CN100504455C - External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter - Google Patents
External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter Download PDFInfo
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- CN100504455C CN100504455C CNB2006100062272A CN200610006227A CN100504455C CN 100504455 C CN100504455 C CN 100504455C CN B2006100062272 A CNB2006100062272 A CN B2006100062272A CN 200610006227 A CN200610006227 A CN 200610006227A CN 100504455 C CN100504455 C CN 100504455C
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Abstract
An external light-shielding layer capable of enhancing a visible light transmittance and a contrast ratio and preventing Moire fringe and Newton ring phenomena, a display filter including the external light-shielding layer, and a display device including the display filter. The external light-shielding layer includes a transparent resin matrix, and a plurality of light-shielding patterns formed on the transparent resin matrix and spaced apart from each other in a predetermined interval, wherein a bias angle (alpha) formed between a traveling direction of the light-shielding patterns and the longer side of the matrix is in a range of about 5 to 80 degrees.
Description
Technical field
The present invention relates to the ambient light screen layer, be used to comprise the light filter (filter) of display device of ambient light screen layer and the display device that comprises described light filter.Particularly, the present invention relates to comprise the light filter that can use in the display device of the ambient light screen layer of brighter indoor raising contrast ratio and More (Moire) phenomenon, and the display device that comprises described demonstration light filter.
Background technology
Be orientated along with modern society becomes information-based all the more, image display device and equipment and technology are also advancing, and these devices become extensive gradually.Especially, image display device is extensive use of in such as TV screen and PC monitor.Thin widescreen of building has become the display device of main flow.
Especially, Plasmia indicating panel (PDP) receives an acclaim to replace cathode ray tube (CRT) as display device of future generation, because PDP is very thin, has bigger screen, and can be easy to make.The PDP device is based on the gas discharge phenomenon display image, and shown superior display characteristic, and for example, height show off one's talent or competence power, high brightness and high-contrast do not have the visual angle of after image and broad.
In the PDP device, when direct current (DC) or alternating current (AC) voltage are applied to electrode, the gas plasma discharge takes place, produce ultraviolet (UV) light.The UV emission excites adjacent phosphor with visible emitting.
Although have above-mentioned advantage, PDP has the several challenges relevant with drive characteristic, comprises increase, near infrared (NIR) emission (emission), phosphor surface reflection and because the colour purity that the orange-colored light of being launched from the neon (Neon), helium (He) or the xenon (Xe) that are used as sealing gas thickens of electromagnetism (EM) radiation.
May produce adverse influence and cause electronic installation cisco unity malfunction the people by electromagnetism (EM) radiation that PDP produced such as wireless telephone or telepilot.Like this, use such PDP, just need be radiated predetermined level or littler by the EM that shielding reduces to launch from PDP.Different PDP light filters are used as such shielding, and reduce unwanted reflection and improve colour purity.For example, the different PDP light filters with EM function of shielding and NIR ripple function of shielding can use with PDP.
But traditional PDP light filter can not prevent ambient light entering surface board component in brighter indoor conditions.The ambient light that enters described panel assembly may be interfered with the light that the discharge cell from panel assembly is launched, and has reduced the contrast (contrast) of the panel of operating in brighter indoor conditions thus, has finally worsened the image display capability of PDP.
In addition, in traditional PDP light filter, the cause of the interference fringe that moore phenomenon produces owing to being formed between pixel and the PDP light filter when two or more periodic patterns produces, and this may worsen the image displaying quality of PDP.
Summary of the invention
The invention provides a kind of ambient light screen layer, described ambient light screen layer can improve in brighter indoor contrast ratio and prevent moore phenomenon.
The present invention also provides a kind of demonstration light filter (displayfilter) that comprises the ambient light screen layer.
The present invention also provides and has comprised the display device that shows light filter.
Above-mentioned purpose of the present invention and other purpose, feature and advantage are after those of ordinary skill has been read following instructions and become apparent.
According to an aspect of the present invention, a kind of ambient light screen layer is provided, be used to show light filter, described ambient light screen layer comprises transparent resin matrix (matrix), and be formed on a plurality of light shield patterns on the described transparent resin matrix and be separated from each other with predetermined interval, wherein between the long side of the transmission direction of light shield pattern and matrix formed drift angle (α) in the scope that scope about 5-80 is spent.
According to a further aspect of the invention, a kind of demonstration light filter is provided, show that light filter comprises the light filter base portion, and be arranged on the ambient light screen layer on the plane of light filter base portion and have the transparent resin matrix, with a plurality of lip-deep light shield patterns that are formed on the transparent resin matrix, and be separated from each other with predetermined interval, wherein be formed on formed drift angle (α between the long side of the transmission direction of light shield pattern and matrix; Bias angle) in the scope of about 5-80 degree of scope.
In accordance with a further aspect of the present invention, a kind of demonstration light filter that comprises transparent substrates is provided, be formed on the ambient light screen layer on the transparent substrates and have transparent resin matrix and the lip-deep a plurality of light shield patterns that are formed on the transparent resin matrix, and be separated from each other, and be formed on conduction EM radiation shield on the transparent substrates with the pattern of screen cloth (mesh) with predetermined interval.Herein, the drift angle poor (scope of β-α) is from about 5-40 degree or from 50-75 degree, suppose the drift angle poor (β-α) be formed on from the drift angle (β) between the long side of the imaginary plane of screen patterns extension and matrix and be formed on the transmission direction of light shield pattern and the long side of matrix between drift angle (α) between generation.
According to another aspect of the invention, a kind of display device is provided, comprise panel assembly with substrate and back substrate before toward each other transparent of setting, and a plurality of unit (cell) between substrate and the back substrate before being arranged on, be directly connected to the ambient light screen layer of the preceding substrate of panel assembly, and towards the demonstration light filter of extraneous light shielding layer and have antireflection (AR) function of shielding and/or EM radiation shield function, near infrared ray (NIR) ripple function of shielding, perhaps its combination.
According to a further aspect of the invention, a kind of display device is provided, comprise having substrate and the panel assembly of back substrate and a plurality of unit between preceding substrate and the back substrate before toward each other transparent of setting, and towards the demonstration light filter of the preceding substrate of panel assembly.
According to an aspect of the present invention, provide a kind of ambient light screen layer that is used to show light filter, described ambient light screen layer comprises: substantially transparent resin base portion; And a plurality of light shield patterns, described a plurality of light shield pattern is formed on the fundamental matrix and with predetermined interval and is separated from each other, wherein be formed on drift angle (α) between the long side of the transmission direction of light shield pattern and matrix in the scopes of about 5-80 degree, the ambient light screen layer is configured to towards the panel assembly that comprises a plurality of pixels, when described drift angle (α) about 5-10 the degree scopes in the time, described panel assembly has the pixel pitch of about 0.5-2.5mm, and the light shield pattern has the pitch of about 0.07-0.11mm.
