CN1748173A - Stereoscopic picture display device and method of producing the same - Google Patents

Stereoscopic picture display device and method of producing the same Download PDF

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Publication number
CN1748173A
CN1748173A CNA2004800040215A CN200480004021A CN1748173A CN 1748173 A CN1748173 A CN 1748173A CN A2004800040215 A CNA2004800040215 A CN A2004800040215A CN 200480004021 A CN200480004021 A CN 200480004021A CN 1748173 A CN1748173 A CN 1748173A
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liquid crystal
spacer member
crystal panel
display device
mentioned
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CN100378509C (en
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田中慎一郎
荒松义明
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Seiko Epson Corp
Sanyo Electric Co Ltd
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Tottori Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
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  • Liquid Crystal (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

A stereoscopic image display device 30 comprising a backlight 32, a liquid crystal display panel 36, a liquid crystal parallax barrier 44, and a spacer member 40 arranged between the liquid crystal display panel 36 and the liquid crystal parallax barrier 44, in which the spacer member 40 is made of a glass material different from that of the glass substrates 36a, 36b constituting the liquid crystal display panel 36, and the spacer member 40 is a glass substrate having a thermal expansion coefficient larger than that of the glass substrates 36a, 36b constituting the liquid crystal display panel 36. More specifically, it is preferable that the spacer member 40 consist of a soda glass substrate and that the liquid crystal display panel 36 for display be formed of non-alkali glass. With this constitution, it is possible to provide a stereoscopic image display device, which can be used as a large-sized stereoscopic image display device by means of the liquid crystal parallax barrier method, with good display quality and where due consideration has been given to the thermal expansion of the substrate caused by heat generated by the backlight, and the manufacturing method therefor.

Description

Holographic display device and manufacture method thereof
Technical field
The present invention relates to not use special glasses just can carry out the holographic display device and the manufacture method thereof of the liquid crystal parallax barriers mode that stereopsis shows, relate in particular to the holographic display device and the manufacture method thereof of the thermal expansion of the substrate of having considered that the thermal conductance by generation backlight causes.
Background technology
Past shows the method for stereopsis as not using special glasses, known biconvex lens mode, parallax barriers (パ ラ ラ Star Network ス バ リ ア) mode are arranged, with the modes such as mode of light source slitization.
Fig. 4 is the synoptic diagram of the principle that shows of the stereopsis of expression parallax barriers mode.The observed image of observer forms on display panels 50.In order to carry out stereoscopy, on above-mentioned display panels 50, show that left eye forms with pixel R alternate configurations with the right eye of demonstration right eye with image with pixel L with the left eye of image.Left eye with pixel L and right eye with pixel R for example can with left eye with and 2 video cameras using of right eye photograph simultaneously and obtain, perhaps calculate by logical operation from a view data.In two pixels that obtain like this, comprise that the mankind carry out the required parallax information of stereo perception by binocular parallax.
Disposed parallax barriers 51 as the shading dividing plate in the place ahead of display panels 50.On parallax barriers 51, be longitudinal strip and form peristome 51a....The interval of peristome 51a... is set with the arrangement of pixel R with pixel L and right eye corresponding to above-mentioned left eye.By above-mentioned parallax barriers 51, left eye is separated about with image with image and right eye, this separated image incides respectively among observer's left eye 2L, the right eye 2R.The observer just can observe stereopsis like this.
The holographic display device of above-mentioned liquid crystal parallax barriers mode for example is disclosed in the flat 3-119889 communique of TOHKEMY.Utilize Fig. 5 that the object lesson of the holographic display device of the liquid crystal parallax barriers mode in disclosed past in the flat 3-119889 communique of TOHKEMY is described.
Fig. 5 possesses the diagrammatic, cross-sectional figure that is configured in as the holographic display device 10 of the parallax barriers mode of the liquid crystal parallax barriers of the former configuration of the liquid crystal panel of image display device.Among Fig. 5, on backlight 12 surface, dispose the transmissive type liquid crystal panel 16 of having arranged display pixel by the 1st polarized light piece 14, but also dispose liquid crystal parallax barriers 24 via the 2nd polarized light piece 18, glass spacer 20 and the 3rd polarized light piece 22, in addition, on the surface of this liquid crystal parallax barriers 24, dispose the 4th polarized light piece 26.
