Abstract:
A display panel including a pixel unit and a scan line. The pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The scan line is coupled to the first, the second, and the third sub-pixels and comprises a first side and a second side. The first sub-pixel is disposed on the first side and the second sub-pixel is disposed on the second side.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The invention relates to a display panel, and more particularly to a display panel comprising sub-pixels. 
         [0003]    2. Description of the Related Art 
         [0004]    Because cathode ray tubes (CRTs) are inexpensive and provide high definition, they are utilized extensively in televisions and computers. With technological development, new flat-panel displays are continually being developed. When a larger display panel is required, the weight of the flat-panel display does not substantially change when compared to CRT displays. Generally, flat-panel displays comprises liquid crystal displays (LCD), plasma display panels (PDP), field emission displays (FED), and electroluminescent (EL) displays. 
         [0005]      FIG. 1  is a schematic diagram of a conventional display panel. The conventional display panel  100  comprises scan lines S 1 , S 2 , data lines D 1R ˜D 2B , and pixel units  111 ˜ 114 . The pixel units  111 ˜ 114  utilize scan lines S 1 , S 2  and data lines D 1R ˜D 2B  to receive signal. Each of the pixel units  111 ˜ 114  comprises three sub-pixels. For example, the pixel unit  111  comprises sub-pixels R 11 , G 11 , and B 11  for respectively displaying a red color, a green color, and a blue color. When the brightness of the sub-pixels R 11 , G 11 , and B 11  is controlled, the pixel unit  111  can display the desired color. 
         [0006]    The display panel  100  utilizes a power line to provide a power signal PVDD to each sub-pixel. Since the power signal PVDD can carries large current, the width of the power line is larger than other signal lines during a layout process. Thus, the aperture ratio of the display panel  100  is reduced. 
       BRIEF SUMMARY OF THE INVENTION 
       [0007]    Display panels are provided. An exemplary embodiment of a display panel comprises a pixel unit and a scan line. The pixel unit comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel. The scan line is coupled to the first, the second, and the third sub-pixels and comprises a first side and a second side. The first sub-pixel is disposed on the first side and the second sub-pixel is disposed on the second side. 
         [0008]    Electronic systems are also provided. An exemplary embodiment of an electronic system comprises a voltage converter and a display panel. The voltage converter transforms an external voltage into an operating voltage. The display panel displays a frame according to the operating voltage and comprises a pixel unit and a scan line. The pixel unit comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel. The scan line is coupled to the first, the second, and the third sub-pixels and comprises a first side and a second side. The first sub-pixel is disposed on the first side and the second sub-pixel is disposed on the second side. 
         [0009]    A detailed description is given in the following embodiments with reference to the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]    The invention can be more fully understood by referring to the following detailed description and examples with references made to the accompanying drawings, wherein: 
           [0011]      FIG. 1  is a schematic diagram of a conventional display panel; 
           [0012]      FIG. 2  is a schematic diagram of an exemplary embodiment of an electronic system; 
           [0013]      FIG. 3  is a schematic diagram of an exemplary embodiment of a display panel; 
           [0014]      FIG. 4  is a schematic diagram of an exemplary embodiment of the pixel unit; 
           [0015]      FIG. 5  is a schematic diagram of another exemplary embodiment of the pixel unit; 
           [0016]      FIG. 6  is a schematic diagram of another exemplary embodiment of the pixel unit; and 
           [0017]      FIG. 7  is a schematic diagram of another exemplary embodiment of the pixel unit. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0018]    The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims. 
         [0019]      FIG. 2  is a schematic diagram of an exemplary embodiment of an electronic system. The electronic system  200  is a personal digital assistant (PDA), a cellular phone, a digital camera, a television, a global positioning system (GPS), a car display, an avionics display, a digital photo frame, a notebook computer (NB), or a personal computer (PC). As shown in  FIG. 2 , the electronic system  200  comprises a voltage converter  210  and a display panel  220 . The voltage converter  210  transmits an external voltage S EX  into an operating voltage S O . For example, if the type of the external voltage S EX  is an alternating current (AC) type, the voltage converter  210  transforms the type of the external voltage S EX  from the AC type to a direct current (DC) type. If the type of the external voltage S EX  is the DC type, the voltage converter  210  transforms the level of the external voltage S EX . The display panel  220  displays a frame according to the operating voltage S O . 
         [0020]      FIG. 3  is a schematic diagram of an exemplary embodiment of a display panel. The display panel  220  comprises pixel units P 11 ˜P mn  and scan lines S 1 ˜S n . The scan lines S 1 ˜S n  are coupled to the pixel units P 11 ˜P mn  for transmitting scan signals generated by a gate driver  310  to the pixel units P 11 ˜P mn . Additionally, the display panel  220  further comprises data lines D 1R ˜D mW  for transmitting data signals generated by a source driver  320  to the pixel units P 11 ˜P mn . 
