TWI263967B - Display driving method - Google Patents

Abstract

The present invention is a driving method for display whose display area is controlled by a common grid signal and a segment grid signal. A set of common selected signal and common non-selected signal, having a phase difference between them, are combined to form a common grid signal and a set of segment selected signal and segment non-selected signal. A set of segment selected signal and segment non-selected signal, having a phase difference between them, are combined to form a segment grid signal. In a selected duty zone, the present invention allows the common grid signal and the segment grid signal to be equal to the common selected signal and the segment selected signal, respectively, and uses the phase difference between each grid signal and its corresponding selected signal to generate a driving voltage whose square root is greater than the threshold voltage. Thus, the display area is in ON condition.

Description

1263967 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明A method of driving a display. The prior art is a simple matrix liquid crystal display (SM-LCD), which is configured as a plurality of common electrodes (also referred to as scan electrodes) and a plurality of segment electrodes in a lattice configuration. (also referred to as a column electrode)' and the germanium is sandwiched between the common electrode and the segment electrode. Between the two electrodes, a driving voltage signal is supplied from the outside, and each pixel is driven by a potential difference between the electrodes. In addition, the SM-LCD has a problem of crosstalk due to an increase in the number of common electrodes, so that the difference between the voltage applied by the display pixel and the voltage applied to the non-display pixel is reduced, so the number of common electrodes of the SM-LCD is reduced. There will be restrictions. In the SM-LCD, a Twisted Nematic (TN) type LCD is an isotropic P-type nematic liquid crystal having a positive ferroelectric ratio between the electrode substrates, and a long-axis direction of the liquid crystal molecules and an electrode. The planes are arranged in parallel, and the long-axis direction of the liquid crystal molecules is twisted at a 90-degree angle from one side of the electrode substrate to the other side of the electrode substrate. Next, the operation principle of the TN-type LCD will be described. Referring to FIG. 1A, The schematic diagram of the operation principle of the TN type LCD when no voltage is applied is shown in FIG. 1A, and the liquid crystal molecules 102 are twisted and aligned according to the alignment direction of the surfaces of the glass substrate 1〇4 and the glass substrate 106. The liquid crystal molecules 102 are sandwiched by the polarizing plate 108 and the polarizing plate no in an orthogonal state of 10494-PI-375 5 1263967, so that the incident light passing through the polarizing plate 108 is twisted and aligned by the 90 degree of the liquid crystal molecules 102 (also referred to as optical rotation). The state of the TN-type LCD is shown in FIG. 1B, which is a schematic diagram of the operation principle of the TN-type LCD when an applied voltage is applied. It can be seen from FIG. 1B that the liquid crystal molecules are visible. 1〇2 The optical rotation disappears, so the incident light does not pass through the polarizing plate 110, and it exhibits a dark state. The relationship between the applied voltage and the relative light transmittance of the TN type 1^0 is shown in FIG. As can be seen from Fig. 2, when the TN type LCD is originally in a bright state, if the applied voltage exceeds the threshold voltage (Vth), the relative light transmittance changes abruptly, and the TN type LCD becomes dark. The TN type LCD The relative light transmittance is only related to the root mean square 値Vrms of the driving voltage in a wide frequency range, that is, νπ^Ίί[Κ(ί)]2Λ···(1), where V(1) is the voltage difference, T is a single \ 〇 时间 time. For the current ΤΝ type LCD, the driving method needs to adopt multi-voltage output mode, and the LCD display is realized by the voltage difference. Therefore, additional bias is needed. The voltage divider circuit increases the operating current. This is a problem that the battery supplied by the battery cannot operate for a long time. To understand the driving method of the conventional LCD, please refer to the following. 3A, which is a conventional LCD The display pattern achieved by the driving method is as shown in FIG. 3A, and the display pattern 30 is controlled by four common electrode signals (COM 1-COM4) and two segment electrode signals (SEGn, SEGn+1). Please refer to FIG. 3B, which shows that 10494-PI-375 6 1263967 is a common selection signal, a common non-selection signal, a segment selection signal, a segment non-selection signal, a common electrode in the display pattern of FIG. 3A. The signal waveform of the signal and the segment electrode signal, and FIG. 3B also depicts the signal waveform of the display area added to the intersection of the COM4 and SEGn signals. As shown in FIG. 3B, the common electrode signal (C0M1-C0M4) and the segment electrode The signal (SEGn, SEGn+Ι) has four duty zones in unit time T. Each common electrode signal has a responsibility area at different time points as a selection responsibility area. Here, the common electrode signal in the responsibility area is selected as a common selection signal, and three responsibility areas are non-selection responsibility areas, and no responsibility is selected here. The common electrode signal in the zone is a common non-selection signal. For example, the common electrode signal C0M1 outputs a common selection signal in the Ο-0.25T (selection responsibility area), and a common non-selection signal is output in the remaining 0.75T (non-selection responsibility area). When the display area is to be turned on, the signal corresponding to the selected area of the sector electrode signal (SEGn, SEGn+Ι) is the section selection signal; when the display area is to be turned off, the area is made The signal in the segment electrode signal corresponding to the selection of the area of responsibility is the segment non-selection signal. Furthermore, as can be seen from Fig. 3B, the bias voltages include Vl = Vcc, V2 = 2/3 Vcc, V3 = 1 / 3 Vcc, and the ground potential Vgnd, where Vcc is the positive voltage supplied by the power supply. In the unit time T shown in FIG. 3B, the voltage of the common selection signal (Vcom selection)=V1, the voltage of the common non-selection signal (Vcom non-selection)=V3, the voltage of the section selection signal (Vseg selection)= Vgnd, and the voltage of the segment non-selected signal (Vseg is not selected) = V2 ◦ Next, according to formula (1), the turn-on driving voltage (Vonrms) and the turn-off driving voltage (Voffrms) are obtained. ◦ 10494-PI-375 7 1263967