Transmissive type liquid crystal panel 16 comprises: the back glass plate 16a and the front glass plate 16b that is positioned at the emitting side of light that are positioned at the light incident side of light; Be formed on the pixel electrode 16c on the inside surface of back glass plate 16a; Be formed on colored filter 16d on the inside surface of front glass plate 16b and sealing and be filled in liquid crystal 16e between back glass plate 16a and the front glass plate 16b.Transmissive type liquid crystal panel 16 respectively the Alternation Display right eye with image and left eye image.
Liquid crystal parallax barriers 24 is filled with liquid crystal 24c in the confined space by 2 glass sheets 24a of electrode that is formed with the strip parallel with the striped of the pixel L of transmissive type liquid crystal panel 16 and R in the inboard respectively and opposite electrode (not shown) thereof, 24b clamping, the image that carries out 2D under the state that does not apply voltage shows that the image that carries out 3D under the state that has applied voltage shows.That is, this liquid crystal parallax barriers 24 is specified its XY address by the microcomputer equal controller, so can the optional position on baffle surface under the situation that 3D shows form the dividing plate striped of arbitrary shape.
, the dividing plate striped that produces the taeniae shape only is the situation that shows the 3D image, under the situation that the 2D image shows, just need carry out the feasible generation that stops the dividing plate striped of drive controlling, becomes water white state thus in the gamut of image viewing area.
Between the liquid crystal panel 16 and liquid crystal parallax barriers 24 that show usefulness, disposed and utilized the glass spacer 20 of glass substrate as the spacer member.Show that usefulness liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers are bonding in the surrounding edge portion of their panel by double-sided adhesive tape.
In this holographic display device,, the picture of display device to show the needs that enlarge with the interval between liquid crystal panel 16 and the liquid crystal parallax barriers 24 along with having produced to the development of maximization aspect.Promptly, when the binocular parallax image that observation post shows, in order to observe good stereopsis, need to show with the distance between liquid crystal panel and the liquid crystal parallax barriers within certain scope, maximize and distance between observer and the picture also becomes under the big situation at picture, produced the needs that increase this distance.That is to say, though less big for this distance the small-sized screen that in mobile phone, uses, must become big for this distance the screen that in TV etc., uses.
As adjusting the means that show with the interval between liquid crystal panel and the liquid crystal parallax barriers, in the holographic display device of in the flat 3-119889 communique of above-mentioned TOHKEMY, putting down in writing, between showing, disposed glass substrate or acrylic panel, can adjust the interval that shows with between liquid crystal panel and the liquid crystal parallax barriers by the thickness of this spacer member as the spacer member with liquid crystal panel and liquid crystal parallax barriers.Why with glass substrate and acrylic panel come as the spacer member be because its must be can transmission from the material of illumination light backlight.
Disclosure of an invention
In above-mentioned such holographic display device, if display device is small-sized device, then show with less the getting final product in interval between liquid crystal panel and the liquid crystal parallax barriers, need not the spacer member is carried out too much consideration, if but display device is a large-scale plant, then be necessary to enlarge as previously mentioned the interval that shows with between liquid crystal panel and the liquid crystal parallax barriers, such as, under 40 inches display frame, need the interval about 5mm.Thus, also need to consider transparency, the member cost of spacer member.
In addition, because the heat of in holographic display device, using that produces backlight, liquid crystal parallax barriers, spacer member, demonstration cause thermal expansion with the glass substrate that uses in the liquid crystal panel, and because each glass substrate is all different to distance backlight, so also exist owing to the also different problems that make glass substrate produce distortion of each glass substrate expansivity.Holographic display device is owing to being with liquid crystal parallax barriers, spacer member, showing and form with multistage laminations such as liquid crystal panel and polarized light pieces, if substrate is owing to thermal expansion produces distortion, then also can produce ill effect to the flatness on the surface of each member, the result causes the display quality of holographic display device to worsen.Therefore, as the holographic display device of the flat 3-119889 communique of above-mentioned TOHKEMY, only on showing, dispose the only member of transmissive light, have the problem that is difficult to provide display device with sufficient display quality with the spacer member between liquid crystal panel and the liquid crystal parallax barriers.
The present application people, the result who carries out various researchs in order to solve such problem has repeatedly found such situation: in the holographic display device that utilizes liquid crystal parallax barriers mode, make formation show that the glass substrate with liquid crystal panel is an alkali-free glass, and the spacer member is and constitute the different glass material of glass substrate that shows with liquid crystal panel, can address the above problem thus, thereby finish the present invention.
