Patent Publication Number: US-2009231524-A1

Title: Display device, display device manufacturing method, substrate, and color filter substrate

Description:
TECHNICAL FIELD 
     The present invention relates to a display device, a display device manufacturing method, a substrate, and a color filter substrate. 
     BACKGROUND ART 
     In liquid crystal display panels in which liquid crystal is sealed between two substrates including electrodes, a sealant is used for bonding the two substrates. As a material of the sealant, thermosetting epoxy resin has been known conventionally. 
     The sealant of which main component is the thermosetting epoxy resin, however, lowers in its viscosity in the initial stage of heating in a step of heat-curing the sealant after bonding the substrates. For this reason, the alignment accuracy of substrates lowers and gap deficiency caused due to line discontinuity or a dry spot of the sealant is caused. Further, it takes about one hour to heat-cure the sealant, thereby involving lowering of the production efficiency. In addition, upsizing of the mother substrate accompanies upsizing of the heat-curing facility. 
     As a countermeasure for solving the above problems, there has been known a UV curable sealant between the substrates which is made of radically polymerized methacryl, acryl resin, or the like. 
     A method of manufacturing a liquid crystal display panel using a UV curable sealant will be described herein. First, an alignment film made of polyimide resin is formed on a substrate including a pair of electrodes, and the alignment of the liquid crystal is determined by rubbing. A UV curable sealant is applied, by screen printing and rendering using a dispenser, onto the substrate subjected to alignment film treatment to form a predetermined pattern. Spacers are then arranged on the opposed substrate for forming a gap between the substrates. Next, a necessary amount of a liquid crystal material is dropped and supplied onto a region surrounded by the sealant to bond the substrates to each other. Thereafter, a UV ray is irradiated to only a region sealed by the sealant for curing the sealant with the sealed region light-shielded. The bonded substrates thus manufactured suppresses lowering of alignment accuracy of the substrates and gap deficiency caused due to line discontinuity and a dry spot of the sealant, when compared with that using a sealant of which main component is thermosetting epoxy resin. Further, time required for curing can be shortened to increase the production efficiency. In addition, upsizing of the mother substrate requires no upsizing of the UV curing facility. 
     In a case using the UV curable sealant as above, however, the sealed region must be irradiated with the UV ray. This requires the sealant to be formed around the outer peripheral part of the light shielding layer. In recent years, the panel frame edge is required to be narrower and narrower, which accompanies research and development of substrate bonding by providing the sealant on the light shielding layer. In such substrate bonding by providing the sealant on the light shielding layer, however, the light shielding layer intercepts the irradiated UV ray to inhibit the UV ray from reaching the entire sealant, thereby leaving a part of the sealant uncured. Further, for narrowing the frame edge of a panel using a TFT substrate including a driver at its light shielding part, it is difficult for the UV ray to reach the entire sealant because of the presence of the driver, thereby leaving a part of the sealant uncured, as well. 
     In order to solve the above problems, Patent Document 1 discloses a liquid crystal display panel manufacturing method including the steps of: forming a UV curing sealant for bonding two opposed substrates to each other and for sealing liquid crystal; bonding the two substrates after aligning a substrate on which the sealant is formed to an opposed substrate; pressing the bonded substrates to have a predetermined gap; irradiating the sealant with a UV ray under adjustment of the temperature of the substrates in the range between 40° C. and 80° C., both inclusive, with a part other than the sealed part light-shielded; and forming a liquid crystal cell by dividing the substrates with a necessary terminal part left. According to this method, the sealant of a color reflective type liquid crystal panel can be UV-cured easily. 
     Patent Document 1: Japanese Unexamined Patent Application Publication 2002-202514 
     SUMMARY OF THE INVENTION 
     Problems that the Invention is to Solve 
     In the technique according to the Patent Document 1, however, the UV ray reaches deficiently in a part shaded by wirings formed in the light shielding part to lower the polymerization of the sealant. When an uncured part remains in this way, a problem rises in the reliability of the liquid crystal display panel. 
     Further, in one drop filling in which a liquid crystal material is dropped onto one of the substrates for obtaining the bonded substrates, it is necessary to transfer the liquid crystal material after bonding the substrates. If an uncured part remains in the sealed region, the sealant is melted into the liquid crystal material in transferring the liquid crystal material, namely, at temperature rise of the substrates, thereby involving lowering of the display quality and lowering of the reliability of the liquid crystal display panel. 
     Means for Solving the Problems 
     One object of the present invention is to provide a display device, a display device manufacturing method, a substrate, and a color filter substrate which facilitate UV curing of a sealant. 
     A display device in accordance with the present invention includes: first and second substrates opposed to each other and a display medium layer interposed therebetween, wherein the display medium layer has an outer peripheral part sealed by a sealant of UV curable resin provided between the first and second substrates, the first substrate includes a light shielding part including a light shielding layer provided at a part corresponding to the sealant while the second substrate includes a transparent part provided at a part corresponding to the sealant, and the light shielding part has a UV ray reflection face on a sealant side thereof. 
     In the above arrangement, in the display device provided with the sealant made of the UV curable resin formed in the light shielding part in which the light shielding layer is provided, the first substrate and the second substrate are bonded to each other by UV ray irradiation. To do so, the sealant is irradiated with the UV ray from the transparent sealant corresponding part of the second substrate for curing the sealant, wherein the UV ray irradiated from the second substrate side is reflected by the UV reflection face formed on the light shielding part of the first substrate to the sealant to irradiate the sealant again. Accordingly, even if a wiring of Al or the like is formed on the substrate to inhibit the UV ray from reaching the sealant, the UV ray is irradiated to the sealant again from the UV ray reflection face to cure an uncured part of the sealant. Thus, ordinary UV ray irradiation cures the sealant further effectively and easily. 
     In the display device in accordance with the present invention, the UV ray reflection face may be made of Al or Ag. 
     With the above arrangement, Al or Ag of the UV ray reflection face increases the reflectivity of the UV ray reflection face, thereby achieving further efficient and easy UV ray reflection to cure the sealant. 
     Further, in the display device in accordance with the present invention, the UV ray reflection face may be so composed to receive a UV ray and reflect the UV ray outward of the display medium layer. 
     With the above arrangement, entering of the UV ray reflected by the UV ray reflection face into the display medium layer is suppressed. Accordingly, adverse influence on display quality, which is caused due to influence of the UV ray on the display medium, can be suppressed. 
     The display device in accordance with the present invention may further include UV ray scattering means scattering a UV ray reflected by the UV ray reflection face. 
     With the above arrangement, the TV ray reflected by the UV ray reflection face is scattered by the UV ray scattering means to attain more effective irradiation of a part of the sealant which is light-shielded and remains uncured with the UV ray. Thus, the entire region of the sealant can be cured effectively and easily. 
     In the display device in accordance with the present invention, the UV ray scattering means may be a bumpy part formed in the light shielding part, wherein the UV ray reflection face is formed on the bumpy part. 
     In the above arrangement, the UV ray scattering means is the bumpy part formed in the light shielding part and the UV ray reflection face is formed on the bumpy part. Accordingly, the UV ray reaching the UV ray reflection face is scattered correspondingly to the bumpy part upon reflection. Thus, the entire region of the sealant can be cured further effectively and easily. 
     In the display device in accordance with the present invention, the bumpy part may be the light shielding layer of the light shielding part. 
     With the above arrangement, formation of the light shielding layer of the light shielding part as the bumpy part eliminates the need to prepare another member for forming the bumpy part. In other words, only required is to form the light shielding layer so as to have the bumpy part. Accordingly, the UV ray scattering means can be formed efficiently. 