Vonrms =, 丄 [(Kcom selection - Kseg selection) 2 丄Γ + (Kcom non-selection - Kseg selection / non-selection) 2 V Τ 4 4 =- Vgndf + (V3 - Vgnd/V2f ~T] =0.557Vcc

Voffrms = g; [(Fcom selected - not selected) 2 jr + (Fcom non-selected - F tons selected / unselected) 2 | r] = J^(Vl ~ ^2)2 + (V3 - VgndiVl)1 ^T ] π~~ϊ π ϊ Γ3~ =' a [(-(tetra)-τ + (-(tetra)-7Ί VT 3 4 3 4 =0.333Vcc Here, assuming the threshold voltage (Vth) = 0.45Vcc, Voffrms<Vth<Vonrms, that is, when the driving voltage is greater than the threshold voltage, the display area is turned on; and when the driving voltage is less than the threshold voltage, the display area is turned off. From the above, the conventional LCD system is used. The change of the display area is controlled by the voltage difference between the common selection signal and the section selection signal. Since the display method of the conventional LCD must have a bias voltage dividing circuit, etc., the operating current is large and power consumption is required. For a battery-supplied LCD, there is a problem that it cannot operate for a long time. SUMMARY OF THE INVENTION In view of the above, the present invention provides a display driving method using a phase difference between a common electrode signal and a segment electrode signal when selecting a responsibility area. To control the change of the display area, thus eliminating the need to use current-consuming bias 10494-PI-375 8 1263967 The voltage circuit and the like can simplify the driving circuit of the display and save power loss. To achieve the above and other objects, the present invention provides a driving method of the display, which comprises a common electrode and a segment electrode to control the change of the display area. In the driving method, a common selection signal and a common non-selection signal are first provided, wherein the common selection signal and the common non-selection signal are different from each other by a first phase difference; and the segment selection signal and the segment non-selection signal are provided, wherein the segment selection The signal and the segment non-selection signal are different from each other by a second phase difference. Then, the common selection signal and the common non-selection signal are combined to generate a common electrode signal, and are provided to the common electrode, and the combined segment selection signal and the segment non-selection signal are combined. The segment electrode signal is generated and supplied to the segment electrode to control the change of the display region, wherein the common electrode signal and the segment electrode signal comprise N duty regions in unit time τ, N is greater than or equal to 1, and the common electrode The signal includes a common selection signal of one responsibility area and a common non-responsibility area of N-1 areas of responsibility. Select the signal. Here, the one area of responsibility that uses the common selection signal is called the selection responsibility area, and the other N-1 areas of responsibility are called the non-selection area. When the display area is to be turned on, the section electrode is made. The signal corresponding to the selection of the area of responsibility in the signal is the section selection signal; when the display area is to be turned off, the signal in the section electrode signal corresponding to the selection of the area of responsibility is the section non-selection signal. Furthermore, when displayed When the zone is on, the drive voltage is defined to be turned on. When the display zone is off, the drive voltage is turned off:

