CN101201474B - Dust-proof glass, and electro-optic device and projection type image display device using the same - Google Patents
Dust-proof glass, and electro-optic device and projection type image display device using the same Download PDFInfo
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- CN101201474B CN101201474B CN2007101933699A CN200710193369A CN101201474B CN 101201474 B CN101201474 B CN 101201474B CN 2007101933699 A CN2007101933699 A CN 2007101933699A CN 200710193369 A CN200710193369 A CN 200710193369A CN 101201474 B CN101201474 B CN 101201474B
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Abstract
The present invention provides a dust-proof glass which can improve display quality, an electro-optic device using the dust-proof glass. A reflecting film (121) is set on the light incident face (7) of the dust-proof glass (11), so the incident light (200) reflects outwards on the light incident face (7). Hence, light towards the transmission type liquid crystal panel is reduced, and stray light is also reduced, display quality is improved. In addition, a cutting part (14) is recessed contrast to the light reflection face (6) of the transmission type liquid crystal panel of the dust-proof glass (11), so returning light (400) towards the cutting part (14) in the transmission type liquid crystal panel contrast to the reflection of the light reflection face (6) of the transmission type liquidcrystal panel of the dust-proof glass (11), light reflected on the cutting part (140) is towards the outer. Hence, stray light is reduced, display quality is improved.
Description
Technical field
The present invention relates to dustproof glass that in projection type image display apparatus etc., uses and electro-optical device, the projection type video device that uses this dustproof glass.
Background technology
In projection type image display apparatus etc., use electro-optical device with transmissive type liquid crystal panel.In projection type image display apparatus, the light that transmissive type liquid crystal panel is crossed in transmission is incident upon on the screen etc. by the projection camera lens.Herein, the scar of the light entrance face of transmissive type liquid crystal panel and attached to the dust on the light entrance face etc. because near with the distance of the liquid crystal of focus state, so be apparent on the screen, cause display quality to reduce.In order to reduce the influence of such scar and dust etc., on the light entrance face of transmissive type liquid crystal panel, paste dustproof glass, distance between liquid crystal by separating focus state and dust etc. the focal length that staggers also makes it be difficult for being observed even be incident upon on screen etc.In addition, incide outside the viewing area of transmissive type liquid crystal panel, on dustproof glass, be provided with photomask in order to prevent light.The known photomask that this dustproof glass arranged is located at transmissive type liquid crystal panel to be the configuration of liquid crystal light valve side (following table is shown the light-emitting face of dustproof glass) and to have reflection from the reflection of incident light film of outside with absorb structure (with reference to patent documentation 1) from the double-deck photomask of the absorption layer of the light of liquid crystal light valve side.
No. 3799829 communique of [patent documentation 1] Japan special permission (the 22nd page, Figure 14)
Be provided with on the light-emitting face of dustproof glass under the situation of reflectance coating, the incident light transmission is crossed the surface of dustproof glass and is arrived reflectance coating, by the part of the incident light that reflectance coating reflected once more towards the surface of dustproof glass.On the surface of dustproof glass, cause reflection once more, the part of incident light enters transmissive type liquid crystal panel.But it is different that this light and common light are compared its incident angle, thus by the transmissive type liquid crystal panel reflection and become back light or parasitic light, cause easily showing contrast reduction, show the reduction of unequal display quality.
Summary of the invention
The objective of the invention is to, a kind of electro-optical device that improves the dustproof glass of display quality and use this dustproof glass, projection type video device are provided.
The present invention finishes at least a portion that solves above-mentioned problem, can be used as following mode or application examples and realizes.
(application examples 1)
Dustproof glass that should use-case is located on the light entrance face of transmissive type liquid crystal panel, it is characterized in that described dustproof glass has: reflecting part, and it is located at the outer rim of the light entrance face of described dustproof glass; And notch, it is formed on the outer rim of the light-emitting face of described dustproof glass.
According to should use-case, reflecting part be located on the light entrance face of dustproof glass, thus towards the incident light of the outer rim of light entrance face by reflecting part and towards external reflection.Therefore, the light towards transmissive type liquid crystal panel reduces once more, and the generation of parasitic light tails off, and display quality improves.
In addition, in should use-case, notch be compared depression with the light-emitting face of dustproof glass, thus from the inboard of transmissive type liquid crystal panel towards the back light of notch in the cut sides reflection of notch and, can not become the parasitic light that need not towards end face.Therefore, the generation of parasitic light tails off, and display quality improves.
(application examples 2)
Relevant with application examples 1 should use-case in, preferably roughly be crossed as the right angle with the light entrance face of described dustproof glass and the length of normal degree that intersects with the cut sides of described notch along with shortening near the end face of described dustproof glass.
In should use-case, cut sides be inclined to back light towards external reflection, thus from the inboard of transmissive type liquid crystal panel towards the major part of the back light of notch towards external reflection.Therefore, the generation of parasitic light tails off, and display quality improves.
(application examples 3)
Relevant with application examples 1 or application examples 2 should use-case in, the surface roughness Ra of preferred described cut sides is 0.5 μ m～20 μ m.
In should use-case, the concave-convex surface that shows as 0.5 μ m～20 μ m owing to the surface roughness Ra of the cut sides of notch makes the light scattering of viewing area, so reduce towards the light of specific direction.Therefore, show unequal tailing off, display quality improves.
(application examples 4)
With application examples 1～3 in any one relevant should use-case in, preferred described reflecting part is a metal film.
In should use-case, the reflectivity height of the viewing area of metal film, so the light that transmission is crossed outside the viewing area that the light quantity of metal film promptly incides liquid crystal panel reduces, so the generation of parasitic light tails off, display quality improves.
(application examples 5)
With application examples 1～4 in any one relevant should use-case in, preferred described notch has light absorbing zone.
In should use-case, not only by notch control reflection, also by the light absorbing zone absorbing light, so the reflectivity of notch reduces.Therefore, reduce towards the light of transmissive type liquid crystal panel in notch reflection, the generation of parasitic light tails off, and display quality improves.
(application examples 6)
Electro-optical device that should use-case is characterised in that this electro-optical device has: transmissive type liquid crystal panel; Dustproof glass, it is located on the light entrance face of described transmissive type liquid crystal panel; Reflecting part, it covers the outer rim of the light entrance face of described dustproof glass; Shell, its covering has the periphery of the liquid-crystal apparatus of described transmissive type liquid crystal panel and described dustproof glass; And packing material, it absorbs or scattering light in the periphery of described liquid-crystal apparatus and the gap between the described shell, and described dustproof glass has notch, and this notch is formed on the outer rim of the light-emitting face of described dustproof glass.
According to should use-case, be arranged to the outer rim that reflecting part covers the light entrance face of dustproof glass, so towards the incident light of the outer rim of light entrance face by reflecting part and towards external reflection.Therefore, inner and tail off towards the generation of the parasitic light of transmissive type liquid crystal panel by dustproof glass, display quality improves.
In addition, in should use-case, cut sides is compared depression with the light-emitting face of dustproof glass, so different with the situation by the reflectance coating reflection of the light-emitting face of dustproof glass of prior art, from the inboard of transmissive type liquid crystal panel towards the back light of cut sides in the cut sides reflection and towards packing material.Light is absorbed or scattering in packing material, so the generation of parasitic light tails off, display quality improves.
(application examples 7)
Relevant with application examples 6 should use-case in, preferred described packing material also is filled in the gap between described notch and the described transmissive type liquid crystal panel.
In should use-case, absorb back light by the packing material that is filled in the gap between cut sides and the transmissive type liquid crystal panel, so the reflection of notch further reduces.Therefore, the generation of parasitic light tails off, and display quality improves.
(application examples 8)
Relevant with application examples 6 or application examples 7 should use-case in, preferred described reflecting part is provided in a side of on the end face of described shell and prolongs prolonging of to the central side of described dustproof glass and portion.
In should use-case, because portion, prolonging of shell be made as reflecting part, so only portion and can easily improve display quality by on the end face of shell, being provided with to prolong.
(embodiment 9)
Relevant with embodiment 6 should use-case in, preferably roughly be crossed as the right angle with the light entrance face of described dustproof glass and the length of normal degree that intersects with the cut sides of described notch along with shortening near the end face of described dustproof glass.
In should use-case, cut sides be inclined to incident light towards external reflection, so further reflect towards packing material towards the back light of cut sides from the inboard of transmissive type liquid crystal panel.Light is absorbed or scattering in packing material, so the generation of parasitic light tails off, display quality improves.
(application examples 10)
Relevant with application examples 9 should use-case in, the surface roughness Ra of the described cut sides of preferred described notch is 0.5 μ m～20 μ m.
In should use-case, the concave-convex surface that shows as 0.5 μ m～20 μ m owing to the surface roughness Ra of cut sides makes the light scattering of viewing area, so reduce towards the light of specific direction.Therefore, show unequal tailing off, display quality improves.
(application examples 11)
Relevant with application examples 6 or application examples 7 should use-case in, preferred described reflecting part is provided in a side of the metal film on the outer rim of light entrance face of described dustproof glass.
In should use-case, the reflectivity height of the viewing area of metal film, so the light that transmission is crossed outside the viewing area that the light quantity of metal film promptly incides liquid crystal panel reduces, so the generation of parasitic light tails off, display quality improves.
(application examples 12)
With application examples 6～11 in any one relevant should use-case in, preferred described notch has light absorbing zone.
In should use-case, not only by notch control reflection, also by the light absorbing zone absorbing light, so the reflectivity of notch reduces.Therefore, in notch reflection and once more the light towards transmissive type liquid crystal panel reduces, and the generation of parasitic light tails off, and display quality improves.
(application examples 13)
Projection type video device that should use-case has the electro-optical device the light beam that penetrates from light source modulated according to image information and to carried out the projection lens of enlarging projection by the light beam after the described electro-optical device modulation, it is characterized in that described electro-optical device has any described dustproof glass in the application examples 1～5.
According to should use-case, the electro-optical device of projection type video device has dustproof glass as described above, so the generation of parasitic light is few, display quality is good.
That is, reflecting part is located on the light entrance face of dustproof glass, thus towards the incident light of the outer rim of light entrance face by reflecting part and towards external reflection.Therefore, the light towards transmissive type liquid crystal panel reduces once more, and the generation of parasitic light tails off, and display quality improves.
In addition, in should use-case, notch be compared depression with the light-emitting face of dustproof glass, thus from the inboard of transmissive type liquid crystal panel towards the back light of notch in the cut sides reflection of notch and, can not become the parasitic light that need not towards end face.Therefore, the generation of parasitic light tails off, and display quality improves.
(application examples 14)
Projection type video device that should use-case has the electro-optical device the light beam that penetrates from light source modulated according to image information and to carried out the projection lens of enlarging projection by the light beam after the described electro-optical device modulation, it is characterized in that described projection type video device has any described electro-optical device in the application examples 6～12.
