MX2007009089A - External light-shielding layer and display apparatus having the same. - Google Patents

Abstract

Disclosed is a display apparatus comprising a panel assembly including a plurality of light-emitting cells divided into a light-emitting region and a non light-emitting region surrounding the light-emitting region, as viewed from a viewer, and a display filter disposed on the panel assembly and including an external light-shielding layer, the external light-shielding layer having light-shielding patterns formed on a side of the external light-shielding layer, wherein an area of the light-emitting region occupies about 60% or more of a total area of the plurality of light-emitting cells, and wherein a bias angle formed by an advancing direction of the light-shielding pattern and a longitudinal side of the panel assembly is about 5 degrees or less. The external light-shielding layer is applied to the display apparatus, thereby effectively preventing the moiré phenomenon from being occurred.

Description

PROTECTIVE COAT AGAINST THE EXTERNAL LIGHT AND VISUALIZATION APPARATUS THAT CONTAINS IT CROSS REFERENCE WITH RELATED REQUESTS This application claims the benefit of the Korean Patent Applications Nos. 10-2006-0078377, filed on August 18, 2006 and 10-2007-0042236, filed on April 30, 2007 with the Korean Intellectual Property Office, whose full disclosure is considered part of the the present, as a reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective layer against external light and to a display apparatus having the protective layer against external light, and more particularly, to a decorative layer and to an apparatus for visualization having the layer protective against external light, which can increase a proportion of contrast in a bright room, and prevent the phenomenon of iridescence. 2. Description of the related technique Since modern society is becoming oriented to more information, the technology of parts and devices related to image visualizations is progressing remarkably, and these parts and devices are becoming widely disseminated. Display devices that use parts and devices related to photoelectronics are becoming significantly widespread and are used for television sets, personal computer monitors, and the like. Also, the display devices are becoming both larger and thinner. Devices with plasma display panel (PDP) are generally gaining popularity as next-generation display devices, to simultaneously satisfy a tendency to become larger, and become thinner, when compared to cathode ray tubes (CRT) that represent the existing visualization devices. The PDP apparatuses display images that utilize a gas discharge phenomenon, and display superior display characteristics such as display resolution, brightness, contrast ratio, a secondary image, an observation angle, and the like. Also, since it is generally observed that PDP devices have the most appropriate characteristics for future high-quality digital televisions, Due to the thin luminous display apparatuses, whose lengthening is simpler than any other display apparatus, the PDP apparatuses are increasing their popularity as display apparatuses and they are replacing the CRT. The PDP apparatus generates a gas discharge between electrodes by a direct current (DC) voltage or an alternating current (AC) voltage, which is supplied to the electrodes. Here, ultraviolet light is generated. Subsequently, phosphorus comes out of the ultraviolet light, emitting light. However, the PDP apparatus has a defect, because the amount of electromagnetic radiation (EM) emitted and radiation close to the infrared (NI) with respect to a drive characteristic, is large, the surface reflectivity of phosphorus is large, and the purity of color due to the orange light emitted from helium (He), or xenon (Xe) used as a sealing gas is less than CRT. Also, the EM radiation and the NI radiation, generated in the PDP apparatus can have harmful effects on human bodies, and cause the sensitive equipment to malfunction such as cordless telephones, remotes, and the like. Therefore, in order to use the PDP device, it is required to prevent the emission of E radiation and NI radiation, emitted from the PDP apparatus from the increase of more than one predetermined level. PDP filters have functions as a function of protection against EM radiation, a function of protection against NI radiation, a surface anti-glare function, improvement of color purity, and the like, are used for protection against EM radiation and protection against NI radiation, while simultaneously reducing reflected light, and improving the purity of the color. The PDP apparatus is made up of a panel unit that includes a space for discharge, where a gas discharge phenomenon occurs, and a PDP filter for protection against EM radiation and protection against NI radiation. Since the PDP filter is equipped in a front unit of the panel assembly, transparency is required to simultaneously emit light and perform protection functions. The external light can enter the panel assembly, passing through the PDP filter in a condition in which an exterior surface is bright, that is, in a bright room condition with the PDP apparatus according to the conventional technique. Consequently, an overlap occurs between the incident light generated in the unloading space of the panel assembly, and the light External input enters through the PDP filter from the external surface. Therefore, a contrast ratio in the bright room condition decreases, and therefore, the display capability of the PDP apparatus deteriorates.

BRIEF SUMMARY An aspect of the present invention provides a protective layer against external light, for a display filter, which can increase a contrast ratio in a bright room, and prevent the iridescence phenomenon. An aspect of the present invention also provides an apparatus for visualization having the protective layer against external light, which can prevent the iridescence phenomenon. According to one aspect of the present invention, there is provided a protective layer against external light, for a display filter comprising a base substrate including a transparent resin, and light-protective patterns, separated from each other on a surface of the base substrate at predetermined intervals, wherein a deflection angle formed with a direction of advance of the light protection pattern and a longitudinal side of the base substrate, is about 5o or less . According to another preferred aspect of the present invention, there is provided a display filter comprising a filter base, a base substrate including a transparent resin, and light-protective patterns, separated from each other on a surface of the base substrate a predetermined intervals, wherein a deflection angle formed by a direction of advance of the light-protective patterns and a longitudinal side of the base substrate is about 5o or less. According to another aspect of the present invention, a display apparatus is provided comprising a panel assembly that includes a plurality of light emitting cells, divided into a light emitting region and a non-light emitting region surrounding the light-emitting region, as observed from an observer, and a display filter placed in the panel assembly and includes a protective layer against external light, the outer light-protective layer, has light-protection patterns, formed on one side of the protective layer against external light, wherein an area of the light emitting region occupies approximately 60% or more of the total area of the plurality of light emitting cells, and wherein a deflection angle formed by a direction of advance of the light protection pattern and one longitudinal side of the panel assembly is approximately 5o or less. However, those skilled in the art can understand that there is a substantial difficulty in the implementation of a display apparatus having an ideal light emission ratio of 100%. Preferably, the angle of deviation is in the range of about 1.5 and about 4 °. The panel assembly includes a front substrate, a rear substrate facing the front substrate, and a plurality of partition walls that divide a plurality of discharge spaces, formed between the front substrate and the back substrate. Also, the panel assembly includes a plurality of electrodes to cause a surface discharge on a side surface of the divider wall. Specifically, the panel assembly comprises a transparent front substrate, a rear substrate positioned to be parallel with the front substrate, a plurality of upper divider walls, positioned between the front substrate and the rear substrate and adapted to divide the discharge spaces, a first discharge electrode and a second discharge electrode, placed in the upper divider wall to surround the unloading spaces, a plurality of lower divider walls placed between the upper divider wall and the posterior substrate, a layer of phosphorus placed in the unloading spaces; and a gas for discharge injected into the discharge spaces. In this case, the upper divider walls and the lower divider walls are formed as a mesh, respectively. Also, any of the front substrate and the back substrate is formed as a black band shape, and the black band functions as a component of the non-light emitting region. That is, the non-light emitting region corresponds to either the dividing wall or the black band shape. The transparent electrode patterns are formed on the front substrate for discharge. Here, the transparent electrode pattern is made of an opaque metal, in order to prevent a delay of the signal from the transparent electrode pattern, and further includes patterns of bus bar electrodes passing through the light emitting region, to be parallel with a surface of the light emitting region as seen from a horizontal plane. In addition, the bar electrode pattern is separated from a surface of the light emitting region by a predetermined distance Hl, the surface is parallel with the bar electrode pattern as seen from a horizontal plane, and the Hl satisfies the following equation: Hl < 0.3 x Ll (where Ll is a length of another surface connected to a surface of the light divider region, parallel to the bar electrode pattern). In addition, the outer light protective layer includes a base substrate including a transparent resin, and light-protective patterns, separated from each other on a base substrate surface at predetermined intervals. Also, the protective pattern against light corresponds to either a black band shape, a wedge-shaped black matrix shape, a wedge-shaped black waveform, a flat black band shape, a form of black matrix in flat form, and a black waveform in flat form. In addition, the display filter is adhered to one side of the panel assembly by means of an adhesion agent. Aspects, features, and / or additional advantages of the invention will be set forth in part in the following description and, in part, will be apparent from the description or can be learned by practice of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS These and / or other aspects, features, and advantages of the invention will become apparent and will be more readily appreciated from the following description of exemplary embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 is an exploded, perspective view schematically illustrating a plasma display panel (PDP) apparatus according to an exemplary embodiment of the present invention; Figure 2 is a cross sectional view illustrating a PDP filter according to an exemplary embodiment of the present invention; Figure 3 is a perspective view illustrating a protective layer against external light, applied to the PDP filter illustrated in Figure 2; Figure 4 is a schematic plan view illustrating a plurality of light emitting cells of a panel assembly according to an exemplary embodiment of the present invention; Figure 5 is an exploded perspective view illustrating a panel assembly of a PDP apparatus according to an exemplary embodiment of the present invention; Figure 6 is a schematic plan view illustrating the plurality of light emitting cells of the panel assembly illustrated in Figure 5; Figure 7 is an exploded perspective view illustrating a panel assembly of a PDP apparatus according to another exemplary embodiment of the present invention; and Figure 8 is a cross sectional view taken along the line I-I 'of Figure 7.

