Abstract:
Disclosed are a semiconductor apparatus and a manufacturing method thereof. The manufacturing method of the semiconductor apparatus includes: forming a semiconductor chip on a semiconductor substrate; adhering a carrier wafer with a plurality of through holes onto the semiconductor chip; polishing the semiconductor substrate; forming a first via hole at the rear side of the polished semiconductor substrate; forming a first metal layer below the polished semiconductor substrate and at the first via hole; and removing the carrier wafer from the polished semiconductor substrate.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is based on and claims priority from Korean Patent Application No. 10-2011-0092044, filed on Sep. 9, 2011, with the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
       TECHNICAL FIELD 
       [0002]    The present disclosure relates to a vacuum window, and more particularly, to a vacuum window with an embedded information display by using a principle of a field emission display. 
       BACKGROUND 
       [0003]    Recently, cases where outer walls of houses and buildings are constructed by using glass for the elegant exterior of a building have increased. In the case of the glass outer walls, heat efficiency of the building is deteriorated due to incidence of direct light or interior heat loss through the glass behind the esthetic beauty. In order to supplement the drawback of the glass outer wall or glass window, a dual or triple layer window, in which a film or a dry air or vacuum layer is formed within single glass, is introduced. 
         [0004]      FIGS. 1 and 2  illustrate a perspective view and a cross-sectional view of a vacuum window in the related art, respectively. 
         [0005]    Referring to  FIGS. 1 and 2 , a vacuum window  100  in the related art is manufactured, in which the circumference of a space in which a spacer  140  is disposed between twofold plate windows  110  and  120  is sealed with a sealing member  130  to be sealed in vacuum, and inner air thereof is exhausted through an exhaust tube  150  which is formed at one side plate glass to be in a depressurized state. 
         [0006]    In the vacuum window  100  in the related art, since the vacuum layer is formed between the two plate glasses  110  and  120 , the structure is similar to a field emission display. The field emission display is a device of displaying information by using light generated when electrons emitted from a field emission emitter such as a carbon nanotube (CNT) are accelerated toward an anode electrode to collide with a phosphor. 
         [0007]    Accordingly, the present disclosure provides a vacuum window with an embedded information display by adding the structure of the field emission display of the vacuum window in the related art. 
       SUMMARY 
       [0008]    The present disclosure has been made in an effort to provide a vacuum window which displays information on a glass wall or a glass window by adding a structure of a field emission display to the vacuum window for insulation of a building. 
         [0009]    An exemplary embodiment of the present disclosure provides a vacuum window with an embedded information display, including: a first plate glass; a second plate glass installed to face the first plate glass; a sealing material configured to seal a space between the first plate glass and the second plate glass to be maintained in a vacuum state; a spacer inserted between the first plate glass and the second plate glass to separate the first plate glass and the second plate glass; a cathode electrode formed in a horizontal line form at the inside of the second plate glass and including a field emission emitter emitting electrons; and an anode electrode formed in a vertical line form at the inside of the first plate glass and including a phosphor generating light by the electrons emitted from the field emission emitter. 
         [0010]    According to the exemplary embodiment of the present disclosure, it is possible to manufacture a vacuum window with an embedded information display through a field emission principle, by providing the vacuum window to which a structure of a field emission display is added. 
         [0011]    The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIGS. 1 and 2  are a perspective view and a cross-sectional view of a vacuum window in the related art, respectively. 
           [0013]      FIGS. 3 and 4  are a plan view and a side view of a vacuum window with an embedded information display according to an exemplary embodiment of the present disclosure, respectively. 
           [0014]      FIG. 5  is a diagram for describing a display principle of a vacuum window with an embedded information display according to the exemplary embodiment of the present disclosure. 
           [0015]      FIG. 6  is a diagram for describing an implementation example of a color dot matrix of a vacuum window according to the exemplary embodiment of the present disclosure. 
           [0016]      FIG. 7  is a diagram illustrating a case where a dot matrix is formed in some regions of a vacuum window according to the exemplary embodiment of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0017]    In the following detailed description, reference is made to the accompanying drawing, which form a part hereof. The illustrative embodiments described in the detailed description, drawing, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. 
         [0018]    Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In describing the present disclosure, well-known functions or constructions will not be described in detail since they may unnecessarily obscure the understanding of the present disclosure. 