According to should use-case, the projection type video device has electro-optical device as described above, so the generation of parasitic light is few, display quality is good.
That is, reflecting part is located on the light entrance face of electro-optical device, thus towards the incident light of the outer rim of light entrance face by reflecting part and towards external reflection.Therefore, the light towards transmissive type liquid crystal panel reduces once more, and the generation of parasitic light tails off, and display quality improves.
In addition, in should use-case, have: shell, its covering has the periphery of the liquid-crystal apparatus of transmissive type liquid crystal panel and dustproof glass; And packing material, it absorbs or scattering light in the periphery of liquid-crystal apparatus and the gap between the described shell, so after the cut sides reflection of back light at notch of notch, absorb or scattering by above-mentioned filling agent from the inboard of transmissive type liquid crystal panel.Therefore, the generation of parasitic light tails off, and display quality improves.
(application examples 15)
Relevant with application examples 13 or application examples 14 should use-case in, preferred described electro-optical device has: transmissive type liquid crystal panel; Shell, its covering has the periphery of the liquid-crystal apparatus of described transmissive type liquid crystal panel and described dustproof glass; And packing material, it absorbs or scattering light in the periphery of described liquid-crystal apparatus and the gap between the described shell.
In should use-case, from the inboard of transmissive type liquid crystal panel towards the back light of cut sides in the cut sides reflection and towards packing material.Light is absorbed or scattering in packing material, so the generation of parasitic light tails off, display quality improves.
Description of drawings
Fig. 1 is the vertical view of the related electro-optical device of the 1st embodiment of the present invention.
Fig. 2 is the A-A ' sectional view among Fig. 1 of electro-optical device.
Fig. 3 is the exploded perspective view of electro-optical device.
Fig. 4 is the vertical view of liquid-crystal apparatus.
Fig. 5 is the B-B ' sectional view among Fig. 4 of liquid-crystal apparatus.
Fig. 6 (a) is the vertical view of the related light incident side dustproof glass of the 1st embodiment of the present invention, and Fig. 6 (b) is the C-C ' sectional view among Fig. 6 (a).
Fig. 7 is near the partial enlarged drawing reflectance coating and the notch.
Fig. 8 (a)～Fig. 8 (d) is the manufacturing procedure picture of light incident side dustproof glass.
Fig. 9 (a) is the figure that the state of reflection of incident light and transmission is shown, and Fig. 9 (b) is the figure that the state of reflection of incident light in the conventional example and transmission is shown.
Figure 10 (a) is the vertical view of the related light incident side dustproof glass of the 2nd embodiment of the present invention, and Figure 10 (b) is the D-D ' sectional view among Figure 10 (a).
Figure 11 is near the partial enlarged drawing reflectance coating and the notch.
Figure 12 (a) is the vertical view of the related light incident side dustproof glass of the 3rd embodiment of the present invention, and Figure 12 (b) is the E-E ' sectional view among Figure 12 (a).
Figure 13 is near the partial enlarged drawing reflectance coating and the notch.
Figure 14 (a) is the vertical view of the related light incident side dustproof glass of the 4th embodiment of the present invention, and Figure 14 (b) is the F-F ' sectional view among Figure 14 (a).
Figure 15 is near the partial enlarged drawing reflectance coating and the notch.
Figure 16 (a) is the vertical view of the related light incident side dustproof glass of the 5th embodiment of the present invention, and Figure 16 (b) is the G-G ' sectional view among Figure 16 (a).
Figure 17 is near the partial enlarged drawing reflectance coating and the notch.
Figure 18 is the reflecting part of the related light incident side dustproof glass of the 6th embodiment of the present invention and near the partial enlarged drawing the notch.
Figure 19 is the vertical view that schematically illustrates the structure of the related projection type video device of the 7th embodiment of the present invention.
Label declaration
7: light entrance face; 8: end face; 10,20,30,40,50: as the light incident side dustproof glass of dustproof glass; 12: reflecting part 13: antireflection film; 14,16,17,18: notch; 15: light absorbing zone is a black layer; 19: packing material; 60: liquid-crystal apparatus; 100: electro-optical device; 110: shell; 140,160,170,180: cut sides; 150: transmissive type liquid crystal panel.
Embodiment
Below, each embodiment after the present invention specialized is described with reference to the accompanying drawings.
(the 1st embodiment)
Fig. 1 is the vertical view of the related electro-optical device of present embodiment 100.Fig. 2 is the A-A ' sectional view among Fig. 1 of electro-optical device 100.Fig. 3 is the exploded perspective view of electro-optical device 100.
In Fig. 1 and Fig. 2, electro-optical device 100 has liquid-crystal apparatus 60, shell 110, clasp (hook) 130 and flexible printing wiring substrate 120.
In Fig. 2, the peripheral part of liquid-crystal apparatus 60 is by shell 110 and clasp 130 clampings.Between liquid-crystal apparatus 60 and shell 110, be filled with packing material 19.In addition, on liquid-crystal apparatus 60, be connected with flexible printing wiring substrate 120 and draw from shell 110.
In Fig. 2, incident light 200 from top incident, becomes emergent light 300 downwards and outgoing with respect to paper.On the contrary, in Fig. 3, incident light 200 is with respect to paper incident upward from the below.Depicting incident angle among the figure as is 0 °, but incident in fact a little obliquely.For example, incident angle is between 0 °～15 °.
In Fig. 2 and Fig. 3, liquid-crystal apparatus 60 has transmissive type liquid crystal panel 150, be located at transmissive type liquid crystal panel 150 light incident side as the light incident side dustproof glass 10 of dustproof glass and be located at light-emitting face dustproof glass 70 on the light-emitting face.
