Multi-stable display with handwriting functionality

Abstract

The present application is a multi-stable display with handwriting function, comprising a timing control circuit unit, a driving circuit unit and a display panel unit. When the driving circuit unit receives a digital-analog conversion signal, the driving circuit unit generates a pixel electrode driving signal output to the display panel unit according to handwriting pixel electrode header data and handwriting pixel electrode waveform data, and generates a line electrode driving signal output to the display panel unit according to handwriting line electrode header data and handwriting line electrode waveform data. Since the driving circuit unit confirms the voltage value of the pixel electrode driving signal input to the display panel unit according to the handwriting pixel electrode waveform data with less bits and the handwriting pixel electrode header data, it is not necessary to transmit 3-bit voltage data, thereby reducing the data transmission amount in handwriting mode, reducing the transmission time of data, thereby improving the data transmission efficiency.

Description

Technical Field

[0001] This invention relates to a display, and more particularly to a multistable display with handwriting functionality. Background Technology

[0002] Existing multistable displays, such as cholesterol liquid crystal displays (ChLCDs), exhibit bistable liquid crystal display characteristics. Therefore, these multistable displays require various voltage configurations to drive them when displaying images. For example, such a multistable display has a display panel unit, where each pixel is composed of several pixel electrodes and several line electrodes, and a liquid crystal layer is disposed between the line electrodes and the pixel electrodes. When driving the display panel unit, voltages are applied to the line electrodes and pixel electrodes, creating a specific voltage across the corresponding pixel position, causing the liquid crystal in the liquid crystal layer to rotate to a specific angle.

[0003] Furthermore, the multistable display will have a timing controller (TCON) and a driver IC. The timing controller generates a timing control signal to the driver IC, and the driver IC outputs a driving voltage to the line electrodes and pixel electrodes according to the timing control signal, thereby driving the multistable display to display a specific image.

[0004] Generally, the timing control circuit unit (TCON) has a clock output terminal (clock; clk), a display output enable control terminal (display output enable; doe), a display output ground control terminal (display output ground; dog), a digital-to-analog conversion control terminal (digital to analog; d2a), a display start signal control terminal (display start pulse; dsp), several data output terminals (data 0 to n), and several scan output terminals (scan 0 to m). The clock output terminal (clk), the display output enable control terminal (doe), the display output ground control terminal (dog), the digital-to-analog conversion control terminal (d2a), the display start signal control terminal (dsp), the several data output terminals (data 0 to n), and the several scan output terminals (scan 0 to m) of the timing control circuit unit (TCON) are connected to the driver circuit unit (Driver IC) to output the timing control signal.

[0005] However, this multi-stable display requires multiple voltage configurations to drive it. Therefore, in the timing control signal, the data used to control the voltage configuration of each pixel needs to be transmitted through multiple bits, and multiple voltage configurations cannot be expressed with a single bit. For example, currently, the data used to control the voltage configuration is transmitted through 3 bits. That is, every time the voltage configuration of a pixel is changed, 3 bits of data need to be transmitted.

[0006] Please see Figure 7A and Figure 7B As shown, for example, the timing control circuit unit has three data output terminals (data 0-2) and three scan output terminals (scan 0-2). Taking a 4×4 multistable display as an example, the three data output terminals (data 0-2) output a data signal 11a to the driving circuit unit, and the data signal 11a contains four sets of pixel electrode data (pixel 1-4), which the driving circuit unit uses to generate corresponding pixel electrode driving signals to the four pixel electrodes of the display panel unit. The three scan output terminals (scan 0-2) output a scan signal 12a to the driving circuit unit, and the scan signal 12a contains four sets of line electrode data (line 1-4), which the driving circuit unit uses to generate corresponding line electrode driving signals to the four line electrodes of the display panel unit.