         [0019]      FIGS. 3 and 4  are a plan view and a side view of a vacuum window with an embedded information display according to an exemplary embodiment of the present disclosure, respectively. 
         [0020]    Referring to  FIGS. 3 and 4 , the vacuum window according to the exemplary embodiment of the present disclosure includes a first plate glass  310 , a second plate glass  320 , a sealing material  330 , a spacer  340 , a cathode electrode  350 , an anode electrode  360  and the like. Herein, the first plate glass  310  and the second plate glass  320  are disposed to face each other. 
         [0021]    The sealing material  330  seals a space between the first plate glass  310  and the second plate glass  320  to be maintained in a vacuum state. To this end, the sealing material  330  may be made of a glass frit material. 
         [0022]    The spacer  340  is inserted between the first plate glass  310  and the second plate glass  320  to separate the first plate glass and the second plate glass. Herein, the spacer  340  may be formed with a predetermined thickness so that the first plate glass  310  or the second plate glass  320  is not deformed or damaged by air pressure. 
         [0023]    The cathode electrode  350  is formed in a horizontal line form at the inside of the second plate glass  320  and includes a field emission emitter  352  emitting electrons. 
         [0024]    The anode electrode  360  is formed in a vertical line form at the inside of the first plate glass  310  and includes a phosphor  362  generating light by the electrons emitted from the field emission emitter  352 . 
         [0025]    That is, as illustrated in  FIG. 5 , the vacuum window according to the exemplary embodiment of the present disclosure is configured by a structure in which the field emission emitter  352  and the phosphor  362  are formed at a point where the anode electrode  360  and the cathode electrode  350  meet, and thus the electrons emitted from the field emission emitter  352  reach the phosphor  362  to generate light, when sufficient magnitude of voltage is applied to the anode electrode  360  as compared with the cathode electrode  350 . In this case, each dot configured by the field emission emitter  352  and the phosphor  362  may be variously displayed by a sequential dot matrix driving method. 
         [0026]    The field emission emitter  352  may use a nano field emitter such as a carbon nanotube (CNT). 
         [0027]    The phosphor  362  may use a vacuum fluorescent display (VFD) phosphor which does not require high voltage, but may also use a general cathode luminescence (CL) phosphor in the case where the voltage may be properly applied. 
         [0028]    The vacuum window according to the exemplary embodiment of the present disclosure may further include a third plate glass  370  which is installed to face the second plate glass  320 , in order to improve mechanical strength and insulation performance. Herein, the third plate glass  370  may be coupled with the second plate glass  320  by using a sealing agent  372 . Inert gas such as argon, xenon, krypton and the like is injected between the second plate glass  320  and the third plate glass  370 . 
         [0029]    The vacuum window according to the exemplary embodiment of the present disclosure may further include a controller  380  which is electrically connected with the cathode electrode  350  formed at the second plate glass  320  and the anode electrode  360  formed at the first plate glass  310 , in order to control display information. Herein, the controller  380  is directly installed at the vacuum window or installed at a means covering the vacuum window such as window frames to be electrically connected with the cathode electrode  350  and the anode electrode  360 . The controller  380  includes a wireless communication module (not shown) to allow an operator to change the display information. 
         [0030]      FIG. 6  is a diagram for describing an implementation example of a color dot matrix of a vacuum window according to the exemplary embodiment of the present disclosure. 
         [0031]    As illustrated in  FIG. 6 , in the vacuum window according to the exemplary embodiment of the present disclosure, red, green and blue phosphors  362   a,    362   b  and  362   c  are configured to be adjacent to each other and cathode electrodes  350   a,    350   b ,  350   cs  with a field emission emitter  352  corresponding thereto are installed, such that it is possible to implement a color dot matrix by a color combination. 
         [0032]      FIG. 7  is a diagram illustrating a case where a dot matrix is formed in some regions of a vacuum window according to the exemplary embodiment of the present disclosure. 
         [0033]    As illustrated in  FIG. 7 , the vacuum window according to the exemplary embodiment of the present disclosure may be configured so as not to obstruct a sight by maintaining transparent glass in the rest regions except for the regions with the dot matrix by forming the dot matrix only in some regions. 
         [0034]    From the foregoing, it will be appreciated that various embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various embodiments disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.