Transmissive type liquid crystal panel 150 has transparent liquid crystal electrode base board (following table is shown transparency carrier) 90 and counter substrate 80.Counter substrate 80 is less than transparency carrier 90, and the peripheral part of transparency carrier 90 is to paste from the outstanding state of the outer peripheral edges of counter substrate 80.
Liquid-crystal apparatus 60 is described with reference to the accompanying drawings in further detail.
Fig. 4 is the vertical view of liquid-crystal apparatus 60.Fig. 5 is the B-B ' sectional view among Fig. 4 of liquid-crystal apparatus 60.
In Fig. 4 and Fig. 5, enclosing in the space that transparency carrier 90, counter substrate 80, sealant 86 by transmissive type liquid crystal panel 150 are surrounded has liquid crystal 85.Liquid crystal 85 injects from liquid crystal injecting port 93, seals by using sealant 92 to stop up liquid crystal injecting port 93.On part transparency carrier 90 and 80 opposed of counter substrate, that give prominence to from the outer peripheral edges of counter substrate 80, dispose input terminal 91, scan line drive circuit 95 and data line drive circuit 94.Wiring is connected with described flexible printing wiring substrate 120 on input terminal 91.In Fig. 5, incident light 200 from top incident, becomes emergent light 300 downwards and outgoing with respect to paper.
In Fig. 4 and Fig. 5, light incident side dustproof glass 10 has dustproof glass substrate 11, reflecting part 12 is reflectance coating 121, notch 14 and antireflection film 13.
As dustproof glass substrate 11, for example can use quartz, crystal, alkali-free glass etc.
In Fig. 5, antireflection film 13 is formed on the light entrance face 7 of dustproof glass substrate 11.
Light incident side dustproof glass 10 and counter substrate 80 are pasted by adhesive linkage 81.The refractive index of adhesive linkage 81 approaches the refractive index of light incident side dustproof glass 10 and the refractive index of counter substrate 80, thereby the interface that can be suppressed at adhesive linkage 81 is reflected.
In Fig. 5, light-emitting face dustproof glass 70 has dustproof glass substrate 71 and polaroid 73.Polaroid 73 sticks on the light-emitting face of dustproof glass substrate 71 by adhesive linkage 72.In addition, light-emitting face dustproof glass 70 is pasted by adhesive linkage 74 and transparency carrier 90.In adhesive linkage 72 and adhesive linkage 74, also identical with adhesive linkage 81, approach the refractive index of the material pasted, thereby the interface that can be suppressed at adhesive linkage 72,74 is reflected.But, polaroid 73 may not necessarily stick on the dustproof glass substrate 71.
Below, describing the related dustproof glass of present embodiment with reference to the accompanying drawings in detail is light incident side dustproof glass 10.
Fig. 6 (a) is the vertical view of light incident side dustproof glass 10, and Fig. 6 (b) is the sectional view that the C-C ' of Fig. 6 (a) locates.Fig. 7 is near the partial enlarged drawing reflectance coating 121 and the notch 14.
In Fig. 6, reflectance coating 121 is formed on the peripheral part of the light entrance face 7 of dustproof glass substrate 11.As reflectance coating 121, can use metal films such as chromium, aluminium, silver.
In Fig. 7, dustproof glass substrate 11 is bonded on the counter substrate 80 by adhesive linkage 81.The part of incident light 200 is by reflectance coating 121 reflections.On the other hand, the part of incident light 200 that incides transmissive type liquid crystal panel shown in Figure 5 150 inside becomes back light 400 by reflections such as element such as the interface of each parts that is present in transmissive type liquid crystal panel 150 inside, electrodes.
Below, the manufacture method of the light incident side dustproof glass 10 of present embodiment is described.Fig. 8 (a)～Fig. 8 (d) illustrates the manufacturing procedure picture of the light incident side dustproof glass 10 of present embodiment.Light incident side dustproof glass 10 is to cut off to cut apart by the large-size glass substrate 1 that will be formed with reflectance coating 2, antireflection film 3 and notch 4 to obtain.
Fig. 8 (a) is the formation operation of notch 4.
In Fig. 8 (a), on the light entrance face of large-size glass substrate 1, form reflectance coating 2 and antireflection film 3 in advance.Reflectance coating 2 is that evaporation, the sputter by metals such as chromium, aluminium, silver forms.The pattern of the rectangular ring of the reflectance coating 121 of light incident side dustproof glass 10 shown in Figure 5 forms across the amount of cutting (cutting り ろ) 5 and arranges in length and breadth.
Antireflection film 3 can form by vapour deposition method, sputtering method etc. at the dielectric film of known single or multiple lift.
Large-size glass substrate 1 with opposed 9 in the face that is formed with reflectance coating 2 and antireflection film 3 on, compress cutting blade (dicing blade) 501 and form notch 4 the rough surface faceization.The position that compresses cutting blade 501 is and the amount of cutting 5 and the reflectance coating 2 opposed positions of arranging across the amount of cutting 5.
Cast-cutting saw can use DISCO corporate system DFD600 or 6000 series of parallel doublet type (parallel dual type), and as cutting blade 501, the resinoid bond that can use the DISCO corporate system is #100～280 of K1A series.
In addition, except cast-cutting saw, can also utilize laser machine carry out uneven surfaceization.
Fig. 8 (b) and Fig. 8 (c) are the operations that large-size glass substrate 1 is cut into light incident side dustproof glass 10.