DETAILED DESCRIPTION OF THE MODALITIES Reference will now be made in detail to the exemplary embodiments of the present invention, the examples of which are illustrated in the accompanying drawings, in which similar reference numerals refer to similar elements in all of them. Exemplary embodiments are described below to explain the present invention, with reference to the figures. Figure 1 is an exploded perspective view schematically illustrating a plasma display panel (PDP) apparatus according to an exemplary embodiment of the present invention. In Figure 1 a structure of the PDP apparatus 100 is illustrated according to the exemplary embodiment of the present invention which includes a case (110), a cover (150) covering an upper part of the case (110), a drive circuit board (120) received in the case (110), a panel assembly (130) including a space discharge, where a gas discharge phenomenon occurs, and a PDP filter (140). The PDP filter (140) includes a conductive layer that includes a material with high conductivity on a transparent substrate, and the conductive layer is grounded to the case (110) through the cover (150). Specifically, the electromagnetic radiation (EM) generated from the panel assembly (130) is protected by the cover (150) and the case (110), which are earthed using the conductive layer of the PDP filter (140), before it reaches to an observer. Later, the PDP filter (140) will be described in detail. Figure 2 is a cross sectional view illustrating a PDP filter according to an exemplary embodiment of the present invention. Figure 3 is a perspective view, illustrating a protective layer against external light, applied to the PDP filter illustrated in Figure 2. As shown in Figure 2, the PDP filter (200) according to the present exemplary embodiment includes a base (270) of the filter and a protective layer against the external light, (230). The base (270) of the filter includes a transparent substrate (210), and layers having various protective functions, and the like, and formed on the transparent substrate (210). Here, the base (270) of the filter is formed by stacking the transparent substrate (210), an EM radiation protective layer (220), or an antireflection layer (250) regardless of the order. Hereinafter, layers corresponding to a protective function against EM radiation, and to an antireflection function as separate layers in the present exemplary embodiment are described, but the present invention is not limited thereto. Specifically, the base (270) of the filter according to the present exemplary embodiment may include at least one layer, and each layer may have at least one function between the group consisting of the protective function against EM radiation, and the antireflection function . Also, the base (270) of the filter can collectively have any of the protective function against EM radiation and the anti-reflection function, or have only one function of the protective function against EM radiation, and the anti-reflection function. The outer light protective layer (230) is placed on a surface of the base (270) of the filter. The protective layer against external light (230) is placed on a front surface towards the panel assembly of the base (270) of the filter, i.e., a surface opposite to an observer position when the PDP filter (200) is installed in the PDP apparatus, but the present invention is not is limited to this, and the outer light protective layer (230) may be placed on another surface of the base (270) of the filter. The outer light protective layer (230) includes a support (232), a base substrate (234) formed on a support surface (232), and a light-protective pattern (236) formed on the base substrate (234). ). The light-protective pattern (236) shields the external light panel assembly (320) from an external surface of the PDP filter. The light-protective pattern (236) in the present exemplary embodiment may include a plurality of black wedge-shaped bands, positioned in such a manner as to be separated from each other at predetermined intervals. In the present exemplary embodiment, a bottom surface of the wedge-shaped black band is positioned on the base substrates in such a manner to face the panel assembly. Here, the base substrate (234) in which the light-protective pattern (236) is formed may be formed directly in the base (270) of the filter, but the base substrate (234) may be combined with the base (270) of the filter after forming the base substrate (234) in the support (232), as illustrated in Figure 2. The support (232) supports the base substrate (234) where the light-protective pattern is formed (236) . The base substrate (234) and the base surface (270) of the filter are combined through the support (232) in the exemplary embodiment illustrated in Figure 2, but the present invention is not limited thereto. Specifically, since the support (232) is intended to support the base substrate (234), the base substrate (234) and the base (270) of the filter can be combined directly when the outer light protective layer (230) it is placed on another surface of the base (270) of the filter. In the exemplary embodiment of the present invention, the support (232) is preferably a transparent resin film, which is transparent to ultraviolet light. A polyethylene terephthalate (PET), a polycarbonate (PC), a polyvinyl chloride (PVC), and the like, can be used as support materials (232). Also, a layer having a characteristic function of a filter such as antireflection layer (250), color correction layer (240), EM radiation protection layer (220), and the like can be used for support (232). The protective pattern against light (236) includes the plurality of wedge-shaped black strips, each having a wedge shape and its cross-section and placed on the surface of the base substrate (234), facing the panel assembly (not shown) in such a way as to be separated from each other at predetermined intervals. Also, the light-shielding pattern (236) prevents the external light (320) from entering the interior of the panel assembly. The base substrate (234) is made of a UV-curable photocurable resin, and the light-protective pattern (236) can be made of inorganic / organic black materials, capable of absorbing light, and a metal. In particular, since the electrical conductivity is large, that is, the electrical resistance is low in the case of using the metal, the electrical resistance according to the concentration of the metallic powder can be controlled when the protective pattern against light is formed (236) by the addition of metallic powder. Accordingly, the light-protective pattern (236) can perform the protective function against EM radiation.