Promptly, the object of the present invention is to provide a kind of holographic display device and manufacture method thereof, be the theme to address the above problem, especially also can be used in the large-scale holographic display device of liquid crystal parallax barriers mode, display quality is good, has also considered the thermal expansion of the substrate that the thermal conductance of generation backlight causes.
Above-mentioned purpose of the present invention can realize by following structure.Promptly, holographic display device of the present invention comprises: backlight, show with liquid crystal panel, liquid crystal parallax barriers, be configured in the spacer member between above-mentioned demonstration usefulness liquid crystal panel and the liquid crystal parallax barriers, it is characterized in that, above-mentioned spacer member be by with constitute above-mentioned demonstration and constitute with the different glass material of the glass substrate of liquid crystal panel.
According to this structure, can adjust because the formation that causes of heating backlight shows with the glass substrate that is made of alkali-free glass of liquid crystal panel and the caused distortion of thermal expansion of spacer member.Thus, as the spacer member, preferably compare the big glass substrate of thermal expansivity with the glass substrate of liquid crystal panel with the above-mentioned demonstration of formation.
And, in holographic display device of the present invention, it is characterized in that above-mentioned spacer member is a soda-lime glass, in addition, constituting the glass substrate that shows with liquid crystal panel is alkali-free glass.By the soda-lime glass substrate is used as the spacer member, compare with material such as propylene, the transparency of spacer member can be guaranteed, and the increase of cost can be suppressed.In addition, soda-lime glass also has not perishable distortion, plane degree advantages of higher, so a kind of possess other members that are difficult for injury institute lamination, the device that is suitable for the spacer member of holographic display device can be provided.
And, the whole periphery of the whole periphery of the surrounding edge portion of above-mentioned demonstration usefulness liquid crystal panel and spacer member and the surrounding edge portion of spacer member and liquid crystal parallax barriers is in the same place by adhesives, forms negative pressure region between above-mentioned demonstration is with liquid crystal panel and spacer member and between spacer member and the liquid crystal parallax barriers.In described holographic display device, it is characterized in that above-mentioned bonding agent is coated in and shows with in the surrounding edge portion beyond the viewing area of liquid crystal panel.
According to this structure, with the stationary phase ratio that carries out with double-sided adhesive tape in past, can realize more firm fixingly, be suitable for large-scale holographic display device more.In addition, owing to make zone and spacer member that spacer member and liquid crystal parallax barriers form by bonding agent and show and become negative pressure region by the zone that bonding agent forms with liquid crystal panel, gap stabilization between each member can be made, but also the generation of the distortion that the thermal expansion of heating backlight causes can be suppressed to be accompanied by.
Further, this bonding agent is formed with the open area of a part of uncoated, is coated with material for sealing in this open area simultaneously.
According to this structure, with the stationary phase ratio that carries out with double-sided adhesive tape in past, can realize more firm fixingly, be suitable for large-scale holographic display device more.In addition, owing to make zone and spacer member that spacer member and liquid crystal parallax barriers form by bonding agent and show and become negative pressure region by the zone that bonding agent forms with liquid crystal panel, gap stabilization between each member can be made, but also the generation of the distortion that the thermal expansion of heating backlight causes can be suppressed to be accompanied by.
In addition, the manufacture method of holographic display device of the present invention, wherein this holographic display device comprises: show and use liquid crystal panel; The liquid crystal parallax barriers; Be configured in above-mentioned demonstration with between liquid crystal panel and the liquid crystal parallax barriers, by with constitute the spacer member that above-mentioned demonstration constitutes with different glass material of the glass substrate of liquid crystal panel etc., it is characterized in that, comprise: above-mentioned demonstration with at least one side's of at least one side's of liquid crystal panel and spacer member surrounding edge portion and spacer member and liquid crystal parallax barriers surrounding edge portion on applying adhesive, make the operation that at least one position of this surrounding edge portion, forms the open area that does not have bonding agent; By this bonding agent above-mentioned demonstration is bonded together with liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers, makes the operation of this bonding agent sclerosis; With the operation of the air between above-mentioned demonstration usefulness liquid crystal panel and spacer member and spacer member and the liquid crystal parallax barriers from the extraction of above-mentioned open area; Seal the operation of above-mentioned open area.In this manufacture method, the operation of above-mentioned applying adhesive is the operation that applies with the surrounding edge portion beyond the viewing area of liquid crystal panel showing.