According to an aspect of the present invention, provide a kind of demonstration light filter, having comprised: the light filter base portion; And ambient light screen layer, be arranged on the plane of light filter base portion and have the resin matrix of substantially transparent and be formed on lip-deep a plurality of light shield patterns of matrix and be separated from each other with predetermined pitch, wherein in the drift angle (α) that forms between the long side of the transmission direction of light shield pattern and matrix in the scopes of about 5-80 degree, the ambient light screen layer is configured to towards the panel assembly that comprises a plurality of pixels, when described drift angle (α) about 5-10 the degree scopes in the time, described panel assembly has the pixel pitch of about 0.5-2.5mm, and the light shield pattern has the pitch of about 0.07-0.11mm.
According to a further aspect of the invention, provide a kind of demonstration light filter, having comprised: transparent substrates; The ambient light screen layer, a plurality of light shield patterns that are formed on the transparent substrates and have the transparent resin matrix and be formed on the surface of matrix and be separated from each other with predetermined interval; And be formed on conduction EM radiation shield on the transparent substrates with screen patterns, wherein poor (scope of β-α) is from about 5-40 degree or from 50-75 degree in the drift angle, the drift angle poor (β-α) the drift angle (β) between the long side that is formed on the imaginary plane of extending and matrix from screen patterns and be formed on the transmission direction of light shield pattern and the long side of matrix between drift angle (α) between generation, show that wherein light filter is configured to towards the panel assembly that comprises a plurality of discharge cells, described panel assembly has the pixel pitch of about 0.5-2.5mm, described light shield pattern has the pitch of about 0.07-0.11mm, and described screen patterns has the pitch of about 0.25-0.35mm.
Description of drawings
Above-mentioned and/or further feature of the present invention and advantage will from the following explanation of embodiment and in conjunction with the accompanying drawings and detail knowledge to, wherein:
Fig. 1 is the decomposition diagram of Plasmia indicating panel (PDP) according to an embodiment of the invention;
Fig. 2 shows the viewgraph of cross-section of PDP light filter according to an embodiment of the invention;
Fig. 3 is to use the viewgraph of cross-section of the amplification of the ambient light screen layer in the PDP light filter shown in Fig. 2;
Fig. 4 A is the decomposition diagram according to embodiments of the invention explanation PDP, and Fig. 4 B is the viewgraph of cross-section of being got along the line B-B ' shown in Fig. 4 A;
Fig. 5 A-5H is the viewgraph of cross-section that has shown according to the modified example of ambient light screen layer of the present invention;
Fig. 6 shows the ambient light screen layer that separates from PDP light filter as shown in Figure 2 and the decomposition diagram of EM radiation shield;
Fig. 7 A is the decomposition diagram that shows PDP light filter according to another embodiment of the invention, and Fig. 7 B is the viewgraph of cross-section that shows the PDP that is included in PDP light filter as shown in Figure 7A;
Fig. 8 is the decomposition diagram that shows PDP according to another embodiment of the invention;
Fig. 9 A is the decomposition diagram that shows PDP according to another embodiment of the invention, and Fig. 9 B is the viewgraph of cross-section of being got along the line B-B ' shown in Fig. 9 A.
Embodiment
Advantages and features of the invention and realize that its method can describe by the detailed description and the accompanying drawing of reference preferred embodiment.But the present invention can implement with multiple different form, and the detailed description of certain embodiments can not be considered to the present invention is limited to these embodiment; But the open of these embodiment passes to those of ordinary skill with notion of the present invention.The present invention limits by appending claims, and identical reference number is quoted identical parts in whole instructions.
The present invention can be applied to different displays, comprise such as using the matrix pattern pixel to realize the large-sized monitor of colored Plasmia indicating panel (PDP), organic light emitting diode display (OLED), LCD (LCD) or the Field Emission Display (FED) that shows of RGB, such as the small-size display of PDA(Personal Digital Assistant), trivial games device display window or mobile phone display window, flexible display etc.Especially, the present invention can be used for being installed in the display of the public's facility that is used for indoor application and the display with outdoor utility of higher ambient light effectively.When after this PDP and PDP light filter will describe by example, those of ordinary skill was appreciated that other display and the light filter that the present invention also can be applied to as above to be quoted.
Making light shield pattern used in this invention is that the light that is used for stopping external environment enters its matrix on being installed in, and such as being secret note, black matrix or black ripple (black wave).Be formed on the profile that the light shield pattern on the predetermined matrix can have wedge type or flattened type.
PDP light filter and comprise that its PDP describes with reference to the accompanying drawings according to an embodiment of the invention.
Fig. 1 is the decomposition diagram of Plasmia indicating panel (PDP) 100 according to an embodiment of the invention.With reference to Fig. 1, PDP 100 comprise the upper surface of housing 110, covering shell 110 lid 150, be contained in the drive circuit board 120 in the housing 110, and the panel assembly 130 and the PDP light filter 200 that comprise the discharge cell (not shown) that gas discharge wherein takes place.PDP light filter 200 comprises by the formed conductive layer (not shown) of the material that has good electrical conductivity on the transparent substrates (not shown).Conductive layer is grounding to housing 110 by covering 150; That is, before it arrived the observer, the conductive layer of the EM radiation that is produced from panel assembly 130 by PDP light filter 200 was grounding to and covers 150 and housing 110.
After this, provide the PDP light filter 200 of shieldings such as EM radiation, NIR emission, ambient light at first to be illustrated, and comprise that the PDP of PDP light filter 200 and panel assembly 130 will be illustrated then.
Fig. 2 is the viewgraph of cross-section that PDP light filter 200 is described according to an embodiment of the invention.And Fig. 3 is the amplification sectional view of employed ambient light screen layer in as shown in Figure 2 the PDP light filter 200.
With reference to Fig. 2,3, PDP light filter 200 comprises light filter base portion 270, the different functional layer on described light filter base portion 270 comprises transparent substrates 210 and is arranged on transparent substrates 210, and ambient light screen layer 230.
Herein, light filter base portion 270 comprises transparent substrates 210, is arranged on the lip-deep anti-reflecting layer 250 of transparent substrates 210, and the other lip-deep EM radiation shield 220 that is arranged on transparent substrates 210.But the stacked order of transparent substrates 210, anti-reflecting layer 250 and EM radiation shield 220 can change.Although current embodiment of the present invention shows that EM radiation shield and anti-reflecting layer form separately, the invention is not restricted to this; That is, light filter base portion 270 can comprise one or more layer, and each layer can have EM radiation shield function, antireflection (AR) function, perhaps its combination.
