Patent Abstract:
An electroluminescence display and a manufacturing method therefore are disclosed in the present invention. The present invention combines an electroluminescence component and a passive component into a single display component for a display screen. The present invention has a simple manufacturing process, and decreases power consumption and the total size of a display screen.

Full Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to a display and a method for manufacturing the same, and more particularly, to an electroluminescence display and a method for manufacturing the same.  
         [0003]     2. Description of Related Art  
         [0004]     A display screen is an interface for general electronic equipment or a flexible electronic system. A super-thin flexible electronic system usually uses a reflective liquid crystal display. However, sometimes it uses a self-emitting display in a special environment. An organic light-emitting diode (hereinafter abbreviated as OLED) is the best choice as a light source for a self-emitting display on a flexible substrate. Therefore, a super-thin flexible electronic system must include OLED as a core technology for the flexible substrate.  
         [0005]     Several conventional OLED application patents have been developed for satisfying the demands stated above. U.S. Pat. No. 6,541,908, 1 ectronic light emissive displays incorporating transparent and conductive zine oxide thin film discloses the use of co-doped zinc oxide (n-type) as the cathode of organic light-emitting diode (OLED) display, field emission displays (FEDs) and vacuum microelectronic devices. U.S. Pat. No. 6,744,197 and U.S. patent App. No. 2003/0205969A1 discloses an organic electroluminescent display device and method of fabricating same. US patent App. Nos. 2003/0227582A1 and 2004/0090569A1, U.S. Pat. Nos. 6,734,930B2 and 6,738,113B2 disclose a structure for an organic light-emitting material TFT LCD and a method for making the same.  
         [0006]     US patent App. No. 2002/0033908A1 discloses a liquid crystal display for lowering power consumption. U.S. Pat. No. 6,777,710 discloses an organic light-emitting device with constant luminance. US patent App. No. 2003/0063231A1 discloses a LCD panel integrated with OLED.  
       SUMMARY OF THE INVENTION  
       [0007]     The main object of the present invention is to provide an electroluminescence display and a method for manufacturing the same which deceases both power consumption and the size of the display.  
         [0008]     For achieving the object as stated above, the present invention provides a manufacturing method for an electroluminescence display comprising: proving an upper substrate and a bottom substrate; forming a conductive layer on said bottom substrate; forming a plurality of wall structures on said conductive layer; filling a plurality of liquid crystal display media on at least one first space, wherein the at least one first space is formed by said wall structures; forming a plurality of organic material on at least one second space, wherein the at least one second space is formed by said wall structures; making a plurality of seals and at least one third space on said conductive layer; forming a protective layer on said liquid crystals; and combining said upper substrate and said bottom substrate. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]     The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:  
         [0010]      FIG. 1  shows a bottom substrate made in accordance with the manufacturing procedure of the present invention;  
         [0011]      FIG. 2  shows wall structures made in accordance with the manufacturing procedure of the present invention;  
         [0012]      FIG. 3  is a schematic diagram of the passive reflective component in accordance with the present invention;  
         [0013]      FIG. 4  is a schematic diagram of the electroluminescence component in accordance with the present invention;  
         [0014]      FIG. 5  shows a seal made in accordance with the manufacturing procedure of the present invention; and  
         [0015]      FIG. 6  is a schematic diagram of the combination of the passive display component with the electroluminescence display component in accordance with the present invention. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0016]     The present invention uses an electroluminescence component together with a passive component to provide a display (may be bistable display) having electroluminescence component and passive component. Reference is made to  FIGS. 1-6 , which show a manufacturing procedure for an electroluminescence display in accordance with a preferred embodiment of the present invention. The manufacturing procedure comprises the steps described as follows.  
         [0017]     Reference is made to  FIG. 1 , which shows a bottom substrate made in accordance with the manufacturing procedure of the present invention. First, a bottom substrate  10  is provided. The bottom substrate  10  is plastic substrate, metal-foil substrate or glass substrate. The plastic material can be polyethylene terephthalate, polyethersulfone (PES), polycarbonate, photopolymer resins or thermosetting resins. The bottom substrate  10  has a color filter layer formed thereon (not shown). Forming this color filter layer is not essential in the manufacturing process. Subsequently, a conductive layer  12  is formed on the bottom substrate  10 . Forming the conductive layer  12  utilizes LTPS or other related manufacturing techniques. The conductive layer  12  can be a TFT having a driving circuit. The conductive layer  12  is designed to be a driving electrode for the passive component and the electroluminescence component.  
         [0018]     Reference is made to  FIG. 2 , which shows wall structures made in accordance with the manufacturing procedure of the present invention. A plurality of wall structures  14  are formed on the conductive layer  12 . Forming the wall structures  14  on the conductive layer  12  further comprises a photosynthesis layer formed on the conductive layer  12  via a coating process. A photoresistant layer is formed on the photosynthesis layer via a coating process. The wall structures are defined and formed using a mask and an etching process.  
         [0019]     Reference is made to  FIG. 3 , which shows a schematic diagram of the passive reflective component in accordance with the present invention. A plurality of liquid crystal display media  16  can be filled in at least one first space  18  (shown in  FIG. 2 ) between the wall structures  14  via a one-drop-fill (ODF) process. When the filling step is finished, the substrate having the passive reflective component will be formed.  
         [0020]     Reference is made to  FIG. 4 , which shows a schematic diagram of the electroluminescence component in accordance with the present invention. First, the substrate having the passive reflective component is moved on an Organic Light Emitting Diode fixture and a vacuum is created. A plurality of organic material  20  is formed on at least one second space  22  between the wall structures  14  via a distillation process. The organic materials  20  are made of organic light emitting diodes. The passive reflective component is covered with a shadow mask design so that it is not covered by the distillation material. A cathode material  20  also has the shadow mask design that is different from a general organic light emitting diode process. Thus the substrate having the electroluminescence component is formed.  
         [0021]     Next, a plurality of seals  24  and at least one third space  26  is made on the conductive layer  12  as shown in  FIG. 5 . A bottom is made when the above processes are finished. Therein, the bottom may be having a bistable component. Reference is made to  FIG. 6 , which shows a schematic diagram of the combination of the passive display component with the electroluminescence display component in accordance with the present invention. A top substrate  28  is combined with the bottom via a pressing process or an ultraviolet exposure process. Therein, the bottom may be having a bistable component. The top substrate  28  is composed of plastic substrate, metal-foil substrate or glass substrate. The plastic material can be polyethylene terephthalate, polyethersulfone (PES), polycarbonate, photopolymer resin or thermosetting resin. Surplus liquid crystal display media  16  of the passive reflective component exude inside the third component  26  when the pressing process is being performed. Finally, the polymer inside the liquid crystal display media  16  is separated and cured thereon via the ultraviolet exposure to form a protective layer  30 . The protective layer  30  seals the liquid crystal display media  16  so that the liquid crystal display media  16  is not contacted by the electroluminescence component in actual application. The electroluminescence display (may be a passive reflective component or a passive transparent component) is made through the combination process.  
         [0022]     The type of organic light emitting diode may be either a top emitter, a bottom emitter or two-side emitter organic light-emitting diode. If a top emitter is selected for the organic light emitting, the display having organic light emitting diode does not require a backlight because the cathode is transparent. The display with a transflective function is thinner, lighter and easier to assembly.  
         [0023]     Alternatively, when a bottom emitter is selected for the organic light emitting diode, there are two independent driving circuits. A first driving circuit sits on the organic materials and a second driving circuit sits on the liquid crystal display media. The first driving circuit is designed inside of the second driving circuit. This type could be applied to a mobile panel and decreases the weight and thickness of the display panel. In addition, it also increases the opening rate of the organic materials of the bottom emitter.  
         [0024]     It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Technology Classification (CPC): 8