     Furthermore, in the display device in accordance with the present invention, the UV ray scattering means may be composed of UV ray scattering particles contained in the sealant. 
     In the above arrangement, the UV ray scattering particles are contained in the sealant in advance to enable provision of the UV ray scattering means by supplying the sealant to the substrate at the same time. Accordingly, the manufacturing efficiency increases. Further, when the sealant contains the UV ray scattering particles, the UV ray scattering means spreads uniformly in the sealant, thereby attaining further effective scattering of the UV ray. 
     In the display device in accordance with the present invention, the UV ray scattering particles may have a refractivity different from the sealant. 
     In the above arrangement, the UV ray scattering particles have a refractivity different from the sealant, so that the UV ray is refracted at the interface between the sealant and the UV ray scattering particles, thereby being scattered effectively over the entire sealant. 
     Furthermore, in the display device in accordance with the present invention, the UV ray scattering particles may reflect a UV ray. 
     In the above arrangement, the UV ray scattering particles reflects the UV ray, and accordingly, the UV ray is scattered by the UV ray scattering particles effectively over the entire sealant. 
     In the display device in accordance with the present invention, the UV ray reflection face and the UV ray scattering means may be formed in this order on the light shielding layer. 
     In the above arrangement, the UV ray reflection face and the UV ray scattering means are provided in this order on the light shielding layer. Accordingly, the UV ray is reflected by the UV ray reflection face and then is scattered by the UV ray scattering means. This allows the UV ray to reach the entire sealant thoroughly, thereby curing the sealant effectively. 
     In the display device in accordance with the present invention, the UV ray scattering means may be a UV ray scattering resin layer. 
     In the above arrangement, the UV ray scattering means is the UV ray scattering resin layer, and therefore, the UV ray scattering means can be formed into a desired shape easily. Accordingly, the UV ray can be scattered easily in the entire sealant or a desired part selectively. 
     Still further, in the display device in accordance with the present invention, the UV ray scattering means may be a bumpy layer having a refractivity different from that of the sealant. 
     In the above arrangement, the UV ray scattering means is the bumpy layer having a refractivity different from that of the sealant. Accordingly, the reflected UV ray is refracted at the interface between the sealant and the bumpy layer to reach the entire sealant thoroughly, thereby curing the sealant effectively. 
     In the display device in accordance with the present invention, the UV ray scattering means may be a layer formed of a plurality of lenses. 
     In the above arrangement, the UV ray scattering means is a layer formed of a plurality of lenses, which means attainment of the UV ray scattering means having a simple structure. 
     In the display device in accordance with the present invention, a spacer may be provided between the first and second substrates, wherein the spacer is made of the same material as the UV ray scattering means. 
     In the above arrangement, the spacer made of the same material as that of the UV ray scattering means is provided between the first and second substrates. This enables formation of the spacer and the UV ray scattering means with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     In the display device in accordance with the present invention, the display part may include a display element covered with an overcoat layer, wherein the overcoat layer is made of the same material as the UV ray scattering means. 
     In the above arrangement, the display element of the display part is covered with the overcoat layer made of the same material as that of the UV ray scattering means. Accordingly, the overcoat layer and the UV ray scattering means can be formed with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     In addition, in the display device in accordance with the present invention, the display part may be composed of a light reflection region provided with a step layer for restricting a gap between the first substrate and the second substrate and a light transmission region, wherein the step layer formed in the light reflection region is made of the same material as the UV ray scattering means. 
     In the above arrangement, the display part is formed of the light transmitting region and the light reflection region in which the step layer is formed for restricting the gap between the first substrate and the second substrate, and the step layer formed in the light reflection region is made of the same material as the UV ray scattering means. Accordingly, the step layer formed in the light reflection region and the UV ray scattering means can be formed with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     A display device manufacturing method in accordance with the present invention is a method including the steps of: preparing a first and second substrates each including a display cell formation part; forming a light shielding layer on the first substrate so as to surround and enclose the display cell formation part of the first substrate; providing a UV ray reflection face on the light shielding layer formed on the first substrate; providing a sealant at a light shielding part formation part of the first or second substrate without forming a cut; supplying a display medium to the display cell formation part of the first or second substrate to which the sealant is provided; bonding the first or second substrate to which the display medium is supplied to the other substrate; and obtaining bonded substrates by curing the sealant by irradiating the sealant with a UV ray from the surface of the bonded second substrate. 
     According to the above arrangement, for manufacturing a display device in which the sealant made of the UV curable resin is formed in the light shielding part in which the light shielding layer is provided, the first substrate and the second substrate are bonded to each other by curing the sealant by UV ray irradiation. In the UV ray irradiation, the UV ray irradiated from the second substrate side is reflected to the sealant by the UV ray reflection face formed in the light shielding part of the first substrate, thereby being irradiated to the sealant again. Accordingly, even if a wiring of Al or the like is formed on the substrate to inhibit the UV ray from reaching the sealant, the sealant is irradiated again with the UV ray from the UV ray reflection face, thereby curing an uncured part of the sealant. Thus, ordinary UV ray irradiation cures the sealant further effectively and easily. 
     A color filter substrate in accordance with the present invention includes: a transparent substrate including a display part; a light shielding layer provided along an outer periphery of the display part of the transparent substrate and forming a light shielding part; and a UV ray reflection face provided on the light shielding layer on the transparent substrate. 
     With the above arrangement, the following advantages can be attained in a display device in which the sealant made of the UV curable resin is formed in the light shielding part in which the light shielding layer is provided. Namely: for bonding the color filter substrate and the TFT substrate to each other by UV ray irradiation, the UV ray is irradiated at the part of the TFT substrate which corresponds to the sealant to cure the sealant; the UV ray irradiated from the TFT substrate side is reflected to the sealant by the UV ray reflection face formed in the light shielding part of the color filter substrate to thus irradiate the sealant again. Accordingly, even if a wiring of Al or the like is formed on the TFT substrate to inhibit the UV ray from reaching the sealant, the sealant is irradiated again with the UV ray from the UV ray reflection face, thereby curing an uncured part of the sealant. Thus, ordinary UV ray irradiation cures the sealant further effectively and easily. 
     EFFECTS OF THE INVENTION 
     As described above, the present invention can provide a display device, a display device manufacturing method, a substrate, and a color filter substrate which facilitate UV curing of a sealant. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a sectional view of a liquid crystal display device  10  and a color filter substrate in accordance with Embodiment 1 of the present invention. 
         FIG. 2  is a sectional view of a liquid crystal display device  20  and a color filter substrate in accordance with Embodiment 2 of the present invention. 
         FIG. 3  is a sectional view of a liquid crystal display device  30  and a color filter substrate in accordance with Embodiment 3 of the present invention. 
         FIG. 4  is a sectional view of a liquid crystal display device  40  and a color filter substrate in accordance with Embodiment 4 of the present invention. 
         FIG. 5  is a sectional view of a liquid crystal display device  50  and a color filter substrate in accordance with Embodiment 5 of the present invention. 
         FIG. 6  is a sectional view of a liquid crystal display device  60  and a color filter substrate in accordance with Embodiment 6 of the present invention. 
         FIG. 7  is a sectional view of a liquid crystal display device  70  and a color filter substrate in accordance with Embodiment 7 of the present invention. 
         FIG. 8  is a sectional view of a liquid crystal display device  80  and a color filter substrate in accordance with Embodiment 8 of the present invention. 
         FIG. 9  is a sectional view of a liquid crystal display device  90  and a color filter substrate in accordance with Embodiment 9 of the present invention. 