In Fig. 8 (b), by cutting blade 502 is compressed the amount of cutting 5, the groove of formation midway from the face 9 that is formed with notch 4 to the amount of cutting 5.
Cast-cutting saw can use and the identical instrument of uneven surface chemical industry preface, and as cutting blade 502, the metallic bond that can use the DISCO corporate system is that #400～500 of P1A series cut off.
In Fig. 8 (c), on the position face that is formed with reflectance coating 2 and antireflection film 3, corresponding with the groove that is formed on the amount of cutting 5 of large-size glass substrate 1, compress cutting blade 502, cut off large-size glass substrate 1, thereby shown in Fig. 8 (d), obtain a plurality of light incident side dustproof glass 10.
Fig. 9 (a) is the figure that the state of the reflection of incident light 200 of the reflectance coating 121 in the present embodiment and transmission is shown, and Fig. 9 (b) is the figure that schematically illustrates the state of the reflection of the incident light 200 in the conventional example and transmission.Do not consider antireflection film 13 herein.
In the conventional example shown in Fig. 9 (b), reflectance coating 121 is located at the light exit side of dustproof glass substrate 11.Incident light 200 becomes reflected light R1 and transmitted light T1 in the surface isolation of dustproof glass substrate 11.The light quantity of reflected light R1 is about about 3%～5% of incident light 200 integral body.Dustproof glass substrate 11 is crossed in transmitted light T1 transmission, is separated into reflected light R2 and transmitted light T2 by reflectance coating 121.The inside of dustproof glass substrate 11 is crossed in reflected light R2 transmission, becomes transmitted light T3 and reflected light R3 in the interfacial separation of glass and air.The light quantity of reflected light R1 and transmitted light T3 is added and measures, and it is about 50～55% of incident light 200 integral body.
Therefore, about 50～55% of incident light 200 by reflectance coating 121 shadings the no show transmissive type liquid crystal panel.As previously discussed, in the present embodiment, compare by the light quantity of reflectance coating 121 shadings of dustproof glass high by 10～20% with conventional example.
Below, the effect of notebook embodiment.
(1) reflectance coating 121 is located on the light entrance face 7 of dustproof glass substrate 11, thus can with incident light 200 on light entrance face 7 to external reflection.Therefore, improved by the light quantity of the light of shading in that image display area is overseas, can reduce the generation of parasitic light, can improve display quality.
(2) notch 14 is compared depression with the light-emitting face 6 of dustproof glass substrate 11, so compare in the situation of light-emitting face 6 reflections of dustproof glass substrate 11 towards the back light 400 of notch 14 with the inboard from transmissive type liquid crystal panel 150, the light of reflection is towards the outside on cut sides 140.Therefore, the generation of parasitic light can be reduced, display quality can be improved.
(3) surface roughness Ra by cut sides 140 shows as 0.5 μ m～concave-convex surface of 20 μ m and can make the light scattering of viewing area, so can reduce the light towards specific direction.Therefore, it is unequal to reduce demonstration, can improve display quality.
(4) reflectance coating 121 is reflectivity height of metal film and viewing area, so can reduce the light quantity that metal film is crossed in transmission, can reduce the generation of parasitic light, can improve display quality.
(5) reflectance coating 121 is metal films, so can become privileged reflection function.Therefore, but individual layer ground forms reflectance coating 121, so can easily form reflectance coating 121.
(6) reflectance coating 121 is located on the light entrance face 7 of dustproof glass substrate 11, so compare with the situation on being located at light-emitting face 6, can prolong the distance between reflectance coating 121 and the transmissive type liquid crystal panel 150.Therefore, even the temperature of reflectance coating 121 owing to the absorption of light is risen, also can reduce the influence of temperature to transmissive type liquid crystal panel 150, can alleviate the liquid crystal action and reduce the display quality reduction that causes.
(7) formation of notch 14 can use cutting blade 501 to carry out in the operation that large-size glass substrate 1 is cut into light incident side dustproof glass 10, can simplify working process.
(the 2nd embodiment)
Figure 10 (a) is the vertical view of the light incident side dustproof glass 20 of present embodiment, and Figure 10 (b) is the sectional view that the D-D ' of Figure 10 (a) locates.Figure 11 is near the partial enlarged drawing reflectance coating 121 and the notch 14.
In the present embodiment, on the surface of cut sides 140, be provided with light absorbing zone be black layer 15 aspect different with the 1st embodiment.
Below, the effect of notebook embodiment.
(8) not only by the reflection of notch 14 control back lights 400, also absorb back light 400, so can reduce the reflectivity of notch 14 by black layer 15.Therefore, can reduce by notch 14 reflection, can reduce the generation of parasitic light, can improve display quality towards the light of transmissive type liquid crystal panel 150.
(the 3rd embodiment)
Figure 12 (a) is the vertical view of the light incident side dustproof glass 30 of present embodiment, and Figure 12 (b) is the sectional view that the E-E ' of Figure 12 (a) locates.Figure 13 is near the partial enlarged drawing reflectance coating 121 and the notch 16.
In Figure 13, in the present embodiment, notch 16 be concave surface aspect different with the 1st embodiment.This notch 16 can form by the shape that changes cutting blade.Herein, for the shape of the concave surface of notch 16, roughly be crossed as the right angle with the light entrance face 7 of light incident side dustproof glass 30 and the length of normal degree that intersects with cut sides 160 along with shortening near end face 8 from light-emitting face 6.The surface of cut sides 160 can be a uneven surface, also can be shiny surface.
Below, the effect of notebook embodiment.