Vonrms = Λ丄 [_ _ - Kveg selection) 2 丄Γ + non-selection - Κ ν π selection / non-selection) 2 ^ Γ] V Τ Ν Ν 10494-ΡΙ-375 9 1263967

Voffrms =Jy[(Fcomm - Vseg^m)2 ^ + (Kc(10) non-selection-Kseg selection/non-selection) 2 Γ]

Vonrms: turn on the driving voltage

Voffrms: turn off the drive voltage

Vcom selection: common selection signal when selecting the responsibility area

Vcom non-selection: common non-selection signal when non-selection of responsibility area

Vseg selection: section selection signal when selecting the responsibility area

Vseg non-selection: section non-selection signal when selecting the area of responsibility

Vseg selection/Vseg non-selection: the section selection signal or the section non-selection signal when the responsibility area is not selected, so that the driving voltage is higher than the threshold voltage, and the driving voltage is less than the threshold voltage. In a preferred embodiment of the invention, the phase difference between the segment selection signal and the common non-selection signal is equal to the phase difference between the segment non-selection signal and the common non-selection signal. Furthermore, the segment non-selection signal is in phase with the common selection signal. In a preferred embodiment of the invention, the display is a liquid crystal display. The liquid crystal display is a twisted nematic liquid crystal display. The invention also proposes a driving method of the display. The display includes a common electrode and a segment electrode to control variations in the display area. In this driving method, a common selection signal and a common non-selection signal are first provided, wherein the common selection signal and the common non-selection signal are composed only of the first voltage level and the second voltage level; and the segment selection signal is provided. And the segment non-selection signal, wherein the segment selection signal and the segment non-selection signal are only composed of the third power 10494-PI-375 10 1263967 pressure level and the fourth voltage level. Then, the common selection signal and the common non-selection signal are combined to generate a common electrode signal, and are provided to the common electrode, and the segment selection signal and the segment non-selection signal are combined to generate the segment electrode signal, and are provided to the segment electrode. In order to control the change of the display area. The common electrode signal and the segment electrode signal respectively include N responsibility areas in the unit time T, and the common electrode signal includes a common selection signal of one responsibility area and a common non-selection signal of N-1 responsibility areas. Here, the definition of the responsibility area using the common selection signal is called the selection responsibility area, and the other N-1 responsibility areas are called the non-selection responsibility area. When the display area is to be turned on, the signal corresponding to the selected area of the segment electrode signal is the segment selection signal, and the driving voltage is turned on; when the display area is to be turned off, the segment electrode signal is made. The signal corresponding to the selection of the area of responsibility is the section non-selection signal, and defines the driving voltage to be turned off:

Vonrms =士 [Listen to (10) - Select) 2 to Γ + (Fc(10) non-selection - heg selection / non-selection) 2 Γ]

V Τ N N

Voffrms = 士[(以_选-.g非选)2士士7>(8)(10)Non-selection-Kseg selection/non-selection) 2 βΓ] V τ Ν Ν

Vonrms: turn on the driving voltage Voffrms: turn off the driving voltage

Vcom selection: common selection signal when selecting the responsibility area

Vcom non-selection: common non-selection signal when non-selection of responsibility area

Vseg selection: section selection signal when selecting the responsibility area

Vseg non-selection: section non-selection signal when selecting the area of responsibility