         FIG. 10  is a sectional view of a liquid crystal display device  100  and a color filter substrate in accordance with Embodiment 10 of the present invention. 
         FIG. 11  is a diagram showing a step of preparing a TFT substrate  12  in a method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
         FIG. 12  is a diagram showing a step of applying a sealant  113  in the method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
         FIG. 13  is a diagram showing a step of dropping a liquid crystal material  114  in the method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
         FIG. 14  is a diagram showing a step of bonding substrates in the method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
         FIG. 15  is a diagram showing a step of irradiating a UV ray in the method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
         FIG. 16  is a diagram showing a step of performing heating and heat removal in the method for manufacturing any of the liquid crystal display devices  10  to  100  in accordance with Embodiments 1 to 10 of the present invention. 
     
    
    
     EXPLANATION OF REFERENCE NUMERALS 
     
         
         
           
               10 ,  20 ,  30 ,  40 ,  50 ,  60 ,  70 ,  80 ,  90 ,  100  liquid crystal display device 
               11 ,  21 ,  31 ,  41 ,  51 ,  61 ,  71 ,  81 ,  91 ,  101  CF substrate 
               12  TFT substrate 
               13  liquid crystal layer 
               14 ,  24 ,  34 ,  44 ,  54 ,  64 ,  74 ,  84 ,  94 ,  104  liquid crystal display panel 
               15 ,  111  glass substrate 
               16  color layer 
               17  black matrix 
               18 ,  28  UV ray scattering underlying layer 
               19  UV ray reflection film 
               48  particles having different refractivity 
               58  particles reflecting UV ray 
               68 ,  88 ,  98 ,  108  UV ray scattering resin layer 
               78  microlens layer 
               110  UV ray reflection face 
               112  wiring 
               113  sealant 
               114  liquid crystal material 
               120  column-shaped spacer 
               130  overcoat layer 
               140  step layer 
               150  UV ray 
           
         
       
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     A color filter substrate, a display device using it, and a display device manufacturing method in accordance with embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It is noted that the present invention is not limited to the following embodiments. A liquid crystal display device will be referred to herein as the display device. 
     Embodiment 1 
     (Constructions of color filter substrate  11  and liquid crystal display device  10  using it) 
       FIG. 1  is a sectional view of a liquid crystal display device  10 . The liquid crystal display device  10  includes a liquid crystal display panel  14 , a backlight unit (not shown), and the like, wherein the liquid display panel  14  includes a color filter substrate  11  and a thin film transistor substrate  12  which are opposed to each other, a liquid crystal layer  13  (display medium layer) provided therebetween, and column shaped spacers (not shown) provided between the opposed substrates. 
     In the color filter substrate (CF substrate  11 ), a color layer  16  of three primary colors of red (R), green (G), and blue (B) is formed on a glass substrate  15  to form a display part. The color layer  16  may include complementary colors of cyan, magenta, and yellow in addition to the combination of RGB. 
     A counter electrode and an alignment film (both not shown) are formed on the color layer  16 . A black matrix  17  (a light shielding layer) as a fringe for contrast is provided around the outer periphery of the color layer  16  to form a light shielding part. A UV ray scattering underlying layer  18  (UV ray scattering means) is formed on the black matrix  17 . 
     The UV ray scattering underlying layer  18  is made of a resin material, a ceramic material, or the like and has a bumpy surface forming a bumpy part. The bumpy surface may be in any shape. For example, the bumpy part may be formed of a plurality of protrusions in a semispherical shape, a conical shape, a pyramid shape, a column shape, or the like. Alternatively, continuous corrugation may be formed all over the entirety thereof. A UV ray reflection film  19  covers the surface of the UV ray scattering underlying layer  18  to form a UV ray reflection face  110 . 
     The UV ray reflection film  19  is made of metal having high reflectivity, such as Al, Ag, or the like, or an alloy thereof. For lowering the reflectivity on the observer&#39;s side, metal having low reflectivity, such as Cr or the like may be provided between the UV ray reflection film  19  and the UV ray scattering underlying film  18 . As well, an adhesion layer made of SiO 2  or the like may be provided between the UV ray reflection film  19  and the UV ray scattering underlying layer  18 . In addition, a protection layer, a reflection increasing film, or the like of SiO 2  or the like may be formed on the UV ray reflection film  19 . 
     The thin film transistor substrate (TFT substrate  12 ) includes a glass substrate  111 , TFT elements (not shown) of gate electrodes, source electrodes, drain electrodes, and the like formed on the glass substrate  111 , a transparent insulating layer, pixel electrodes, an alignment film, and the like (each not shown). Among wirings for electrically connecting the TFT elements, a wiring  112  made of Al or the like is provided in the light shielding part for narrowing the frame of the display device. 
     A sealant  113  is provided between the UV ray reflection film  19  on the black matrix  17  of the CF  11  substrate and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming a liquid crystal display cell. The sealant  113  is made of a UV curable adhesive of racially polymerized methacryl, acryl resin, or the like. 
     (Method for Manufacturing Liquid Crystal Display Device  10 ) 
     A method for manufacturing the liquid crystal display device  10  in accordance with Embodiment 1 will be described next in detail. 
     (Process of Manufacturing CF Substrate  11 ) 
     First, the glass substrate  15  is prepared. A region of the glass substrate  15  which is to be the light shielding part is sputtered to form the black matrix  17  having a width of 100 mm or smaller at the frame part thereof and a width of 5 to 50 μm between the pixels thereof. Then, a resin film (a dry film) in which red pigment is dispersed is laminated on the entirety of a region of the glass substrate  15  which is to be the display part, and exposure, development, and baking (heat treatment) are performed to form a first color layer (red). Next, a resin film in which green pigment is dispersed is laminated on the entire first color layer, and exposure, development, and baking (heat treatment) are performed to form a second color layer (green). A third color layer (blue) is formed by the same manner. 
     As an alternative method for forming the color layer  16  rather than lamination of the dry films, photosensitive resin materials in which pigments are dispersed may be applied to the entirety thereof by spin coating or slit coating. The order of forming the color layers of the colors is not limited specifically, and another order may be employed. 
     Next, ITO is deposited on the color layer  16  to form the counter electrode, and then, the alignment film is formed. 
     Subsequently, a thin film layer is formed on the black matrix  17 , and a die having a surface formed of multiple fine protrusions and depressions is pressed thereto so that the surface of the thin film layer is in a bumpy shape, thereby forming the UV ray scattering underlying layer  18 . After formation of the UV ray scattering underlying layer  18 , a metal thin film of Al or the like as the UV ray reflection film  19  is formed so as to cover the surface of the UV ray scattering underlying layer  18 . 
     Through the above steps, the CF substrate  11  is completed. 
     As an alternative process of forming the UV ray scattering underlying layer  18 , a thin film layer layered on a temporal support member having a surface formed of multiple fine protrusions and depressions may be transferred to the black matrix  17 . The temporal support member having a bumpy surface for forming the transfer film capable of scattering light may be manufactured by molding by a die of which surface has multiple fine protrusions and depressions. Alternatively, an undercoat layer capable of being modified into a base film may be provided, wherein a die of which surface has multiple fine protrusions and depressions is pressed to the undercoat layer and the undercoat layer is cured to become a film as the base film. Or, a base film of which surface is subjected to sand blasting may be used. 
