TWM660558U - Software-controlled Cholesterol LCD Device - Google Patents

Abstract

A cholesterol liquid crystal device with software timing control has a cholesterol liquid crystal panel, a power supply module and a single chip system; a software timing controller in the single chip system is electrically connected to the power supply module and a scanning drive element and a data drive element of the cholesterol liquid crystal panel respectively; the software timing controller sets and controls the power supply module to output first to fourth voltage amplitudes respectively in the first to fourth channels; the software timing controller modulates a voltage setting instruction to the power supply module according to an image signal, so that the power supply module successively modulates different cross-voltages for resetting multiple pixel electrode pairs and displaying a new picture according to the voltage setting instruction and the first to fourth voltage amplitudes, so as to quickly update and display the picture, saving the space and cost of setting up a hardware timing controller.

Description

Software-controlled Cholesterol LCD Device

A cholesterol liquid crystal device, especially a cholesterol liquid crystal device with software timing control.

At present, the known cholesteric liquid crystal display (ChLCD) has a bistable liquid crystal display characteristic. Therefore, in the known cholesteric liquid crystal display technology field, the cholesteric liquid crystal display needs to reset the information (data) displayed by each pixel between each frame. This pixel reset action requires providing sufficient cross-voltage between multiple pairs of pixel electrodes to rearrange the bi-stable liquid crystal to the original state of not displaying pixel data. Moreover, regardless of whether it is in the field of active matrix cholesteric liquid crystal display (AMChLCD) or passive matrix cholesteric liquid crystal display (PMChLCD), that is, regardless of whether each pixel of a cholesteric liquid crystal display has a thin film transistor (TFT) to perform switching logic, each pixel of a cholesteric liquid crystal display still needs to be reset.

In order to perform a reset action and display image data, a conventional cholesterol liquid crystal display needs to rely on a processor, such as a single chip system, to provide an image data to a hardware timing controller, and the hardware timing controller sets a timing according to the image data to set a power supply voltage of a power supply, and then the power supply after the voltage is set by the hardware timing controller provides the conventional cholesterol liquid crystal display voltage to perform a reset action or display an image after reset.

But the problem is that the hardware timing controller has a certain size and has certain production costs in terms of design and manufacturing costs. Such hardware size and production costs are an unavoidable cost burden for cholesterol LCD manufacturers.

Furthermore, the known power supply used with the known cholesterol LCD needs to repeatedly set the potential through the hardware timing controller when assisting the known cholesterol LCD to perform a reset or display an image after a reset. Such an operation mode of setting the potential once for each action is too time-consuming and cumbersome, thus lengthening the time for the known cholesterol LCD to switch and display each screen, and limiting the speed at which the known cholesterol LCD can update the display screen.

Please refer to FIG. 8A and FIG. 8B , where the vertical axis of FIG. 8A and FIG. 8B is voltage, the unit is volt (V), and the horizontal axis is time, the unit is millisecond (ms). When a hardware timing controller wants to reset the learned cholesterol liquid crystal display, the hardware timing controller sends a series of instructions to the learned power supply, i.e., a first instruction signal V _S1 as shown in FIG. 8A . The action of setting the modulation voltage and supply voltage of the learned power supply takes a first setting time T _S1 . After receiving the first command signal _VS1 , the known power supply will set the output potential of each power output channel in sequence according to the different time points of the pulse train in the first command signal _VS1 , and output these different potentials to the known cholesterol liquid crystal display. Then, the known cholesterol liquid crystal display, which has received the different potentials, will further modulate the different cross-voltages between the cholesterol liquid crystals through the internal components, and then generate a reset voltage _VR as shown in Figure 8B according to the potential difference. The generation of this reset voltage _VR takes an output reset voltage time _TR .

Then, after resetting the known cholesterol liquid crystal display, the hardware timing controller sends another series of instructions to the known power supply, i.e., a second instruction signal _VS2 as shown in FIG. 8A, for displaying a desired screen. The action of resetting the modulation voltage and supply voltage of the known power supply takes a second setting time _TS2 . After receiving the second instruction signal _VS2 , the known power supply re-sequences the potentials to be output by each power output channel according to different time points of the pulse train in the second instruction signal _VS2 , and outputs these different potentials to the known cholesterol liquid crystal display. Then, the conventional cholesterol liquid crystal display, which receives different potentials, further modulates the different cross-voltages between the cholesterol liquid crystals through internal components, and then generates a display voltage V _D as shown in FIG8B according to the potential difference. The generation of the output display voltage V _D takes an output display voltage time _TD .

It can be seen that whenever a new screen is to be displayed, the conventional cholesterol liquid crystal display needs to spend the sum of the first setup time _TS1 , the output reset voltage time _TR , the second setup time _TS2 and the output display voltage time _TD . Excluding the output reset voltage time _TR and the output display voltage time _TD which are indispensable in the cholesterol liquid crystal display field, the conventional cholesterol liquid crystal display still needs to spend the setup time of the first setup time _TS1 and the second setup time _TS2 , so the screen update rate of the conventional cholesterol liquid crystal display is not good.

The present invention provides a cholesterol liquid crystal device with software timing control, which softwareizes a hardware timing controller and executes it with a software timing controller of a single chip system, thereby saving the cost of designing and manufacturing the hardware timing controller and eliminating the hardware space required to set up the hardware timing controller. In addition, the present invention improves the way in which the software timing controller and a power supply module drive a cholesterol liquid crystal device, so that the cholesterol liquid crystal device can switch and display each screen more quickly, thereby saving the time for the cholesterol liquid crystal display device to switch and display each screen and increasing the speed of updating and displaying multiple screens.

The software timing controlled cholesterol liquid crystal device of the present invention comprises: a cholesterol liquid crystal panel, provided with a scanning drive element, a data drive element and a plurality of pixel electrode pairs electrically connected between the scanning drive element and the data drive element; a power supply module, provided with a first channel, a second channel, a third channel and a fourth channel; wherein the first channel, the third channel and the fourth channel are connected to each other; The second channel and the fourth channel are electrically connected to the scanning drive element of the cholesterol liquid crystal panel, and the first channel, the third channel and the fourth channel are electrically connected to the data drive element of the cholesterol liquid crystal panel; a single chip system is provided with a software timing controller, and the software timing controller is electrically connected to the power supply module and the scanning drive element and the data drive element of the cholesterol liquid crystal panel respectively. wherein the software timing controller sets and controls the power supply module to output a first voltage amplitude at the first channel, a second voltage amplitude at the second channel, a third voltage amplitude at the third channel, and a fourth voltage amplitude at the fourth channel, and the fourth voltage amplitude is greater than the third voltage amplitude, the third voltage amplitude is greater than the second voltage amplitude, and the second voltage amplitude is greater than The first voltage amplitude; wherein the software timing controller modulates a voltage setting instruction to the power supply module according to an image signal, so that the power supply module modulates a reset voltage required for resetting the pixel electrode pairs of the cholesterol liquid crystal panel according to the voltage setting instruction and the first voltage amplitude to the fourth voltage amplitude, and modulates a display voltage required for the pixel electrode pairs to display a picture.

