the present invention provides a driving system and a driving method for motion pictures . the present invention comprises three modules connected in series : a black image insertion module , an advanced overdrive module , and a partial frame rate control module . the black image insertion module converts the image data written in the pixels into black data . the advanced overdrive module converts the data from n bits to ( n + a ) bits and adds a boost to get an overdrive image , in which a is a positive integer . the partial frame rate control module smoothes the overdrive image . reference is made to fig3 , which illustrates the flow diagram of a preferred embodiment of the present invention in which image data with 8 bits is taken as an example . after image data of a frame is written , the black image insertion module 301 refreshes the frame to a black frame . then , the advanced overdrive module 302 begins to process image data of a next frame , so that the image data is converted from 8 bits to 10 bits and added a boost according to a look - up table to obtain an overdrive image . afterwards , the partial frame rate control module 303 smoothes the overdrive image . the boost may subdivide two adjacent gray levels into three sub - gray levels . further , due to the black frames inserted by the black image insertion module 301 , the look - up table can be simplified to take one column data into account at a time . since an object of the present invention is to simplify the driving circuit , inserting the black frames make the initial gray level voltage of pixels in each frame the same . thus , frame buffers are not needed , and the look - up table can be simplified . to make the initial gray level voltage of each pixel identical , besides black frames , any single gray level frame can be chosen to replace black frames for insertion into image data of each frame . reference is made to fig4 , which illustrates the driving method of the black image insertion module . when oe_d is low , data is written . when oe_b is low , the black frame is written . as shown in the drawing , when oe_d is low and oe_b is high , data 401 , data 402 , and data 403 are written . when oe_d is high and oe_b is low , the black frame 404 is written . since the polarity of pixels need to be zero , the electrical property of data is interlaced with positive and negative . the electrical property of the black frame is opposite that of the previous black frame . when there is a data start pulse in the vertical signal stv , image data of a first frame with n bits are written . after a period of time t bk , there is a black image start pulse in the vertical signal stv , so the black image insertion module refreshes the frame to a black frame with n bits . hence , all pixels of the first frame change from different display gray levels to the same black display gray level . later , when the advanced overdrive module overdrives the image data of a second frame , all pixels can change from the same black display gray level to display gray level of the second frame . thus , a frame buffer for comparing the image data of the first frame and the image data of the second frame can be omitted . reference is made to fig5 , which illustrates the block diagram of the advanced overdrive module 500 . after inputting the image data of the second frame with n bits , the advanced overdrive module 500 converts them into an overdrive image data with n + a bits ( a is a positive integer ). the algorithm is as follows : where gn ′[ n + a − 1 : 0 ] is the overdrive image data with n + a bits , gn [ n − 1 : 0 ] is the image data of the second frame with n bits , and boost ( gn ) is a boost with n bits . as shown in the drawing , the advanced overdrive module 500 multiplies the image data of 8 bits by 2 2 ; that is , 2 bits are added for the following subdivision of gray levels . thus , the image data is increased from 8 bits to 10 bits , and a boost ( gn ) is added in accordance with a look - up table 501 to obtain the overdrive image data . the boost may be obtained from the corresponding over - drive gray level voltage by accessing the look - up table 501 in the eeprom 502 . meanwhile , since each frame has been refreshed to the black frame , that is , the display gray level of each pixel has been changed to the same black display gray level as an initial gray level . therefore , the relationship between the initial gray level voltage , the target gray level voltage , and the over - drive gray level voltage can be simplified to one column in the look - up table . reference is made to fig6 , which illustrates the block diagram of the partial frame rate control module . the partial frame rate control module aims to smooth the over - drive image data by subdividing two adjacent gray levels into several sub - gray levels . thus , the patterns will be smoothed and few glitters will be sensed . the algorithm is as follows : where gn ″[ n − 1 : 0 ] is output image data with n bits , gn ′[ n + a − 1 : a ] is an output gray level lx with n bits of the over - drive image data with ( n + a ) bits , and pfrc ( gn ′[ a − 1 : 0 ], frame ) is an output of the relationship between the pattern and the frame . when gn ′[ a − 1 : 0 ]= 0 , the partial frame rate control module outputs 0 . when gn ′[ a − 1 : 0 ]≠ 0 , the partial frame rate control module outputs gray level lx + s with n bits in accordance with the predetermined relationship between the pattern and the frame , where s is a positive integer . as shown in fig6 , the partial frame rate control module subdivides the gray level lx and lx + s into three sub - gray levels : “ 01 ”, “ 10 ”, and “ 11 ”, denoted as ¾ ( lx )+ ¼ ( lx + s ), ½ ( lx )+ ½ ( lx + s ), and ¼ ( lx )+ ¾ ( lx + s ), respectively . when the sub - gray level is “ 01 ”, three quarters of the pixels in each frame output lx , and one quarter of the pixels output lx + s . when the sub - gray level is “ 10 ”, half of the pixels in each frame output lx , and the other half of the pixels output lx + s . similarly , when the sub - gray level is “ 11 ”, one quarter of the pixels in each frame output lx , and three quarters of the pixels output lx + s . reference is made simultaneously to fig7 a - c , which illustrate the predetermined relationship between the pattern and the frame used by the partial frame rate control module . for visually smoothing the image and preventing glitters , one pixel may output gray level lx or lx + s in different frames of one cycle having 2 a frames . for example , when gn ′[ 1 : 0 ]=‘ 01 ’, a = 2 , s = 1 , the partial frame rate control module outputs the relationship between the pattern and the frame as shown in fig7 a , in which the black parts represent the gray level lx + 1 and the white parts stand for the gray level lx . that is , in fig7 a , pixel 701 outputs the gray level lx + 1 in the n th frame , and outputs the gray level lx in the n + 1 th , the n + 2 th , and the n + 3 th frame . similarly , when gn ′[ 1 : 0 ]=‘ 10 ’, the partial frame rate control module outputs the relationship between the pattern and the frame as shown in fig7 b . that is , in fig7 b , pixel 702 outputs the gray level lx + 1 in the n th and the n + 1 th frame , and outputs the gray level lx in the n + 2 th and the n + 3 th frame . when gn ′[ 1 : 0 ]=‘ 11 ’, the partial frame rate control module outputs the relationship between the pattern and the frame as shown in fig7 c . that is , in fig7 c , pixel 703 outputs the gray level lx + 1 in the n th and the n + 2 th frame , and outputs the gray level lx in the n + 1 th , and the n + 3 th frame . hence , the advantages of the present invention are as follows . first , the driving system of the present invention inserts black frames after image data of each frame are written , so the over - drive can be processed directly according to the look - uptable without storing the previous frame . furthermore , the partial frame rate control module of the present invention smoothes the patterns of the image and prevents glitters detected by users . as is understood by a person skilled in the art , the foregoing preferred embodiments of the present invention are illustrative of the present invention rather than limiting of the present invention . it is intended that various modifications and similar arrangements are covered within the spirit and scope of the appended claims , the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures .