.

【Specific embodiment】

For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing It states.

It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its Its embodiment, shall fall within the protection scope of the present invention.

The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the" It is also intended to including most forms, unless the context clearly indicates other meaning.

It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate There may be three kinds of relationships, for example, A and/or B, can indicate:Individualism A, exists simultaneously A and B, individualism B these three Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

It will be appreciated that though polaroid may be described in embodiments of the present invention using term first, second etc., but this A little polaroids should not necessarily be limited by these terms.These terms are only used to for polaroid being distinguished from each other out.For example, not departing from the present invention In the case where scope of embodiments, the first polaroid can also be referred to as the second polaroid, and similarly, the second polaroid can also be by Referred to as the first polaroid.

As shown in FIG. 1, FIG. 1 is the structural schematic diagrams for being used for the display panel that two-side transparent is shown in the prior art, this is aobvious Show that panel includes transparent substrate 100 ' and display unit 200 ', in display panel work, the light of the sending of display unit 200 ' Transparent substrate 100 ' can be penetrated, to can watch display image in the two sides of the transparent substrate 100 '.But it is based on This structure, when any side of transparent substrate 100 ' is observed, for example, for being observed at the A ' of position, at this time not The light (in Fig. 1 shown in solid arrow) that only display unit 200 ' issues can reach the observer at the A ' of position, and Environment light (in Fig. 1 shown in dotted arrow) also can pass through transparent substrate 100 ' from the side B ' and reach the observer being located at the A ' of position, Lead to the contrast decline of the display picture of display panel.

Based on this, the embodiment of the invention provides a kind of display panels, as shown in Fig. 2, Fig. 2 provides for the embodiment of the present invention Display panel schematic diagram, wherein the display panel includes display unit 1, the first polaroid 21 and the second polaroid 22.Its In, display unit 1 includes the first light-emitting surface 11 and the second light-emitting surface 12 being oppositely arranged, and the first polaroid 21 is located at first and goes out light Side of the face 11 far from display unit 1, the second polaroid 22 are located at the second side of the light-emitting surface 12 far from display unit 1, and, on The first polaroid 21 is stated as wire grating polaroid, the polarization direction of the first polaroid 21 and the second polaroid 22 is vertical.

When the display panel is shown, display unit 1 shines, and the light that display unit 1 issues goes out light by first Face 11 and the outgoing of the second light-emitting surface 12, watch the observer positioned at 12 two sides of the first light-emitting surface 11 and the second light-emitting surface can Show picture (as shown in position is observed at A and at the B of position in Fig. 2).Also, for being located at the second light-emitting surface 12 far from aobvious For the observer for showing 1 side of unit, by taking the observer being located at the A of position in Fig. 2 as an example, from the first light-emitting surface 11 far from display The incident environment light 3 in the side (i.e. from side where position B in Fig. 2) of unit 1 is in the mistake transmitted to the observer being located at the A of position Cheng Zhong will successively pass through the first polaroid 21 and the second polaroid 22.Specifically, environment light 3 belongs to natural light, perpendicular to biography It broadcasts in the plane in direction, is including multiple vibration sides after the first polaroid 21 it includes the light of multiple direction of vibration To environment light 3 in, only direction of vibration beam projecting identical with the polarization direction of the first polaroid 21.Later, this part Light passes through the second polaroid 22, since the polarization direction of the first polaroid 21 and the second polaroid 22 is vertical, by the After two polaroids 22, above-mentioned direction of vibration light identical with the polarization direction of the first polaroid 21 will be filtered by the second polaroid 22 Fall, that is, it is incident to the environment light 3 of display panel, after the filter action of the first polaroid 21 and the second polaroid 22, so that The strength reduction of the environment light of outgoing.

By the description of the above-mentioned course of work to display panel it is found that the embodiment of the present invention passes through the of display panel The first polaroid 21 and the second polaroid is respectively set far from the side of display unit 1 in one light-emitting surface 11 and the second light-emitting surface 12 22, and set vertical with the polarization direction of the second polaroid 22 for the first polaroid 21, in this way, entering display surface in environment light Plate, and from a side of display panel to be located at the display panel other side observer transmitting during, it will be able to successively pass through Orthogonal first polaroid 21 in polarization direction and the second polaroid 22 pass through the first polaroid 21 and the second polaroid 22 Filter action makes the outgoing strength reduction of environment light, improves the phenomenon that light that display unit 1 issues is mixed with environment light, mentions The contrast of picture shown by high display panel.