     As one example of preparation of the die or the temporal support member of which surface has the multiple fine protrusions and depressions, the following may be employed. Namely, a photoresist is applied on an insulating plate; exposure and development are performed with the use of a photomask having a predetermined mask pattern or laser cutting is performed; a silver or nickel film is formed (conduction treatment) on the pattern forming face by vacuum deposition, sputtering, or the like; nickel is layered by electrocasting; and then the layers are exfoliated from the insulating plate to thus form a father die. Next, the father die is subjected to exfoliation, nickel electrocasting again, and exfoliation, thereby forming a mother die. Then, the multiple fine protrusions and depressions are formed by the thus formed mother die, thereby forming the die or the support member. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the glass substrate  111  is prepared, and the gate electrodes made of Ta or Al/Ti are formed by sputtering and are patterned. Then, a gate insulating film of SiNx and a thin film of semiconductor a-Si or p-Si or single-crystal Si are formed. Next, an etching protection film of SiNx is formed and pattern formation is performed. Contact holes, the drain electrodes, and the source electrodes are formed then. A driver is provide at the end part of the substrate in the same or another step to thus form thin film transistors. The transparent insulating layer is formed in a predetermined region. Thereafter, ITO is vacuum-deposited and pattern formation is performed to form the pixel electrodes. Next, a plurality of column-shaped spacers for defining the cell thickness are formed by photolithography. The column-shaped spacers may be formed on the CF substrate  11 . Further, spherical spacers may be formed by spraying instead. 
     Through the above steps, the TFT substrate  12  is manufactured. 
     (Process of Forming Liquid Crystal Display Panel  14 ) 
     A process of forming the liquid crystal display panel  14  will be described next with reference to  FIG. 11  to  FIG. 16 . 
     First, as shown in  FIG. 12 , the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  shown in  FIG. 11  in which the wiring  112  of Al or the like is formed. 
     Next, as shown in  FIG. 13 , the liquid crystal material  114  is dropped at 2 mg per one shot, for example, onto the TFT substrate  12  with the use of a dispenser or the like. The liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12 . 
     Subsequently, as shown in  FIG. 14 , the CF substrate  11  is aligned and bonded to the TFT substrate  12  on which the liquid crystal material  114  is dropped. Whereby, the liquid crystal display cell is formed in the region surrounded by the sealant  113  between the CF substrate  11  and the TFT substrate  12  bonded to each other. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  between the TFT substrate  12  and the CF substrate  11  bonded to each other is dispersed by the air pressure. 
     Thereafter, as shown in  FIG. 15 , a UV ray  150  is irradiated from the TFT substrate  12  side with a light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, advances straight and reaches the UV ray reflection face  110  formed in the light shielding part of the CF substrate  11 . The UV ray reflection face  110  is formed on the bumpy surface of the UV ray scattering underlying layer  18 , and therefore, the UV ray  150  reaching the UV ray reflection face  110  is reflected and scattered correspondingly to the bumpy shape. 
     The thus scattered and reflected UV ray  150  is irradiated again to the sealant  113  and is reflected also by the wiring  112  of Al or the like formed on the TFT substrate  12  so as to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, as shown in  FIG. 16 , the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  14  is formed in which the liquid crystal material  114  is sealed by the cured sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  10 . 
     Embodiment 2 
     (Constructions of Color Filter Substrate  21  and Liquid Crystal Display Device  20  Using it) 
       FIG. 2  is a sectional view of a liquid crystal display device  20  in accordance with Embodiment 2. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  20  includes a liquid crystal display panel  24 , the back light, and the like (not shown), wherein the liquid crystal display panel  24  includes the TFT substrate  12  and a CF substrate  21  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  21 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray scattering underlying layer  28  is formed on the black matrix  17 . 
     The UV ray scattering underlying layer  28  is made of a resin material, a ceramic material, or the like and has a bumpy surface. The bumpy shape of the surface is formed of faces perpendicular to a display part formation region (a region where the liquid crystal layer  13  is formed) of the CF substrate  21  and inclined faces opposite to the region. The bumpy shape of the CF substrate  21  may be any shape only if it can reflect the received UV ray outward of the liquid crystal layer  13 . The UV ray scattering underlying layer  28  is covered at the surface thereof with the UV ray reflection film  19 . 
     The sealant  113  is provided between the UV ray reflection film  19  on the black matrix  17  of the CF substrate  21  and the opposed TFT substrate  12  to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  20 ) 
     A method for manufacturing the liquid crystal display device  20  in accordance with Embodiment 2 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  21 ) 
     First, as in Embodiment 1, the color layer  16 , the black matrix  17 , the counter electrode, and the alignment film are formed on the glass substrate  15 . 
     Next, the thin film layer is formed on the black matrix  17 , and a die having a bumpy surface composed of multiple fine vertical and inclined faces is pressed to the thin film layer to allow the thin film layer to have the bumpy surface, thereby forming the UV ray scattering underlying layer  28 . After formation of the UV ray scattering underlying layer  28 , a metal thin film made of Al or the like as the UV ray reflection film  19  is formed so as to cover the surface of the UV ray scattering underlying layer  28 . 
     Through the steps, the CF substrate  21  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  24 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  21  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, advances straight and reaches the UV ray reflection face  110  formed in the light shielding part of the CF substrate  21 . The UV ray reflection face  110  is formed on the bumpy surface of the UV ray scattering underlying layer  18 , and therefore, the UV ray  150  reaching the UV ray reflection face  110  is reflected and scattered correspondingly to the bumpy shape. 
     The thus scattered and reflected UV ray  150  is irradiated again to the sealant  113  and is reflected also by the wiring  112  of Al or the like formed on the TFT substrate  12  so as to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. Since the bumpy surface of the UV ray scattering underlying layer  28  is composed of the vertical faces and the inclined faces, the UV ray  150  received at the surface (the UV ray reflection face  110 ) of the UV ray reflection film  19  formed thereon is reflected outward of the liquid crystal layer  13 . Accordingly, the reflected UV ray does not advance toward the liquid crystal layer  13  and is not irradiated to the liquid crystal layer  13 . 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are divided into a desired panel frame. 
     In this way, the liquid crystal display panel  24  is formed in which the liquid crystal material  114  is sealed by the cured sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  20 . 
     Embodiment 3 
     (Constructions of Color Filter Substrate and Liquid Crystal Display Device  20  Using it) 
       FIG. 3  is a sectional view of a liquid crystal device  30  in accordance with Embodiment 3. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  30  includes a liquid crystal display panel  34 , the back light (not shown), and the like, wherein the liquid crystal display panel  34  includes the TFT substrate  12  and a CF substrate  31  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  31 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. 
     The black matrix  17  has a surface formed in a bumpy shape serving as UV ray scattering means. The bumpy surface of the black matrix  17  may have any shape. As the bumpy shape, a plurality of protrusions in a semispherical shape, a conical shape, a pyramid shape, a column shape, or the like may be formed, or gentle corrugation may be formed all over the entirety thereof, for example. The black matrix  17  is covered at the surface thereof with the UV ray reflection film  19   
     The TFT substrate  12  includes the glass substrate  111 , the TFT elements (not shown) of the gate electrodes, the source electrodes, the drain electrodes, and the like formed on the glass substrate  111 , the transparent insulating layer, the pixel electrodes, the alignment film (each not shown), and the like. 
     The sealant  113  is provided between the UV ray reflection film  19  on the black matrix  17  of the CF substrate  31  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  30 ) 
     A method for manufacturing the liquid crystal display device  30  in accordance with Embodiment 3 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  31 ) 
     First, as in Embodiment 1, the color layer  6 , the black matrix  7 , the counter electrode, and the alignment film are formed on the glass substrate  15   
     Next, the black matrix  17  is subjected to treatment, such as etching to have the bumpy surface. Then, a metal thin film of Al or the like as the UV ray reflection film  19  is formed so as to cover the surface of the black matrix  17 . 