Light filter base portion 270 can have aforesaid EM radiation shield function, antireflection (AR) function, but it also can only have one of EM radiation shield function, antireflection (AR) function.
Ambient light screen layer 230 is set on the surface of light filter base portion 270.According to embodiment as shown in Figure 2, ambient light screen layer 230 is arranged on the surface of the light filter base portion 270 relative with panel assembly 130; That is, when PDP light filter 200 is installed in the PDP (not shown) on the side relative with the observer.Alternatively, ambient light screen layer 230 also can be arranged on the other surface of light filter base portion 270.In this case, can realize being set at the similar function and the effect of a lip-deep situation of light filter base portion 270 to ambient light screen layer 230.
With reference to Fig. 2,3, ambient light screen layer 230 comprises support member 232, is arranged on the lip-deep matrix 234 of support member 232, and is arranged on a plurality of light shield patterns 236 with wedge secret note in the matrix 234, prevents ambient light entering surface board component.In an illustrated embodiment, a plurality of light shield patterns 236 are formed on the transparent resin matrix and on predetermined interval and are separated from each other.
Herein, the matrix 234 with light shield pattern 236 can be set directly on the light filter base portion 270.But as shown in Figure 2, matrix (matrix) 234 also can be arranged on the light filter base portion 270 by support member 232.Support member 232 supports the matrix 234 with light shield pattern 236.The embodiment of Fig. 2 has shown that matrix 234 is connected to the surface of light filter base portion 270 by support member 232, the invention is not restricted to this, and consider that support member 232 is used to proppant matrix 234, when ambient light screen layer 230 was set on the other surface of light filter base portion 270, matrix 234 also can be directly connected to light filter base portion 270.
According to embodiments of the invention, support member 232 can be the transparent resin film to the UV optical transparency, for example, and polyethylene terephthalate (PET), polycarbonate (PC) or Polyvinylchloride (PVC).Alternatively, support member 232 can be the layer with intrinsic filter properties, corrects layer 240 or EM radiation shield 220 such as anti-reflecting layer 250, color.
The formation method of light shield pattern 236 does not need to limit especially in the present invention, but can be by wherein using the hot-extrusion method of thermoplastic resin, perhaps wherein thermoplastic or thermosetting resin are filled in the matrix 234 of the opposite pattern of the light shield pattern that has and be delivered to it 236 molded then compression moulding method and realize.In addition, when the UV curable resin that forms matrix 234 has antireflection (AR) function of shielding, EM radiation shield function, color adaptation function, perhaps during its combination, ambient light screen layer 230 also can be carried out these functions.
The light shield pattern 236 of formation ambient light screen layer 230 absorbs ambient light 320 and prevents its entering surface board component or reflect incident light 310 from panel assembly fully towards the observer.Can obtain higher transmission of visible light and contrast ratio like this.
Usually, PDP need have higher transmission of visible light and higher contrast ratio.The contrast ratio of PDP can be represented by following formula 1:
When being allowed to from panel assembly institute emitted light beams by the PDP light filter when increasing the transmissivity of PDP, the brightness of black light and the brightness of white light increase.Like this, when the brightness of PDP increased, contrast ratio reduced relatively.Traditional PDP uses and comprises that the color rectification film that comprises black colorant increases the PDP light filter of contrast ratio, and this transmissivity with the PDP light filter is reduced to cost.In order to use so traditional PDP to obtain the contrast ratio of 120:1, transmission of visible light must be reduced to about 40.
When the area of the base section 236a of light shield pattern 236 is 20～50% to the ratio of the area on the surface of matrix 234, can realize minimum transmission loss and maximum contrast ratio.When the area of the base section 236a of light shield pattern 236 is 20～35% to the ratio of the area on the surface of matrix 234, can obtain more favourable effect.Use comprises that the PDP of the PDP light filter 200 of above-mentioned ambient light screen layer 230 can realize contrast ratio 250:1 or bigger, keeps transmission of visible light 50% or bigger simultaneously.
Simultaneously, ambient light screen layer 230 has 70% or bigger transmission of visible light.Incident light 310 relative ambient light screen layers 230 from panel assembly almost vertically incide on the ambient light screen layer 230.Among the incident light 310 from panel assembly, some incident lights 310 are absorbed in the light shield pattern 236, and most of incident light 310 directly by matrix 234, has increased the transmissivity of PDP towards the observer thus.
Moire fringe (Moire fringe) can by panel assembly (referring to Fig. 4 A 600) the periodic pattern of discharge cell and the periodic pattern of the light shield pattern 236 of ambient light screen layer 230 form.Term " Moire fringe " just is used to indicate the interference fringe that is produced when stacked when two or more periodic patterns.In order to prevent such Moire fringe, as shown in Figure 3, discharge cell and light shield pattern 236 are alternately settled, and the longer side of the imaginary plane of light shield pattern 236 and matrix 234 forms predetermined angle like this.Herein, in order to prevent Moire fringe, by the drift angle that crossing angle limited (α) that between the longer side of the imaginary plane of light shield pattern 236 and matrix 234, produces preferably in the scopes of about 5-80 degree.
Execution is according to the optical measurement of the Moire fringe of the variation in drift angle (α), and the result sums up in table 1.Use has the ambient light screen layer 230 of the light shield pattern 236 of the secret note that is configured as the pitch P2 with about 0.07-0.11mm, have the pixel pitch (referring to the P1 of Fig. 4 A) of about 0.5-2.5mm panel assembly (with reference to figure 4A 600) be used to give 13 tests that each has the test samples of drift angle (α) 0 degree, 4 degree, 5 degree, 10 degree, 20 degree, 35 degree, 40 degree, 50 degree, 60 degree, 70 degree, 80 degree, 81 degree, 90 degree respectively.Then, check to determine because the pixel of panel assembly (referring to Fig. 4 A 600) and the light shield pattern 236 of ambient light screen layer 230 between the moore phenomenon that interference took place whether take place.
(zero: moore phenomenon does not take place; *: moore phenomenon takes place)
As shown in table 1, the generation of moore phenomenon can be determined according to pitch in the light shield pattern 236 and change at interval.From table 1 obviously, when drift angle (α) in the scopes of about 5-80 degree, no matter moore phenomenon does not take place for the spacing of light shield pattern 236 and change at interval.In addition, confirmed when drift angle (α) about 5-10 the degree scopes in the time moore phenomenon generation can more effectively be prevented.