(9) cut sides 160 is inclined to back light 400 towards periphery reflection, thus can be further towards packing material 19 reflections from the inside of transmissive type liquid crystal panel 150 back light 400 towards notch 16.Light is absorbed or scattering in packing material 19, so can reduce the generation of parasitic light, can improve display quality.
(the 4th embodiment)
Figure 14 (a) is the vertical view of the light incident side dustproof glass 40 of present embodiment, and Figure 14 (b) is the sectional view that the F-F ' of Figure 14 (a) locates.Figure 15 is near the partial enlarged drawing reflectance coating 121 and the notch 17.
In Figure 15, in the present embodiment, in notch 17, be filled with packing material 19 aspect different with the 1st embodiment.The cut sides 170 of notch 17 can be a uneven surface, also can be shiny surface.
Below, the effect of notebook embodiment.
(10) by being filled in the packing material 19 in the notch 17, back light 400 is absorbed or scattering, so can further reduce the reflection of notch 17.Therefore, the generation of parasitic light can be reduced, display quality can be improved.
(11) packing material 19 absorbing light and the heat that produces can be delivered to shell 110.Therefore, can improve the cooling effect of transmissive type liquid crystal panel 150 by shell 110 heat radiations.
(the 5th embodiment)
Figure 16 (a) is the vertical view of the light incident side dustproof glass 50 of present embodiment, and Figure 16 (b) is the sectional view that the G-G ' of Figure 16 (a) locates.Figure 17 is near the partial enlarged drawing reflectance coating 121 and the notch 18.
In Figure 17,, different with the 4th embodiment aspect shortening near end face 8 at the length of normal degree that roughly is crossed as the right angle with light entrance face 7 and intersect with cut sides 180 for the notch 18 of present embodiment.In addition, cut sides 180 is a tabular surface.The surface of cut sides 180 can be a uneven surface, also can be shiny surface.
Below, the effect of notebook embodiment.
(12) except the effect of the 3rd embodiment and the 4th embodiment, because cut sides 180 is a tabular surface, so can be easy to process.
(the 6th embodiment)
Figure 18 is the reflecting part 12 of light incident side dustproof glass 50 of present embodiment and near the partial enlarged drawing the notch 16.
In Figure 18, be provided in a side of at the reflecting part 12 of present embodiment on the end face of shell 110 and to the central side of light incident side dustproof glass 50 prolong prolonging of portion 122 aspect different with the 3rd embodiment.
Most of transmission of incident light 200 is crossed the image display area of dustproof glass substrate 11 and is incided the inside of transmissive type liquid crystal panel 150, and the part of incident light 200 is as shown in figure 18 by reflecting part 12 reflections.
Below, the effect of notebook embodiment.
(13) except the effect of the 3rd embodiment, owing to prolonging of shell 110 portion 122 be made as reflecting part 12, so only portion 122 and can easily improve display quality by prolonging in the end face setting of shell 110.
(the 7th embodiment)
Figure 19 is the vertical view of structure that schematically illustrates the projection type video device 600 of present embodiment.Projection type video device 600 has the electro-optical device 100 shown in the respective embodiments described above.
As shown in figure 19, projection type video device 600 constitute the integrated lighting optical system 61 that has as light source, color separation optical system 62, relay optical system 63, the electro-optical device 100 the light beam that penetrates from light source modulated according to image information and to carry out the projection lens 66 of enlarging projection by the light beam after electro-optical device 100 modulation.
Integrated lighting optical system 61 is to be used for roughly throwing light on equably the optical system of image forming area of 3 transmissive type liquid crystal panel 150 (each color of light at red, green, blue is made as liquid crystal panel 150R, 150G, 150B respectively) of constituting electro-optical device 100, has light supply apparatus the 611, the 1st lens arra the 612, the 2nd lens arra 613, polarization conversion element 614 and overlapping lens 615.
As illuminator 616, adopt Halogen lamp LED.In addition, except Halogen lamp LED, can also adopt metal halide lamp, high-pressure mercury-vapor lamp etc.
As reverberator 617, adopt paraboloidal mirror.In addition, replace paraboloidal mirror, can also adopt the parts that parallelization concavees lens and off-axis paraboloids and ellipsoids mirrors are combined.
The 1st lens arra 612 possesses the lenslet of observing the profile with essentially rectangular shape from optical axis direction and is arranged in rectangular structure.Each lenslet will be divided into a plurality of segment beams from the light beam that illuminator 616 penetrates.The contour shape of each lenslet is set for and is presented and the shape of the image forming area of transmissive type liquid crystal panel 150 similar shapes roughly.For example, cun be 4: 3 o'clock at the horizontal linear foot of the image forming area of transmissive type liquid crystal panel 150 than (ratio of horizontal and vertical size), the horizontal linear foot of each lenslet is cun than also setting 4: 3 for.
The 2nd lens arra 613 has the structure roughly the same with the 1st lens arra 612, has lenslet and is arranged in rectangular structure.The 2nd lens arra 613 has with overlapping lens 615 makes the picture of each lenslet of the 1st lens arra 612 image in function on the transmissive type liquid crystal panel 150.
Particularly, the each several part light that converts a kind of polarized light to by polarization conversion element 614 finally roughly overlaps on the transmissive type liquid crystal panel 150 of electro-optical device 100 by overlapping lens 615.In the projection type video device 600 of the transmissive type liquid crystal panel 150 of using the type that polarized light is modulated, only can utilize a kind of polarized light, so from the light of the illuminator 616 of the random polarization that sends other kinds roughly half is not utilized.Therefore,, will all convert a kind of polarized light to, can improve the utilization ratio of the light in the electro-optical device 100 from the light beam that illuminator 616 penetrates by using polarization conversion element 614.