In this way, the cholesterol liquid crystal device controlled by the software timing only needs to set the power supply module once to output the first voltage amplitude to the fourth voltage amplitude in the first channel to the fourth channel, and then every time a screen is to be updated, the software timing control can directly modulate different cross-voltages according to the first voltage amplitude to the fourth voltage amplitude to supply the cholesterol liquid crystal panel to update the pixel electrode pairs without adjusting the amplitude. In this way, when it is necessary to update multiple pixels of the cholesterol liquid crystal panel, that is, to perform the action of resetting pixels and displaying data, the cholesterol liquid crystal panel only needs to update the different cross-voltages of the pixel electrode pairs corresponding to the pixels once according to the voltage setting instruction issued by the software timing controller.

On the other hand, the conventional cholesterol liquid crystal display needs to issue instructions twice when displaying each screen. One instruction is issued to make the power supply modulate the voltage required to reset the screen, and another instruction is issued after resetting the screen to make the power supply modulate the voltage required to display data. However, the cholesterol liquid crystal device with software timing control of the present invention has already set the voltage amplitude of the power supply module once at the beginning, so it only needs to issue instructions once when displaying each screen, that is, to update the pixel electrode pairs with the voltage setting instruction to reset the screen and display data. Therefore, the present invention not only saves the cost of setting up a hardware timing controller, but also can more flexibly and efficiently control the power supply module and the cholesterol liquid crystal panel to update the pixels and display each screen with the software timing controller.

1: Single chip system

2: Power supply module

3: Cholesterol LCD panel

4: Temperature detection module

5:Signal conversion board

10: Processing device

11: Image temporary memory

12: Software timing controller

31: Scan drive components

32: Data driver components

33: Pixel area

41: First temperature communication port

51: First conversion port

52: Second switching port

53: Third switching port

54: Fourth switching port

100: Operating system

101: Digital photo frame software

102: Electronic signage software

103: Image processing program

104: Image parameter lookup table

120: Power control port

121: Scan control port

122: Data control port

123: Temperature communication port

200: Power communication port

201: First power port

202: Second power port

203: Third power port

204: Fourth power port

310: Scan communication port

311, 312, 313: Scan power port

320: Data port

321, 322, 323: Data and power ports

P ₁ : First pulse

P ₂ : Second pulse

P ₈ : Eighth pulse

V ₁ : Voltage setting command

V _D : Display voltage

V _DI : Display cross voltage

_VR : Reset voltage

V _RE : Reset voltage

_VS1 : First command signal

_VS2 : Second command signal

S1~S7: Steps

T ₁ : First setting time

T _D : Output display voltage time

T _DI : Screen display time

T _R : Output reset voltage time

T _RE : Reset time

T _S1 : First setting time

T _S2 : Second time setting

Figure 1 is a schematic diagram of a new type of cholesterol liquid crystal device with software timing control.

Figure 2A is a schematic diagram of the signal of the voltage setting command sent by the software timing controller of the new type of cholesterol liquid crystal device controlled by software timing.

Figure 2B is a schematic diagram of the cross-voltage signal received by the cholesterol liquid crystal of the new software timing-controlled cholesterol liquid crystal device.

FIG2C is a schematic diagram of a fourth low-level signal modulated by the power supply module of the new software timing-controlled cholesterol liquid crystal device.

Figure 2D is a schematic diagram of a third low-level signal modulated by the power supply module of the new software timing-controlled cholesterol liquid crystal device.

Figure 2E is a schematic diagram of a second low-level signal modulated by the power supply module of the new software-controlled cholesterol liquid crystal device.

Figure 2F is a schematic diagram of a first low-level signal modulated by the power supply module of the new software timing-controlled cholesterol liquid crystal device.

Figure 2G is a schematic diagram of a signal of a fourth high potential modulated by the power supply module of the new software timing controlled cholesterol liquid crystal device.

Figure 2H is a schematic diagram of a third high potential signal modulated by the power supply module of the new software timing controlled cholesterol liquid crystal device.

Figure 2I is a schematic diagram of a second high potential signal modulated by the power supply module of the new software timing controlled cholesterol liquid crystal device.

Figure 2J is a schematic diagram of a first high-level signal modulated by the power supply module of the new software-controlled cholesterol liquid crystal device.

Figure 2K is a signal diagram of the modulation voltage of the data drive element in the cholesterol liquid crystal panel of the new type of software timing controlled cholesterol liquid crystal device.

Figure 2L is a signal diagram of the modulation voltage of the scanning drive element in the cholesterol liquid crystal panel of the new type of software timing controlled cholesterol liquid crystal device.

Figure 3 is another schematic diagram of the new type of cholesterol liquid crystal device with software timing control.

FIG4 is a schematic diagram of the signal generation of a single-chip system in an embodiment of the new type of software timing-controlled cholesterol liquid crystal device.

FIG5 is a schematic diagram of the signal generation of the single-chip system of the new software timing-controlled cholesterol liquid crystal device in another embodiment.

Figure 6 is a flow chart of updating the screen of the new software timing controlled cholesterol liquid crystal device in an embodiment.

FIG7 is another flow chart of updating the screen of the new software timing controlled cholesterol liquid crystal device in the embodiment.

Figure 8A is a schematic diagram of a signal from a hardware timing controller sending a command to a learned power supply.

FIG8B is a signal diagram of a known cholesterol liquid crystal display receiving voltage.

Please refer to FIG. 1 , the present invention provides a cholesterol liquid crystal device with software timing control. The cholesterol liquid crystal device with software timing control includes a single chip system 1, a power supply module 2 and a cholesterol liquid crystal panel 3.

The cholesterol liquid crystal panel 3 is provided with a scanning drive element 31, a data drive element 32 and a pixel area 33. The pixel area 33 is provided with a plurality of pixels, and each of the pixels corresponds to a plurality of pixel electrode pairs. Each of the pixel electrode pairs is electrically connected between the scanning drive element 31 and the data drive element 32. The cholesterol liquid crystal panel 3 of the present invention can be an active matrix or a passive matrix cholesterol liquid crystal.