Because the moore phenomenon that cause caused of the interference between panel assembly and the light shield pattern 236 can be adjusted by pixel pitch P1, the P2 that regulates light shield pattern 236.But, extremely difficult pixel pitch P1, the P2 of controlling exactly.Like this, in order more effectively to prevent moore phenomenon, the light shield pattern 236 of ambient light screen layer 230 can be placed in predetermined drift angle (α) panel assembly (with reference to figure 4A 600) in.
Forward Fig. 2 to, light filter base portion 270 comprises lip-deep EM radiation shield 200 that is arranged on transparent substrates 210 and the other lip-deep anti-reflecting layer 250 that is arranged on transparent substrates 210.But, the invention is not restricted to above-mentioned stacked structure, the stacked order of transparent substrates 210, anti-reflecting layer 250 and EM radiation shield 200 can be carried out multiple modification.
The example of transparent organic polymer body comprises acryl (acryl) and polycarbonate, but the invention is not restricted to above-mentioned example.Transparent substrates 210 can have higher transparency and thermotolerance.Polymer structure or stacked polymer structure can be used as transparent substrates 210.Transparent substrates 210 can have 80% or the higher clarity of higher transmission of visible light, and the good heat-resistant of 50 ℃ or higher glass transition temperature.The polymeric foam material can be any transparent material in the visible wavelength range, and specific example includes, but are not limited to polyethylene terephthalate (PET), polysulfones (PS), polyethersulfone (PES), polystyrene, PEN (polyethylene naphthalate), polyacrylate, polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyimide, triacetyl cellulose (TAC) and polymethylmethacrylate (PMMA).PET is because price, heat resistance and transparency are more preferred.
In order to shield the EM radiation, just must cover the surface of display with high conductive structure.Like this, EM radiation shield 220 can be the multi-layer transparent electroconductive film that transparent membrane obtained by stacked conductive mesh film (mesh film) or metallic film and higher refractive index.The embodiment of Fig. 2 has shown that EM radiation shield 220 is set at the surface of transparent substrates 210, promptly on the panel assembly side, still the invention is not restricted to this.
Herein, the conductive mesh film can be a grounded metal screen cloth film, perhaps coating metal, synthetic resin or metal fibre screen cloth film.The example of useful conductive mesh film comprises any metal material with good conductivity and workability, such as copper, chromium, nickel, silver, molybdenum, tungsten or aluminium.
The transparent membrane of the more high index of refraction of multi-layer transparent electroconductive film can shield the EM radiation by indium tin oxide (ITO) manufacturing.Multi-layer transparent electroconductive film can be by the metallic film of gold, silver, copper, platinum or palladium manufacturing and by the stacked structure that replaces of the more high refractive index transparent film of indium oxide, tin ash or zinc paste manufacturing.
The metallic film of multi-layer transparent electroconductive film can be formed by silver (Ag) or silver alloy.Silver provides good electrical conductivity in stacked structure, infrared reflection and transmission of visible light; It is unsettled that but silver is physical chemistry, and owing to the environmental factor such as pollutant, water vapour, heat or light is easy to worsen.Like this, comprise from the silver alloy of gold, platinum, palladium, copper, indium or selected at least one stable metal of tin and can be used.
The higher refractive index transparent membrane of multi-layer transparent electroconductive film allows visible light transmissive and prevents that difference by the refractive index between itself and the metallic film from making the visible light reflection.For example, higher refractive index transparent membrane can be by the oxide such as the metal of indium, titanium, zirconium, bismuth, tin, zinc, antimony, tantalum, cerium, neodymium (neodium), lanthanum, thorium, magnesium, potassium or its combination, and perhaps zinc sulphide forms.
Although not shown, light filter base portion 270 may further include the NIR screen layer.The NIR screen layer is used for from causing the stronger NIR radiation of panel assembly shielding such as wireless telephone or telepilot cisco unity malfunction.
Multi-layer transparent electroconductive film as EM radiation shield 220 also has the NIR shield effectiveness.Like this, NIR and EM radiation can only shield by EM radiation shield 220 and not have an independent NIR screen layer.Certainly, in this case, the NIR screen layer can form separately.
In a typical embodiment, the conductive mesh film also can be used as EM radiation shield 220.In this case, comprise can absorption of N IR wavelength the NIR polymer based resin that absorbs colorant can be used for the NIR radiation is masked from panel assembly.For example, NIR absorption colorant can be from cyanine, anthraquinone, naphthoquinones, phthalocyanine, naphthalene phthalocyanine, diimoniums and the selected toner of nickel dithiol complex compound (nickeldithiol complex).Usually, PDP on the wavelength coverage of broad, produce stronger NIR and, therefore need to use can be on short wavelength coverage the NIR screen layer of absorption of N IR.
In a typical embodiment, transparent conductive film also can be used as EM radiation shield 220.Transparent conductive film can show the EM radiation shield function lower than above-mentioned conductive mesh film, but EM radiation shield function can be replenished or strengthens by metal powder being added to light shield pattern 236.
In the embodiment as Fig. 2, anti-reflecting layer 250 is set to EM radiation shield 220 on the apparent surface of transparent substrates 210.But, the invention is not restricted to the stacked order of the above-mentioned EM radiation shield 220 that illustrates, transparent substrates 210 and anti-reflecting layer 250.Preferably, as shown in Figure 2, anti-reflecting layer 250 promptly is formed on the opposite side of panel assembly in observer's side of the PDP that comprises PDP light filter 200.Anti-reflecting layer 250 has reduced extraneous reflection of light, improves observability thus.
Referring again to Fig. 2, PDP light filter 200 may further include on wavelength coverage 580-600nm has transmissivity 60% or bigger color rectification layer 240.Color is corrected layer 240 by reducing or regulating red (R), green (G) and blue (B) change or correct color balance.
Usually, the red visible light of launching from plasma in panel assembly is shown as orange-colored light.Traditional color is corrected layer and is corrected to the red color of carrying out from having the orange of wavelength coverage 580-600nm.But color is corrected layer 240 and is orangely had 60% or bigger transmissivity for what have wavelength coverage 580-600nm, can reduce or get rid of the color rectification from orange to redness like this.
From the reason of the strong orange-colored light radiation of panel assembly is because be shown as orange from the light of plasma emission and the folded light beam by the ambient light that panel assembly transmitted.In PDP light filter 200 of the present invention, ambient light screen layer 230 prevents ambient light 320 entering surface board components, causes suitable the reducing as orange photoemissive incident light 310.Like this, PDP light filter 200 can improve colour purity, and does not use or seldom be used for the colorant of orange rectification.For example, when brighter indoor (150lux) of (50IRE) goes up and measures among color coordinates use RGB color is being used for the IRE scale, the zone of measured color coordinates is 66% to the ratio in the zone of the inherent colour coordinate on the panel assembly that does not have PDP light filter 200, and is 86% on the panel assembly with PDP light filter 200.This has disclosed PDP light filter 200 of the present invention higher colour purity is provided.