Furthermore, in the case of using a surface blackened metal or a black metal, the light-protective pattern (236) can efficiently perform the function of protection against external light and the function of protection against EM radiation. Also, the resin Ultraviolet photocurable that includes carbon can be used for the light-protective pattern (236). The light-protective pattern (236) of the present invention can be formed by a roll molding method, a hot press method using a thermoplastic resin, an injection molding method in which a thermosetting or thermoplastic resin it is filled into the base substrate (234), wherein a shape opposite to the light-protective pattern (236) is fully reflected, and the like. Also, when the UV-curable ultraviolet resin forming the base substrate (234) has the anti-reflection function, the protective function against EM radiation, a color calibration function, or any combination of these, the outer light protective layer ( 230) can additionally perform the above functions. The light-protective pattern (236) which constitutes the outer light protective layer (230) absorbs the external light (320), prevents the external light (320) from entering the panel assembly, and totally reflects the incident light ( 310) from the panel assembly to the observer. Accordingly, a large transmittance can be obtained with respect to visible light, and a large proportion of contrast. The PDP device preferably has great transmittance with respect to visible light, and large proportion of contrast. Here, the contrast ratio can be shown as Equation 1.

Brilliance of (white light + reflected light) contrast opration = 1 Brilliance of (black light + reflected light) Equation 1 When the light emitted from the panel assembly is allowed to pass through the PDP filter without filtration, to increase the transmittance of the PDP apparatus, both the brightness of the white light and the brightness of the black light are increased. Therefore, when the brightness of the PDP apparatus is increased, the proportion of total contrast is relatively decreased. A conventional PDP apparatus adopts a method of using a PDP filter that includes a color correction film containing black colorant, and increases the contrast ratio instead of reducing the transmittance of the PDP filter to a certain degree. The contrast ratio of approximately 120: 1 can be obtained in the case of using the conventional PDP apparatus. The PDP filter (200) of the present invention uses the light-protective pattern (236) that absorbs the light instead of using the correction film of color that contains black dye. Here, the light-shielding pattern (236) partially absorbs the incident light (310), emitted from the panel assembly, and reduces the brightness of white light and black light by a predetermined portion, thereby increasing the contrast ratio. Also, according to Equation 1, the contrast ratio corresponds to a function with respect to the brightness of the reflected light, and the reflected light includes the reflected light after the external light (320) enters the panel assembly. Here, since the external light (320) is absorbed directly in the light-protective pattern (236), or is indirectly absorbed in the light-protective pattern (236), although reflection occurs in the panel assembly, the brightness of reflected light can be reduced. Therefore, although identical reflected light is generated with respect to white light and black light, the brightness of light reflected in a denominator of Equation 1 is reduced. Therefore, the contrast ratio can be increased. When a ratio of the area of the background surface of the light-protective pattern (236) to the surface of the base substrate (234) corresponds to about 20% to about 50%, the maximum contrast ratio can be obtained by the loss of minimum transraitancy. More preferably, greater effects can be obtained, when the ratio of the area of the background surface of the light-protective pattern (236) to the base substrate surface (234), corresponds to about 25% to about 35%. The PDP apparatus using the PDP filter (200) includes the outer light protective layer (230), can obtain a contrast ratio greater than or equal to approximately 250: 1, when the visible light transmittance is maintained or is greater or equal to approximately 40%. Also, the outer light protective layer (230) has the highest transmittance that is equal to or about 60% in a visible spectrum. The incident light (310) coming from the panel assembly is more incident to a vertical direction with respect to the outer light protective layer (230). Also, a portion of the incident light (310) is absorbed in the light-protective pattern (236). However, the largest portion of the incident light (310) is transmitted directly through the substrate (234), and therefore this causes the transmittance of the PDP apparatus to increase. Again with reference to Figure 2, the base (270) of the filter has a multi-layer structure of the EM radiation protective layer (220), formed on the surface of the transparent substrate (210), and the antireflection layer (250) formed on the other surface of the transparent substrate (210), and the like. The present invention is not limited to the order of stacking described above, and the base (270) of the filter can have the multilayer structure, regardless of the stacking order of the transparent substrate (210), the protective layer against EM radiation ( 220), or the anti-reflective layer before (250). Here, the transparent substrate 210 is generally produced using a transparent plastic material such as glass or acrylic. Also, the transparent substrate (210) can be excluded, depending on a type of the base (270) of the filter. In the present exemplary embodiment, the transparent substrate (210) may include an inorganic compound such as glass, quartz, and the like, and transparent organic polymers. Acrylic or polycarbonate are generally used for the transparent substrate 210, formed by the organic polymer member, however, the present invention is not limited to the exemplary interior embodiments. The transparent substrate 210 preferably has high transparency and thermal resistance.