In addition, such polarization conversion element 614 is for example introduced in Japanese kokai publication hei 8-304739 communique.
Color separation optical system 62 has 2 dichronic mirrors 621,622 and catoptron 623, has to utilize dichronic mirror 621,622 will be separated into the function of the color of light of red (R), green (G), blue (B) these 3 kinds of colors from a plurality of segment beams that integrated lighting optical system 61 penetrates.
Relay optical system 63 has light incident side lens 631, relay lens 633, catoptron 632,634, and having to be the function that red light imports to transmissive type liquid crystal panel 150R by color separation optical system 62 isolated color of light.
At this moment, in the dichronic mirror 621 of color separation optical system 62, the red light composition and the transmission of green light composition of the light beam that penetrates from integrated lighting optical system 61, and blue light becomes sub reflector.Blue light by dichronic mirror 621 reflections is reflected by catoptron 623, arrives the transmissive type liquid crystal panel 150B of blue usefulness by field lens 618.This field lens 618 will become with respect to the parallel light beam of its central shaft (chief ray) from the each several part Beam Transformation that the 2nd lens arra 613 penetrates.The field lens 618 of light incident side that is located at other transmissive type liquid crystal panel 150G, 150R is also identical.
In addition, cross in the red light and green light of dichronic mirror 621 in transmission, green light arrives the transmissive type liquid crystal panel 150G of green usefulness by dichronic mirror 622 reflections by field lens 618.On the other hand, the red light transmission is crossed dichronic mirror 622 and by relay optical system 63, and, arrive the transmissive type liquid crystal panel 150R that red light is used by field lens 618.
In addition, use relay optical system 63 to be because the optical path length of red light is long than the optical path length of other color of light, so need prevent the utilization ratio reduction of the light that light diffusion etc. causes to red light.That is, be directly delivered to field lens 618 because incide the segment beam of light incident side lens 631.
Electro-optical device 100 has the structure identical with the respective embodiments described above, thus following only explanation roughly, and omit its detailed description.
Electro-optical device 100 is modulated the light beam of incident according to image information and is formed coloured image, and it has transmissive type liquid crystal panel 150R, 150G, 150B as optic modulating device; Be located at the light incident side dustproof glass 10 (20,30,40,50) on the light entrance face of each transmissive type liquid crystal panel 150R, 150G, 150B; The reflecting part 12 of the outer rim of the light entrance face 7 of covering light incident side dustproof glass 10 (20,30,40,50); Covering has the shell 110 of periphery of the liquid-crystal apparatus 60 of transmissive type liquid crystal panel 150R, 150G, 150B and light incident side dustproof glass 10 (20,30,40,50); And in the periphery of liquid-crystal apparatus 60 with the gap between the shell 110 absorbs light or the packing material 19 of scattering.
In addition, electro-optical device 100 has the cross-dichroic mirror 190 as color combining optical.
And light incident side dustproof glass 10 (20,30,40,50) has the notch 14 (16,17,18) on the outer rim of the light-emitting face 6 that is formed on light incident side dustproof glass 10 (20,30,40,50).
In addition, in Figure 19, only illustrate transmissive type liquid crystal panel 150R, 150G, 150B and cross-dichroic mirror 190, the demonstration of other structures is omitted.
On cross-dichroic mirror 190, the dielectric multilayer film of reflection red light and the dielectric multilayer film of reflect blue light become roughly X word shape along the layout setting of 4 right-angle prisms, by synthetic 3 color of light of these dielectric multilayer films.
Coloured image enlarging projection after projection lens 66 will be synthesized by the cross-dichroic mirror 190 of electro-optical device 100.
Below, the effect of notebook embodiment.
(14) electro-optical device 100 of projection type video device 600 has the structure identical with the respective embodiments described above, so the generation of parasitic light is few, display quality is good.
That is, the reflecting part 12 of being arranged to electro-optical device 100 covers the outer rim of the light entrance face 7 of light incident side dustproof glass 10 (20,30,40,50), thus towards the incident light of the outer rim of light entrance face 7 by reflecting part 12 and towards external reflection.Therefore, inner and tail off towards the generation of the parasitic light of transmissive type liquid crystal panel 150 by light incident side dustproof glass 10 (20,30,40,50), display quality improves.
In addition, the notch 14 (16,17,18) of light incident side dustproof glass 10 (20,30,40,50) is compared depression with the light-emitting face 6 of light incident side dustproof glass 10 (20,30,40,50), so different with the situation by the reflectance coating reflection of the light-emitting face of dustproof glass of prior art, from the inboard of transmissive type liquid crystal panel 150 towards the back light of notch 14 (16,17,18) by notch 14 (16,17,18) reflection towards packing material 19.Light is absorbed or scattering in packing material 19, so the generation of parasitic light tails off, display quality improves.
In addition, the invention is not restricted to described embodiment, can realize that the distortion, improvement etc. in the scope of purpose of the present invention comprise in the present invention.
For example, reflectance coating 121 also can be a multilayer film.Also bonding film can be set on the surface of dustproof glass substrate 11, form metal film at its surperficial light incident side.
Claims (18)
1. dustproof glass, it is located on the light entrance face of transmissive type liquid crystal panel, it is characterized in that, and described dustproof glass has:
Reflecting part, it is located at the outer rim of the light entrance face of described dustproof glass; And
Notch, it is formed on the outer rim of the light-emitting face of described dustproof glass.
2. dustproof glass according to claim 1 is characterized in that,
The length of normal degree that roughly is crossed as the right angle with the light entrance face of described dustproof glass and intersects with the cut sides of described notch is along with shortening near the end face of described dustproof glass.
3. dustproof glass according to claim 2 is characterized in that,
The surface roughness Ra of described cut sides is 0.5 μ m～20 μ m.
4. according to any described dustproof glass in the claim 1～3, it is characterized in that,
Described reflecting part is a metal film.
5. according to any described dustproof glass in the claim 1～3, it is characterized in that,
Described notch has light absorbing zone.
6. dustproof glass according to claim 4 is characterized in that,
Described notch has light absorbing zone.
7. an electro-optical device is characterized in that, this electro-optical device has:
Transmissive type liquid crystal panel;
Dustproof glass, it is located on the light entrance face of described transmissive type liquid crystal panel;
Reflecting part, it covers the outer rim of the light entrance face of described dustproof glass;
Shell, its covering has the periphery of the liquid-crystal apparatus of described transmissive type liquid crystal panel and described dustproof glass; And
Packing material, it absorbs or scattering light in the periphery of described liquid-crystal apparatus and the gap between the described shell,
Described dustproof glass has notch, and this notch is formed on the outer rim of the light-emitting face of described dustproof glass.
8. electro-optical device according to claim 7 is characterized in that,
Described packing material also is filled in the gap between described notch and the described transmissive type liquid crystal panel.
9. electro-optical device according to claim 7 is characterized in that,
Described reflecting part is provided in a side of on the end face of described shell and prolongs prolonging of to the central side of described dustproof glass and portion.
10. electro-optical device according to claim 8 is characterized in that,
Described reflecting part is provided in a side of on the end face of described shell and prolongs prolonging of to the central side of described dustproof glass and portion.
11. electro-optical device according to claim 7 is characterized in that,
The length of normal degree that roughly is crossed as the right angle with the light entrance face of described dustproof glass and intersects with the cut sides of described notch is along with shortening near the end face of described dustproof glass.
12. electro-optical device according to claim 11 is characterized in that,
The surface roughness Ra of the described cut sides of described notch is 0.5 μ m～20 μ m.
13. electro-optical device according to claim 7 is characterized in that,
Described reflecting part is provided in a side of the metal film on the outer rim of light entrance face of described dustproof glass.
14. electro-optical device according to claim 8 is characterized in that,
Described reflecting part is provided in a side of the metal film on the outer rim of light entrance face of described dustproof glass.
15. any described electro-optical device according in the claim 7～14 is characterized in that,
Described notch has light absorbing zone.
16. a projection type video device, it has the electro-optical device the light beam that penetrates from light source modulated according to image information and to carried out the projection lens of enlarging projection by the light beam after the described electro-optical device modulation, it is characterized in that,
Described electro-optical device has any described dustproof glass in the claim 1～6.
17. a projection type video device, it has the electro-optical device the light beam that penetrates from light source modulated according to image information and to carried out the projection lens of enlarging projection by the light beam after the described electro-optical device modulation, it is characterized in that,
Described projection type video device has any described electro-optical device in the claim 7～15.
18. according to claim 16 or 17 described projection type video devices, it is characterized in that,
Described electro-optical device has:
Transmissive type liquid crystal panel;
Shell, its covering has the periphery of the liquid-crystal apparatus of described transmissive type liquid crystal panel and described dustproof glass; And
Packing material, it absorbs or scattering light in the periphery of described liquid-crystal apparatus and the gap between the described shell.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-332892 | 2006-12-11 | ||
| JP2006332892 | 2006-12-11 | ||
| JP2006332892 | 2006-12-11 | ||
| JP2007-262992 | 2007-10-09 | ||
| JP2007262992 | 2007-10-09 | ||
| JP2007262992A JP4862799B2 (en) | 2006-12-11 | 2007-10-09 | Dust-proof glass, electro-optical device and projection-type image device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101201474A CN101201474A (en) | 2008-06-18 |
| CN101201474B true CN101201474B (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101933699A Expired - Fee Related CN101201474B (en) | 2006-12-11 | 2007-12-10 | Dust-proof glass, and electro-optic device and projection type image display device using the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4862799B2 (en) |
| CN (1) | CN101201474B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI492198B (en) * | 2014-02-07 | 2015-07-11 | Au Optronics Corp | Display device |
| JP2016029431A (en) * | 2014-07-25 | 2016-03-03 | セイコーエプソン株式会社 | Electro-optic device, manufacturing method thereof, and electronic apparatus |
| WO2016194323A1 (en) * | 2015-05-29 | 2016-12-08 | シャープ株式会社 | Electronic apparatus and method for manufacturing same |
| CN110026913B (en) * | 2019-04-17 | 2022-03-11 | 江苏友美工具有限公司 | Diamond grinding tool bit and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004037874A (en) * | 2002-07-03 | 2004-02-05 | Seiko Epson Corp | Electro-optic apparatus housed in packaging case and projection display apparatus |
| JP2006072060A (en) * | 2004-09-03 | 2006-03-16 | Seiko Epson Corp | Electro-optical device, and electronic device |
-
2007
- 2007-10-09 JP JP2007262992A patent/JP4862799B2/en not_active Expired - Fee Related
- 2007-12-10 CN CN2007101933699A patent/CN101201474B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101201474A (en) | 2008-06-18 |
| JP2008170946A (en) | 2008-07-24 |
| JP4862799B2 (en) | 2012-01-25 |
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