Color is corrected layer 240 and is used different colorants to increase the reproduction range and the raising screen acutance of display.Colorant can be dyestuff or pigment.Colorant can be the toner with neon light shield function, as anthraquinone, cyanine, azo, stilbene, phthalocyanine and methine (methine), but the invention is not restricted to this.The type and the concentration of colorant are not particularly limited herein, because they are determined by absorbing wavelength, absorption coefficient and the required transmissison characteristic of specific demonstration.
The layer or the film that constitute PDP light filter 200 can be connected to each other by clear binder or cementing agent.The specific example of bonding medium comprises acryl, silicones, polyvinyl butyral, ethylene vinyl acetate (ethylenevinylacetate), polyvinylether, saturated amorphous polyester, melamine formaldehyde resin etc.
The PDP light filter 200 of Xing Chenging has 50% or bigger transmission of visible light and 250:1 or bigger contrast ratio in indoor brighter like this.In addition, by the long side of PDP light filter 200 relative light shield patterns 236 and matrix 234 upward being settled in predetermined drift angle (α) and preventing effectively.
Up to the present, PDP light filter 200 is illustrated; After this, the PDP that comprises PDP light filter 200 describes with reference to Fig. 4 A, 4B.
Fig. 4 A is the decomposition diagram of PDP according to an embodiment of the invention, and Fig. 4 B is the viewgraph of cross-section of being got along the line B-B ' shown in Fig. 4 A.
With reference to Fig. 4 A, 4B, PDP comprises PDP light filter 200 and panel assembly 600.PDP light filter 200 as mentioned above, and like this, detailed explanation will be omitted.After this, will describe panel assembly 600 in detail.
With reference to Fig. 4 A, a plurality of maintenance electrode pairs 615 are set in the lip-deep bar paten of preceding substrate 610.Each keeps electrode to comprise that bus electrode 620 is to reduce signal delay.Keep electrode pair 615 to cover with dielectric layer 625 fully.Dielectric protection layer 630 is set on the dielectric layer 625.According to embodiments of the invention, dielectric comprises layer 630 and forms by dielectric layer is covered MgO by sputter etc.
Simultaneously, a plurality of addressing electrodes 640 are formed on the surface of the back substrate 635 relative with preceding substrate 610 with the bar pattern.Addressing electrode 640 is formed to intersect with keeping electrode pair 615, and preceding like this substrate 610 and back substrate 635 are toward each other.Addressing electrode 640 covers with dielectric layer 645 fully.A plurality of next doors 650 are set on the dielectric layer 645, and its mode is to be parallel to addressing electrode 640 and towards preceding substrate 610 projectioies.Next door 650 is set between two adjacent addressing electrodes 640.
When current substrate 610 and back substrate 635 are connected to each other, fill discharge gas by the discharge cell 660 that groove and dielectric protection layer 630 are limited.Like this, the infall before the discharge cell 660 of panel assembly 600 is formed between the addressing electrode 640 of the maintenance electrode pair 615 of substrate 610 and rear electrode 635.For example, discharge gas can be Ne-Xe gas, He-Xe gas etc.
The driving of panel assembly 600 is classified as the driving that is used for address discharge and keeps discharge usually.Address discharge takes place between an electrode of addressing electrode 640 and maintenance electrode pair 615.At this moment, produce the wall electric charge.Keep discharge because the electric potential difference that is placed between the maintenance electrode pair of arrangement in the discharge cell 660 that its mesospore electric charge produced takes place.In the process that keeps discharge, the phosphor layer 655 of the discharge cell 660 that its mesospore electric charge is taken place excites by the UV light of launching from discharge gas, and phosphor layer 655 visible emitting.But visible light produces the vision recognition image simultaneously by preceding substrate 610.
Relation between panel assembly 600 and the PDP light filter 200 describes with reference to Fig. 4 B.
With reference to Fig. 4 B, PDP light filter 200 is set on the preceding substrate 610 of panel assembly 600.PDP light filter 200 can separate from the preceding substrate 610 of panel assembly 600, shown in Fig. 4 A.PDP light filter 200 also can contact with the preceding substrate 610 of panel assembly 600.
For fear of counter productive, for example, the light of the regional external environment between entering surface board component 600 and the PDP light filter 200 or in order to strengthen the intensity of PDP light filter 200, PDP light filter 200 can be connected to the preceding substrate 610 of panel assembly 600 by bonding agent or cementing agent 690, shown in Fig. 4 B.
In order to prevent the light receiving surface board component 600 of external environment condition, ambient light screen layer 230 can be arranged in the PDP light filter 200.Mainly the light of the external environment that is absorbed by ambient light screen layer 230 can be prevented from the reflected back external environment.Therefore, being used for the contrast ratio of the PDP of brighter indoor conditions can be modified.
Pitch P2 between the light shield pattern 236 can be less than the pitch P1 between the discharge cell (perhaps pixel) of panel assembly 600; That is, when the unit cell (unit cell) of the corresponding discharge cells 660 of two or more secret notes, can distribute equably and ambient light can absorb effectively from the incident light of panel passage 600.
The periodic pattern of the periodic pattern of discharge cell 660 that Moire fringe (Moire fringe) can be by panel assembly 600 and the light shield pattern 236 of ambient light screen layer 230 forms.Term " Moire fringe " just is used to indicate the interference fringe that is produced when stacked when two or more periodic patterns.In order to prevent such Moire fringe, the pitch P2 of light shield pattern 236 can be among the scope of about 70-about 110 μ m.Herein, the pixel pitch P2 of panel assembly 600 can be in about 0.5 to about 2.5mm the scope of scope.
In the above-described embodiment, when the ambient light screen layer 230 with light shield pattern 236 is illustrated by example, the invention is not restricted to this, and the dissimilar ambient light screen layer shown in Fig. 5 A-5H can be applied to the present invention.Fig. 5 A-5H is the viewgraph of cross-section that has illustrated according to the modified example of ambient light screen layer of the present invention.