According to this manufacture method, compare with the operation of putting up double-sided adhesive tape in past, owing to the operation with applying adhesive is finished, become easily so make, do not produce bubble and can realize more firm fixing.And, owing to can make zone and the spacer member that spacer member and liquid crystal parallax barriers form by bonding agent and show and become negative pressure region by the zone that bonding agent forms with liquid crystal panel, gap stabilization between each member can be made, but also the generation of the distortion that the thermal expansion of heating backlight causes can be suppressed to be accompanied by.
The simple declaration of accompanying drawing
Fig. 1 is the figure of the structure of expression holographic display device of the present invention, (a) is diagrammatic, cross-sectional figure, (b) is the enlarged drawing of its A part,
Fig. 2 is the synoptic diagram of the thermal stress that causes of expression heating backlight, (a) is the figure of the direction of expression thermal stress, (b) is the figure that schematically shows the distortion of the panel that thermal expansion causes,
Fig. 3 is the synoptic diagram that blocks the plane at the substrate junction surface of expression holographic display device of the present invention,
Fig. 4 is the synoptic diagram of the principle that shows of the stereopsis of expression parallax barriers mode,
Fig. 5 is the diagrammatic, cross-sectional figure of an example of disclosed holographic display device in the flat 3-119889 communique of TOHKEMY.
The best mode that carries out an invention
Form of implementation to holographic display device of the present invention is described in detail with reference to the accompanying drawings.Fig. 1 is the figure of the structure of expression holographic display device 30 of the present invention, (a) is diagrammatic, cross-sectional figure, (b) is the enlarged drawing of its A part.Holographic display device 30 of the present invention disposes on backlight 32 top across the spacer member 40 of glass substrate etc. and constitutes with liquid crystal panel 36 and liquid crystal parallax barriers 44 by the bonding demonstration of bonding agent.
Show with liquid crystal panel 36 it is transmissive type liquid crystal panel, comprising: the back glass plate 36a and the front glass plate 36b that is positioned at the emitting side of light that are positioned at the light incident side of light; Be formed on the not shown pixel electrode on the inside surface of back glass plate 36a; Be formed on the not shown colored filter on the inside surface of front glass plate 36b; And be filled in liquid crystal 36e between back glass plate 36a and the front glass plate 36b with encapsulant sealing.Showing that with on the liquid crystal panel 36 the Alternation Display right eye shows common image with image and left eye image when not carrying out stereo display respectively when carrying out stereo display.
Though liquid crystal parallax barriers 44 is that the parallax barriers of the parallax barriers of employed simple matrix drive type like that in common liquid crystal indicator and the liquid crystal panel that utilizes active matrix drive-type is also no problem, but, probably therefore cause yields to descend owing to need on substrate, form complicated distribution etc.
Therefore, liquid crystal parallax barriers 44, in a pair of transparent glass substrate 44a, the 44b of holding liquid crystal 44c, the whole transparency electrode that forms ITO etc. on a glass substrate 44a, and on another glass substrate 44b, except form transparency electrode as the place the position of transmissive portions.And when on electrode, not applying driving voltage, set liquid crystal by the orientation that complete transmitted light is such.Like this, by applying driving voltage, make the position that forms transparency electrode on two substrates become light shielding part, the part that does not only form transparency electrode on a substrate becomes makes light transmissive transmissive portions.
Such liquid crystal parallax barriers 44 does not only form transparency electrode and gets final product on the position that will form transmissive portions, compare with the dividing plate of the liquid crystal panel that uses active matrix drive-type etc., can make with fairly simple technology.And the shape of the not formation portion by changing transparency electrode etc. can more freely make the shape and the change in location of transmissive portions.
Backlight 32 have used the backlight of type under a plurality of cold-cathode tubes in order to realize high brightness.Especially for the holographic display device that needs spacer member 40, display device is a large-scale plant, because the brightness backlight of the so-called side light source type that uses in the usually middle-size and small-size liquid crystal indicator is not enough, so type backlight under using.In addition, under the situation of parallax barriers mode, even under the situation that 2D shows, have enough brightness, but when switching to stereo display because the shading of dividing plate, therefore make luminance shortage, thus need to use can realize high brightness under type backlight.And backlight 32, show with the member of formation of liquid crystal panel 36, spacer member 40, liquid crystal parallax barriers 44 etc. fixingly with jointing material or adhesive tape etc., and keep its side, the back side, and be contained in the suitable housing with framework.And in the such holographic display device of above-mentioned prior art, general demonstration usefulness liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers are bonding with their panel surrounding edge portion with double-sided adhesive tape.Thus, under the situation that the picture of display device maximizes, has the problem of insufficient strength in the adhesive bonding method that carries out with double-sided adhesive tape.