         [0021]    The number of the data lines is determined by the number of the sub-pixels of one pixel unit. If each pixel unit comprises three sub-pixels, the pixel unit is coupled to three data lines. Taking the pixel unit P 11  as an example, if the pixel unit P 11  comprises three sub-pixels, the pixel unit P 11  is coupled to data lines D 1R , D 1G , and D 1B . If the pixel unit P 11  comprises four sub-pixels, the pixel unit P 11  is coupled to data lines D 1R , D 1G , D 1B , and D 1W . Since the structures of the pixel units P 11 ˜P mn  are the same, the pixel unit P 11  is given as an example. 
         [0022]      FIG. 4  is a schematic diagram of an exemplary embodiment of the pixel unit. The pixel unit P 11  comprises sub-pixels  411 ˜ 413  displaying a red color, a green color, and a blue color, respectively. The sub-pixels  411  and  412  respectively dispose on two sides of the scan line S 1 . The sub-pixel  413  passes across the scan line S 1 . The measure of a luminosity area of the sub-pixel  411  is the same as or is different from the measure of a luminosity area of the sub-pixel  412 . In this embodiment, the measure of a luminosity area of the sub-pixel  411  is the same as the measure of a luminosity area of the sub-pixel  412 . The measure of a luminosity area of the sub-pixel  413  exceeds the measure of a luminosity area of the sub-pixel  411 . 
         [0023]    If the location of the scan line S 1  is adjusted, the measures of the luminosity areas of the sub-pixels  411  and  412  are elastically controlled. Thus, the aperture ratio of the display panel is increased. For example, if the scan line moves to the sub-pixel  411 , the measure of the luminosity area of the sub-pixel  411  is reduced and the measure of a luminosity area of the sub-pixel  412  is increased. Referring to  FIG. 1 , since the scan lines S 1  and S 2  are located on the upper side of the corresponding sub-pixels, the measures of the luminosity areas of the sub-pixels are limited by the location of the scan lines S 1  and S 2 . For example, since the scan line S 1  is located on the upper side of the sub-pixels R 11 , G 11 , and B 11 , the measures of the luminosity areas of the sub-pixels R 11 , G 11 , and B 11  are limited by the location of the scan line S 1 . The locations of the scan lines of the display panel  200  are arbitrarily adjusted such that the measures of the luminosity areas of the sub-pixels are elastically controlled. Thus, the aperture ratio of the display panel  200  is increased. 
         [0024]    Since the layer of the scan line S 1  is different from the layer of the sub-pixel  413 , the sub-pixel  413  can pass across the scan line S 1 . Additionally, the data line D 1R  is disposed on the left-sides of the sub-pixels  411  and  412 . The data line D 1G  is disposed on the right-sides of the sub-pixels  411  and  412 . The data line D 1B  is disposed on the left-side of the sub-pixel  413 . A power line  421  is disposed between the data lines D 1R  and D 1G  and passes across the sub-pixels  411  and  412  for providing a power signal PVDD to the sub-pixels  411  and  412 . A power line  422  passes across the sub-pixel  413  for providing the power signal PVDD to the sub-pixel  413 . 
         [0025]      FIG. 5  is a schematic diagram of another exemplary embodiment of the pixel unit. The pixel unit P 11  comprises sub-pixels  511 ˜ 514 . The sub-pixels  511 ˜ 514  display a red color, a green color, a blue color, and a white color. The sub-pixels  511  and  513  are disposed on the upper side of the scan line S 1 . The sub-pixels  512  and  514  are disposed on the lower side of the scan line S 1 . In this embodiment, the measures of the luminosity areas of the sub-pixels  511 - 514  are the same. 
         [0026]      FIG. 6  is a schematic diagram of another exemplary embodiment of the pixel unit.  FIG. 6  is similar to  FIG. 5  with the exception that the measures of the luminosity areas of the sub-pixels  611  and  613  are the same, and the measures of the luminosity areas of the sub-pixels  612  and  614  are the same. Since the location of each scan line is elastically adjusted, the measures of the luminosity areas of the sub-pixels  612  and  614  are larger. 
         [0027]      FIG. 7  is a schematic diagram of another exemplary embodiment of the pixel unit.  FIG. 7  is similar to  FIG. 5  with the exception that the locations of each scan line and each data line are elastically adjusted. Thus, the measures of the luminosity areas of the sub-pixels  711 ˜ 714  are different. For example, if the scan line S 1  moves to sub-pixels  711  and  713 , the measures of the luminosity areas of the sub-pixels  711  and  713  are reduced, and the measures of the luminosity areas of the sub-pixels  712  and  714  are increased. When the data line D 1W  moves to the right-sides of sub-pixels  713  and  714 , the measures of the luminosity areas of the sub-pixels  713  and  714  are increased. Thus, the measures of the luminosity areas of the sub-pixels  711 - 714  are different. 
         [0028]    While the invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.