As shown in Fig. 5 A-5H, ambient light screen layer 430a, 430b, 430c, 430d and 430e use dissimilar light shield pattern 436a, 436b, 436c, 436d and 436e to absorb ambient light to prevent ambient light entering surface board component and will reflex to observer's side from the ambient light of panel assembly, have improved visible light transmittance thus and have obtained higher contrast ratio.The example of light shield pattern comprises the black matrix-type light shield pattern 436a of the wedge shown in Fig. 5 A, wedge shown in Fig. 5 B is deceived ripple type light shielding pattern 436b, flat secret note type light shielding pattern 436c shown in Fig. 5 C, and the black matrix-type light shield pattern 436d of the flat as shown in Fig. 5 D, the black ripple type light shielding pattern 436e of the flat shown in Fig. 5 E etc.For fear of moore phenomenon, the long side that light shield pattern 436a, 436b, 436c, 436d and 436e can relative matrixs 234 is formed on the drift angle (α) of scopes of about 5-80 degree.
Light shielding layer 430f, 430g shown in Fig. 5 F and 5H and 430h prevent ambient light and focus on the incident light that enters into observer's side from panel assembly effectively, realized higher transmissivity and contrast ratio thus.
Particularly, ambient light screen layer 430f shown in Fig. 5 F comprises the half-cylindrical lenticular lens (lenticular lens) 510 on matrix 234, a plurality of plane that is formed on the panel assembly in the matrix 234, and the focusing incident light, be formed on the flat secret note type light shielding pattern 436c on the another one plane of matrix 234 of shielding ambient light.Ambient light screen layer 430g shown in Fig. 5 G comprises matrix 234, be formed on a plurality of semisphere lenticular lens 512 on the plane of the panel assembly in the matrix 234 and focus on incident light, and be formed on the flat black matrix-type light shield pattern 436d that is used to shield ambient light on the other plane of matrix 234.Ambient light screen layer 430h shown in Fig. 5 H comprises matrix 234, be formed on a plurality of oval pearl lens 514 on the plane of the panel assembly in the matrix 234 and focus on incident light, and at matrix 234 with stop the light shield pattern 524 of clamping between each of a plurality of oval pearl lens 514 of ambient light.
Herein, the light shield pattern 524 shown in Fig. 5 H is by with the identical materials manufacturing of as shown in Figure 2 light shield pattern 236 and carry out identical functions.In addition, light shield pattern 524 has periodic pattern by the pearl lens 514 that are placed on the regular spaces.Lenticular lens 510,512 and pearl lens 514 can be the transparent material manufacturings with higher light transmission (such as 70% or bigger).For example, transparent material can be by glass or transparent resin manufacturing, perhaps neon bulb and/or NIR shielding material.
Therefore, because the caused moore phenomenon of cause of the periodic pattern of the discharge space of the periodic pattern of ambient light screen layer 430f, 430g and 430h, panel assembly 600, the long side that light shield pattern 436c, 436d and 524 can relative matrixs 234 is formed on the drift angle (α) in about 5-80 scopes of spending in order to prevent.
For simplicity, the present invention will describe by the light shield pattern 236 of example with reference to wedge secret note type.
Usually, when two or more periodic patterns are superimposed, may be produced such as the interference fringe of Moire fringe.For this, can prevent that the PDP light filter that the moore phenomenon that may take place takes place from will describe with reference to Fig. 6 in more detail between extraneous light shielding layer and EM radiation shield.Fig. 6 ambient light screen layer that to be explanation separate from as shown in Figure 2 PDP light filter and the decomposition diagram of EM radiation shield.In following explanation, the conductive layer that the wedge secret note is used as the light shield pattern and has a screen patterns is used as the EM radiation shield.
As mentioned above, the pixel pitch of supposing panel assembly is the scope from about 0.5-2.5mm, the pitch of light shield pattern 236 is from about scope of 0.07 to 0.11mm, and the drift angle of light shield pattern 236 be from about 5-80 the degree, do not have moore phenomenon to occur between pixel and the light shield pattern 236.
As shown in Figure 6, produce between conductive mesh type EM radiation shield 220 and ambient light screen layer 230 in order to prevent moore phenomenon, as shown in Figure 6, preferably, ambient light screen layer 230 is in angle (β) upper offset, i.e. drift angle.Herein, drift angle (β) is restricted to the angle of the crossing that is produced between the longer side (that is the longer side of panel assembly) at the imaginary plane and the matrix 234 of screen patterns.Preferably, (β-α) can prevent moore phenomenon in the scopes of 5-40 degree or 50-75 degree the time when the drift angle between EM radiation shield 200 and the ambient light screen layer 230 is poor.In addition, (β-α) can more effectively prevent moore phenomenon in the scopes of 5-15 degree or 55-65 degree the time when the drift angle between EM radiation shield 200 and the ambient light screen layer 230 is poor.
For example, table 2 has been summed up the degree that moore phenomenon depends on the change in the drift angle (β) of ambient light screen layer 230.The pixel pitch of supposing panel assembly is from the scope of 0.5-2.5mm, the screen cloth pitch is from the scope of about 0.25-0.35mm, and the drift angle of light shield pattern 236 (α) is about 5 degree, the optical measurement of Moire fringe is carried out on 5 sample groups, and each has the drift angle (β) in the scope of 0-9 degree, 10-45 degree, 46-54 degree, 55-80 degree and 81-90 degree.
| Sequence number | Drift angle (β) (degree) | Moire fringe |
| 1 | 0—9 | Produce |
| 2 | 10—45 | Do not produce |
| 3 | 46—54 | Produce |
| 4 | 55—80 | Do not produce |
| 5 | 81—90 | Produce |
Confirm that from table 2 change in the drift angle of EM radiation shield 220 (β) is determined the generation of Moire fringe or do not produced; Promptly when the drift angle of EM radiation shield 220 (β) was in the scope of about 10-45 degree or about 55-80 degree, the generation of Moire fringe can be prevented effectively.Because the drift angle (α) of light shield pattern 236 is about 5 degree, (during β-α) in 5-40 degree or 50-75 scopes of spending, can prevent moore phenomenon effectively when the drift angle between EM radiation shield 220 and the ambient light screen layer 230 is poor.
After this, describe with reference to Fig. 7 A-7B according to another embodiment of the invention.Fig. 7 A is the decomposition diagram that shows PDP according to another embodiment of the invention, and Fig. 7 B is the viewgraph of cross-section that shows the PDP that is included in PDP light filter as shown in Figure 7A.For simplicity with convenient explanation, each parts with identical function that are used to describe previous embodiment in all accompanying drawings identify with identical reference number respectively, and the explanation of their repetitions will be omitted.