In addition, not producing bubble between adhesive tape and each member, is unusual difficulty with large-scale demonstration with whole the operation with the double-sided adhesive tape bonding of the spacer member of liquid crystal panel, liquid crystal parallax barriers and glass spacer etc.If produced bubble then can impact to demonstration.Therefore, show with liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers and fix by method described later.
Constitute to show with the back glass plate 36a of liquid crystal panel 36 and front glass plate 36b except require properties of transparency well, not perishable, be out of shape and plane degree height, owing to also need to form TFT driving element, pixel electrode, opposite electrode, colored filter etc., so also need chemical resistance, because stripping alkali has influence on the TFT performance from glass, so use the glass material of alkali-free.Glass plate 44a, the 44b that constitutes liquid crystal parallax barriers 44 also is the same.The alkali-free glass that uses in liquid crystal panel need be worked hard on its material and manufacture method to reduce thermal expansivity because the heat during electrode and TFT system film causes distortion, also causes its cost very high thus.
On the other hand, be configured in the spacer member 40 that shows with between liquid crystal panel 36 and the liquid crystal parallax barriers 44, if display device is large-scale, need to increase as mentioned above the interval that shows with liquid crystal panel and liquid crystal parallax barriers, for example, just need interval about 5mm under 40 inches the display frame.Thus, just need to consider transparency, the component costs of spacer member.
In addition, also need to consider the influence of backlight 32 heat that cause of use in the holographic display device 30.Especially backlight 32 be to use a plurality of cold-cathode tubes under under the situation of type, the influence that heating causes is very high.And because demonstration has been used 2 substrates respectively with liquid crystal panel 36 and liquid crystal parallax barriers 44, substrate surface separately just has 4, and spacer member 40 also has 2 substrate surfaces.Holographic display device 30 is that their laminations are constituted, and has 10 substrate surfaces at least.Therefore, produced Newton ring or Moire fringe etc. midway, made a big impact for the display quality of device because the damage that the flatness on the surface of each member and manufacturing produce makes.
In holographic display device 30 of the present invention, from the above point of view, with respect to glass plate 36a, the 36b, 44a, the 44b that constitute to show with alkali-free glass with liquid crystal panel 36 and liquid crystal parallax barriers 44, spacer member 40 usefulness show with the different glass material of the alkali-free glass of liquid crystal panel and liquid crystal parallax barriers and constitute with constituting.
As the glass material of spacer member 40, preference is as using the big glass material of thermal expansivity for glass plate 36a, 36b with respect to alkali-free glass, 44a, the 44b.This be because, show with liquid crystal panel 36 be configured in backlight 32 directly over, spacer member 40 is configured in and shows with above the liquid crystal panel 36, so the influence that backlight 32 heating causes is big to the effect that constitutes the effect comparison spacer member 40 that shows the glass substrate 36a, the 36b that use liquid crystal panel 36.
Fig. 2 is the synoptic diagram of the thermal stress that causes of expression backlight 32 heating, (a) is the figure of the direction of expression thermal stress, (b) is the figure that schematically shows the distortion of the panel that thermal expansion causes.As shown in Figure 2, at spacer member 40 and glass substrate 36a, 36b is under the situation of same glass material, compare with the thermal expansion of spacer member 40, the thermal expansion of glass substrate 36a, 36b is big, so produce distortion at the junction surface of spacer member 40 and glass substrate 36b (with the Fixed Division of formation such as bonding agent), cause display quality to reduce.
As the application as spacer member 40, have such as the above such formation by employing and to show glass material, thereby can reduce the influence that backlight 32 heat causes with the big thermal expansivity of the thermal expansivity of glass substrate 36a, the 36b of liquid crystal panel 36.That is to say, because the size that expands with liquid crystal panel 36 near backlight 32 demonstration and reduced with showing to compare away from the difference between the size of backlight 32 spacer member 40 expansions with liquid crystal panel 36 is so also just reduced the distortion at the junction surface of spacer member 40 and glass substrate 36b.