Also, the transparent substrate 210 may include a polymeric article or stacked body of the polymeric articles. A transmittance with respect to the visible light is preferably greater than about 80% with respect to the transparency of the transparent substrate (210), and the transition temperature with respect to the glass is preferably greater than about 50 ° C with respect to the thermal resistance. It is required that the polymer used for the transparent substrate (210) be transparent in a visible wavelength range. Also, there are polyethylene terephthalate (PET), polysulfone (PS), polyether sulfone (PES), polystyrene, polyethylene naphthalate, polyarylate, polyether ether ketone (PEEK), polycarbonate (PC), polypropylene (PP), polyimide, triacetylcellulose (TAC), polymethyl methacrylate (PMMA), and the like, as a specific example of the polymer used for the transparent substrate (210), however, the polymer used for the transparent substrate (210) is not limited thereto . The transparent substrate 210 preferably includes PET in terms of price, heat resistance, and transparency. Also, it is required to cover a viewing surface with a very conductive material to protect from EM radiation. A transparent multilayer conductive film that stacks to a reticle film conductive, a thin metallic film, and a thin transparent film, having a high refractive index, can be used for the protective layer against EM radiation (220) according to the present exemplary embodiment. In the present exemplary embodiment, the EM radiation protective layer (220) is formed on the transparent substrate surface (210), i.e., a surface facing the panel assembly, but the present invention is not limited to the previous provision. Here, a grounded metal grating, a synthetic resin or a lattice of a metallic fiber covered with a metal, can generally be used for the conductive network film. A metal having processing capacity and high electrical conductivity, for example, copper, chromium, nickel, silver, molybdenum, tungsten, aluminum, and the like, can be used for the metal that forms the conductive network film. Also, the transparent thin film having a high refractive index such as indium tin oxide (ITO) can be used for the transparent multilayer conductive film, in order to have the protective effect against EM radiation. There is a thin multilayer film that alternately stacks the thin metallic film like gold, silver, copper, platinum, and palladium, and the transparent thin film having the high refractive index such as indium oxide, stannic oxide, zinc oxide, and the like, such as the transparent multilayer conductive film. The thin metal film is a thin film layer, formed with silver, or an alloy that includes silver. Since silver and the alloy that includes silver has great conductivity, great reflectivity with respect to infrared light, and great transmittance with respect to visible light when multiple layers are stacked, silver is preferably used. However, since silver has low chemical and physical stability, and is deteriorated by contaminants from the surrounding environment, steam, heat, light, and the like, the alloy that includes silver and at least one other metal that is stable with Regarding the surrounding environment such as gold, platinum, palladium, copper, indium, tin, and the like, it can also be used. Also, the transparent thin film having a high refractive index, has transparency with respect to visible light, and has an effect of preventing visible light from being reflected by the thin metal film, due to a difference in the refractive index of the thin metallic film. materials specific particles forming the thin transparent film having the high refractive index are an oxide such as indium, titanium, zirconium, bismuth, tin, zinc, antimony, tantalum, cerium, neodymium, lanthanum, thorium, magnesium, potassium, and the like , combinations thereof, zinc sulphide, and the like. Although not illustrated either, the base (270) of the filter according to the present exemplary embodiment may separately include a protective layer against the radiation NI. The NI radiation protective layer is generated from the panel assembly, and safeguards the strong NI radiation that causes electronic devices such as cordless telephones, remotes, and the like, to malfunction. There is an effect that the multilayer transparent conductive film shields the NI radiation, when the multilayer transparent conductive film stacks the thin metal film and the transparent thin film having the high refractive index, is used for the protective layer against EM radiation (220) according to the present exemplary embodiment. Therefore, two functions corresponding to a function of protection against radiation NI and the function of protection against EM radiation, can be performed simply by the protective layer against the EM radiation (220) without separately forming the radiation layer NI. Also, the radiation protective layer NI described as follows, can be formed separately in this case. When the conductive network film is used for the EM radiation protective layer (220) in the present exemplary embodiment, a polymeric resin, which includes a dye that absorbs the NI radiation, which absorbs a wavelength of a range of NI radiation, is used to protect the NI radiation emitted from the panel assembly. For example, an organic dye of various materials such as cyanine, anthraquinone, naphthaquinone, phthalocyanine, naphthalocyanine, dimonium, niqueldithiol, and the like, can be used for the dye that absorbs NI radiation. Since the PDP apparatus emits strong NI radiation that extends over a wide wavelength range, the NI radiation shield can be used, which absorbs NI radiation that extends over the wide wavelength range. When the transparent conductive film is used for the EM radiation protective layer (220) according to the present exemplary embodiment of the invention, the protective function against EM radiation is relatively deteriorated, compared to the case where uses the conductive network film for the protective layer against EM radiation (220)however, when the protective function against EM radiation is supplemented or reinforced by the addition of the metallic powder to the light-protective pattern (236), the protection function against EM radiation is sufficiently carried out only with the transparent conductive film . The antireflection layer (250) according to the present exemplary embodiment is formed on the other surface of the transparent substrate (210), but the present invention is not limited to the sequence set forth above. As illustrated in Figure 2, it is efficient for the antireflection layer (250) to be formed on a surface corresponding to an observer position, when the PDP filter (200) is installed in the PDP apparatus, that is, the opposite surface of the panel assembly. The antireflective layer (250) can improve visibility by reducing the reflection of an external light. Also, the reflection of the external light from the PDP filter (200) can be further reduced by forming the antireflection layer (250) on a surface, in the direction of the panel assembly from the main surfaces of the PDP filter (200). . Also, the transmittance with respect to the visible light coming from the Panel mounting and a contrast ratio can be increased by forming the antireflection layer (250) and reducing the external light reflection of the PDP filter (200). The PDP filter (200) according to the present exemplary embodiment may also include the color correction layer (240). The color correction layer (240) modifies or corrects the color balance by reducing or controlling an amount of a red (R), a green (G), and a blue (B) color. Since the inherently emitted light of the plasma and the light emitted by the external light, are reflected from the panel assembly, again the color is orange, the color-orange is emitted significantly from the panel assembly. The PDP filter (200) according to the present exemplary embodiment can substantially reduce an amount of the incident orange light (310) by using the outer light protective layer (230), and prevent the external light (320) from entering panel assembly. Accordingly, the PDP filter (200) of the exemplary embodiment can increase the purity of the color, without further reducing an amount of the colorant used to correct the orange color, or by using the colorant. For example, when the colors red, green, and blue (RGB) are set in the middle image gradation (50 IRE) in a bright room (150 lux (lx)), the color coordinates are searched with a measuring instrument with respect to each color, and an area ratio of the measured color coordinates is searched, compared with an area relative to the color coordinates of characteristic colors, It is evident that great purity of color can be obtained. The high purity of color can be obtained due to an area ratio of approximately 86%, when measured through the PDP filter (200), compared to the fact that an area ratio of approximately 66% is obtained, when Measure directly on the panel assembly. The color correction layer (240) uses various dyes, in order to increase a range of color reproduction of a display, and improve the distinction of a screen. Dyes or pigments can be used for the colorant. The types of dyes are organic dyes that have a protective function against neon light such as anthraquinone, cyanine, azo, stilbene, phthalocyanine, methane, and the like, and the present invention is not limited thereto. Since the types and concentrations of the dyes are determined by the absorption wavelength, absorption coefficients, and transmittance characteristics required for the displays, various numerical values can be used without limiting them to a specific value.