Vseg selection/Vseg non-selection: the section selection signal when the non-selection area is selected or 10494-PI-375 1263967 is a section non-selection signal, so that the driving voltage is turned on is greater than the threshold voltage that causes the light transmittance to change abruptly, and the driving voltage is turned off. Less than the threshold voltage. In a preferred embodiment of the invention, the first voltage level is equal to the third voltage level and the second voltage level is equal to the fourth voltage level. In summary, the present invention combines a common selection signal and a common non-selection signal with a phase difference to generate a common electrode signal, and selects a signal and a segment non-selection signal according to another group of phase difference signals. To combine to generate segment electrode signals. The change in the display area is controlled by the phase difference between the common electrode signal and the segment electrode signal when the duty zone is selected to generate a driving voltage having a root mean square greater than or less than the threshold voltage. Since the present invention does not require a bias voltage dividing circuit, it is possible to simplify the driving circuit of the display and achieve power saving. The above and other objects, features and advantages of the present invention will become more <RTIgt; The driving method is used for a liquid crystal display (for example, a twisted nematic liquid crystal display (ΤΝ-LCD)). It is well known that displays such as twisted nematic liquid crystal displays include a common electrode and a segment electrode, and the voltage signals provided on the common electrode and the segment electrode are used to generate a root mean square added to the display area.驱动 A drive voltage greater than or less than the threshold voltage to control the change of the display area. Next, the driving method of the display of the present invention will be explained. 10494-PI-375 1263967 In the driving method of the preferred embodiment of the present invention, a common selection signal and a common non-selection signal are first provided, wherein the common selection signal and the common non-selection signal are different from each other by a first phase difference; and segment selection is provided. The signal and the segment non-selection signal, wherein the segment selection signal and the segment non-selection signal are different by a second phase difference. Then, the common selection signal and the common non-selection signal are combined to generate a common electrode signal, and are provided to the common electrode, and the segment selection signal and the segment non-selection signal are combined to generate the segment electrode signal, and are provided to the segment electrode. Control changes in the display area. Please refer to FIG. 4A, which is a waveform diagram of a common selection signal, a common non-selection signal, a segment selection signal, and a segment non-selection signal in a driving method of a display according to a preferred embodiment of the present invention. As can be seen from Figure 4A, the common selection signal, the common non-selection signal, the segment selection signal, and the segment non-selection signal have only two voltage levels, namely a positive voltage (Vcc) and a ground potential (GND), and the positive voltage It is provided by the power supply. Moreover, the common selection signal and the common non-selection signal have a phase difference, and the segment selection signal and the segment non-selection signal also have another phase difference. In addition, in FIG. 4A, the segment non-selection signal is in phase with the common selection signal, and the phase difference tl between the segment selection signal and the common non-selection signal is equal to the phase difference between the segment non-selection signal and the common non-selection signal. T2, but it is to be understood by those skilled in the art that the above assumptions are only a preferred embodiment and are not intended to limit the invention. Here, assuming that tl=t2=t, the 1/2 period of the common selection signal is Tf. Next, the common electrode signal and the segment electrode signal are each included in the unit time T by N duty zones, and N is greater than or equal to 1. A positive integer, and the common 10494-PI-375 13 1263967 electrode signal includes a common selection signal of one responsibility area and a common non-selection signal of N-1 responsibility areas. It is assumed here that this area of responsibility for using the common selection signal is called the selection responsibility area, and the other N-1 areas of responsibility are called non-selection areas. When the display area is to be turned on, the signal corresponding to the selected area of the segment electrode signal is the segment selection signal; when the display area is to be turned off, the corresponding area of the segment electrode signal is selected. The signal is a segment non-selection signal. When the display area is turned on, the driving voltage applied to the display area with the root mean square 値 greater than the threshold voltage is defined as the driving voltage is turned on; similarly, when the display area is turned off, the root mean square is added to the display area. A drive voltage that is less than the threshold voltage is defined as turning off the drive voltage:

Vonrms =J— [{Vcom'M - Reg selected) 2 丄:Γ + (Fc (filled non-selected - factory choice / non-selected) _ N ... (2) V T N yv

Voffrms ______ = (10) election - (10) - factory slightly selected / non-selected) 2 - &quot;•(3)