Illustratively, as shown in Figure 3 and Figure 4, Fig. 3 is the wire grating in display panel provided by the embodiment of the present invention The floor map of the portion of polaroid, Fig. 4 are schematic cross-section of the Fig. 3 along CC '.Wherein, wire grating polaroid packet A plurality of wire 210 arranged in parallel is included, a plurality of wire 210 arranged in parallel constitutes wire grating structure.Wire grating is inclined The polarization direction of mating plate is the extending direction mutually orthogonal direction with wire 210.Specifically, when light is radiated at metal wire When on grid polaroid, the light wave electric vector along the vibration of 210 extending direction of wire can be by the Electron absorption in wire 210, edge It is penetrated perpendicular to the light wave electric vector of 210 extending direction of wire vibration, to obtain the extension of direction of vibration Yu wire 210 The vertical linearly polarized light in direction.Then, this some light hangs down by the polarization direction of polarization direction and wire grating polaroid It is filtered after the second straight polaroid 22, to reduce the intensity of the environment light through display panel.Optionally, above-mentioned metal Silk 210 can be formed with metal materials such as aluminium or silver.The embodiment of the present invention is formed by selecting by metal materials such as aluminium or silver The wire grating polaroid with wire grating structure as the first polaroid 21, incident environment light can not only be become Linearly polarized light reduces the light intensity of the environment light of outgoing, moreover, environment light passes through gold after exposing to the wire grating polaroid The light not filtered partially can also be reflexed to incident side by the reflection for belonging to material, to be further reduced saturating from display panel The intensity for the environment light crossed improves the contrast of display picture.

Specifically, above-mentioned wire grating polaroid includes first area 211 and the secondth area with continued reference to Fig. 2, Fig. 3 and Fig. 4 Domain 212.First area 211 and display unit 1 are overlapping.And above-mentioned a plurality of wire 210 arranged in parallel is located at first area 211, there is between two wires 210 of arbitrary neighborhood gap.Second area 212 is transmission region.

That is, wire grating polaroid provided in an embodiment of the present invention is only set in position corresponding with display unit 1 Wire grating structure is set, by other overlapping regions are not set as transmission region with display unit 1.In this way, by the metal wire When grid polaroid is used for display panel, as shown in Fig. 2, in the course of work of the display panel, in display panel with the For the corresponding position in one region 211, environment light is inclined in the wire grating of wire grating polaroid and second when passing through herein It is filtered under the action of mating plate, so that the intensity for the environment light being emitted from this portion of display panel be made to be reduced to 0.For aobvious Show that in panel for position corresponding with second area 212, the embodiment of the present invention is by setting transparent area for second area 212 Domain, in this way, environment light intensity when by herein will not reduce, only after the second polaroid 22, by the second polaroid 22 polarization makes direction of vibration beam projecting identical with the polarization direction of the second polaroid 22, and reaching reduces outgoing The effect of the intensity of environment light.Therefore, using the display panel of above-mentioned wire grating polaroid, environment light can flexibly be controlled Outgoing intensity, in this way for be located at any side of the display panel observer for, remain to observe by the display panel To the scene for being located at the other side, that is, on the basis of improving display picture contrast, still ensure that the transparent aobvious of the display panel Show function.

Illustratively, along the extending direction perpendicular to wire, the width w of wire meets 10nm<w<400nm.This hair Bright embodiment is formed with preferably playing to by visible light by approaching the width of wire setting and the wavelength of visible light Environment light filter action, so as to improve display picture contrast.

Illustratively, as shown in figure 5, Fig. 5 is the schematic diagram of another kind display panel provided by the embodiment of the present invention, In, display unit 1 includes first electrode 101, luminescent layer 103 and the second electrode 102 being stacked;First light-emitting surface 11 is located at Side of the first electrode 101 far from luminescent layer 103;Second light-emitting surface 12 is located at one of second electrode 102 far from luminescent layer 103 Side.When the display panel is shown, the effect of voltage of the luminescent layer 103 between first electrode 101 and second electrode 102 Lower to shine, the light of sending is emitted by the first light-emitting surface 11 and the second light-emitting surface 12, to realize double-sided display.