As with glass substrate 36a, 36b in the alkali-free glass that uses compare the big glass material of thermal expansivity, for example can use soda-lime glass.The thermal expansivity of soda-lime glass normally 85 * 10 -7/ ℃~95 * 10 -7About/℃ (0~300 ℃), with the thermal expansivity 30 * 10 of alkali-free glass -7/ ℃~50 * 10 -7/ ℃ (0~300 ℃) is compared very big.And soda-lime glass also has cheap, and transparency is also fine, is difficult for heat damage, and flatness is outstanding, and advantage such as easy damaged not can be as the spacer member that is suitable for holographic display device.
And except alkali-free glass, can also use thermal expansivity is 30 * 10 as the employed glass of glass substrate 36a, 36b -7Borosilicate acids glass about/℃ (0~300 ℃).
Fig. 3 is the synoptic diagram that blocks the plane at the substrate junction surface of expression holographic display device 30 shown in Figure 1.In spacer member 40, show the bonding agent 48a (48b) that is coated with thermosetting or UV cured property with the surrounding edge portion outside the viewing area of liquid crystal panel, show with liquid crystal panel 36 (liquid crystal parallax barriers 44) with this bonding agent 48a (48b) bonding.As bonding agent 48a (48b), more suitable is mechanicalness cohesive strength height, to the good stability of the environmental change of temperature, humidity, can utilize the thermosetting that existing equipment applies or the encapsulant of UV cured property.And, on the bonding agent 48a (48b), be formed with the open area 50 that does not have applying adhesive around on the part of edge part.
Boning, operation is as described below carries out.At first, in the demonstration of spacer member 40 with the surrounding edge portion outside the viewing area of liquid crystal panel, the bonding agent 48a (48b) that coating is made of the encapsulant of thermosetting or UV cured property.In the coating of bonding agent 48a (48b), carry out operation, form the open area 50 that does not have applying adhesive 48a (48b) on the part of feasible edge part around.
Then, bonding spacer member 40 and demonstration make bonding agent 48a (48b) sclerosis with liquid crystal panel 36 (liquid crystal parallax barriers 44).After bonding agent 48a (48b) sclerosis, from the open area 50, extract spacer member 40 and demonstration with the air in the space of causing with bonding agent 48a (48b) between the liquid crystal panel 36 (liquid crystal parallax barriers 44).Use material for sealing sealed open zone 50 at last, make spacer member 40 and show the regional interior negative pressure that keeps that causes with bonding agent 48a (48b) with between the liquid crystal panel 36 (liquid crystal parallax barriers 44).And for material for sealing, so long as the material in sealed open zone 50 gets final product reliably, the epoxy resin of ultraviolet hardening resin, acrylic resin or single fluidity or two fluidities etc. are from mechanical cohesive intensity, to the stability of the environmental change of temperature, humidity or can utilize aspects such as existing equipment applies all to be well suited for.So extract air, in the time of can preventing to use holographic display device 30 because the heat of generation backlight makes air expansion.And when extracting air, not necessarily to extract all air completely, as long as probably below 80kPa, preferably below 50kPa.In addition, under the situation of bonding demonstration as described above with liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers, between showing and be distributed with spherical separator between spacer member and the liquid crystal parallax barriers, be very resultful aspect the homogeneity of the distance between each member of assurance with liquid crystal panel and spacer member.
As mentioned above, according to holographic display device of the present invention, can adjust because the formation that causes of heating backlight shows the distortion that glass substrate and the thermal expansion between the spacer member with liquid crystal panel cause.As the spacer member, adopt with constituting to show and compares the big glass substrate of thermal expansivity with the glass substrate of liquid crystal panel, especially by using soda-lime glass, compare with material such as propylene, can also guarantee the transparency of spacer member, the increase of inhibition cost.
In addition, that soda-lime glass has is not perishable, flatness is high, be difficult to advantages such as damage, so a kind of device that possesses the spacer member that is suitable for holographic display device can be provided.
In addition, because spacer member 40 and liquid crystal parallax barriers 44 and spacer member 40 and demonstration bond by bonding agent 48b, 48a with liquid crystal panel 36, compare with the operation of pasting double-sided adhesive tape as before, operation by applying adhesive 48a, 48b just can realize, so the manufacturing handling ease can also realize more firm fixing simultaneously.And, zone that forms by bonding agent 48b between spacer member 40 and the liquid crystal parallax barriers 44 and spacer member 40 and demonstration use the zone that forms by bonding agent 48a between the liquid crystal panel 36 because the formation negative pressure region, can make the gap stabilization between each member, thereby can suppress to be accompanied by backlight 32 heating and the generation of the substrate deformation that the thermal expansion that produces causes.