[0007] In handwriting mode, the timing control circuit transmits 3 bits of data for each pixel electrode. For example, a first pixel electrode data (pixel 1) has 3 bits from pixel 1(0) to pixel 1(2). Figure 7A As shown, because this timing control circuit unit has three data output terminals, it can only output one set of pixel electrode data at a time. Therefore, four sets of pixel electrode data (pixels 1-4) need to be transmitted in four separate steps. Similarly, as... Figure 7B As shown, the four sets of line electrode data (line 1 to line 4) also need to be transmitted in four separate steps.

[0008] Therefore, when the timing control circuit unit outputs the pixel electrode data and the line electrode data to the driving circuit unit, it needs to be transmitted in multiple steps, which is quite time-consuming and results in low data transmission efficiency. Summary of the Invention

[0009] In view of the drawbacks of existing multistable displays that are quite time-consuming to transmit data, resulting in low data transmission efficiency, the present invention provides a multistable display with handwriting function to reduce the amount of data transmitted in handwriting mode, thereby improving data transmission efficiency.

[0010] The multistable display with handwriting function includes a timing control circuit unit (TCON), a driver circuit unit (Driver IC), and a display panel unit.

[0011] The timing control signal includes a digital-to-analog conversion signal, a data signal, and a scan signal. The data signal sequentially includes handwritten pixel electrode header data and handwritten pixel electrode waveform data, while the scan signal sequentially includes handwritten line electrode header data and handwritten line electrode waveform data.

[0012] When the driving circuit unit receives the digital-to-analog conversion signal, the driving circuit unit generates a pixel electrode driving signal output to the display panel unit based on the handwritten pixel electrode header data and the handwritten pixel electrode waveform data, and the driving circuit unit generates a line electrode driving signal output to the display panel unit based on the handwritten line electrode header data and the handwritten line electrode waveform data.

[0013] When the driving circuit unit receives the digital-to-analog conversion signal, it generates a pixel electrode driving signal output to the display panel unit based on the handwritten pixel electrode header data and the handwritten pixel electrode waveform data. Therefore, the driving circuit unit can determine the voltage value of the pixel electrode driving signal input to the display panel unit based on a smaller number of bits of the handwritten pixel electrode waveform data in conjunction with the handwritten pixel electrode header data, without directly transmitting 3 bits of voltage data. Similarly, the driving circuit unit generates a line electrode driving signal output to the display panel unit based on the handwritten line electrode header data and the handwritten line electrode waveform data. Therefore, the driving circuit unit can also determine the voltage value of the line electrode driving signal input to the display panel unit based on a smaller number of bits of the handwritten line electrode waveform data in conjunction with the handwritten line electrode header data, without directly transmitting 3 bits of voltage data. Since the multistable display with handwriting function of the present invention only needs to use fewer bits to complete the data transmission, the amount of data transmission in handwriting mode can be reduced, thereby reducing the data transmission time and improving the data transmission efficiency. Attached Figure Description

[0014] Figure 1 This is a block diagram of the multistable display with handwriting function according to the present invention.

[0015] Figure 2This is a schematic diagram of the panel structure of the multistable display with handwriting function according to the present invention.

[0016] Figure 3A This is a waveform diagram of the header setting signal for the multistable display with handwriting function of the present invention.

[0017] Figure 3B This is a schematic diagram of the data signal of the multistable display with handwriting function according to the present invention.

[0018] Figure 3C This is a schematic diagram of the scanning signal of the multistable display with handwriting function according to the present invention.

[0019] Figure 4A This is a schematic diagram of the data signal of the multistable display with handwriting function according to the present invention.

[0020] Figure 4B This is a schematic diagram of the scanning signal of the multistable display with handwriting function according to the present invention.

[0021] Figure 5 This is a schematic diagram of the display state of the multistable display with handwriting function of the present invention.

[0022] Figure 6A This is a waveform diagram of the header setting signal for the multistable display with handwriting function of the present invention.

[0023] Figure 6B This is a schematic diagram of the digital-to-analog conversion signal of the multistable display with handwriting function according to the present invention.