When each layer of each film of the PDP filter (200) adheres together, a transparent sizing agent or adhesive can be used. As a specific material, there is an acrylic adhesive, a silicone adhesive, a urethane adhesive, a polyvinyl butyral adhesive (PMB), an ethylene vinyl acetate (EVA) adhesive, a polyvinyl ether, a saturated amorphous polyester, a melamine resin, and the like. A shimmering strip can be generated by the periodic pattern of the light-protective pattern (236) of the outer light protective layer (230) and the periodic pattern shown in the panel assembly (structure of the light-emitting cell, pattern electrode, and similar). The iridescent stripe refers to a strip of interference created when at least two periodic patterns overlap. As illustrated in Figure 3, a line extending from the light-shielding pattern and a longitudinal side of the base substrate (234), are alternately positioned in such a manner to have a predetermined angle (a) between the extended line and the side longitudinal, to prevent the iridescent strip created by a phenomenon of interference between the discharge spaces and the protective layer against external light. Here, in order to effectively prevent the iridescent stripe, a deflection angle (a) defined as a An intersection angle formed by the extended line from the light-shielding pattern (236) and the longitudinal side of the base substrate (234), can be changed in their effective values according to the structure of the panel assembly. In order to prevent the iridescence phenomenon of the panel assembly of the present invention, which will be described later, the angle of deviation (a) should be 5 ° or less, and preferably be in the range between 1.5 and 4. °. The angle of deflection (a) can be understood as an angle of intersection of the light-shielding pattern (236) with respect to the longitudinal side (horizontal direction with respect to an observer) of the panel assembly. As described above, when the light-protective pattern (236) has a predetermined angle of 5 ° with respect to the longitudinal side of the panel assembly, the light-protective pattern (236) is scarcely affected by various patterns of the panel assembly and a step of the protective pattern against light and the like, thereby effectively preventing the iridescence phenomenon of the PDP apparatus. Next, the panel assembly according to the present invention will be described in detail. Particularly, the panel assemblies described below are characterized by being prevented effectively the iridescence phenomenon, generated by the angle of deviation. The panel assembly according to the present exemplary embodiment includes a plurality of light emitting cells. The light emitting cell is a region formed between the front and rear substrates of the panel assembly. The light emitting cell is divided into a light emitting region and a non-light emitting region surrounding the light emitting region, as observed from an observer. The light emitting region is different from a concept of a discharge space, that is, a cell in which a discharge gas is discharged. Specifically, the discharge space varies, depending on the mesh shapes, however, the light emitting cell denotes a pixel corresponding to an optical unit. Different from this, the discharge space varies from the types of dividing walls of the panel assembly, for example, a dividing wall into a band pattern, a dividing wall into a mesh pattern, and the like. Figure 4 is a schematic plan view illustrating a plurality of light emitting cells of a panel assembly according to an exemplary embodiment of the present invention. In this case, the emitting cell has a flat area as observed from an observer. With reference to figure 4, the sending cells of light (40) are divided into a light emitting region (42) and a non-light emitting region (44). The light emitting cells (40) are successively formed in such a way as to be adjacent to each other. The light emitting cells illustrated in Figure 4 can not all be formed in the same plane. That is, Figure 4 illustrates the light emitting cells (40) observed by an observer. The light emitting regions (42) may correspond to any of a red light emitting region, a green light emitting region, and a blue light emitting region, respectively, and serve as color pixels, capable of making various colors to the allow the light-emitting regions to be expressed by three different colors, to constitute a group. The non-light emitting region (44) may be a region corresponding to a portion of the dividing walls, in the case of the panel assembly having mesh-like partition walls. Also, in the case of the panel assembly having partition walls in band pattern, the non-light emitting region (44) can be any region corresponding to a portion of the partition wall or a region corresponding to a portion of the black band formed on the front substrate. Specifically, the non-light emitting region (44) corresponds to portions that are observed as a color black, observed by an observer. For example, in the case of the panel assembly having the dividing wall in band pattern as illustrated in Figure 4, a non-light emitting region (44a) formed in a longitudinal direction, may be a dividing wall, and a The non-light emitting region (44a) formed in a horizontal direction may be the light-protective pattern (black band) formed on the front substrate. In the case of the panel assembly according to the present exemplary embodiment, an area of the light emitting region (42) occupies 60% or more of the total area of the light emitting cells. An area ratio of the light emitting region (42) to the total area of the light emitting cells (40), can theoretically include the case of having an effective light emitting area of 100%. Specifically, as the proportion of the relative area increases, the portions to be observed as the black color are reduced, and conversely, as the proportion of the relative area is reduced, the effective area emitting light is reduced. The PDP apparatus including the panel assembly with 60% or more of the relative area ratio, described above and the outer light protective layer having 5o or less of the deflection angle (a) described above, shows a ratio of superior contrast in a bright room and prevents the iridescence phenomenon from occurring. Specifically, when the ratio of relative area is 60% or less, the iridescence phenomenon can occur even if the outer light protective layer has the deflection angle (a) of 5o or less. Also, when the angle of deviation (a) is 5o or more, although the proportion of relative area is 60% or more, the iridescence phenomenon may occur. The present exemplary embodiment focuses on the PDP apparatus, however, the outer light protective layer of the present invention can be applied to typical display apparatuses, wherein the light emitting region occupies 60% or more of the total area of the light emitting cells. That is, those skilled in the art can easily apply the outer light protective layer according to the present invention to the panel assembly, in order to prevent the occurrence of the iridescence phenomenon in a liquid crystal display apparatus (LCD ) and similar. Figure 5 is an exploded perspective view illustrating a panel assembly of a PDP apparatus according to an exemplary embodiment of the present invention. The panel assembly (500) of the PDP apparatus of according to an exemplary embodiment of the present invention is a surface discharge PDP, of three electrodes driven by AC. The panel assembly (500) of the PDP apparatus comprises a front substrate (520) and a back substrate (530). The rear substrate (530) includes a plurality of address electrodes (533) for generating address discharge, a posterior dielectric layer (535) for engaging the address electrodes (533) within the posterior substrate, a plurality of partition walls (537). ) for dividing a plurality of discharge spaces, and a phosphor layer (539) covered on both sides of the partition wall and on the rear substrate, where each partition wall is not formed. In accordance with the present exemplary embodiment, the partition walls (537) have a band pattern. The front substrate (520) is positioned facing the rear substrate (530) in such a way as to be separated from the rear substrate (530) by a predetermined distance. The front substrate (520) includes a plurality of common and scanning electrodes (522 and 523) to generate a constant discharge, a front dielectric layer (525) to fit the common and scanning electrodes (522 and 523) into the front substrate , and a support layer (529).