     Through the above steps, the CF substrate  31  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  34 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  31  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, advances straight and reaches the UV ray reflection face  110  formed in the light shielding part of the CF substrate  31 . The UV ray reflection face  110  is formed on the bumpy surface of the black matrix  17 , and therefore, the UV ray  150  reaching the UV ray reflection face  110  is reflected and scattered correspondingly to the bumpy shape. 
     The thus scattered and reflected UV ray  150  is irradiated again to the sealant  113  and is reflected also by the wiring  112  of Al or the like formed on the TFT substrate  12  so as to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  34  is formed in which the liquid crystal material  114  is sealed by the sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  30 . 
     Embodiment 4 
     (Constructions of Color Filter Substrate  41  and Liquid Crystal Display Device  40  Using it) 
       FIG. 4  is a sectional view of a liquid crystal display device  40  in accordance with Embodiment 4. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  40  includes a liquid crystal display panel  44 , the back light, and the like (not shown), wherein the liquid crystal display panel  44  includes the TFT substrate  12  and a CF substrate  41  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  41 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 . 
     The sealant  113  is provided between the UV ray reflection film  19  on the black matrix  17  of the CF substrate  41  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. The sealant  113  contains particles  48  (UV scattering particles) of 0.01 to 1 weight part per 100 weight parts having different refractivity. The particles  48  having the different refractivity means particles of which refractivity is 0.03 or larger different from that of the sealant  113 , for example, and has a mean grain diameter of for example, 1 to 5 μm, which involves no influence on the cell thickness. 
     (Method for Manufacturing Liquid Crystal Display Device  40 ) 
     A method for manufacturing the liquid crystal display device  40  in accordance with Embodiment 4 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  41 ) 
     First, as in Embodiment 1, the color layer  16 , the black matrix  17 , the counter electrode, and the alignment film are formed on the glass substrate  15 . 
     Next, the UV ray reflection film  19  is formed on the black matrix  17 . 
     Through the above steps, the CF substrate  41  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  44 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  41  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, advances straight and reaches the UV ray reflection face  110  formed in the light shielding part of the CF substrate  41  to be irradiated to the sealant  113  again. 
     Wherein, the sealant  113  contains the particles  48  having the different refractivity, so that the UV ray  150  is reflected at the interface between the sealant  113  and the particles  48  having the different refractivity to be scattered in a wide range. The thus scattered UV ray  150  is irradiated to the sealant  113  again and is reflected by the wiring  112  of Al or the like formed on the TFT substrate  12  to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  44  is formed in which the liquid crystal material  114  is sealed by the sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  40 . 
     Embodiment 5 
     (Constructions of Color Filter Substrate  51  and Liquid Crystal Display Device  50  Using it) 
       FIG. 5  is a sectional view of a liquid crystal display device  50  in accordance with Embodiment 5. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  50  includes a liquid crystal display panel  54 , the back light, and the like (not shown), wherein the liquid display pane  54  includes the TFT substrate  12  and a CF substrate  51  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  51 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 . 
     The sealant  113  is provided between the UV ray reflection film  19  on the black matrix  17  of the CF substrate and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. The sealant  113  contains particles  58  (UV ray scattering particles) of 0.01 to 1 weight part per 100 weight parts reflecting a UV ray. The particles  58  reflecting the UV ray means particles having a surface subjected to mirror finishing, for example, and has a mean grain diameter of, for example, 1 to 5 μm, which involves no influence on the cell thickness. 
     (Method for Manufacturing Liquid Crystal Display Device  50 ) 
     A method for manufacturing the liquid crystal display device  50  in accordance with Embodiment 5 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  51 ) 
     First, as in Embodiment 1, the color layer  16 , the black matrix  17 , the counter electrode, and the alignment film are formed on the glass substrate  15 . 
     Next, the UV ray reflection film  19  is formed on the black matrix  17 . 
     Through the above steps, the CF substrate  51  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  54 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  51  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, advances straight and reaches the UV ray reflection face  110  formed on the light shielding part of the CF substrate  51  to be irradiated to the sealant  113  again. 
     Wherein, the sealant  113  contains the particles  48  reflecting the UV ray  150 , so that the UV ray  150  is reflected at the interface between the sealant  113  and the particles  48  reflecting the UV ray  150  to be scattered in a wide range. The thus scattered UV ray  150  is irradiated to the sealant  113  again and is reflected by the wiring  112  of Al or the like formed on the TFT substrate  12  to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  54  is formed in which the liquid crystal material  114  is sealed by the sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  50 . 
     Embodiment 6 
     (Constructions of Color Filter Substrate  61  and Liquid Crystal Display Device  60  Using it) 
       FIG. 6  is a sectional view of a liquid crystal display device  60  in accordance with Embodiment 6. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  60  includes a liquid crystal display panel  64 , the back light, and the like (not shown), wherein the liquid crystal display panel  64  includes the TFT substrate  12  and a CF substrate  61  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  61 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 , and a UV ray scattering layer  68  is formed on the UV ray reflection film  19 . 
     The UV ray scattering layer  68  is made of a transparent material so as to allow a UV ray to transmit therethrough. The UV ray scattering layer  68  may be a UV ray scattering resin layer made of a resin material. The UV ray scattering layer  68  has a surface having refractivity different from that of the sealant  113  and formed in a bumpy shape or the like scattering the UV ray. 
     The sealant  113  is provided between the UV ray scattering layer  68  formed on the CF substrate  61  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  60 ) 
     A method for manufacturing the liquid crystal display device  60  in accordance with Embodiment 6 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of for Manufacturing CF Substrate  61 ) 
     First, as in Embodiment 1, the color layer  16 , the black matrix  17 , the counter electrode, and the alignment film are formed on the glass substrate  15 . 
     Next, the UV ray reflection film  19  and the UV ray scattering layer  68  are formed on the black matrix  17 . 
     Through the above steps, the CF substrate  61  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  64 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  61  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, reaches and is reflected by the UV ray reflection face  110  formed in the light shielding part of the CF substrate  61  to reach the UV ray scattering layer  68  formed on the surface thereof, thereby being scattered. 
     The thus scattered and reflected UV ray  150  is irradiated again to the sealant  113  and is reflected also by the wiring  112  of Al or the like formed on the TFT substrate  12  so as to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  64  is formed in which the liquid crystal material  114  is sealed by the sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  60 . 
     Embodiment 7 
     (Constructions of Color Filter Substrate  71  and Liquid Crystal Display Device  70  Using it) 
       FIG. 7  is a sectional view of a liquid crystal display device  70  in accordance with Embodiment 7. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  70  includes a liquid crystal display panel  74 , the back light, and the like (not shown), wherein the liquid crystal display panel  74  includes the TFT substrate  12  and a CF substrate  71  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  71 , the color layer  16  composing the display part and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 . 
     On the UV ray reflection film  19 , a layer (a microlens layer  78 ) composed of a plurality of lenses is formed. The microlens layer  78  is made of a transparent material so as to allow a UV ray to transmit therethrough. 
     The sealant  113  is provided between the microlens layer  78  formed on the CF substrate  71  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  70 ) 
     A method for manufacturing the liquid crystal display device  70  in accordance with Embodiment 7 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  71 ) 
     First, as in Embodiment 1, the color layer  16 , the black matrix  17 , the counter electrode) and the alignment film are formed on the glass substrate  15 . 
     Next, the UV ray reflection film  19  and the microlens layer  78  are formed on the black matrix  17 . 