With reference to Fig. 7 A, 7B, PDP light filter 700 have with according to previous embodiment PDP light filter 200 essentially identical structures, except scattering layer 710 is used to prevent Moire fringe and Newton ring phenomenon.Reflex time on such as the preceding substrate 610 of periodic pattern at panel assembly 600 of the screen patterns of the light shield pattern of the light shield pattern 236 of ambient light screen layer 230 or EM radiation shield 220, Moire fringe may produce by the interference between master pattern and the reflected light pattern.When the distance between the preceding substrate 610 of PDP light filter 700 and panel assembly 600 did not keep equably, the Newton ring phenomenon may take place.The light pattern that scattering layer 710 scatterings are reflected, the interference between the light pattern of master pattern and reflection does not take place like this, prevents Moire fringe and Newton ring phenomenon thus.Diffusion layer 710 can be placed on the surface of PDP light filter 700 of more close panel assembly 600, but the position of scattering layer 710 can change, as long as Moire fringe and Newton ring phenomenon can be prevented from; That is, scattering layer 710 also can be arranged on observer's side of PDP light filter 700, that is, and and on the anti-reflecting layer 250.
After this, PDP according to another embodiment of the invention describes with reference to Fig. 8.Fig. 8 is the decomposition diagram that PDP according to another embodiment of the invention is described.For simplicity and easily explanation, each parts with identical function that are used to describe aforesaid embodiment in all accompanying drawings identify with identical reference number respectively, and the explanation of their repetitions will be omitted.
With reference to Fig. 8, PDP light filter 200 has substantially and the identical structure of PDP light filter 700 shown in Fig. 7 A, 7B, except following part: promptly, in current embodiment of the present invention, in order to prevent Moire fringe and Newton ring phenomenon, the scattering layer 710 that the formed scattering-reflecting surface 611 of anti-glare processing of the preceding substrate 610 by panel assembly 600 is replaced shown in Fig. 7 A, 7B.Scattering-the reflecting surface 611 of the preceding substrate 610 relative with PDP light filter 200 is anti-glare treatment surface and causes the scattering of light reflection, the light that reflected of substrate 610 does not have constant pattern so in the past, prevent interference thus, cause not having Moire fringe or Newton ring phenomenon.The PDP of current embodiment of the present invention also can comprise PDP light filter 700, and described PDP light filter 700 comprises the scattering layer 710 shown in Fig. 7 A, 7B.
After this, PDP according to another embodiment of the invention describes with reference to Fig. 9 A, 9B.Fig. 9 A is the decomposition diagram that PDP according to another embodiment of the invention is described, and Fig. 9 B is the viewgraph of cross-section of being got along the line B-B ' shown in Fig. 9 A.With the convenience that illustrates, each parts with identical function that are used to describe first embodiment shown in Fig. 1-6B in all accompanying drawings identify with identical reference number respectively for simplicity, and the explanation that their repeat will be omitted.
When the above embodiment of the present invention has illustrated the ambient light screen layer, in current embodiment of the present invention, constitute the PDP light filter with the light filter base portion, the ambient light screen layer can be formed directly into or be connected to the preceding substrate of panel assembly, and the light filter base portion is arranged on the ambient light screen layer to finish PDP thus.
With reference to Fig. 9 A, 9B, ambient light screen layer 230 is set directly at or is connected on the preceding substrate 610 of panel assembly 600.Comprise PDP light filter 900 that light filter base portion 270 and color correct layer 240 in the past the ambient light screen layer 230 of substrate 610 separate within a predetermined distance, shown in Fig. 9 A.Alternatively, for fear of counter productive, for example, between the light receiving surface board component 600 and PDP light filter 900 of external environment, perhaps in order to strengthen the intensity of PDP light filter 900, PDP light filter 900 can be connected to the preceding substrate 610 of panel assembly 600 by bonding agent or cementing agent 990, shown in Fig. 9 B.
Aforesaid PDP also can provide and previous embodiment identical functions of the present invention and advantage.
Although embodiments of the invention have carried out independent explanation, also can fall within the scope of the present invention in these combinations of two or more embodiment in the above-mentioned embodiment that describes.
As mentioned above, according to ambient light screen layer of the present invention, comprise the ambient light screen layer display filter, comprise that the display device of described display filter provides following at least advantage: at first, the brightness of display device and contrast ratio can be by showing that forming the light shield pattern on the light filter improve; The second, according to the present invention, such as the infringement image quality of Moire fringe or Newton ring can by relative matrix on predetermined drift angle, settle the ambient light screen layer or have outside the EM radiating layer of light shield pattern or screen patterns prevent.
In the process of summing up described detailed description, under the situation that does not deviate from spirit of the present invention and essence, can make various changes and modifications preferred embodiment.Therefore, disclosed preferred embodiment of the present invention be on general and the descriptive sense and be not purpose in order to limit.
Claims (27)
1. ambient light screen layer that is used to show light filter, described ambient light screen layer comprises:
Substantially transparent resin base portion; And
A plurality of light shield patterns, described a plurality of light shield patterns are formed on the fundamental matrix and with predetermined interval and are separated from each other,
Wherein be formed on drift angle (α) between the long side of the transmission direction of light shield pattern and matrix in the scopes of 5-80 degree, the ambient light screen layer is configured to towards the panel assembly that comprises a plurality of pixels, described panel assembly has the pixel pitch of 0.5-2.5mm, and described light shield pattern has the pitch of 0.07-0.11mm.
2. ambient light screen layer according to claim 1, wherein, the light shield pattern is shaped as wedge secret note, the black matrix of wedge, the black ripple of wedge, flat secret note, flat black matrix or flat black ripple.
3. ambient light screen layer according to claim 1 wherein, also comprises half round post or semisphere lenticular lens, and described lenticular lens focused light also is arranged on the matrix between each light shield pattern.
4. ambient light screen layer according to claim 1 wherein, also comprises the pearl lens on a plurality of planes that are placed in matrix, and wherein the light shield pattern is clamped between each of matrix and a plurality of pearl lens.
5. ambient light screen layer according to claim 1, wherein, the light shield pattern is by black inorganic material and/or organic material, perhaps metal manufacturing.
6. one kind shows light filter, comprising:
The light filter base portion; And
The ambient light screen layer is arranged on the plane of light filter base portion and has the resin matrix of substantially transparent and be formed on lip-deep a plurality of light shield patterns of matrix and be separated from each other with predetermined pitch,
Wherein in the drift angle (α) that forms between the long side of the transmission direction of light shield pattern and matrix in the scopes of 5-80 degree, the ambient light screen layer is configured to towards the panel assembly that comprises a plurality of pixels, described panel assembly has the pixel pitch of 0.5-2.5mm, and described light shield pattern has the pitch of 0.07-0.11mm.
7. demonstration light filter according to claim 6, wherein, the light shield pattern is shaped as wedge secret note, the black matrix of wedge, the black ripple of wedge, flat secret note, flat black matrix or flat black ripple.
8. demonstration light filter according to claim 6 wherein, also comprises half round post or semisphere lenticular lens, and described lenticular lens focused light also is arranged on the matrix between each light shield pattern.
9. demonstration light filter according to claim 6 wherein, also comprises a plurality of pearl lens on the plane that is placed in matrix, and wherein the light shield pattern is clamped between each of matrix and a plurality of pearl lens.
10. demonstration light filter according to claim 6, wherein, the light shield pattern is by black inorganic material and/or organic material, perhaps metal manufacturing.
11. demonstration light filter according to claim 6 wherein, also comprises being positioned at scattering layer on the surface of the demonstration light filter of panel assembly.
12. demonstration light filter according to claim 11, wherein, scattering layer is anti-glare processing film.
13. demonstration light filter according to claim 6, wherein, the wave filter base portion comprises the conduction EM radiation shield that forms screen patterns, and in the drift angle (α) between the long side of the transmission direction of light shield pattern and matrix and poor (scope of β-α) is from 5 to 40 to spend or from 50 to 75 spend to the drift angle between the drift angle (β) between the long side of imaginary plane of extending from screen patterns and matrix.
14. demonstration light filter according to claim 13, wherein, show that light filter is configured to towards the panel assembly that comprises a plurality of discharge cells, described panel assembly has the pixel pitch of 0.5-2.5mm, and screen patterns has the pitch of 0.25-0.35mm.
15. one kind shows light filter, comprising:
Transparent substrates;
The ambient light screen layer, a plurality of light shield patterns that are formed on the transparent substrates and have the transparent resin matrix and be formed on the surface of matrix and be separated from each other with predetermined interval; And
Be formed on conduction EM radiation shield on the transparent substrates with screen patterns,
Wherein poor (scope of β-α) is from 5-40 degree or from 50-75 degree in the drift angle, the drift angle poor (β-α) the drift angle (β) between the long side that is formed on the imaginary plane of extending and matrix from screen patterns and be formed on the transmission direction of light shield pattern and the long side of matrix between drift angle (α) between generation
Show that wherein light filter is configured to towards the panel assembly that comprises a plurality of discharge cells, described panel assembly has the pixel pitch of 0.5-2.5mm, described light shield pattern has the pitch of 0.07-0.11mm, and described screen patterns has the pitch of 0.25-0.35mm.
16. demonstration light filter according to claim 15, wherein, the drift angle (α) that is formed between the long side of the transmission direction of light shield pattern and matrix is from 5 to 80 degree.
17. demonstration light filter according to claim 15, wherein, the light shield pattern is shaped as wedge secret note, the black matrix of wedge, the black ripple of wedge, flat secret note, flat black matrix or flat black ripple.
18. demonstration light filter according to claim 15 wherein, also comprises half round post or semisphere lenticular lens, described lenticular lens focused light also is arranged on the matrix between each light shield pattern.
19. demonstration light filter according to claim 15 wherein, also comprises the pearl lens on a plurality of planes that are placed in matrix, wherein the light shield pattern is clamped between each of matrix and a plurality of pearl lens.
20. demonstration light filter according to claim 15, wherein, the light shield pattern is by black inorganic material and/or organic material, perhaps metal manufacturing.
21. a display device comprises:
Panel assembly, have be provided with respect to one another transparent before substrate and back substrate, and a plurality of unit between preceding substrate and back substrate;
The described ambient light screen layer of claim 1 is connected on the preceding substrate of panel assembly; And
Show light filter, described demonstration light filter is towards extraneous light shielding layer and have antireflection (AR) function of shielding and/or EM radiation shield function, near infrared ray (NIR) ripple function of shielding, perhaps its combination.
22. a display device comprises:
Panel assembly has transparent preceding substrate and back substrate positioned opposite to each other, and is arranged on a plurality of unit between preceding substrate and the back substrate; And
The described demonstration light filter of claim 6 is towards the preceding substrate of panel assembly.
23. display device according to claim 22, wherein, preceding substrate has by the formed scattering-reflecting surface of anti-glare processing.
24. display device according to claim 22, wherein, the preceding substrate of panel assembly and demonstration light filter are connected to each other by bonding agent or cementing agent.
25. a display device comprises:
Panel assembly comprises transparent preceding substrate and back substrate positioned opposite to each other, and is arranged on a plurality of unit between preceding substrate and the back substrate; And
The described demonstration light filter of claim 15 is towards the preceding substrate of panel assembly.
26. display device according to claim 25, wherein, preceding substrate has by the formed scattering-reflecting surface of anti-glare processing.
27. display device according to claim 25, wherein, the preceding substrate of panel assembly and demonstration light filter are connected to each other by bonding agent or cementing agent.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050037658 | 2005-05-04 | ||
| KR20050037658 | 2005-05-04 | ||
| KR1020050081801 | 2005-09-02 | ||
| KR1020050112547 | 2005-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101988013A Division CN101221259B (en) | 2005-05-04 | 2006-01-24 | External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter |
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| Publication Number | Publication Date |
|---|---|
| CN1858624A CN1858624A (en) | 2006-11-08 |
| CN100504455C true CN100504455C (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101988013A Expired - Fee Related CN101221259B (en) | 2005-05-04 | 2006-01-24 | External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter |
| CNB2006100062272A Expired - Fee Related CN100504455C (en) | 2005-05-04 | 2006-01-24 | External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101988013A Expired - Fee Related CN101221259B (en) | 2005-05-04 | 2006-01-24 | External light-shielding layer, filter for display device including the external light-shielding layer and display device including the filter |
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| KR100852515B1 (en) * | 2007-04-06 | 2008-08-18 | 주식회사 엘지화학 | Filter of display device |
| KR101556610B1 (en) * | 2007-12-31 | 2015-10-13 | 삼성디스플레이 주식회사 | Optical sheet and display device having the same |
| US10955597B2 (en) * | 2019-01-04 | 2021-03-23 | Visera Technologies Company Limited | Optical devices |
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| KR100926712B1 (en) * | 2003-05-28 | 2009-11-17 | 엘지전자 주식회사 | Front filter and its manufacturing method |
| KR100522613B1 (en) * | 2003-10-22 | 2005-10-19 | 삼성전자주식회사 | Plasma display panel |
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2006
- 2006-01-24 CN CN2007101988013A patent/CN101221259B/en not_active Expired - Fee Related
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| CN1858624A (en) | 2006-11-08 |
| CN101221259B (en) | 2011-12-07 |
| CN101221259A (en) | 2008-07-16 |
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