Preferably, the scanning drive element 31 has a scanning communication port 310 and a plurality of scanning power ports 311, 312, 313. Furthermore, the data drive element 32 has a data communication port 320 and a plurality of data power ports 321, 322, 323.

The power supply module 2 is provided with a power communication port 200, a first power port 201 electrically connected to a first channel, a second power port 202 electrically connected to a second channel, a third power port 203 electrically connected to a third channel, and a fourth power port 204 electrically connected to a fourth channel. The first channel, the second channel, and the fourth channel of the power supply module 2 are electrically connected to the scanning drive element 31 of the cholesterol liquid crystal panel 3, and the first channel, the third channel, and the fourth channel are electrically connected to the data drive element 32 of the cholesterol liquid crystal panel 3.

In detail, the first power port 201 electrically connected to the first channel is further electrically connected to the scan power port 311 and the data power port 321. The second power port 202 electrically connected to the second channel is further electrically connected to the scan power port 312. The third power port 203 electrically connected to the third channel is further electrically connected to the data power port 322. The fourth power port 204 electrically connected to the fourth channel is further electrically connected to the scan power port 313 and the data power port 323.

The single chip system 1 is provided with a processing device 10, an image temporary storage memory 11 and a software timing controller 12. The processing device 10 is electrically connected to the image temporary storage memory 11, and the image temporary storage memory 11 is electrically connected to the software timing controller 12. The software timing controller 12 has a power control port 120, a scan control port 121 and a data control port 122, and the power control port 120 is electrically connected to the power communication port 200 of the power supply module 2, the scan control port 121 is electrically connected to the scan communication port 310 of the cholesterol liquid crystal panel 3, and the data control port 122 is electrically connected to the data communication port 320 of the cholesterol liquid crystal panel 3.

Through the communication between the power control port 120 and the power communication port 200, the software timing controller 12 of the single chip system 1 sets and controls the power supply module 2 to output a first voltage amplitude through the first power port 201 in the first channel, a second voltage amplitude through the second power port 202 in the second channel, a third voltage amplitude through the third power port 203 in the third channel, and a fourth voltage amplitude through the fourth power port 204 in the fourth channel. The fourth voltage amplitude is greater than the third voltage amplitude, the third voltage amplitude is greater than the second voltage amplitude, and the second voltage amplitude is greater than the first voltage amplitude.

Furthermore, the software timing controller 12 modulates a voltage setting instruction and a data format instruction according to an image signal. The software timing controller 12 sends the data format instruction to the scanning drive element 31 and the data drive element 32 of the cholesterol liquid crystal panel 3 through the scanning control port 121 and the data control port 122, respectively, so that the cholesterol liquid crystal panel 3 sets the data format corresponding to a display screen according to the data format instruction. The software timing controller 12 sends the voltage setting instruction to the power communication port 200 of the power supply module 2 through the power control port 120, so that the power supply module 2 first modulates a reset voltage required for resetting the pixel electrode pairs of the cholesterol liquid crystal panel 3 according to the voltage setting instruction and the first voltage amplitude to the fourth voltage amplitude, and then directly modulates a display voltage required for the pixel electrode pairs to display a picture. The modulation basis of the reset voltage and the display voltage is based on the aforementioned first voltage amplitude to the fourth voltage amplitude as the absolute value of the voltage, and the modulated voltage is provided to each pixel electrode pair of the cholesterol liquid crystal panel 3 in a timely manner to generate the voltage required to update the screen.

The software timing controller 12 of the present invention is executed by the single-chip system 1, so it does not need to be set up as a hardware timing controller as in the prior art. In other words, because the processing performance of the single-chip system 1 is generally excessive, the present invention is to use the existing hardware of the single-chip system 1, such as an existing processing chip, to softwareize a part of the performance of the processing chip for use by the software timing controller 12 of the present invention. In this way, the present invention saves the cost of designing and manufacturing the hardware timing controller separately and saves the hardware space required to set up the hardware timing controller.

Furthermore, because the software timing controller 12 of the present invention is software-designed by the single-chip system 1, the software timing controller 12 can be used more flexibly and efficiently. Thus, the present invention improves the way in which the software timing controller 12 and the power supply module 2 drive the cholesterol liquid crystal panel 3, so that the cholesterol liquid crystal panel 3 can switch and display each screen more quickly, thereby saving the time for the cholesterol liquid crystal panel 3 to switch and display each screen and increasing the speed of updating and displaying multiple screens.

Please refer to FIG. 2A and FIG. 2B , where the vertical axis of FIG. 2A and FIG. 2B is voltage, the unit is volt (V), and the horizontal axis is time, the unit is millisecond (ms). When the software timing controller 12 wants to reset the screen displayed by the cholesterol liquid crystal panel 3 and wants to display a new screen, the software timing controller 12 modulates a voltage setting instruction V ₁ as shown in FIG. 2A , and sends the voltage setting instruction V ₁ to the power communication port 200 of the power supply module 2 to inform the power supply module 2 of the voltage to be modulated at one time. The voltage setting command _V1 is a pulse train. According to the timing of each pulse in the pulse train, the voltage required to be output from the first power port 201 to the fourth power port 204 of the power supply module 2 is modulated. The time for setting the modulated voltage of the power supply module 2 takes a first setting time _T1 .

Next, the scanning drive element 31 and the data drive element 32 of the cholesterol liquid crystal panel 3 receive various voltage amplitudes outputted by the power supply module 2 to first generate a reset voltage V _RE and then generate a display voltage V _DI . The time required for the cholesterol liquid crystal panel 3 to receive the voltage outputted by the power supply module 2 to generate the reset voltage V _RE is a reset time T _RE , and the time required for the cholesterol liquid crystal panel 3 to receive the voltage outputted by the power supply module 2 to generate the display voltage V _DI is a screen display time T _DI .

It can be seen that whenever the screen is reset and a new screen is displayed, the present invention only needs to consume the sum of the first setting time T ₁ , the reset voltage V _RE and the screen display time T _DI . Compared with the time consumed by the prior art shown in FIG. 8A and FIG. 8B , the present invention updates and displays each screen more quickly. The power supply module 2 of the present invention only needs to modulate the voltage once according to the voltage setting instruction issued by the software timing controller 12, without having to wait twice for the learned hardware timing controller to control the learned power supply to modulate the voltage. In this way, the present invention uses the software timing controller 12 to more flexibly and efficiently control the power supply module and the cholesterol liquid crystal panel to update the cross-voltage of the pixel electrode pairs to display each picture.

Regarding the modulation of the reset voltage and the display voltage, the software timing controller 12 of the present invention only needs to control the modulation and output voltage amplitudes of the power supply module 2 once. For details, please refer to the following table 1:

Preferably, the first power port 201 to the fourth power port 204 of the power supply module 2 can output high potential or low potential through two different sub-channels. The first high potential and the first low potential have the same amplitude, that is, the first voltage amplitude. The second high potential and the second low potential have the same amplitude, that is, the second voltage amplitude, and so on. Preferably, the high potential is a positive voltage, and the low potential is a negative voltage. For example, the first high potential is a positive voltage, the first low potential is a negative voltage, the second high potential is also a positive voltage, and the second low potential is also a negative voltage, and so on.

表二 For example, in an embodiment of the present invention, each pixel electrode pair of the cholesterol liquid crystal panel 3 is used to display a monochrome pixel, so the cholesterol liquid crystal panel 3 can only display a monochrome picture. In this embodiment, the first high potential is +6 volts (V), and the first low potential is -6V. The second high potential is +11V, and the second low potential is -11V. The third high potential is +16V, and the third low potential is -16V. The fourth high potential is +25V, and the fourth low potential is -25V. Based on this, please refer to Table 2 for further information:

Table 2

The liquid crystal cross-voltage listed in Table 2 above is the voltage received by the scanning driver 31 minus the voltage received by the data driver 32. The so-called same color display black level voltage refers to the voltage required to update the display of the same color (black), and the so-called same color display white level voltage refers to the voltage required to update the display of the same color (white).

When the power supply module 2 modulates the voltage in the positive cycle according to the voltage setting instruction to reset the pixel electrode pairs, the scanning driver 31 adopts the fourth high potential provided by the power supply module 2, and the data driver 32 adopts the fourth low potential provided by the power supply module 2, so that each pixel electrode pair between the data driver 32 and the scanning driver 31 has a positive cycle reset voltage. According to Table 2 above, the positive cycle reset voltage is 25V-(-25V)=50V.

When the power supply module 2 modulates the voltage in the negative polarity cycle according to the voltage setting instruction to reset the pixel electrode pairs, the scan driver 31 uses the fourth low potential provided by the power supply module 2, and the data driver 32 uses the fourth high potential provided by the power supply module 2, so that each pixel electrode pair between the data driver 32 and the scan driver 31 has a negative cycle reset voltage. According to Table 2 above, the negative cycle reset voltage is -25V-(+25V)=-50V.

When the power supply module 2 modulates the voltage in the positive polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display the black level, the scanning driver element 31 adopts the first high potential provided by the power supply module 2, and the data driver element 32 adopts the third low potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the black level displayed between the data driver element 32 and the scanning driver element 31 has a positive cycle black level voltage. According to Table 2 above, the positive cycle black level voltage is +6V-(-16V)=22V.

When the power supply module 2 modulates the voltage in the negative polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display the black level, the scanning driver element 31 adopts the first low potential provided by the power supply module 2, and the data driver element 32 adopts the third high potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the black level displayed between the data driver element 32 and the scanning driver element 31 has a negative cycle black level voltage. According to Table 2 above, the negative cycle black level voltage is -6V-(+16V)=-22V.

When the power supply module 2 modulates the voltage in the positive cycle according to the voltage setting instruction to update the pixel electrode pairs to display the white level, the scanning driver element 31 adopts the first high potential provided by the power supply module 2, and the data driver element 32 adopts the first low potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the white level displayed between the data driver element 32 and the scanning driver element 31 has a positive cycle white level voltage. According to Table 2 above, the positive cycle white level voltage is +6V-(-6V)=12V.

When the power supply module 2 modulates the voltage in the negative polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display the white level, the scanning driver element 31 adopts the first low potential provided by the power supply module 2, and the data driver element 32 adopts the first high potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the white level displayed between the data driver element 32 and the scanning driver element 31 has a negative cycle white level voltage. According to Table 2 above, the negative cycle white level voltage is -6V-(+6V)=-12V.

When the power supply module 2 modulates the voltage in the positive polarity cycle according to the voltage setting instruction to control the pixel electrodes to maintain the black level when updating, the scanning driver 31 adopts the second low potential provided by the power supply module 2, and the data driver 32 adopts the third low potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the black level maintained between the data driver 32 and the scanning driver 31 has a positive cycle black level maintenance voltage. According to Table 2 above, the positive cycle black level maintenance voltage is -11V-(-16V)=5V.

When the power supply module 2 modulates the voltage in the negative polarity cycle according to the voltage setting instruction to control the pixel electrodes to maintain the black level when updating, the scanning driver 31 adopts the second high potential provided by the power supply module 2, and the data driver 32 adopts the third high potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the black level maintained between the data driver 32 and the scanning driver 31 has a negative cycle black level maintenance voltage. According to Table 2 above, the negative cycle black level maintenance voltage is +11V-(+16V)=-5V.

When the power supply module 2 modulates the voltage in the positive polarity cycle according to the voltage setting instruction to control the pixel electrodes to maintain the display white level when updating, the scanning driver 31 adopts the second low potential provided by the power supply module 2, and the data driver 32 adopts the first low potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the data driver 32 and the scanning driver 31 that maintains the display white level has a positive cycle white level maintenance voltage. According to Table 2 above, the positive cycle white level maintenance voltage is -11V-(-6V)=-5V.

When the power supply module 2 modulates the voltage in the negative polarity cycle according to the voltage setting instruction to control the pixel electrodes to maintain the display white level when updating, the scanning driver 31 adopts the second high potential provided by the power supply module 2, and the data driver 32 adopts the first high potential provided by the power supply module 2, so that each pixel electrode pair corresponding to the display white level between the data driver 32 and the scanning driver 31 has a negative cycle white level maintenance voltage. According to Table 2 above, the negative cycle white level maintenance voltage is +11V-(+6V)=5V.

As mentioned above, in this embodiment, each power port has two voltage output sub-channels, so the first power port 201 to the fourth power port 204 of the power supply module 2 have a total of 8 voltage output sub-channels. The voltage setting instruction _V1 in FIG2A includes a total of 8 pulses, such as a first pulse _P1 that is first in the timing, a second pulse _P2 that is second in the timing, and an eighth pulse _P8 that is last in the timing. According to the timing of each pulse of the voltage setting instruction _V1 , the voltage setting instruction _V1 in FIG2A uses a pulse to set the potential output by a voltage output sub-channel.

Please refer to FIG. 2C to FIG. 2J , wherein: FIG. 2C shows that one of the sub-channels of the fourth power port 204 is modulated by setting the voltage from 0V to the fourth low level of -25V according to the first pulse _P1 in the voltage setting instruction _V1 .

FIG2D shows that one of the sub-channels of the third power port 203 is modulated by setting the voltage from 0V to the third low level of -16V according to the second pulse _P2 in the voltage setting instruction _V1 .

FIG2E shows that one of the sub-channels of the second power port 202 is set from 0V to the second low voltage of -11V according to the third pulse modulation voltage in the voltage setting instruction _V1 .

FIG. 2F shows that one of the sub-channels of the first power port 201 is set from 0V to the first low level of -6V according to the fourth pulse modulation voltage in the voltage setting instruction _V1 .

FIG2G shows that another sub-channel of the fourth power port 204 is set from 0V to the fourth high potential of +25V according to the fifth pulse modulation voltage in the voltage setting instruction _V1 .

FIG2H shows that another sub-channel of the third power port 203 is set from 0V to the third high potential of +16V according to the sixth pulse modulation voltage in the voltage setting instruction _V1 .

FIG. 2I shows that another sub-channel of the second power port 202 is set from 0V to the second high potential of +11V according to the seventh pulse modulation voltage in the voltage setting instruction _V1 .

FIG2J shows that another sub-channel of the first power port 201 modulates the voltage from 0V to the first high level of +6V according to the eighth pulse _P8 in the voltage setting instruction _V1 .

As shown in FIG. 2C to FIG. 2J , the power supply module 2 takes the first setting time _T1 to output the 8 potentials set for the 8 voltage output sub-channels.

Please refer to FIG. 2K, FIG. 2L and FIG. 2B, which show the eight potentials output by the power supply module 2. FIG. 2K shows the voltage modulated by the data driver 32, and FIG. 2L shows the voltage modulated by the scan driver 31. The voltage modulated by the scan driver 31 minus the voltage modulated by the data driver 32 equals the voltage difference shown in FIG. 2B. The voltage difference shown in FIG. 2B includes the aforementioned reset voltage V _RE and the display voltage V _DI , and the calculation method of this voltage difference has been explained in the paragraph explaining Table 2, so it will not be repeated here.

In another embodiment, the pixel electrode pairs of the cholesterol liquid crystal panel 3 are used to display a plurality of blue pixels and a plurality of red pixels, that is, the cholesterol liquid crystal panel 3 is a liquid crystal panel for blue-red dual-color display.

Thus, the first voltage amplitude set for the power supply module 2 includes a blue first high voltage and a blue first low voltage, the second voltage amplitude includes a blue second high voltage and a blue second low voltage, the third voltage amplitude includes a blue third high voltage and a blue third low voltage, and the fourth voltage amplitude includes a blue fourth high voltage and a blue fourth low voltage.

In addition to the aforementioned four channels, the power supply module 2 also has a first red channel, a second red channel, a third red channel and a fourth red channel, and each channel has a corresponding port for output to the cholesterol liquid crystal panel 3. The first red channel, the second red channel and the fourth red channel are electrically connected to the scanning drive element 31 of the cholesterol liquid crystal panel 3, and the first red channel, the third red channel and the fourth red channel are electrically connected to the data drive element 32 of the cholesterol liquid crystal panel 3.

The software timing controller 12 sets and controls the power supply module 2 to output a red first high voltage and a red first low voltage in the red first channel, a red second high voltage and a red second low voltage in the red second channel, a red third high voltage and a red third low voltage in the red third channel, and a red fourth high voltage and a red fourth low voltage in the red fourth channel. In addition, the software timing controller 12 controls the power supply module 2 to modulate the voltage with the voltage setting instruction so that the cholesterol liquid crystal panel 3 resets the blue pixels according to the blue fourth high voltage and the blue fourth low voltage, and resets the red pixels according to the red fourth high voltage and the red fourth low voltage. In the technical field of cholesterol liquid crystal display, the power supply module 2 modulates the voltage to make the cholesterol liquid crystal panel 3 reset the screen and the method of displaying the blue-red screen interlaced with blue pixels and red pixels are similar to the power supply module 2 modulates the voltage to make the cholesterol liquid crystal panel 3 reset the monochrome screen and the method of displaying the monochrome screen, so it will not be elaborated here.

In another embodiment, the pixel electrode pairs of the cholesterol liquid crystal panel 3 are used to display a plurality of blue pixels, a plurality of green pixels and a plurality of red pixels, that is, the cholesterol liquid crystal panel 3 is a color display liquid crystal panel.

Thus, the power supply module further has a green first channel, a green second channel, a green third channel and a green fourth channel. The green first channel, the green second channel and the green fourth channel are respectively electrically connected to the scanning drive element 31 of the cholesterol liquid crystal panel 3, and the green first channel, the green third channel and the green fourth channel are respectively electrically connected to the data drive element 32 of the cholesterol liquid crystal panel 3.

The software timing controller 12 sets and controls the power supply module 2 to output a green first high voltage and a green first low voltage in the green first channel, a green second high voltage and a green second low voltage in the green second channel, a green third high voltage and a green third low voltage in the green third channel, and a green fourth high voltage and a green fourth low voltage in the green fourth channel. Furthermore, the software timing controller 12 controls the power supply module 2 to modulate the voltage with the voltage setting instruction so that the cholesterol liquid crystal panel 3 resets the blue pixels according to the blue fourth high voltage and the blue fourth low voltage, resets the red pixels according to the red fourth high voltage and the red fourth low voltage, and resets the green pixels according to the green fourth high voltage and the green fourth low voltage. In the technical field of cholesterol liquid crystal display, the power supply module 2 modulates the voltage to make the cholesterol liquid crystal panel 3 reset the screen and the method of displaying the RGB color screen interwoven by blue pixels, red pixels and green pixels are similar to the power supply module 2 modulates the voltage to make the cholesterol liquid crystal panel 3 reset the monochrome screen and the method of displaying the monochrome screen, so it will not be elaborated here.

As shown in FIG. 1 , in one embodiment, the scan control port 121 and the data control port 122 of the software timing controller 12 are electrically connected to the scan communication port 310 of the scan driver element 31 and the data communication port 320 of the data driver element 32 of the cholesterol liquid crystal panel 3 through a low voltage transistor logic interface (LVTTL) to transmit the data format command from the software timing controller 12 to the scan driver element 31 and the data driver element 32 of the cholesterol liquid crystal panel 3.

Furthermore, the software timing controller 12 communicates with the power supply module 2 in an Inter-Integrated Circuit (I ² C) manner to configure and control the power supply module 2 .

Please refer to Figure 3. In one embodiment, the novel device further includes a temperature detection module 4 and a signal conversion board 5.