     Through the above steps, the CF substrate  71  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  74 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12  with the use of a dispenser or the like. 
     Subsequently, the CF substrate  71  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, the UV ray  150  is irradiated from the TFT substrate  12  side with the light shielding mask  115  formed on the display part of the TFT substrate  12 . The irradiated UV ray  150  enters from a part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 . With the wiring  112  of Al or the like formed in the light shielding part of the TFT substrate  12 , the UV ray  150  is intercepted by the wiring  112  to leave an uncured region  116  in the sealant  113 . The UV ray  150  reaching the sealant  113 , however, reaches and is reflected by the UV ray reflection face  110  formed in the light shielding part of the CF substrate  71  to reach the microlens layer  78  formed on the surface thereof, thereby being scattered. 
     The thus scattered and reflected UV ray  150  is irradiated again to the sealant  113  and is reflected also by the wiring  112  of Al or the like formed on the TFT substrate  12  so as to be irradiated all over a wide range of the sealant  113 . Accordingly, the uncured region  116  of the sealant  113  is cured by the reflected UV ray. 
     Next, the light shielding mask  115  is removed, heating and heat removal are performed, and then, the substrates are cut into a desired panel frame. 
     In this way, the liquid crystal display panel  74  is formed in which the liquid crystal material  114  is sealed by the sealant  113  between the two substrates. Then, the back light unit and the like (not shown) are provided thereto to complete the liquid crystal display device  70 . 
     Embodiment 8 
     (Constructions of Color Filter Substrate and Liquid Crystal Display Device  70  Using it) 
       FIG. 8  is a sectional view of a liquid crystal display device  80  in accordance with Embodiment 8. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  80  includes a liquid crystal display panel  84 , the back light, and the like (not shown), wherein the liquid crystal display panel  84  includes the TFT substrate  12  and a CF substrate  81  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  81 , the color layer  16  composing the display part, the counter electrode and the alignment film (both not shown), and column-shaped spacers  120  are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 , and a UV ray scattering layer  88  is formed on the UV ray reflection film  19 . 
     The UV ray scattering layer  88  is made of a transparent material so as to allow a UV ray to transmit therethrough. The column-shaped spacers  120  are made of the same transparent material, as well. The UV ray scattering layer  88  has a surface formed into a bumpy shape or the like scattering the UV ray. 
     The sealant  113  is provided between the UV ray scattering layer  88  formed on the CF substrate  71  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  80 ) 
     A method for manufacturing the liquid crystal display device  80  in accordance with Embodiment 8 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  81 ) 
     First, the color layer  16 , the black matrix  17 , the counter electrode, and the alignment film are formed on the glass substrate  15 . The UV ray reflection film  19  is formed on the black matrix  17  in this time point. 
     Next, the column-shaped spacers  120  and the UV ray scattering layer  88  are formed with the use of the same material in the same step. 
     Through the above steps, the CF substrate  81  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. Additional column-shaped spacers may be formed on the TFT substrate  12  in this time point. 
     (Process of Forming Liquid Crystal Display Panel  84 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  of Al or the like is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12 . 
     Subsequently, the CF substrate  81  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Subsequently, as in Embodiment 6, the sealant  113  is cured by the UV ray  150 , and then, the liquid crystal display device  80  is completed. 
     In Embodiment 8, the same structure (the UV ray scattering layer  88 ) as in Embodiment 6 (the UV ray scattering layer  68 ) is used as the UV ray scattering means, but the UV ray scattering means is not limited thereto and may have the same structure as that in Embodiment 1 or 2. In any of these cases, the UV ray scattering means and the column-shaped spacers  120  can be formed with the use of the same material in the same step. 
     Embodiment 9 
     (Structures of Color Filter Substrate  91  and Liquid Crystal Display Device  90  Using it) 
       FIG. 9  is a sectional view of a liquid crystal display device  90  in accordance with Embodiment 9. The same reference numerals are assigned to the same parts as those indicated in the above embodiment for omitting description thereof. 
     The liquid crystal display device  90  includes a liquid crystal display panel  94 , the back light, and the like (not shown), wherein the liquid crystal display panel  94  includes the TFT substrate  12  and a CF substrate  91  opposed to each other and the liquid crystal layer  13  between the substrates. 
     In the CF substrate  91 , the color layer  16  composing the display part, an overcoat layer  130 , and the counter electrode and the alignment film (both not shown) are formed on the glass substrate  15 . The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The UV ray reflection film  19  is formed on the black matrix  17 , and a UV ray scattering layer  98  is formed on the UV ray reflection film  19 . 
     The UV ray scattering layer  98  is made of a transparent material so as to allow a UV ray to transmit therethrough. The overcoat layer  130  is made of the same transparent material. 
     The sealant  113  is provided between the UV ray scattering layer  98  formed on the CF substrate  91  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  90 ) 
     A method for manufacturing the liquid crystal display device  90  in accordance with Embodiment 9 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  91 ) 
     First, the color layer  16  and the black matrix  17  are formed on the glass substrate  15 . The UV ray reflection film  19  is formed on the black matrix  17  in this time point. Next, the overcoat layer  130  and the UV ray scattering layer  98  are formed on the color layer  16  and the black matrix  17 , respectively, with the use of the same material in the same step. 
     Subsequently, the counter electrode and the alignment film are formed on the overcoat layer  130 . 
     Through the above steps, the CF substrate  91  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  94 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12 . 
     Subsequently, the CF substrate  91  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Thereafter, as in Embodiment 6, the sealant  113  is cured by the UV ray  150 , and the liquid crystal display layer  90  is completed. 
     In Embodiment 9, the same structure (the UV ray scattering layer  98 ) as in Embodiment 6 (the UV ray scattering layer  68 ) is used as the UV ray scattering means, but the UV ray scattering means is not limited thereto and may have the same structure as that in Embodiment 1 or 2. In any of these cases, the UV ray scattering means and the overcoat layer  130  can be formed with the use of the same material in the same step. 
     Embodiment 10 
     (Constructions of Color Filter Substrate  101  and Liquid Crystal Display Device  100  Using it) 
       FIG. 10  is a sectional view of a liquid crystal display device  100  in accordance with Embodiment 10. The liquid crystal display device  100  is of transflective type capable of performing both transmissive mode display and reflective mode display. 
     The liquid crystal display device  100  includes a liquid crystal display panel  104 , the back light, and the like (not shown), wherein the liquid crystal display panel  104  includes the TFT substrate  12  and a CF substrate  101  opposed to each other and the liquid crystal layer  13  between the substrates. 
     The CF substrate  101  includes the glass substrate  15 , the color layer  16  and the black matrix  17  which are formed on the glass substrate  15 , the counter electrode (not shown), a step layer, and the alignment film (not shown). The black matrix  17  is provided around the outer periphery of the color layer  16  to form the light shielding part. The step layer  140 , which has a predetermined thickness, is formed in a region of the CF substrate  101  which is to be a reflection region. The thickness of the step layer  140  is preferably approximately half of the thickens of the liquid crystal layer  13 . Light for display passes through the liquid crystal layer  13  twice in the reflective mode display while passing through the liquid crystal layer  13  only one time in the transmissive mode display. Accordingly, when the thickness of a light transmissive display part of the liquid crystal layer  13  is set approximately the double of the thickness of a light reflective display part of the liquid crystal layer  13 , the light paths become the same in length to achieve favorable display in both display modes. 
     The UV ray reflection film  19  and a UV ray scattering layer  108  are formed on the black matrix  17 . 
