please refer to fig2 and 3 . to provide a better explanation , the present invention takes an example of a 12 - bit original gray - scale data 60 and comprises the following steps : 1 . dividing the original gray - scale data into a high - bit data 70 ( 9 bits from 0 to 8 ) and a low - bit data 80 ( 3 bits from 0 to 2 ) within the driving integrated circuit device of led ( step 10 ); 2 . converting the low - bit data 80 ( 3 bits ) into eight ( 8 ) extra 1 - bits added to the high - bit data 70 ( 9 bits from 0 to 8 ) respectively to form a multi - stack display data 90 which has fewer bits ( 10 bits from 0 to 9 ) ( step 20 ); the number of extra 1 - bit depends on the bits of the divided low - bit data . that is , the number of extra 1 - bit is processed based on 2 &# 39 ; s power by the bits of the low - bit data . there are 3 bits in the low - bit data and eight extra 1 - bits is converted and added to the high - bit data respectively ( as shown in fig3 ). the last extra bit at the bottom of the eight multi - stack display data 90 with bit value 0 and defined weight value 1 is always fixed . 3 . adding each high - bit data 70 with corresponding extra 1 - bit to form a set of 10 - bit multi - stack display data 90 ( 10 bits from 0 to 9 ) ( step 30 ); 4 . converting each defined weight values 93 according to the corresponding bit values 92 located in the 10 - bit multi - stack display data 90 and accumulating each defined weight value 100 to obtain a sum of weight values 110 ; ( step 40 ); 5 . displaying an identical sum of weight values 110 and illumination of original gray - scale data by adopting the display data 90 with a higher updating rate ( step 50 ). it means the illumination will repeat 8 times of updating rate within the same period with less gray - scale data bits hardware required . accordingly , the aforementioned steps constitute the gray - scale data bit processing method applied in a driving integrated circuit device of led . referring to fig2 and 3 , the present invention is characterized in that it divides the original gray - scale data 60 into two portions including the high - bit data 70 and the low - bit data 80 by means of the light - emitting diode driving integrated circuit device , and the low - bit data 80 is converted into eight ( 8 ) extra 1 - bits respectively added to the high - bit data 70 . moreover , a increased updating rate which means the frequency of repeating high - bit display data 90 within one complete cycle , and the so - called one complete cycle refers to the time period required to completely display the original gray scale data 60 , that is , the time spent by the led driving integrated circuit device to actuate and completely light up and shut off the leds . the scale of brightness of the leds is varied and controlled by the data bit , which is called the gray - scale number . the gray - scale data is composed of a plurality of bits , the higher the gray - scale number , the greater the number of bits required to compose the gray scale data . the ascribed weight value of each bit of the gray - scale data entering the driving integrated circuit device of led is different , and bit values 62 , 72 , 82 , 92 are used to convert the defined weight values 63 , 73 , 83 , 93 to obtain the final displayable gray - scale generated from the led . referring to fig3 ( taking the 12 - bit original gray - scale data 60 as an example ), when in use , the 12 - bit original gray - scale data 60 ( bit array 61 : from 0 to 11 ; bit values 62 from the lower bit : 1 , 1 , 0 , 0 , 1 , 1 , 0 , 0 , 1 , 1 , 0 , 1 ; the defined weight values 63 from the lower bit : 1 , 2 , 4 , 8 , 16 , 32 , 64 , 128 , 256 , 512 , 1024 , 2048 ) in the light - emitting diode driving integrated circuit device is first divided into two portions , including the 9 - bit high - bit data 70 ( bit array 71 : from 0 to 8 ; bit values 72 from the lower bit : 0 , 1 , 1 , 0 , 0 , 1 , 1 , 0 , 1 ; defined weight values 73 from the lower bit : 8 , 16 , 32 , 64 , 128 , 256 , 512 , 1024 , 2048 ) and the 3 - bit low - bit data 80 ( bit array 81 : from 0 to 2 ; bit values 82 : 1 , 1 , 0 ; defined weight values 83 : 1 , 2 , 4 ), then the 3 - bit low - bit data 80 is converted into eight ( 8 ) extra 1 - bits and added to the high - bit data 70 respectively to form a set of 10 - bit display data 90 . in other words , the 9 - bit high - bit data 70 is added with the extra 1 - bit to form the 10 - bit display data 90 . meanwhile , the last one of the eight extra 1 - bits with bit value 0 and defined weight value 1 is always fixed . the bit values 92 of the eight groups contain those eight extra bit 0s respectively changed from the said 3 - bit lower - bit data ( from the lower bit ): 1 , 1 , 0 into four times 0 , two times 1 , once 1 and the last extra bit assigned bit value 0 and defined weight value 1 is always fixed . finally , each of the 12 - bit original gray - scale data 60 is converted into the 10 - bit display data 90 with fewer bits ( bit array 91 : from 0 to 9 ; corresponding bit values 92 of the eight groups of bits from 1 to 9 are identical : 0 , 1 , 1 , 0 , 0 , 1 , 1 , 0 , 1 , and the bit values 92 of the eight groups contain those eight extra 1 - bits respectively converted from the said 3 - bit lower - bit data : 0 , 1 , 1 into 4 times 0 , two times 1 , once 1 and the last extra bit assigned bit value 0 and defined weight value 1 is always fixed . the defined weight values 93 of the eight groups of bits from 1 to 9 of the bit array 91 are identical : 1 , 2 , 4 , 8 , 16 , 32 , 64 , 128 , 256 , and the defined weight values 93 of the eight extra bits 0 of the bits 91 respectively shows : 1 , 1 , 1 , 1 , 1 , 1 , 1 , 1 ), by which the individual weight values 100 of the eight 10 - bit display data having less digits of data bit converted from the 12 - bit original gray - scale data 60 respectively are 358 , 358 , 358 , 358 , 359 , 359 , 359 , 358 , which have a sum of weight value 110 of 2867 , hence , the sum of weight value 110 of the eight 10 - bit display data having less bits of data bit is identical to the 12 - bit original sum of weight value 64 ( both being 2867 ). consequently , the present invention provides a solution to reduce the hardware requirement with a narrower band width and a more convenient and safe circuit design to process more gray - scale numbers with enhanced efficiency and accuracy free from bit - error - rate , as well as increase the updating rate of the high - bit portions separated from the original gray - scale data . to put it short , the present invention is provided with the effectiveness to operate more gray - scale data bits and reduce probability for errors in bit transmission , as well as improving the illumination refreshing rate of the high - bit portions and increasing functionality . it is , of course , to be understood that the embodiments described herein are merely an illustration of the present invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the present invention as set forth in the following claims .