Since cholesterol liquid crystal is a temperature sensitive material, the software timing controller 12 has a temperature communication port 123, and the temperature communication port 123 is electrically connected to a first temperature communication port 41 of the temperature detection module 4. The temperature detection module 4 is connected to the cholesterol liquid crystal panel 3, for example, it is disposed on a circuit board inside the cholesterol liquid crystal panel 3. The temperature detection module 4 detects a temperature of the cholesterol liquid crystal panel 3 and generates a temperature signal, and the temperature detection module 4 sends the temperature signal to the software timing controller 12. The software timing controller 12 adjusts the amplitude of the first voltage amplitude, the second voltage amplitude, the third voltage amplitude and the fourth voltage amplitude to be output by the power supply module 2 according to the temperature signal. In this way, when the software timing controller 12 controls the power supply module 2 to modulate the voltage to be supplied to the cholesterol liquid crystal panel 3, the value of the voltage will also be adjusted according to the temperature signal.

In addition, the signal conversion board 5 has a first conversion port 51, a second conversion port 52, a third conversion port 53 and a fourth conversion port 54. The first conversion port 51 is electrically connected to the scan control port 121 of the software timing controller 12, the second conversion port 52 is electrically connected to the data control port 122 of the software timing controller 12, the third conversion port 53 is electrically connected to the scan communication port 310 of the cholesterol liquid crystal panel 3, and the fourth conversion port 54 is electrically connected to the data communication port 320 of the data drive element 32.

The software timing controller 12 first outputs LVTTL signals to the first conversion port 51 and the second conversion port 52 of the signal conversion board 5 through the scan control port 121 and the data control port 122, and then the signal conversion board 5 converts the LVTTL signals into a low voltage differential signal (Mini Low-Voltage Differential Signaling; Mini-LVDS), and outputs the Mini-LVDS to the scan communication port 310 and the data communication port 320 of the cholesterol liquid crystal panel 3 through the third conversion port 53 and the fourth conversion port 54. Thus, the scan control port 121 of the software timing controller 12 is indirectly electrically connected to the scan communication port 310 of the cholesterol liquid crystal panel 3 through the signal conversion board 5, and the data control port 122 of the software timing controller 12 is indirectly electrically connected to the data communication port 320 of the cholesterol liquid crystal panel 3 through the signal conversion board 5.

In one embodiment, the signal conversion board 5 is a field programmable gate array (FPGA) signal conversion board, which converts the LVTTL signal into the low voltage differential signal through the FPGA to output to the cholesterol liquid crystal panel 3.

In another embodiment, the signal conversion board 5 is a complex programmable logic device (CPLD) signal conversion board, which converts the LVTTL signal into the low voltage differential signal through the CPLD to output to the cholesterol liquid crystal panel 3.

Please refer to FIG. 4 . In one embodiment, the processing device 10 in the single chip system 1 executes an operating system 100, and the operating system 100 stores a plurality of image software, an image processing program 103, and a plurality of image parameter lookup tables 104. The image software may include, for example, a digital photo frame software 101 and an electronic sign software 102, and the operating system 100 is a Linux/Android operating system.

The image processing program 103 in the operating system 100 receives an image from the image software, such as a photo frame image from the digital photo frame software 101 or an electronic sign image from the electronic sign software 102. The photo frame image and the electronic sign image are images of different forms, and different forms of images correspond to different types of one of the image parameter lookup tables 104.

The image processing program 103 can generate an image data according to one of the image parameter lookup tables 104 corresponding to the form of the image, and output the image data to the image temporary storage 11, and then the image temporary storage 11 outputs the image signal corresponding to the image data to the software timing controller 12. The software timing controller 12 then determines the voltage setting instruction to be sent to the power supply module 2 and the data format instruction to be sent to the cholesterol liquid crystal panel 3 according to the image signal.

Please refer to FIG. 5 , in another embodiment, the operating system 100 only stores the image software, such as a digital photo frame software 101 and an electronic sign software 102. The image processing program 103 and the image parameter lookup tables 104 are stored in the software timing controller 12. Thus, the image temporary memory 11 receives the image from the image software, and then the image temporary memory 11 outputs the image signal corresponding to the image to the image processing program 103 stored in the software timing controller 12. The image signal from the digital photo frame software 101 and the image signal from the electronic signage software 102 have different image formats, and different image formats correspond to different types of one of the image parameter lookup tables 104.

The image processing program 103 of the software timing controller 12 modulates the voltage setting instruction and the data format instruction according to the image format of the image signal and one of the image parameter lookup tables 104 corresponding to the image format.

Please refer to Figures 6 and 7. Preferably, in order to update each screen displayed by the cholesterol liquid crystal panel 3 with the best quality, the present invention implements the following steps in one embodiment:

Step S1: An image software of the operating system 100, such as the aforementioned digital photo frame software 101 or the electronic signage software 102, in the processing device 10 of the single-chip system 1 issues a screen update command. The screen update command is defined by the image software to update a display direction and a display mode of the screen.

Step S2: The operating system 100 suspends all operations of the image software, and the operating system 100 hands over the control of updating the screen to the software timing controller 12 in the single-chip system 1.

Step S3: The software timing controller 12 obtains the temperature data of the cholesterol liquid crystal panel 3 from the temperature detection module 4 through an integrated circuit (I ² C) after obtaining the master control right, that is, obtains a panel temperature according to the temperature signal obtained from the temperature detection module 4 .

Step S4: According to the panel temperature, the software timing controller 12 reads a voltage-to-temperature setting table to look up the table to set the voltage level that the power supply module 2 needs to modulate, reads a display timing-to-temperature setting table to look up the table to set the timing required to update the screen, and reads a drive waveform-to-temperature setting table to look up the table to set the drive waveform required to update the screen.

Step S5: The software timing controller 12 transmits a voltage setting instruction to the power supply module 2 via an integrated circuit (I ² C).

Step S6: The software timing controller 12 transmits display data to the scan driver 31 and the data driver 32 of the cholesterol liquid crystal panel 3 via a low voltage transistor logic interface (LVTTL) to reset the screen and display the screen when updating the screen. The content of this step corresponds to the aforementioned technical content of the software timing controller 12 transmitting the data format instruction to the scan driver 31 and the data driver 32 of the cholesterol liquid crystal panel 3, so that the cholesterol liquid crystal panel 3 sets the data format corresponding to the display screen according to the data format instruction, and further resets the screen and displays the data of the new screen.

Step S7: When the screen display is completed, the software timing controller 12 returns the master control to the operating system 100, and reports the display completion status information to the image software in the operating system 100. In this way, the image software can plan the schedule for updating the display of the next screen.

1: Single chip system

2: Power supply module

3: Cholesterol LCD panel

10: Processing device

11: Image temporary memory

12: Software timing controller

31: Scan drive components

32: Data driver components

33: Pixel area

120: Power control port

121: Scan control port

122: Data control port

200: Power communication port

201: First power port

202: Second power port

203: Third power port

204: Fourth power port

310: Scan communication port

311, 312, 313: Scan power port

320: Data port

321, 322, 323: Data and power ports

Claims (14)

A cholesterol liquid crystal device with software timing control includes: a cholesterol liquid crystal panel, provided with a scanning drive element, a data drive element and a plurality of pixel electrode pairs electrically connected between the scanning drive element and the data drive element; a power supply module, provided with a first channel, a second channel, a third channel and a fourth channel; wherein the first channel, the second channel and the fourth channel are electrically connected to the scanning drive element of the cholesterol liquid crystal panel, and the first channel, the third channel and the fourth channel are electrically connected to the data drive element of the cholesterol liquid crystal panel; A single chip system is provided with a software timing controller, and the software timing controller is electrically connected to the power supply module and the scanning drive element and the data drive element of the cholesterol liquid crystal panel respectively; Wherein, the software timing controller sets and controls the power supply module to output a first voltage amplitude in the first channel, a second voltage amplitude in the second channel, a third voltage amplitude in the third channel, and a fourth voltage amplitude in the fourth channel, and the fourth voltage amplitude is greater than the third voltage amplitude, the third voltage amplitude is greater than the second voltage amplitude, and the second voltage amplitude is greater than the first voltage amplitude; The software timing controller modulates a voltage setting instruction to the power supply module according to an image signal, so that the power supply module modulates a reset voltage required for resetting the pixel electrode pairs of the cholesterol liquid crystal panel according to the voltage setting instruction and the first voltage amplitude to the fourth voltage amplitude, and modulates a display voltage required for the pixel electrode pairs to display a picture. A software timing controlled cholesterol liquid crystal device as described in claim 1, wherein the fourth voltage amplitude output by the fourth channel includes a fourth high potential and a fourth low potential; wherein, when the power supply module modulates the voltage in a positive polarity cycle to reset the pixel electrode pairs according to the voltage setting instruction, the power supply module provides the fourth high potential to the scanning driver element and provides the fourth low potential to the data driver element, so that there is a positive cycle reset voltage between the data driver element and the scanning driver element; When the power supply module modulates the voltage in a negative polarity cycle to reset the pixel electrode pairs according to the voltage setting instruction, the power supply module provides the fourth low potential to the scan driver and the fourth high potential to the data driver, so that there is a negative cycle reset voltage between the data driver and the scan driver. A software timing controlled cholesterol liquid crystal device as described in claim 1, wherein each pixel electrode pair of the cholesterol liquid crystal panel is used to display a monochrome pixel; wherein the first voltage amplitude output by the first channel includes a first high potential and a first low potential, and the third voltage amplitude output by the third channel includes a third high potential and a third low potential; When the power supply module modulates the voltage in a positive polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display black levels, the power supply module provides the first high potential to the scanning driver element and provides the third low potential to the data driver element, so that there is a positive cycle black level voltage between the data driver element and the scanning driver element; Wherein, when the power supply module modulates the voltage in the positive polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display the white level, the power supply module provides the first high potential to the scanning driver element and provides the first low potential to the data driver element, so that there is a positive cycle white level voltage across the data driver element to the scanning driver element; When the power supply module modulates the voltage in a negative polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display black levels, the power supply module provides the first low potential to the scanning driver element and provides the third high potential to the data driver element, so that there is a negative cycle black level cross-voltage between the data driver element and the scanning driver element; When the power supply module modulates the voltage in the negative polarity cycle according to the voltage setting instruction to update the pixel electrode pairs to display white levels, the power supply module provides the first low potential to the scanning driver element and provides the first high potential to the data driver element, so that there is a negative cycle white level voltage between the data driver element and the scanning driver element. A software timing controlled cholesterol liquid crystal device as described in claim 3, wherein the second voltage amplitude output by the second channel includes a second high potential and a second low potential; wherein, when the power supply module modulates the voltage in the positive polarity cycle according to the voltage setting instruction to control the pixel electrode pairs to maintain the display black level, the power supply module provides the second low potential to the scanning driver element and provides the third low potential to the data driver element, so that there is a positive cycle black level maintenance cross-voltage between the data driver element and the scanning driver element; Wherein, when the power supply module modulates the voltage in the positive polarity cycle according to the voltage setting instruction to control the pixel electrode pairs to maintain the display white level, the power supply module provides the second low potential to the scanning drive element and provides the first low potential to the data drive element, so that there is a positive cycle white level maintenance cross-voltage between the data drive element and the scanning drive element; Wherein, when the power supply module modulates the voltage in the negative polarity cycle according to the voltage setting instruction to control the pixel electrode pairs to maintain the display black level, the power supply module provides the second high potential to the scanning drive element and provides the third high potential to the data drive element, so that there is a negative cycle black level maintenance cross-voltage between the data drive element and the scanning drive element; When the power supply module modulates the voltage in the negative polarity cycle according to the voltage setting instruction to control the pixel electrode pairs to maintain the display white level, the power supply module provides the second high potential to the scanning driver element and provides the first high potential to the data driver element, so that there is a negative cycle white level maintenance cross-voltage between the data driver element and the scanning driver element. A software timing controlled cholesterol liquid crystal device as described in claim 1, wherein the pixel electrode pairs of the cholesterol liquid crystal panel are used to display a plurality of blue pixels and a plurality of red pixels; wherein the first voltage amplitude includes a blue first high potential and a blue first low potential, the second voltage amplitude includes a blue second high potential and a blue second low potential, the third voltage amplitude includes a blue third high potential and a blue third low potential, and the fourth voltage amplitude includes a blue fourth high potential and a blue fourth low potential; Wherein, the power supply module further has a red first channel, a red second channel, a red third channel and a red fourth channel; wherein, the red first channel, the red second channel and the red fourth channel are electrically connected to the scanning drive element of the cholesterol liquid crystal panel, and the red first channel, the red third channel and the red fourth channel are electrically connected to the data drive element of the cholesterol liquid crystal panel; Wherein, the software timing controller sets and controls the power supply module to output a red first high voltage and a red first low voltage in the red first channel, a red second high voltage and a red second low voltage in the red second channel, a red third high voltage and a red third low voltage in the red third channel, and a red fourth high voltage and a red fourth low voltage in the red fourth channel; The software timing controller uses the voltage setting instruction to control the power supply module to modulate the cross-voltage required for the cholesterol liquid crystal panel to reset the blue pixels according to the blue fourth high voltage and the blue fourth low voltage, and reset the red pixels according to the red fourth high voltage and the red fourth low voltage. A software timing controlled cholesterol liquid crystal device as described in claim 1, wherein the pixel electrode pairs of the cholesterol liquid crystal panel are used to display a plurality of blue pixels, a plurality of green pixels and a plurality of red pixels; wherein the first voltage amplitude includes a blue first high potential and a blue first low potential, the second voltage amplitude includes a blue second high potential and a blue second low potential, the third voltage amplitude includes a blue third high potential and a blue third low potential, and the fourth voltage amplitude includes a blue fourth high potential and a blue fourth low potential; The power supply module further has a red first channel, a red second channel, a red third channel, a red fourth channel, a green first channel, a green second channel, a green third channel and a green fourth channel; wherein the red first channel, the red second channel, the red fourth channel, the green first channel, the green second channel and the green fourth channel are respectively electrically connected to the scanning drive element of the cholesterol liquid crystal panel, and the red first channel, the red third channel, the red fourth channel, the green first channel, the green third channel and the green fourth channel are respectively electrically connected to the data drive element of the cholesterol liquid crystal panel; Wherein, the software timing controller also sets and controls the power supply module to output a red first high voltage and a red first low voltage on the red first channel, a red second high voltage and a red second low voltage on the red second channel, a red third high voltage and a red third low voltage on the red third channel, a red fourth high voltage and a red fourth low voltage on the red fourth channel, a green first high voltage and a green first low voltage on the green first channel, a green second high voltage and a green second low voltage on the green second channel, a green third high voltage and a green third low voltage on the green third channel, and a green fourth high voltage and a green fourth low voltage on the green fourth channel; The software timing controller uses the voltage setting instruction to control the power supply module to modulate the cross-voltage required for the cholesterol liquid crystal panel to reset the blue pixels according to the blue fourth high voltage and the blue fourth low voltage, reset the red pixels according to the red fourth high voltage and the red fourth low voltage, and reset the green pixels according to the green fourth high voltage and the green fourth low voltage. The cholesterol liquid crystal device with software timing control as described in claim 1 further comprises: a temperature detection module connected to the cholesterol liquid crystal panel and electrically connected to the software timing controller; wherein the temperature detection module detects a temperature of the cholesterol liquid crystal panel to generate a temperature signal, and sends the temperature signal to the software timing controller; wherein the software timing controller adjusts the amplitude of the first voltage amplitude, the second voltage amplitude, the third voltage amplitude and the fourth voltage amplitude to be output by the power supply module according to the temperature signal. A cholesterol liquid crystal device controlled by software timing as described in claim 1, wherein the single chip system further has an operating system and an image temporary storage memory, and the operating system has an image software, an image processing program and a plurality of image parameter lookup tables; wherein the image processing program receives an image from the image software, and generates an image data to the image temporary storage memory according to the image parameter lookup tables corresponding to a form of the image, and then the image temporary storage memory outputs the image signal corresponding to the image data to the software timing controller. A cholesterol liquid crystal device with software timing control as described in claim 1, wherein the single chip system further has an operating system and an image temporary storage memory, and the operating system has an image software; wherein the software timing controller has an image processing program and a plurality of image parameter lookup tables; wherein the image temporary storage memory receives an image from the image software, and then the image temporary storage memory outputs the image signal corresponding to the image to the image processing program of the software timing controller; wherein the image processing program of the software timing controller modulates the voltage setting instruction according to an image form of the image signal and according to the image parameter lookup tables corresponding to the image form. A cholesterol liquid crystal device with software timing control as described in claim 8 or 9, wherein the operating system is a Linux/Android operating system, and the imaging software is a digital photo frame software or an electronic signage software. A cholesterol liquid crystal device with software timing control as described in any one of claims 1 to 9, wherein the software timing controller communicates with the power supply module in the form of an integrated circuit (Inter-Integrated Circuit; I²C) to set and control the power supply module. A cholesterol liquid crystal device with software timing control as described in any one of claims 1 to 9, wherein the software timing controller is electrically connected to the scanning drive element and the data drive element of the cholesterol liquid crystal panel through a low voltage transistor logic interface (Low Voltage Transistor-Transistor Logic; LVTTL). A cholesterol liquid crystal device with software timing control as described in any one of claims 1 to 9, wherein the software timing controller is first electrically connected to a signal conversion board through a low voltage transistor logic interface (Low Voltage Transistor-Transistor Logic; LVTTL), and then indirectly electrically connects the scanning drive element and the data drive element of the cholesterol liquid crystal panel through the signal conversion board to output a low voltage differential signal (Mini Low-Voltage Differential Signaling; Mini-LVDS). The cholesterol liquid crystal device controlled by software as described in claim 1, comprises: A temperature detection module connected to the cholesterol liquid crystal panel and electrically connected to the software timing controller; wherein the temperature detection module detects a temperature of the cholesterol liquid crystal panel to generate a temperature signal, and sends the temperature signal to the software timing controller; wherein the single chip system also has an operating system, and the operating system has an image software; wherein the cholesterol liquid crystal device controlled by software executes the following steps to update each screen displayed by the cholesterol liquid crystal panel: The image software of the operating system issues a screen update command; wherein the screen update command is defined by the image software as a display direction and a display mode of the updated screen; The operating system suspends all operations of the image software, and the operating system hands over the control of the updated screen to the software timing controller in the single-chip system; After obtaining the control, the software timing controller obtains the temperature signal from the temperature detection module through an integrated bus circuit (Inter-Integrated Circuit; I²C) to obtain a panel temperature; According to the panel temperature, the software timing controller reads a voltage-to-temperature setting table to look up the table to set the voltage level that the power supply module needs to modulate, reads a display timing-to-temperature setting table to look up the table to set the timing required to update the screen, and reads a drive waveform-to-temperature setting table to look up the table to set the drive waveform required to update the screen; The software timing controller transmits the voltage setting command to the power supply module via I²C; The software timing controller transmits the voltage setting command to the power supply module via a low voltage transistor logic interface (Low Voltage Transistor-Transistor Logic; LVTTL) transmits display data to the scan driver and the data driver of the cholesterol liquid crystal panel to reset the screen and display the screen when updating the screen; When the screen display is completed, the software timing controller returns the master right to the operating system and reports the display completion status information to the imaging software in the operating system.

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