Vonrms: turn on the driving voltage

Voffrms: turn off the drive voltage

Vcom selection: common selection signal when selecting the responsibility area

Vcom non-selection: common non-selection signal when non-selection of responsibility area

Vseg selection: section selection signal when selecting the responsibility area

Vseg non-selection: section non-selection signal when selecting the area of responsibility

Vseg selection/Vseg non-selection: section selection signal or section non-selection signal when non-selection of the area of responsibility 10494-PI-375 1263967 FIG. 4B illustrates a driving method of the display according to a preferred embodiment of the present invention For the waveform diagram of the common electrode signal (C0M1-C0M4) and the segment electrode signals of three different display materials (1111,0000, 1000), please refer to FIG. 4A and FIG. 4B simultaneously. In the preferred embodiment, the common electrode signal (C0M1-C0M4) and the segment electrode signal (SEG (llll), SEG (OOOO), SEG (100)) include four duty zones in unit time T. The common electrode signal COM1 outputs a common selection signal in the responsibility area 1 (referred to as the selection responsibility area of COM1), and outputs a common non-selection signal in the responsibility area 2-4 (referred to as the non-selection responsibility area of COM1). The common electrode signal COM2 outputs a common selection signal in the responsibility area 2 (COM2 selection responsibility area), and outputs a common non-selection signal in the responsibility areas 1, 3 and 4 (C〇M2 non-selection responsibility area). The common electrode signal C0M3 outputs a common selection signal in the responsibility area 3 (COM3 selection responsibility area), and outputs a common non-selection signal in the responsibility areas 1, 2 and 4 (COM3 non-selection responsibility area). The common electrode signal COM4 outputs a common selection signal in the responsibility area 4 (COM4 selection responsibility area), and a common non-selection signal is output in the non-selection responsibility area of the responsibility area i-MCOM4. When the display area is all turned on, that is, the data to be displayed is (1111), the signals in the section of the sector electrode signal SEG(im) corresponding to the selection of the four different common electrode signals are all segments. Selecting the signal 'The result is that the segment electrode signal SEG (1111) of this display data is equal to the segment selection signal. When the display area is to be completely turned off, that is, when the data to be displayed is (〇〇〇〇), the signal for selecting the area of responsibility corresponding to the four different common electrode signals in the segment electrode signal SEG(0000) is The segment non-selection signal 10494-PI-375 15 1263967, the result is that the segment electrode signal SEG (OOOO) of the display data is equal to the segment non-selection signal. When the data to be displayed is (1000), the segment electrode signal SEG (100) corresponds to the signal of the selection responsibility area of the common electrode signal COM1, that is, the signal at the responsibility area 1, equal to the segment selection signal, and the rest The signal in the area of responsibility 2-4 is the section non-selection signal. According to Fig. 4A, Fig. 4B, formula (2) and formula (3), the turn-on driving voltage (Vcmrms) and the turn-off driving voltage (Voffrms) °' of the present embodiment are obtained.

Vonrms

T

[(R(10) election-heart selection) 2 + (Fc(10) non-selection-selection/non-selection) 2

It 1 5l_

Vcc 1.118 —Vcc ▲π Voffrms

T

[(Fc(10)---g non-selection) 2 &gt; + non-selection-Aeg selection/non-selection) 2 |r] 3t W :0.886

Vcc

Tf

Vcc here, assuming the threshold voltage (Vth) = 0.45Vcc: 0.45, in this case, just take

10494-PI-375 16 1263967

Voffrms = 0.39Vcc &lt; Vth &lt; Vonrms = 0.5Vcc, that is, if the turn-on driving voltage is greater than the threshold voltage, the display area is inevitably controlled to be on; and when the turn-on driving voltage is less than the threshold voltage, the display area is controlled to be off. It should be noted that the preferred embodiment described above has a phase difference between the common selection signal and the common non-selection signal, and is composed of two voltage levels (Vcc and GND), and the segment selection signal and the segment. The non-selection signal also has a phase difference, and is also composed of the two voltage levels (Vcc and GND). However, those skilled in the art are aware that the present invention is not limited to whether only two voltage levels are used. The composition is only one of the protection ranges of the present invention as long as it utilizes the difference in phase between the signals to generate a display driving voltage whose root mean square 値 is greater than or less than the threshold voltage. In addition, in the driving method of the display of the present invention, the common selection signal and the common non-selection signal are composed only of the first voltage level and the second voltage level, and the segment selection signal and the segment non-selection signal are only The three voltage levels are combined with the fourth voltage level, even a special case where the first voltage level is equal to the third voltage level and the second voltage level is equal to the fourth voltage level, and then the pulse width modulation (PWM) is utilized. The method calculates the waveforms of the common selection signal, the common non-selection signal, the segment selection signal, and the segment non-selection signal, and combines the segment electrode signal with the common electrode signal to generate a root mean square 値 greater than or less than a critical value The driving voltage of the voltage to control the change of the display is also in the spirit of the present invention not using a multi-voltage level. In summary, the present invention utilizes the phase difference between the common selection signal and the common non-selection signal to generate a common electrode signal combined with the common selection signal and the common non-selection signal 10494-PI-375 1263967, and the utilization area. The phase difference between the segment selection signal and the segment non-selection signal generates a segment electrode signal combined by the segment selection signal and the segment non-selection signal, and uses the common electrode signal and the segment electrode signal when selecting the responsibility region The phase difference is such that a drive voltage having a root mean square 値 greater than or less than a threshold voltage is generated to control the change of the display area. Since the present invention does not require a bias voltage dividing circuit, it is possible to simplify the driving circuit of the display device and achieve the purpose of power saving. While the present invention has been described in its preferred embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the invention is to be determined by the scope of the appended claims. Brief description of the diagram: Figure 1A shows the schematic diagram of the operation principle of the TN-type LCD when no voltage is applied; Figure 1B shows the schematic diagram of the operation principle of the TN-type LCD when the applied voltage is applied; The relationship between the applied voltage and the relative light transmittance of the TN type LCD; the 3A is a display pattern achieved by a conventional LCD driving method; and FIG. 3B is a 3A A waveform diagram of a common selection signal, a common non-selection signal, a segment selection signal, a segment non-selection signal, a common electrode signal, and a segment electrode signal in the display pattern; FIG. 4A is a view of a preferred embodiment of the present invention; The common selection signal, the common non-selection signal, the segment selection signal, and the waveform of the segment non-selection signal of the driving method of the display 10494-PI-375 18 1263967 of the embodiment; and FIG. 4B is a diagram according to the present invention. Waveforms of the common electrode signals (C0M1-COM4) of the display driving method of the preferred embodiment and the segment electrode signals of three different display materials (1111,0000, 1000). Schematic description: 102: liquid crystal molecules 104, 106: glass substrate 108, 110: polarizing plate 30: display graphic 10494-PI-375

Claims (1)