     In the TFT substrate  12 , the TFT elements (not shown) and pixel electrodes  141  are formed on the glass substrate  111  to form the display part. A reflection layer  142  formed of a bumpy resin layer and Al film or an Al containing metal film is formed in a region of the display part which is to be the reflection region, and a transparent insulating layer (not shown) is formed so as to cover the reflection layer  142  to flatten the bumpy surface of the reflection layer  142 . The alignment film is formed on the flat surface of the transparent insulating layer. 
     The sealant  113  is provided between the UV ray scattering layer  108  formed on the CF substrate  101  and the opposed TFT substrate  12  so as to bond the substrates to each other. The sealant  113  has no liquid crystal sealing port and is arranged continuously with no cut formed so as to surround the display part, thereby forming the liquid crystal display cell. 
     (Method for Manufacturing Liquid Crystal Display Device  100 ) 
     A method for manufacturing the liquid crystal display device  100  in accordance with Embodiment 10 will be described next. Description of the same parts as those indicated in the above embodiment is omitted. 
     (Process of Manufacturing CF Substrate  101 ) 
     First, the color layer  16 , the black matrix  17 , and the counter electrode are formed on the glass substrate  15 . The UV ray reflection film  19  is formed on the black matrix  17  in this time point. 
     Next, the step layer  140  and the UV ray scattering layer  108  are formed with the use of the same material in the same step, and then, the alignment film are formed on the counter electrode and the step layer  140 . 
     Through the above steps, the CF substrate  101  is completed. 
     (Process of Manufacturing TFT Substrate  12 ) 
     Subsequently, the TFT substrate  12  is formed by the same manner as in Embodiment 1. 
     (Process of Forming Liquid Crystal Display Panel  104 ) 
     Thereafter, the sealant  113  is applied continuously without forming a cut onto the light shielding part of the TFT substrate  12  in which the wiring  112  of Al or the like is formed. 
     Next, the liquid crystal material  114  is dropped within the frame-shaped sealant  113  applied around the outer periphery of the light shielding part of the TFT substrate  12 . 
     Subsequently, the CF substrate  101  is aligned and joined to the TFT substrate  12  on which the liquid crystal material  114  is dropped. This step is performed under a vacuum state. Then, the substrates are returned to the air so that the liquid crystal material  114  is dispersed by the air pressure. 
     Next, as in Embodiment 6, the sealant  113  is cured by the UV ray  150 , and the liquid crystal display device  100  is completed. 
     In Embodiment 10, the same structure (the UV ray scattering layer  108 ) as in Embodiment 6 (the UV ray scattering layer  68 ) is used as the UV ray scattering means, but the UV ray scattering means is not limited thereto and may have the same structure as that in Embodiment 1 or 2. In any of these cases, the UV ray scattering means and the step layer  140  can be formed with the use of the same material in the same step. 
     The liquid crystal display panels  14  to  104  may not be formed as in the present embodiment. Alternatively, the liquid crystal display panels  14  to  104  may be formed in such a manner that a liquid crystal injection port is formed at the side of the liquid crystal display panel bonded by a UV curable resin; the liquid crystal material is injected therethrough; and the liquid crystal injection port is then sealed by a UV curable resin. 
     In addition, the present embodiments refer to a color filter substrate and a display device using it for LCD (liquid crystal display), but the present invention may be applied to a substrate and a display device using it for any of PD (plasma display), PALC (plasma addressed liquid crystal display), organic EL (organic electroluminescence), inorganic EL (inorganic electroluminescence), FED (field emission display), and SED (surface-conduction electron-emitter display). 
     (Effects) 
     Obtainable effects will be discussed next. 
     A display device  10  to  100  in accordance with any of Embodiments 1 to 10 includes: a CF substrate  11  to  101  and a TFT substrate  12  opposed to each other and a liquid crystal layer  13  interposed therebetween, wherein the liquid crystal layer  13  has an outer peripheral part sealed by a sealant  113  of UV curable resin provided between the CF substrate  11  to  101  and the TFT substrate  12 , the CF substrate  11  to  101  includes a light shielding part including a black matrix  17  provided at a part corresponding to the sealant  113  while the TFT substrate  12  includes a transparent part provided at a part corresponding to the sealant  113 , and the light shielding part has a UV ray reflection face  110  on a sealant  113  side thereof. 
     In the above arrangement in the display device provided with the sealant  113  made of the UV curable resin formed in the light shielding part in which the black matrix  17  is provided, the CF substrate  11  to  101  and the TFT substrate  12  are bonded to each other by UV ray irradiation. To do so, the sealant  113  is irradiated with the UV ray from the transparent sealant corresponding part of the TFT substrate  12  for curing the sealant  13 , wherein the UV ray irradiated from the TFT substrate  12  side is reflected by the UV reflection face  110  formed on the light shielding part of the CF substrate  11  to  101  to the sealant  113  to irradiate the sealant  113  again. Accordingly, even if a wiring of Al or the like is formed on the substrate to inhibit the UV ray from reaching the sealant  113 , the UV ray is irradiated to the sealant  113  again from the UV ray reflection face  110  to cure an uncured part of the sealant  113 . Thus, ordinary UV ray irradiation cures the sealant  113  further effectively and easily. 
     In the display device  10  to  110  in accordance with the present embodiment, the UV ray reflection face  110  may be made of Al or Ag. 
     With the above arrangement, Al or Ag of the UV ray reflection face  110  increases the reflectivity of the UV ray reflection face  110 , thereby achieving further efficient and easy UV ray reflection to cure the sealant  113 . 
     Further, in the display device  20  in accordance with the present embodiment, the UV ray reflection face may be so composed to receive a UV ray and reflect the UV ray outward of the liquid crystal layer  13 . 
     With the above arrangement, entering of the UV ray reflected by the UV ray reflection face  110  into the liquid crystal layer  13  is suppressed. Accordingly, adverse influence on display quality, which is caused due to influence of the UV ray on the liquid crystal, can be suppressed. 
     The display device  10  to  100  in accordance with the present embodiment may further includes UV ray scattering means  18  to  108  scattering a UV ray reflected by the UV ray reflection face  110 . 
     With the above arrangement, the UV ray reflected by the UV ray reflection face  110  is scattered by the UV ray scattering means  18  to  108  to attain more effective irradiation of a part of the sealant  113  which is light-shielded and remains uncured with the UV ray. Thus, the entire region of the sealant  113  can be cured effectively and easily. 
     In the display device  10  to  30  in accordance with the present embodiment, the UV ray scattering means may be a bumpy part formed in the light shielding part, wherein the UV ray reflection face  110  is formed on the bumpy part. 
     In the above arrangement, the UV ray scattering means is the bumpy part formed in the light shielding part and the UV ray reflection face  110  is formed on the bumpy part. Accordingly, the UV ray reaching the UV ray reflection face  110  is scattered correspondingly to the bumpy part upon reflection. Thus, the entire region of the sealant  113  can be cured further effectively and easily. 
     In the liquid crystal display device  30  in accordance with the present embodiment, the bumpy part may be the black matrix  17  of the light shielding part. 
     With the above arrangement, formation of the black matrix  17  of the light shielding part as the bumpy part eliminates the need to prepare another member for forming the bumpy part. In other words, only required is to form the black matrix  17  so as to have the bumpy part. Accordingly, the UV ray scattering means can be formed efficiently. 
     Furthermore, in the display device  40 ,  50  in accordance with the present embodiment, the UV ray scattering means may be composed of UV ray scattering particles  48 ,  58  contained in the sealant  113 . 
     In the above arrangement, the UV ray scattering particles  48 ,  58  are contained in the sealant  113  in advance to enable provision of the UV ray scattering means by supplying the sealant  113  to the substrate at the same time. Accordingly, the manufacturing efficiency increases. Further, when the sealant  113  contains the UV ray scattering particles  48 ,  58 , the UV ray scattering means spreads uniformly in the sealant  113 , thereby attaining further effective scattering of the UV ray. 
     In the display device  40  in accordance with the present embodiment, the UV ray scattering particles  48  may have a refractivity different from the sealant  113 . 
     In the above arrangement, the UV ray scattering particles  48  have a refractivity different from the sealant  113 , so that the IV ray is refracted at the interface between the sealant  113  and the UV ray scattering particles, thereby being scattered effectively over the entire sealant  113 . 
     Furthermore, in the display device  50  in accordance with the present embodiment, the UV ray scattering particles  58  may reflect a UV ray. 
     In the above arrangement, the UV ray scattering particles  58  reflects the UV ray, and accordingly, the UV ray is scattered by the UV ray scattering particles  58  effectively to the entire sealant  113 . 
     In the display device  60  to  100  in accordance with the present embodiment, the UV ray reflection face  110  and the UV ray scattering means  68  to  108  may be formed in this order on the black matrix  17 . 
     In the above arrangement, the UV ray reflection face  110  and the UV ray scattering means  68  to  108  are provided in this order on the black matrix  17 . Accordingly, the UV ray is reflected by the UV ray reflection face  110  and then is scattered by the UV ray scattering means  68  to  108 . This allows the UV ray to reach the entire sealant  113  thoroughly, thereby curing the sealant  113  effectively. 
     In the display device  60 ,  80  to  100  in accordance with the present embodiment, the UV ray scattering means may be a UV ray scattering resin layer  68 ,  88  to  108   
     In the above arrangement, the UV ray scattering means is the UV ray scattering resin layer  68 ,  88  to  108 , and therefore, the UV ray scattering means can be formed into a desired shape easily. Accordingly, the UV ray can be scattered easily in the entire sealant  113  or a desired part selectively. 
     Still further, in the display device  70  in accordance with the present embodiment, the UV ray scattering means may be a bumpy layer  78  having a refractivity different from that of the sealant  113 . 
     In the above arrangement, the UV ray scattering means is the bumpy layer  78  having a refractivity different from that of the sealant  113 . Accordingly, the reflected UV ray is refracted at the interface between the sealant  113  and the bumpy layer  78  to reach the entire sealant  113  thoroughly, thereby curing the sealant  113  effectively. 
     In the display device  70  in accordance with the present embodiment, the UV ray scattering means may be a layer  78  formed of a plurality of lenses. 
     In the above arrangement, the UV ray scattering means is a layer  78  formed of a plurality of lenses, which means attainment of the UV ray scattering means having a simple structure. 
     In the display device  80  in accordance with the present embodiment, a column-shaped spacer  120  may be provided between the CF substrate  101  and the TFT substrate  12 , wherein the column-shaped spacer  120  is made of the same material as the UV ray scattering means. 
     In the above arrangement, the column-shaped spacer  120  made of the same material as that of the UV ray scattering means  88  is provided between the CF substrate  101  and the TFT substrate  12 . This enables formation of the column-shaped spacer  120  and the UV ray scattering means  88  with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     In the display device  90  in accordance with the present embodiment, the display part may include a display element covered with an overcoat layer  130 , wherein the overcoat layer  130  is made of the same material as the UV ray scattering means  98 . 
     In the above arrangement, the display element of the display part is covered with the overcoat layer  130  made of the same material as that of the UV ray scattering means  98 . Accordingly, the overcoat layer  130  and the UV ray scattering means  98  can be formed with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     In addition, in the display device  100  in accordance with the present embodiment, the display part may be composed of a light reflection region provided with a step layer  140  for restricting a gap between the CF substrate  101  and the TFT substrate  12  and a light transmission region, wherein the step layer  140  formed in the light reflection region is made of the same material as the UV ray scattering means  108 . 
     In the above arrangement, the display part is formed of the light transmitting region and the light reflection region in which the step layer  140  is formed for restricting the gap between the CF substrate  101  and the TFT substrate  12 , and the step layer  140  formed in the light reflection region is made of the same material as the UV ray scattering means. Accordingly, the step layer  140  formed in the light reflection region and the UV ray scattering means  108  can be formed with the use of the same material in the same step, thereby increasing the production efficiency of the device. 
     A display device  10  to  100  manufacturing method in accordance with the present embodiment is a method including the steps of: preparing a CF substrate  11  to  101  and a TFT substrate  12  each including a display cell formation part; forming a black matrix  17  on the CF substrate  11  to  101  so as to surround and enclose the display cell formation part of the CF substrate  11  to  101 ; providing a UV ray reflection face  110  on the black matrix  17  formed on the CF substrate  11  to  101 ; providing a sealant  113  at a light shielding part formation part of the CF substrate  11  to  101  or the TFT substrate  12  without forming a cut; supplying a liquid crystal material  114  to the display cell formation part of the CF substrate  11  to  101  or the TFT substrate  12  to which the sealant  113  is provided; bonding the CF substrate  11  to  101  or the TFT substrate  12  to which the liquid crystal material  114  is supplied to the other substrate; and obtaining bonded substrates by curing the sealant  113  by irradiating the sealant  113  with a UV ray from the surface of the bonded TFT substrate  12 . 
     According to the above arrangement, for manufacturing a display device in which the sealant  113  made of the UV curable resin is formed in the light shielding part in which the black matrix  17  is provided, the CF substrate  10  to  101  and the TFT substrate  12  are bonded to each other by curing the sealant  113  by UV ray irradiation. In the UV ray irradiation, the UV ray irradiated from the TFT substrate  12  side is reflected to the sealant  113  by the UV ray reflection face  110  formed in the light shielding part of the CF substrate  11  to  101 , thereby being irradiated to the sealant  113  again. Accordingly, even if a wiring of Al or the like is formed on the substrate to inhibit the UV ray from reaching the sealant  113 , the sealant  113  is irradiated again with the UV ray from the UV ray reflection face  110 , thereby curing an uncured part of the sealant  113 . Thus, ordinary UV ray irradiation cures the sealant  113  further effectively and easily. 
     A color filter substrate  11  to  101  in accordance with the present embodiment includes: a glass substrate  15  including a display part; a black matrix  17  provided along an outer periphery of the display part of the glass substrate  15  and forming a light shielding part; and a UV ray reflection face  110  provided on the black matrix  17  on the glass substrate  15 . 
     With the above arrangement, the following advantages can be attained in a display device in which the sealant  113  made of the UV curable resin is formed in the light shielding part in which the black matrix  17  is provided. Namely: for bonding the color CF substrate  11  to  101  and the TFT substrate  12  to each other by UV ray irradiation, the UV ray is irradiated at the part of the TFT substrate  12  which corresponds to the sealant to cure the sealant  113 ; the UV ray irradiated from the TFT substrate  12  side is reflected to the sealant  113  by the UV ray reflection face  110  formed in the light shielding part of the color filter substrate  11  to  101  to thus irradiate the sealant  113  again. Accordingly, even if a wiring of Al or the like is formed on the TFT substrate  12  to inhibit the UV ray from reaching the sealant  113 , the sealant  113  is irradiated again with the UV ray from the UV ray reflection face  110 , thereby curing an uncured part of the sealant  113 . Thus, ordinary UV ray irradiation cures the sealant  113  further effectively and easily. 
     INDUSTRIAL APPLICABILITY 
     As described above, the present invention is useful for display devices, display device manufacturing methods, substrates, and color filter substrates.