Each common electrode (522) includes a common transparent electrode (522a) and a common bus bar electrode (522b), placed on one side of the transparent common electrode (522a). Also, each scanning electrode (523) includes a transparent scanning electrode (523a) and a bus scanning electrode (523b) positioned on one side of the transparent scanning electrode (523a). In accordance with the present exemplary embodiment, the divider walls' (537) extend in a longitudinal direction of the panel assembly (500) as observed from an observer, and the common and scanning electrodes (522 and 523) are formed in pattern to extend in a direction that crosses the dividing walls (537) orthogonally. Therefore, the outer light protective layer as described above, is placed on an existing surface of the panel assembly (500), so that the angle of deflection (a) of the protective pattern against the light of the protective layer against external light is 5 ° or less with respect to an extended direction of the common and scanning electrodes, i.e. the horizontal direction of the panel assembly (500). Figure 6 is a schematic plan view illustrating the plurality of light emitting cells of the panel assembly illustrated in Figure 5. Specifically, Figure 6 is a plan view of the panel assembly as observed from an observer. As illustrated in Figure 6, the panel assembly includes the plurality of light emitting cells (60), which are divided into a light emitting region (62) and a non-light emitting region (64). Also, as illustrated in Figure 6, the common bus bar electrodes 522b and bus bar scanning electrodes 523b of the front substrate 520 are observed as a black color. Since the bus bar electrodes (522b and 523b) are made of an opaque metal that can not transmit light, they are observed as a black color, as observed by the observer. As described above, an area of the light emitting region (62) of the panel assembly (500) of the PDP apparatus according to the present exemplary embodiment, occupies 60% or more with respect to the total area of the emitter cells of light (60), so that the protection against external light having the predetermined deflection angle (a) (5o or less) described above, is effectively applied to the panel assembly, thereby effectively preventing the occurrence of the phenomenon of shimmering. Also, although there are differences in an effective aspect of the protective layer against external light, the protective layer against external light having the angle of deviation of 5o or less, is applied to others. display apparatuses having 60% or less of the relative area ratio of the light emitting region (62), thereby preventing the iridescence phenomenon from occurring at a predetermined level or more. However, it is prevented that the iridescence phenomenon occurs more effectively, only when the outer light protective layer is applied to the display apparatus having at least 60% or more of the relative area ratio of the light emitting region. (62) as described above. In addition, the bus bar electrodes (522b and 523b) are positioned adjacent a surface (62a) of an adjacent light emitting region that is parallel to the bus bar electrodes (522b and 523b). Specifically, a separation distance Hl between the bus bar electrodes (522b and 523b) and the surface of the adjacent light emitting region (non-light emitting region (62a)) is set to be 30% or less of a length Ll of a surface (62b) of the light emitting region, orthogonally crossing the extended direction of the bus bar electrodes (522b and 523b). More particularly, in the case of the panel assembly that satisfies the following Equation 2, as for the positions of the bus bar electrodes, the protective layer against external light according to the modality exemplary, it is applied to the panel assembly, thereby preventing the phenomenon of iridescence from occurring. Hl < 0.3 x Ll Equation 2 That is, Hl is a distance between the bus bar electrodes and the non-light emitting region (a surface of the light emitting region) is parallel with the bus bar electrodes, and Ll is a length of the surface of the light-emitting region, which crosses orthogonally the non-light-emitting region. According to the panel assembly of the PDP apparatus having the bus bar electrodes (522b and 523b), which satisfy the above Equation 2, the outer light protective layer includes the light-protective pattern having the predetermined angle described previously, it is applied to the panel assembly, thereby preventing the iridescence phenomenon from occurring. Figure 7 is an exploded perspective view illustrating a panel assembly of a PDP apparatus according to another exemplary embodiment of the present invention. Figure 8 is a cross sectional view taken along the line I-I 'of Figure 7. As illustrated in Figure 7, another panel assembly (700) of a PDP apparatus is provided, wherein generates a superficial discharge on a lateral surface of the dividing wall. A protective layer against external light that includes a light-protective pattern having a predetermined deflection angle (5 ° or less) according to the present invention, it is applied to the panel assembly (700) of the PDP apparatus according to the present exemplary embodiment, thereby more effectively preventing the iridescence phenomenon from occurring. With reference to Figures 7 and 8, the panel assembly (700) of the PDP apparatus according to the present exemplary embodiment, comprises a front substrate (720) and a back substrate (730). The front substrate (720) is separated from the back substrate (730) in such a way as to be parallel with the other. The front substrate (720) includes a plurality of upper divider walls (727), placed in non-discharge portions and adapted for the division of the discharge spaces. Each upper divider wall (727) includes an upper discharge electrode (722) and a lower discharge electrode (723) formed in the upper divider wall (727), such that they surround the light divider region. In this case, the upper discharge electrode (722) denotes an electrode placed above the lower discharge electrode (723). In accordance with the present exemplary embodiment, since the partition wall (727) is formed as mesh, the discharge space is considered as a concept corresponding to the light emitting region. A plurality of lower partition walls (737) formed between the upper divider walls (727) and the rear substrate (730), function to prevent cross-linking between the charged particles. A plurality of phosphor layers (739) is placed in the cells defined by the lower partition walls (737). A discharge gas is filled in the respective discharge spaces. Here, either the upper discharge electrode (722) or the lower discharge electrode (723) serves as a directional electrode, and the remaining discharge electrode serves as a discharge electrode to generate the discharge. Different from this, as illustrated in Figures 2 and 3, the upper discharge electrode (722) and the lower discharge electrode (723) are extended in one direction in such a way as to be parallel to each other, respectively. Also, a plurality of steering electrodes (733) are further provided, which extend in such a manner to be orthogonally crossing the upper discharge electrode (722) and the lower discharge electrode (723). In this case, preferably, the lateral surface of the upper divider wall (727) is covered by a film (729) of MgO, the steering electrode (733) is positioned between the rear substrate (130) and the phosphor layer (739), and a dielectric layer (735) is placed between the steering electrode (733) and the phosphor layer (739) . Next, a specific example for a configuration of the panel assembly of the PDP apparatus will be described in detail, as described above. The panel assembly of the PDP apparatus comprises a rear substrate (730), a plurality of address electrodes (733), a dielectric layer (735) to cover the address electrodes, a plurality of lower partition walls (737) formed in the dielectric layer for dividing the discharge spaces C, a plurality of lower discharge electrodes (723) surrounding an upper portion of the dielectric layer; and which extend to intersect with the steering electrode, a plurality of upper divider walls (727) for surrounding the upper discharge electrode and the lower discharge electrode, a plurality of phosphor layers (739) placed on the lateral surfaces of the lower partition walls and in the dielectric layer, where each lower partition wall is not formed, a discharge gas that fills the respective light emitting cells, and a front substrate (720) placed on the upper partition walls, to be parallel with the posterior substrate.

The rear substrate (730) supports the steering electrodes (733), the dielectric layer (735), and the like, and typically includes a material having glass as its main component. The steering electrode (733) generates a steering discharge, to facilitate a constant discharge between the lower discharge electrode (723) and the upper discharge electrode (722), and more particularly, it works to decrease a voltage when the start is initiated. constant discharge. When the steering electrode (733) is formed on the rear substrate (730), the upper discharge electrode may correspond to a scanning electrode and the lower discharge electrode may correspond to a common electrode. However, preferably, the upper discharge electrode (722) is the common electrode, and the lower discharge electrode (723) is the scanning electrode. This is because it is desirable that, in order to facilitate an unloading of direction between the scanning electrode and the steering electrode (733), the scanning electrode is positioned below the common electrode. Accordingly, hereafter, the upper and lower discharge electrodes (722 and 723) are referred to as the common electrode and the scanning electrode, respectively, for convenience of explanation.

In accordance with the present exemplary embodiment, the scanning electrode (723) and the common electrode (722) are positioned in such a manner to surround the upper portion of the discharge spaces C. The upper portion of the discharge space denotes a portion superior to the lower dividing wall (737). The scanning and common electrodes (723 and 722) are placed to cross each other. However, when the steering electrode (733) is formed in the rear substrate, the scanning and common electrodes (723 and 722) are preferably positioned to be parallel to each other. Also, as illustrated in Figure 2, the scanning and common electrodes (723 and 722) are formed as an electrode, respectively, however, differently, they may include at least two external electrodes, respectively. The direction discharge denotes a discharge that occurs between the scanning electrode (723) and the address electrode (733). When the directional discharge is completed, positive ions accumulate in the scanning electrode (723), and the electrons accumulate in the common electrode (722), thereby facilitating constant discharge between the scanning electrode and the common electrode . The dielectric layer (735) includes a substance dielectric, such as PbO, B203, Si02, etc., which can prevent the steering electrodes (733) from being damaged due to the collision of positive ions or electrons with the steering electrodes (733), and can induce electrical charges during the discharge. The lower divider wall (737) prevents an erroneous discharge occurring between the discharge spaces C corresponding to a subpixel between subpixels that emit red light, subpixels that emit green light, and subpixels that emit blue light, constituting unit pixels. The lower divider walls (737) are illustrated to divide the discharge spaces C into a matrix pattern in Figure 2, however, they are not limited thereto, and can divide the discharge spaces C in a different pattern as a pattern in the form of a comb. Also, the discharge spaces C defined by the lower divider wall (737) have a rectangle in their cross section, however, they are not limited thereto, and may have a polygon such as a triangle and a pentagon, or a circle, oval and similar in its cross section. The scanning electrode (723) and the common electrode (722) denote electrodes for constant discharge. The constant discharge for PDP imaging is generated between the scanning electrode (723) and the common electrode (722). Here, the scanning electrode (723) and the common electrode (722) are made of a conductive metallic material such as copper, aluminum and the like. The scanning electrodes (723) extend transversely with the directional electrodes, because the columns of the discharge spaces C passing the directional electrodes intersect with the columns of the discharge spaces C passing the scanning electrodes. Also, the common electrodes (722) extend in parallel with the scanning electrodes (723), because the common electrodes are positioned separately from the scanning electrodes by a predetermined distance. The upper divider walls (727) divide the adjacent discharge spaces C and are formed of the dielectric material,. so that the scanning electrodes (723) and the common electrodes (722) are prevented from driving directly during constant discharge. Also, the upper divider walls (727) prevent damage to the electrodes (722 and 723) when the charged particles have directly hit the electrodes, and induce charged particles toward the wall. According to the panel assembly of the PDP apparatus according to the present exemplary embodiment of the invention, both the scanning electrodes and the common electrodes are embedded in the dividing walls superiors As a result, an effective light emitting area is substantially increased, in comparison to the panel assembly of the PDP apparatus of Figure 5. Also, the panel assembly of the PDP apparatus according to the present exemplary embodiment adapts the protective layer against external light according to the present exemplary embodiment, thereby effectively prevents the iridescence phenomenon. Later, in order to verify that the iridescence phenomenon occurs according to the proportion of the area of the light-emitting region to the area of the light-emitting cell (effective light-emitting area), the observed results will be described by the use of a PDP apparatus that includes two types of panel, each one has an effective light emitting area, different from each other.

Test 1 The occurrence of the iridescence phenomenon in two respective 106.6 cm (42 inch) PDP apparatuses each having different panel types (module type A and module type B), was verified as shown in table 1 below. : Table 1 As can be seen in table 1, the panel of the type A module had the proportion of the effective light emitting area of approximately 59%, and the panel of the type B module had the proportion of the effective light emitting area of approximately 75%. In the above PDP apparatuses, respectively, which adapt the deflection angle (5o or less) of the protective layer against external light according to the present invention, the occurrence of the iridescence phenomenon was observed, and it was discovered that the panel of the module type A showed the phenomenon of iridescence under the angle of deviation of 5o or less, although there is a small difference according to the angle of deviation. The type B module panel also did not show the iridescence phenomenon. Furthermore, it was expected that the results of the simulation performed by the PDP apparatus of 106.6 cm (42 inches) were such that when the proportion of the Effective light emitting area was at least 60% or more, the iridescence phenomenon will not be shown.

Test 2 The occurrence of the iridescence phenomenon in PDC appliances of 127 cm (50 inches) each having different panel types (module type A and module type B) was verified as shown in table 2 below.

Table 2 As can be seen from table 2, the panel of the type A module had the proportion of the effective light emitting area of approximately 59%, and the panel of the type B module had the proportion of the effective light emitting area of approximately 75 %, in the same way as the 101.6 cm (40 inch) PDP device. In the previous respective PDP apparatuses that adapt the deviation angle (5o or less) of the layer protective against external light according to the present invention, the occurrence of the phenomenon of iridescence was observed, and it was discovered that the module panel type A showed the iridescence phenomenon under the deviation angle of 5o or less, although there is a small difference according to the angle of deviation. The type B module panel also did not show the iridescence phenomenon. In addition, it was expected that the results of the simulation performed by the PDP apparatus of 127 cm (50 inches) were such that when the proportion of the effective light emitting area was at least 60% or more, the phenomenon would not be shown of iridescence. Later on, 1 as to the PDP device having the panel assembly of figure 5, the results obtained by verifying the occurrence of the iridescence phenomenon will be explained according to variables such as the position of the bus bar electrodes, the thickness of the black band, and the like.

Test 3 The occurrence of the iridescence phenomenon was verified while varying the angle of the protective layer against the external light that included the protective pattern against light, formed in the black bands in Wedge shape, which separated from each other by a predetermined distance. The interval between the black bands was 73.4 pra, and the proportion of an area of the bottom surface of the wedge-shaped black bands with respect to a total area of the protective layer against external light is 30%. The size of the light emitting cell in the panel mount of the PDP apparatus applied was 912 * 693 ym. Also, the interval between an auxiliary electrode of the panel assembly and the non-light emitting region was 109 and m, and the thickness of the auxiliary electrode was 48 μ? T ?. As could be observed in test 3, the iridescence phenomenon occurred scarcely when the angle of deviation of the black bands with respect to the transverse direction (horizontal direction) of the panel assembly is 5o or less, and more particularly, it did not occur substantially the iridescence phenomenon when the angle of deviation was in the range between 1.5 and 3.5 °.

Test 4 The occurrence of the iridescence phenomenon was verified while varying the angle of the protective layer against the external light that included the protective pattern against light, formed in the black bands in wedge shape, which were separated from each other by a predetermined distance. The interval between the black bands was 107.5 μ ??, and the proportion of an area of the bottom surface of the black wedge-shaped bands with respect to a total area of the protective layer against external light is 30% . The size of the light emitting cell in the panel assembly of the PDP apparatus applied was 912 * 693 m. Also, the interval between an auxiliary electrode of the panel assembly and the non-light emitting region was 109 μp ?, and the thickness of the auxiliary electrode was 48 μ? T ?. As could be observed in test 4, the iridescence phenomenon occurred scarcely when the angle of deviation of the black bands with respect to the transverse direction (horizontal direction) of the panel assembly was 5o or less, and more particularly, it did not occur substantially the iridescence phenomenon when the angle of deviation was in the range between 2.5 and 3.5 °.