[0024] Figure 6C This is a schematic diagram of the data signal of the multistable display with handwriting function according to the present invention.

[0025] Figure 6D This is a waveform diagram of the pixel electrode driving signal of the multistable display with handwriting function of the present invention.

[0026] Figure 6E This is a schematic diagram of the scanning signal of the multistable display with handwriting function according to the present invention.

[0027] Figure 6F This is a waveform diagram of the line electrode drive signal of the multistable display with handwriting function of the present invention.

[0028] Figure 7A This is a schematic diagram of the data signal of an existing multistable display.

[0029] Figure 7B This is a schematic diagram of the scanning signal of an existing multistable display. Detailed Implementation

[0030] Please see Figure 1 As shown, the multistable display of the present invention includes a timing control circuit unit 10, a driving circuit unit 20, and a display panel unit 30.

[0031] The timing control circuit unit 10 generates a timing control signal. The drive circuit unit 20 is connected to the timing control circuit unit 10 and receives the timing control signal. The display panel unit 30 is connected to the drive circuit unit 20.

[0032] In this embodiment, the timing control circuit unit 10 includes a clock output terminal (clock; clk), a display output enable control terminal (display output enable; doe), a display output ground control terminal (display output ground; dog), and a display start signal control terminal (display start pulse; dsp). The functions of the clock output terminal (clk), the display output enable control terminal (doe), the display output ground control terminal (dog), and the display start signal control terminal (dsp) of the timing control circuit unit 10 are the same as those of the timing control circuit units of existing multi-stable displays, and will not be described in detail here. In addition, the timing control circuit unit 10 also includes several data output terminals, such as the first to the (n+1)th data output terminals (data 0 to data n), and several scan output terminals, such as the first to the (m+1)th scan output terminals (scan 0 to scan m).

[0033] Please see Figure 2 As shown, the display panel unit 30 has a plurality of pixel electrodes 31 and a plurality of line electrodes 32. Each intersection of the pixel electrode 31 and each line electrode 32 forms a pixel.

[0034] Please see Figures 3A to 3C As shown, the timing control signal includes a digital-to-analog conversion signal, a data signal 11, and a scan signal 12. The data signal sequentially includes handwritten pixel electrode header data 111 and handwritten pixel electrode waveform data 112, while the scan signal 12 sequentially includes handwritten line electrode header data 121 and handwritten line electrode waveform data 122. In this embodiment, the timing control circuit unit includes a digital-to-analog conversion control terminal (d2a), which is connected to the drive circuit unit 20 and outputs the digital-to-analog conversion signal to the drive circuit unit 20.

[0035] When the driving circuit unit 20 receives the digital-to-analog conversion signal, the driving circuit unit 20 generates a pixel electrode driving signal output to the display panel unit 30 based on the handwritten pixel electrode header data 111 and the handwritten pixel electrode waveform data 112, and the driving circuit unit 20 generates a line electrode driving signal output to the display panel unit 30 based on the handwritten line electrode header data 121 and the handwritten line electrode waveform data 122.

[0036] When the driving circuit unit 20 receives the digital-to-analog conversion signal, it generates a pixel electrode driving signal output to the display panel unit 30 using the handwritten pixel electrode header data 111 and the handwritten pixel electrode waveform data 112. Therefore, the driving circuit unit 20 can determine the voltage value of the pixel electrode driving signal input to the display panel unit 30 based on a smaller number of bits of the handwritten pixel electrode waveform data 112, in conjunction with the handwritten pixel electrode header data 111, without needing to directly transmit 3 bits of voltage data. Similarly, the driving circuit unit 20 generates a line electrode driving signal output to the display panel unit 30 based on the handwritten line electrode header data 121 and the handwritten line electrode waveform data 122. Therefore, the driving circuit unit 20 can also determine the voltage value of the line electrode driving signal input to the display panel unit 30 based on the handwriting line electrode waveform data 122 (which has fewer bits) and the handwriting line electrode header data 121, without directly transmitting 3 bits of voltage data. Since the multistable display with handwriting functionality of the present invention only needs to use fewer bits to complete data transmission, the amount of data transmitted in handwriting mode can be reduced, thereby reducing data transmission time and improving data transmission efficiency.

[0037] In this embodiment, the handwritten pixel electrode waveform data 112 of the data signal 11 is 1 bit of data, and the handwritten line electrode waveform data 122 of the scan signal 12 is 1 bit of data.

[0038] Furthermore, the timing control circuit unit 10 also includes a header setting control terminal (dsh), which is connected to the drive circuit unit 20 to output a header setting signal 101 to the drive circuit unit 20. The data output terminals (data0 to data n) are connected to the drive circuit unit 20 to output data signals 11. When the data output terminals (data0 to data n) output data signal 11 as the handwritten pixel electrode header data 111, the header setting signal 101 output by the header setting control terminal (dsh) is at a high voltage level. When the data output terminals (data0 to data n) output data signal 11 that is not the handwritten pixel electrode header data 111, the header setting signal 101 output by the header setting control terminal (dsh) is at a low voltage level.

[0039] Similarly, the plurality of scan output terminals (scan 0 to scan m) are connected to the drive circuit unit 20 to output the scan signal 12 to the drive circuit unit 20. When the scan output terminal (scan 0 to scan m) outputs the scan signal 12 as the handwriting line electrode header data 121, the header setting control terminal (dsh) outputs the header setting signal 101 as the high voltage level. When the scan output terminal (scan 0 to scan m) outputs the scan signal 12 as not being the handwriting line electrode header data 121, the header setting control terminal (dsh) outputs the header setting signal 101 as the low voltage level.

[0040] Preferably, the plurality of data output terminals (data 0 to data n) and the plurality of scan output terminals (scan 0 to scan m) synchronously output the handwritten pixel electrode header data 111 and the handwritten circuit electrode header data 121.

[0041] Furthermore, the data signal 11 also includes pixel electrode blank data 113, which follows the handwritten pixel electrode waveform data 112. The scan signal 12 also includes line electrode blank data 123, which follows the handwritten line electrode waveform data 122.

[0042] For example, please refer to Figure 4A and Figure 4B As shown, the timing control circuit unit 10 has three data output terminals (data 0~2) and three scan output terminals (scan 0~2). Figure 5As shown, taking a 4×4 multistable display as an example, the three data output terminals (data 0-2) output four sets of pixel electrode data (pixel 1-4) to the driving circuit unit 20, so that the driving circuit unit 20 can generate corresponding pixel electrode driving signals to the four pixel electrodes of the display panel unit 30 based on the four sets of pixel electrode data (pixel 1-4). The three scan output terminals (scan 0-2) output four sets of line electrode data (line 1-4) to the driving circuit unit 20, so that the driving circuit unit 20 can generate corresponding line electrode driving signals to the four line electrodes of the display panel unit 30 based on the four sets of line electrode data (line 1-4).

[0043] Furthermore, the handwritten pixel electrode header data 111 of the data signal 11 includes a first pixel electrode voltage data 1111 and a second pixel electrode voltage data 1112. For example, the bit data of the first pixel electrode voltage data 1111 output by the data output terminals (data 0~2) is V2(0), V2(1), and V2(2). And the bit data of the second pixel electrode voltage data 1112 output by the data output terminals (data0~2) is V5(0), V5(1), and V5(2).

[0044] Furthermore, the handwritten line electrode header data 121 of the scan signal 12 includes a first line electrode voltage data 1211 and a second line electrode voltage data 1212. For example, the bit data of the first line electrode voltage data 1211 output by the scan output terminals (scan 0~2) is V5(0), V5(1), and V5(2). And the bit data of the second line electrode voltage data 1212 output by the scan output terminals (scan 0~2) is V2(0), V2(1), and V2(2).

[0045] Furthermore, the handwriting pixel electrode waveform data 112 of the data signal 11 is 1 bit of data, and the handwriting line electrode waveform data 122 of the scan signal 12 is 1 bit of data. Since in a handwriting mode, handwriting input represents the generation of a trajectory, and the trajectory is represented by a single color, for example... Figure 5As shown, when a user performs handwriting input at the bottom left position, the display panel unit 30 needs to update the pixel corresponding to that position to a colored state, while the other positions remain colorless. For example, the pixel at the bottom left position is the intersection of the first pixel electrode 31 (pixel 1) and the first line electrode 32 (line 1). Therefore, the number of bits corresponding to the first pixel electrode 31 (pixel 1) in the handwriting pixel electrode waveform data 112 and the number of bits corresponding to the first line electrode 32 (line 1) in the handwriting line electrode waveform data 122 are set to a first digital value, such as the number 1, and the rest are set to a second digital value, such as the number 0. For example, as Figure 4A As shown, pixel 1(0) is set to 1, and as... Figure 4B As shown, line 1(0) is set to 1, which means that the pixel at the intersection of pixel 1(0) and line 1(0) has handwritten input and needs to be updated to a colored state. The other pixels 2-4(0) and lines 2-4(0) are all set to 0, which means that no update is needed and they are in a colorless state.

[0046] Please refer to further information. Figures 6A to 6F As shown, Figure 6D As shown, the pixel electrode driving signal 201 has a first pixel electrode half-cycle 201a and a second pixel electrode half-cycle 201b.

[0047] like Figure 6B and Figure 6D As shown, when the driving circuit unit 20 receives the first digital-to-analog conversion signal 102, the driving circuit unit 20 outputs the pixel electrode driving signal 201 as the first pixel electrode half-cycle 201a. And when the driving circuit unit 20 receives the second digital-to-analog conversion signal 102, the driving circuit unit 20 outputs the pixel electrode driving signal 201 as the second pixel electrode half-cycle 201b.

[0048] Furthermore, please refer to Figure 6C and Figure 6DAs shown, the handwritten pixel electrode header data 111 of the data signal 11 includes the first pixel electrode voltage data 1111 and the second pixel electrode voltage data 1112. When the handwritten pixel electrode waveform data 112 of the data signal 11 is the first digital value, and when the pixel electrode driving signal 201 output by the driving circuit unit 20 is the first pixel electrode half-cycle 201a, the driving circuit unit 20 generates the pixel electrode driving signal 201 according to the first pixel electrode voltage data 1111 of the handwritten pixel electrode header data 111. In this embodiment, when the pixel electrode driving signal 201 output by the driving circuit unit 20 is the first pixel electrode half-cycle 201a, the voltage value of the pixel electrode driving signal 201 generated by the driving circuit unit 20 is the second voltage V2 in the first pixel electrode voltage data 1111.

[0049] When the handwritten pixel electrode waveform data 112 of the data signal 11 is the first digital value, and when the pixel electrode driving signal 201 output by the driving circuit unit 20 is the second pixel electrode half-cycle 201b, the driving circuit unit 20 generates the pixel electrode driving signal 201 according to the second pixel electrode voltage data 1112 of the handwritten pixel electrode header data 111. In this embodiment, when the pixel electrode driving signal 201 output by the driving circuit unit 20 is the second pixel electrode half-cycle 201b, the voltage value of the pixel electrode driving signal 201 generated by the driving circuit unit 20 is the fifth voltage V5 in the second pixel electrode voltage data 1112.

[0050] Furthermore, such as Figure 6F As shown, the line electrode drive signal 202 has a first line electrode half-cycle 202a and a second line electrode half-cycle 202b.

[0051] like Figure 6B and Figure 6F As shown, when the driving circuit unit 20 receives the first digital-to-analog conversion signal 102, the driving circuit unit 20 outputs the line electrode driving signal 202 as the first line electrode half-cycle 202a. When the driving circuit unit 20 receives the second digital-to-analog conversion signal 102, the driving circuit unit 20 outputs the line electrode driving signal 202 as the second line electrode half-cycle 202b.