Optionally, as shown in figure 5, along the display panel normal direction, the first polaroid 21, first electrode 101, shine Layer 103, second electrode 102 and the second polaroid 22 are cascading.In this way, in 11 side of the first light-emitting surface of the display panel When with the viewing of 12 side of the second light-emitting surface, the transit dose of the environment light of opposite side can be reduced, to improve shown by display panel The contrast of picture.

Alternatively, as shown in Fig. 2, the first polaroid 21 can also be multiplexed with first electrode 101 by the embodiment of the present invention.Specifically , as shown in Fig. 2, the first area 211 that wire grating is arranged is corresponding with display unit 1, in this way in wire grating polaroid In the display panel, the first polaroid 21 not only acts as the effect of filtering environment light, moreover, being located at the in the first polaroid 21 The wire grating structure in one region 211 can also be used as first electrode 101, during display receive needed for voltage with second electricity Pressure difference is formed between pole 102, luminescent layer 103 is made to shine.The embodiment of the present invention in display panel so set, without additionally setting One layer of structure is set as the first polaroid, the thickness of display panel can be made thinning, is conducive to the slimming design of display panel.

Illustratively, as shown in Fig. 2, above-mentioned display panel further includes underlay substrate 4, display unit 1 is set to underlay substrate 4 Side, underlay substrate 4 is made of clear material, so that the light that display unit 1 issues can be reached not by the underlay substrate The side of display unit 1 is set, realizes double-sided display.Optionally, underlay substrate 4 can select transparent glass or resinous wood Material preparation.

In addition, double-sided display can also carry out in the following way, specifically, as shown in fig. 6, Fig. 6 is that the present invention is implemented The schematic diagram for another display panel that example provides, wherein above-mentioned display unit includes the first display unit 110 and the second display Unit 120, the first display unit 110 are located at the side of underlay substrate 4, and the second display unit 120 is located at the another of underlay substrate 4 Side, the first light-emitting surface 11 are located at the side that the first display unit 110 deviates from underlay substrate 4, and it is aobvious that the second light-emitting surface 12 is located at second Show that unit 120 deviates from the side of underlay substrate 4.First polaroid 21 is located at the first light-emitting surface 11 far from the first display unit 110 Side, the second polaroid 22 be located at the second light-emitting surface 12 far from second display power supply 120 side.It is carried out in the display panel When display, the light that the first display unit 110 issues is emitted by the first light-emitting surface 11, the light that the second display unit 120 issues Line is emitted by the second light-emitting surface 12, to realize double-sided display.No matter and going out in 11 place side of the first light-emitting surface or second When 12 place side of smooth surface is observed, pass through from the environment light of opposite side incidence strong after the first polaroid 21 and the second polaroid 22 Degree reduces, and can be improved the contrast of picture shown by display panel.

The embodiment of the present invention also provides a kind of display device, as shown in fig. 7, Fig. 7 is display provided in an embodiment of the present invention The schematic diagram of device, the display device further include above-mentioned display panel 100.Wherein, the specific structure of display panel 100 has been It is described in detail in the above-described embodiments, details are not described herein again.Certainly, display device shown in Fig. 7 is only to illustrate to say Bright, which can be any with aobvious such as mobile phone, tablet computer, laptop, electric paper book or television set Show the electronic equipment of function.

Display device provided in an embodiment of the present invention passes through the first light-emitting surface 11 and the second light-emitting surface 12 in display panel Side far from display unit 1 is respectively set the first polaroid 21 and the second polaroid 22, and by the first polaroid 21 and second The polarization direction of polaroid 22 is set as vertically, in this way, enter display panel in environment light, from a side of display panel to being located at During observer's transmitting of the display panel other side, it will be able to successively by orthogonal first polaroid in polarization direction 21 and second polaroid 22 the outgoing intensity of environment light made by the filter action of the first polaroid 21 and the second polaroid 22 It reduces, improves the phenomenon that light that display unit 1 issues is mixed with environment light, improve the comparison of picture shown by display panel Degree.

Also, the embodiment of the present invention is inclined by selecting the wire grating with wire grating structure formed by metal material Incident environment light can not only be become linearly polarized light, reduce the light of the environment light of outgoing by mating plate as the first polaroid 21 It by force, can also will be partially not by mistake by the reflection of metal material moreover, environment light is after exposing to the wire grating polaroid The light of filter reflexes to incident side, to be further reduced the intensity of the environment light penetrated from display panel, improves display picture Contrast.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.