Test 5 The occurrence of the iridescence phenomenon was verified while varying the angle of the protective layer against the external light that included the light-protective pattern formed in the wedge-shaped black bands, which were separated from each other by a predetermined distance. The interval between the black bands was 73.4 μ? T ?, and the proportion of an area of the bottom surface of the wedge-shaped black bands with respect to a total area of the protective layer against external light is 30. %. The size of the light emitting cell in the panel assembly of the PDP apparatus applied was 810 * 810 μt. Also, the interval between an auxiliary electrode of the panel assembly and the non-emitting region of light was 159.5 μ? T ?, and the thickness of the auxiliary electrode was 48 and m. As could be observed in test 4, the iridescence phenomenon occurred scarcely when the angle of deviation of the black bands with respect to the transverse direction (horizontal direction) of the panel assembly was 5o or less, and more particularly, it did not occur substantially the iridescence phenomenon when the angle of deviation was in the range between 2.0 and 4.0 °. From the results of tests 3 to 5, it was discovered that the iridescence phenomenon occurred, depending on the intervals between the black bands and the sizes of the light emitting cells, however, when the angle of deviation was of about 5.0 ° or less, the iridescence phenomenon was effectively prevented, despite the intervals between the black bands and the sizes of the light emitting cells.

A display apparatus, such as a PDP apparatus and the like, according to the exemplary embodiments described above, of the present invention, can prevent the occurrence of the iridescence phenomenon and improve a contrast ratio by adapting a protective layer against light. external including a light-protective pattern, inclined by a predetermined deflection angle with respect to a longitudinal side of the panel assembly, thereby improving the image quality of the display apparatus. Also, it is possible to apply a display filter that includes a protective layer against external light according to the exemplary embodiments described above of the present invention, to a panel assembly having a certain proportion of an effective light emitting area, with this prevents the iridescence phenomenon from occurring, depending on the characteristics of the panel. According to the exemplary embodiments described above of the present invention, a protective layer against external light can be effectively adapted to prevent the occurrence of the iridescence phenomenon of the PDP panel, particularly, in which a surface discharge is carried out in a lateral surface of a discharge space.

Although a few exemplary embodiments of the present invention have been shown and described, the present invention is not limited to the exemplary embodiments described. Rather, it would be apparent to those skilled in the art that changes can be made to these exemplary embodiments, without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (20)

1. CLAIMS: 1. A protective layer against external light for a display filter, the outer light protective layer comprising: a base substrate including a transparent resin; and light-shielding patterns separated from each other on a surface of the base substrate at predetermined intervals, wherein a deflection angle formed by a direction of advance of the light-shielding pattern and a longitudinal side of the base substrate is about 5o or less .
2. 2. The outer light protective layer according to claim 1, wherein the light-protective pattern corresponds to either a wedge-shaped black band shape, a wedge-shaped black matrix shape, a waveform black wedge-shaped, a flat black band shape, a flat black matrix shape, and a flat black waveform.
3. 3. The protective layer against external light according to the indication 1, wherein the angle of deviation is in the range between approximately 1.5 and approximately 4o.
4. 4. A display filter comprising: a filter base; a base substrate including a transparent resin; and light-protective patterns, separated from each other on a surface of the base substrate at predetermined intervals, wherein a deflection angle formed by a direction of advance of the light-protective patterns and a longitudinal side of the base substrate is approximately 5o. or less.
5. 5. A display apparatus comprising: a panel assembly including a plurality of light emitting cells, divided into a light emitting region and a non-light emitting region surrounding the light emitting region, as seen from an observer; and a display filter placed in the panel assembly and including a protective layer against external light, the outer light protective layer having light-protective patterns, formed on one side of the outer light protective layer, in where an area of the light emitting region occupies approximately 60% or more of a total area of the plurality of light emitting cells, and wherein a deflection angle formed by a direction of advance of the light-shielding pattern and one longitudinal side of the panel assembly is about 5o or less. The display apparatus according to claim 5, wherein the angle of deviation is in the range between about 1.5 and about 4o. The display apparatus according to claim 5, wherein the panel assembly includes a front substrate, a rear substrate facing the front substrate, and a plurality of partition walls, which divide a plurality of discharge spaces formed between the substrate frontal and the posterior substrate. The display apparatus according to claim 7, wherein the panel assembly includes a plurality of electrodes to cause a surface discharge on a side surface of the partition wall. The display apparatus according to claim 8, wherein the panel assembly comprises: a transparent front substrate; a posterior substrate positioned to be parallel with the front substrate; a plurality of upper divider walls positioned between the front substrate and the rear substrate and adapted to divide the discharge spaces; a first discharge electrode and a second discharge electrode placed on the upper divider wall to surround the discharge spaces; a plurality of lower partition walls positioned between the upper divider wall and the rear substrate; a phosphor layer placed in the discharge spaces; and a discharge gas injected into the discharge spaces. The display apparatus according to claim 9, wherein the upper and lower divider walls are formed in a mesh form, respectively. 11. The display apparatus according to claim 7, wherein any of the front substrate and the back substrate is formed in a black band form. The display apparatus according to claim 11, wherein the non-light emitting region corresponds to any of the dividing wall or the black band shape. The display apparatus according to claim 7, wherein the transparent electrode patterns are formed in the front substrate for the Download The display apparatus according to claim 13, wherein the transparent electrode pattern is made of an opaque metal to prevent a delay of the transparent electrode pattern signal, and further includes bus bar electrode patterns passing through of the light emitting region, to be parallel with a surface of the light emitting region as seen from a horizontal plane. 15. The display apparatus according to claim 14, wherein the bus bar electrode pattern is separated from a surface of the light emitting region by a predetermined distance H1, the surface is parallel with the bar electrode pattern as it is observed from a horizontal plane, and the Hl satisfies the following equation: | Hl = 0.3 x Ll where Ll is a length of another surface connected to a surface of the light emitting region, parallel to the bar electrode pattern . The display apparatus according to claim 5, wherein the outer light protective layer includes: a base substrate including a transparent resin; Y protective patterns against light, separated from each other on a surface of the base substrate at predetermined intervals. The display apparatus according to claim 16, wherein the light-protective pattern corresponds to either a wedge-shaped black band shape, a wedge-shaped black matrix shape, a black wave shape in the shape of a wedge of wedge, a flat black band shape, a flat black matrix shape, and a flat black waveform. 18. The display apparatus according to claim 5, wherein the display filter is adhered to one side of the panel assembly by means of an adhesion agent. 19. A display apparatus comprising: a panel assembly including a plurality of light emitting cells, divided into a light emitting region, and a non-light emitting region surrounding the light emitting region as seen from an observer; and a protective layer against external light coupled to a side point of the panel assembly as observed from an observer and having light-protective patterns formed on one side of the outer light protective layer; where an area of the light emitting region occupies approximately 60% or more of a total area of the plurality of light emitting cells. The display apparatus according to claim 19, wherein a deflection angle formed by a direction of advance of the light-protecting pattern and a longitudinal side of the panel assembly is about 5o or less.