[0052] Furthermore, please refer to Figure 6E and Figure 6FAs shown, the handwritten line electrode header data 121 of the scan signal 12 includes the first line electrode voltage data 1211 and the second line electrode voltage data 1212. When the handwritten line electrode waveform data 122 of the scan signal 12 is the first digital value, and when the line electrode drive signal 202 output by the drive circuit unit 20 is the first line electrode half-cycle 202a, the drive circuit unit 20 generates the line electrode drive signal 202 according to the first line electrode voltage data 1211 of the handwritten line electrode header data 121. In this embodiment, when the line electrode drive signal 202 output by the drive circuit unit 20 is the first line electrode half-cycle 202a, the voltage value of the line electrode drive signal 202 generated by the drive circuit unit 20 is the fifth voltage V5 in the first line electrode voltage data 1211.

[0053] When the handwritten line electrode waveform data 122 of the scan signal 12 is the first digital value, and when the line electrode drive signal 202 output by the drive circuit unit 20 is the second line electrode half-cycle 202b, the drive circuit unit 20 generates the line electrode drive signal 202 according to the second line electrode voltage data 1212 of the handwritten line electrode header data 121. In this embodiment, when the line electrode drive signal 202 output by the drive circuit unit 20 is the second line electrode half-cycle 202b, the voltage value of the line electrode drive signal 202 generated by the drive circuit unit 20 is the second voltage V2 in the second line electrode voltage data 1212.

[0054] Furthermore, in this embodiment, such as Figure 6B and Figure 6C or Figure 6E As shown, the driving circuit unit 20 outputs the digital-to-analog conversion signal 102 to the driving circuit unit 20 during the period when the data signal 11 is the pixel electrode blank data 113. Alternatively, the driving circuit unit 20 outputs the digital-to-analog conversion signal 102 to the driving circuit unit 20 during the period when the data signal 11 is the line electrode blank data 123.

[0055] Furthermore, in the multistable display device with a local update mode of the present invention, the counting signal of the digital-to-analog conversion signal 102 output by the digital-to-analog conversion control terminal (d2a) is used to allow the driving circuit unit 20 to determine whether the pixel electrode driving signal 201 is the first pixel electrode half-cycle 201a or the second pixel electrode half-cycle 201b. Therefore, the plurality of data output terminals only need to complete the transmission of waveform data before the rising edge of the first counting signal. That is, after the waveform data is output, the plurality of data output terminals do not need to output the waveform data again. In this way, during the period of the counting signal 102 output by the digital-to-analog conversion control terminal (d2a), these data output terminals do not need to output the waveform data. For example, such as Figure 6B and Figure 6C As shown, when the digital-to-analog conversion control terminal (d2a) outputs the counting signal 102, the plurality of data output terminals output the pixel electrode blank data 113. The pixel electrode blank data 113 indicates that the plurality of data output terminals have no output data. Therefore, during the counting period when the digital-to-analog conversion control terminal (d2a) outputs the counting signal 102, the plurality of data output terminals do not need to transmit waveform data.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A multistable display with handwriting function, characterized in that, Includes: A timing control circuit unit generates a timing control signal; A driving circuit unit is connected to the timing control circuit unit and receives the timing control signal; A display panel unit is connected to the driving circuit unit; The timing control signal includes a digital-to-analog conversion signal, a data signal and a scan signal, and the data signal sequentially includes a handwritten pixel electrode header data and a handwritten pixel electrode waveform data, while the scan signal sequentially includes a handwritten line electrode header data and a handwritten line electrode waveform data. When the driving circuit unit receives the digital-to-analog conversion signal, the driving circuit unit generates a pixel electrode driving signal output to the display panel unit based on the handwritten pixel electrode header data and the handwritten pixel electrode waveform data, and the driving circuit unit generates a line electrode driving signal output to the display panel unit based on the handwritten line electrode header data and the handwritten line electrode waveform data.