1263967 picking, patent application scope 1. A display driving method, the display comprises a common electrode and a segment electrode to control a change of a display area, the driving method comprises the following steps: providing a common selection signal and a common non-selection a first phase difference between the common selection signal and the common non-selection signal, providing a segment selection signal and a segment non-selection signal, the segment selection signal being different from the segment non-selection signal by a second phase And combining the common selection signal and the common non-selection signal to generate a common electrode signal, and providing the common electrode signal to the common electrode, and combining the segment selection signal and the segment non-selection signal to generate a segment electrode signal, And providing the segment electrode to control the change of the display area. 2. The driving method of the display of claim 1, wherein the common electrode signal and the segment electrode signal comprise N duty zones in a unit time T, and the common electrode signal includes one responsibility The common selection signal of the area and the common non-selection signal of the N-1 area of responsibility, the one area of responsibility using the common selection signal is called a selection responsibility area, and the other N-1 areas of responsibility are called a non-selection area of responsibility. When the display area is to be turned on, the signal corresponding to the selected area of the area electrode signal is selected as the section selection signal; when the display area is to be turned off, the area is made The signal in the segment electrode signal corresponding to the selection of the area of responsibility is the non-selection signal of the segment. 3. The driving method of the display of claim 2, wherein when the display area is in the on state, a voltage of 10494-PI-375 20 1263967 is turned on, when the display area is in the off state. When defining a turn-off drive voltage: Vonrms = JhiVcomM - select by g) 1 2 3 4 5 6 7 go (Fc (10) non-selection - select / non-select) 2 Γ ] V Τ Ν Ν Voffrms 10494-PI-375 1 = Select - Keg non-selection) 2 gentry + (F_ non-select - Kseg selection / non-selection) 2 Γ] 2 \Τ Ν Ν Vonrms : The turn-on drive voltage Voffrms: the turn-off drive voltage Vcom select: when selecting the responsibility area The common selection signal Vcom is not selected: the common non-selection signal Vseg when the non-selection area is selected: the section selection signal Vseg when the responsibility area is selected is not selected: the section non-selection signal when the area of responsibility is selected 3 Vseg selection/Vseg non-selection: the section selection signal or the section non-selection signal when the non-selection area is selected causes the on-drive voltage to be greater than a threshold voltage, and the off-drive voltage is less than the threshold voltage. The driving method of the display of claim 3, wherein the phase difference between the segment selection signal and the common non-selection signal is equal to the phase difference between the segment non-selection signal and the common non-selection signal. 5 The driving method of the display of claim 3, wherein the section non-selection signal is in phase with the common selection signal. 6 The driving method of the display of claim 1, wherein the display is a liquid crystal display. [7] The driving method of the display 1263967 of claim 6, wherein the liquid crystal display is a twisted nematic liquid crystal display. 8. A method of driving a display, the display comprising a common electrode and a segment electrode to control a change of a display area, the driving method comprising the steps of: providing a common selection signal and a common non-selection signal, the common selection The signal and the common non-selection signal are only composed of a first voltage level and a second voltage level, and provide a segment selection signal and a segment non-selection signal, and the segment selection signal and the segment non-selection The signal is composed only of a third voltage level and a fourth voltage level; and the common selection signal and the common non-selection signal are combined to generate a common electrode signal, and is supplied to the common electrode, and the section is combined Selecting a signal and the segment non-selection signal to generate a segment electrode signal, and providing the segment electrode to the segment electrode, thereby controlling the change of the display region; wherein the common electrode signal and the segment electrode signal are within a unit time T Each includes N responsibility areas, and the common electrode signal includes a common selection signal of one responsibility area and a common non-selection signal of N-1 responsibility areas, so that The one area of responsibility of the common selection signal is called a selection responsibility area, and the other N-1 area of responsibility is called a non-selection area of responsibility; when the display area is to be turned on, the section electrode signal is made The signal corresponding to the selection of the area of responsibility is to select a signal for the section, and defines a driving voltage to be turned on; when the display area is to be turned off, the signal in the section electrode signal corresponding to the selection of the area of responsibility is selected. For this section, select the signal and define a turn-off drive voltage: V ο nrms 10494-PI-375 22 1263967 = λ丄^心(4)Select-heart sigh the corpse/^+-say non-selection-heart sigh /Non-selection)2^^] V Τ Ν Ν Voffrms =λ —[(Kcom-select non-select)' + (Kc(10) non-selection-heart sigh/non-selected wide-Γ] V Τ Ν N Vonrms : This is on The driving voltage VoffYms: the off driving voltage Vcom is selected: the common selection signal Vcom when the responsibility area is selected is not selected: the common non-selection signal Vseg when the non-selection area is selected: the section selection signal when the responsibility area is selected Vseg non-selection: the section of the non-selection signal Vseg selected when the area of responsibility is selected /Vseg Non-selection: the section selection signal or the section non-selection signal when the non-selection area is selected causes the on-drive voltage to be greater than a threshold voltage, and the off-drive voltage is less than the threshold voltage. The driving method of the display device, wherein the first voltage level is equal to the third voltage level, and the second voltage level is equal to the fourth voltage level. 10. As described in claim 8 A display method of a display, wherein the display is a liquid crystal display. 11. The display method of the display of claim 10, wherein the liquid crystal display is a twisted nematic liquid crystal display. 10494-PI-375 23