Claims (12)

1, a kind of holographic display device comprises: backlight, show with liquid crystal panel, liquid crystal parallax barriers, be configured in the spacer member between above-mentioned demonstration usefulness liquid crystal panel and the liquid crystal parallax barriers, it is characterized in that,
Above-mentioned spacer member be by with constitute above-mentioned demonstration and constitute with the different glass material of the glass substrate of liquid crystal panel.
2, holographic display device as claimed in claim 1 is characterized in that, above-mentioned spacer member is to compare the big glass substrate of thermal expansivity with the above-mentioned demonstration of formation with the glass substrate of liquid crystal panel.
3, holographic display device as claimed in claim 1 or 2 is characterized in that, above-mentioned spacer member is the soda-lime glass substrate.
4, holographic display device as claimed in claim 1 or 2 is characterized in that, constituting above-mentioned demonstration is alkali-free glass with the glass substrate of liquid crystal panel.
5, holographic display device as claimed in claim 1, it is characterized in that, the whole periphery of the whole periphery of the surrounding edge portion of above-mentioned demonstration usefulness liquid crystal panel and spacer member and the surrounding edge portion of spacer member and liquid crystal parallax barriers is in the same place by adhesives
Between above-mentioned demonstration is with liquid crystal panel and spacer member and between spacer member and the liquid crystal parallax barriers, form negative pressure region.
6, holographic display device as claimed in claim 5 is characterized in that, above-mentioned bonding agent is coated in and shows with in the surrounding edge portion beyond the viewing area of liquid crystal panel.
7, holographic display device as claimed in claim 5 is characterized in that, is formed with the open area on the part of above-mentioned bonding agent, is coated with material for sealing in this open area simultaneously.
8, holographic display device as claimed in claim 7 is characterized in that, above-mentioned material for sealing is ultraviolet hardening resin, acrylic resin or epoxy resin.
As each described holographic display device in the claim 5~7, it is characterized in that 9, above-mentioned bonding agent is the encapsulant of thermosetting or UV cured property.
10, a kind of manufacture method of holographic display device, this holographic display device comprises: show and use liquid crystal panel; The liquid crystal parallax barriers; Be configured in above-mentioned demonstration with between liquid crystal panel and the liquid crystal parallax barriers, by with constitute above-mentioned demonstration with the spacer member that different glass material of the glass substrate of liquid crystal panel etc. constitutes, it is characterized in that, comprising:
Above-mentioned demonstration with at least one side's of at least one side's of liquid crystal panel and spacer member surrounding edge portion and spacer member and liquid crystal parallax barriers surrounding edge portion on applying adhesive, make the operation that at least one position of this surrounding edge portion, forms the open area that does not have bonding agent;
Above-mentioned demonstration is bonded together with liquid crystal panel and spacer member and spacer member and liquid crystal parallax barriers, makes the operation of above-mentioned bonding agent sclerosis;
With the operation of the air between above-mentioned demonstration usefulness liquid crystal panel and spacer member and spacer member and the liquid crystal parallax barriers from the extraction of above-mentioned open area;
Seal the operation of above-mentioned open area.
11, the manufacture method of holographic display device as claimed in claim 10 is characterized in that, the operation of above-mentioned applying adhesive is the operation that applies with the surrounding edge portion beyond the viewing area of liquid crystal panel showing.
12, as the manufacture method of claim 10 or 11 described holographic display devices, it is characterized in that, above-mentioned bonding agent is the encapsulant of thermosetting or UV cured property, and the sealing of above-mentioned open area is undertaken by uv-hardening resin, acrylic resin or epoxy resin.
CNB2004800040215A 2003-03-25 2004-03-24 Stereoscopic picture display device and method of producing the same Expired - Fee Related CN100378509C (en)

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Application Number Priority Date Filing Date Title
JP082897/2003 2003-03-25
JP082898/2003 2003-03-25
JP2003082897A JP4449318B2 (en) 2003-03-25 2003-03-25 Stereoscopic image display device and manufacturing method thereof

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CN1748173A true CN1748173A (en) 2006-03-15
CN100378509C CN100378509C (en) 2008-04-02

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