2. The multistable display with handwriting function as described in claim 1, characterized in that, The handwritten pixel electrode waveform data of the data signal is 1 bit of data, and the handwritten line electrode waveform data of the scan signal is 1 bit of data.

3. The multistable display with handwriting function as described in claim 2, characterized in that, The pixel electrode driving signal has a first pixel electrode half-cycle and a second pixel electrode half-cycle. When the driving circuit unit receives the first digital-to-analog conversion signal, the driving circuit unit outputs the pixel electrode driving signal as the first pixel electrode half-cycle. When the driving circuit unit receives the second digital-to-analog conversion signal, the driving circuit unit outputs the pixel electrode driving signal as the second pixel electrode half-cycle.

4. The multistable display with handwriting function as described in claim 3, characterized in that, The handwritten pixel electrode header data of the data signal includes a first pixel electrode voltage data and a second pixel electrode voltage data; Wherein, when the handwritten pixel electrode waveform data of the data signal is a first digital value, and when the pixel electrode driving signal output by the driving circuit unit is the first pixel electrode half cycle, the driving circuit unit generates the pixel electrode driving signal according to the first pixel electrode voltage data of the handwritten pixel electrode header data. Specifically, when the handwritten pixel electrode waveform data of the data signal is the first digital value, and when the pixel electrode driving signal output by the driving circuit unit is the second pixel electrode half-cycle, the driving circuit unit generates the pixel electrode driving signal based on the second pixel electrode voltage data of the handwritten pixel electrode header data.

5. The multistable display with handwriting function as described in claim 2, characterized in that, The line electrode drive signal has a first line electrode half-cycle and a second line electrode half-cycle. When the driving circuit unit receives the first digital-to-analog conversion signal, the driving circuit unit outputs the line electrode driving signal as the first line electrode half-cycle. When the driving circuit unit receives the second digital-to-analog conversion signal, the driving circuit unit outputs the line electrode driving signal as the second line electrode half-cycle.

6. The multistable display with handwriting function as described in claim 5, characterized in that, The handwritten line electrode header data of the scan signal includes a first line electrode voltage data and a second line electrode voltage data; Wherein, when the handwritten line electrode waveform data of the scanning signal is a first digital value, and when the line electrode driving signal output by the driving circuit unit is half a cycle of the first line electrode, the driving circuit unit generates the line electrode driving signal according to the first line electrode voltage data of the handwritten line electrode header data. Specifically, when the handwritten line electrode waveform data of the scanning signal is the first digital value, and when the line electrode driving signal output by the driving circuit unit is the second line electrode half-cycle, the driving circuit unit generates the line electrode driving signal based on the second line electrode voltage data of the handwritten line electrode header data.

7. The multistable display with handwriting function as described in claim 1, characterized in that, This timing control circuit unit includes: A header setting control terminal is connected to the drive circuit unit, and outputs a header setting signal to the drive circuit unit. Several data output terminals are connected to the drive circuit unit, and the data signal is output to the drive circuit unit. Specifically, when the data output terminal outputs the data signal as the handwritten pixel electrode header data, the header setting signal output by the header setting control terminal is a high voltage level.

8. The multistable display with handwriting function as described in claim 1, characterized in that, This timing control circuit unit includes: A digital-to-analog conversion control terminal is connected to the drive circuit unit and outputs the digital-to-analog conversion signal to the drive circuit unit.

9. The multistable display with handwriting function as described in claim 1, characterized in that, The data signal also includes one pixel electrode blank data, and the pixel electrode blank data is followed by the handwritten pixel electrode waveform data; The scanning signal also includes blank data for a line electrode in sequence, and the blank data for the line electrode follows the handwritten line electrode waveform data.

10. The multistable display with handwriting function as described in claim 9, characterized in that, The driving circuit unit outputs the digital-to-analog conversion signal to the driving circuit unit during the period when the data signal is blank data for the pixel electrode.

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