Claims (9)

1. a kind of display panel, which is characterized in that the display panel includes:
Display unit, the display unit include the first light-emitting surface and the second light-emitting surface being oppositely arranged;
First polaroid, positioned at the side of first light-emitting surface far from the display unit, first polaroid is metal Wiregrating polaroid;
Second polaroid, positioned at the side of second light-emitting surface far from the display unit;
First polaroid is vertical with the polarization direction of second polaroid.
2. display panel according to claim 1, which is characterized in that the display unit includes the first electricity being stacked Pole, luminescent layer and second electrode;
First light-emitting surface is located at side of the first electrode far from the luminescent layer;
Second light-emitting surface is located at side of the second electrode far from the luminescent layer.
3. display panel according to claim 2, which is characterized in that along the normal direction of the display panel, described One polaroid, the first electrode, the luminescent layer, the second electrode and second polaroid are cascading.
4. display panel according to claim 2, which is characterized in that first polaroid is multiplexed with first electricity Pole.
5. display panel according to claim 1, which is characterized in that the wire grating polaroid include first area and Second area;
The first area and the display unit are overlapping;The first area is provided with multiple wires arranged in parallel;Appoint Anticipating has gap between two neighboring wire;
The second area is transmission region.
6. display panel according to claim 5, which is characterized in that along the extending direction perpendicular to the wire, institute The width w for stating wire meets 10nm<w<400nm.
7. display panel according to claim 1-6, which is characterized in that the display panel further includes substrate base Plate, the display unit are set to the side of the underlay substrate;The underlay substrate is made of clear material.
8. display panel according to claim 7, which is characterized in that the display unit includes the first display unit and the Two display units, first display unit are located at the side of the underlay substrate, and second display unit is located at the lining The other side of substrate;
First light-emitting surface is located at the side that first display unit deviates from the underlay substrate;
Second light-emitting surface is located at the side that second display unit deviates from the underlay substrate.
9. a kind of display device, which is characterized in that the display device includes the described in any item display surfaces of claim 1-8 Plate.
CN201810643054.8A 2018-06-21 2018-06-21 A kind of display panel and display device CN108831304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810643054.8A CN108831304A (en) 2018-06-21 2018-06-21 A kind of display panel and display device

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Application Number Priority Date Filing Date Title
CN201810643054.8A CN108831304A (en) 2018-06-21 2018-06-21 A kind of display panel and display device

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012078820A (en) * 2010-09-08 2012-04-19 Sumitomo Chemical Co Ltd Wire grid polarizer having a color filter function
CN102998845A (en) * 2012-12-11 2013-03-27 京东方科技集团股份有限公司 Liquid crystal display (LCD) and display device
KR20150071536A (en) * 2013-12-18 2015-06-26 삼성디스플레이 주식회사 Display device
CN105242342A (en) * 2015-11-09 2016-01-13 武汉华星光电技术有限公司 Polarizing plate and transparent display
CN205900546U (en) * 2016-08-05 2017-01-18 京东方科技集团股份有限公司 Two -sided electroluminescent display panel and display device
CN206892500U (en) * 2017-06-16 2018-01-16 京东方科技集团股份有限公司 A kind of reflecting type liquid crystal display panel and display device
CN107799017A (en) * 2017-11-08 2018-03-13 武汉华星光电半导体显示技术有限公司 Display with double faces and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012078820A (en) * 2010-09-08 2012-04-19 Sumitomo Chemical Co Ltd Wire grid polarizer having a color filter function
CN102998845A (en) * 2012-12-11 2013-03-27 京东方科技集团股份有限公司 Liquid crystal display (LCD) and display device
KR20150071536A (en) * 2013-12-18 2015-06-26 삼성디스플레이 주식회사 Display device
CN105242342A (en) * 2015-11-09 2016-01-13 武汉华星光电技术有限公司 Polarizing plate and transparent display
CN205900546U (en) * 2016-08-05 2017-01-18 京东方科技集团股份有限公司 Two -sided electroluminescent display panel and display device
CN206892500U (en) * 2017-06-16 2018-01-16 京东方科技集团股份有限公司 A kind of reflecting type liquid crystal display panel and display device
CN107799017A (en) * 2017-11-08 2018-03-13 武汉华星光电半导体显示技术有限公司 Display with double faces and preparation method thereof

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