TWI408641B - Electronic paper display and driving method thereof - Google Patents

Abstract

An electronic paper display and a driving method thereof are disclosed. The driving method comprises following steps. A first pixel is driven according a first reset voltage. The first pixel is driven according a second reset voltage. The first pixel is synchronously driven according a second reset voltage when a second pixel is driven according a first reset voltage.

Description

Electronic paper display and driving method thereof

The present invention relates to an electronic paper display and a method of driving the same, and more particularly to a non-full-size activated electronic paper display and a method of driving the same.

In the technology of electronic paper, the size of a microsphere or cube represents the size of a display pixel, wherein the microsphere or cube is characterized by being driven by an external voltage to change state. The electronic paper display pixel is characterized by a bistable (bistable), and its display state is also changed by the external driving voltage. However, because the electronic paper reaction rate is slow, it takes a long time to replace a picture, so it is less suitable for applications that continuously update the picture.

E-paper generally refers to a device that looks as thin as paper. A reflective display with bistable characteristics consumes power only when the image is updated. Among the developed electronic paper display materials, soft electrophoretic display materials are most favored. Electrophoresis means physical movement under the action of electric field force, but it has not been able to solve the uniform distribution of electrophoresis and steady state reflection speed for many years. The problem is too slow, and because the electro-optic response curve lacks a critical value, if there is no active component, a high-resolution dot matrix cannot be produced.

The electro-phoretic display (EPD) driving method uses the pulse width modulation method to adjust the driving time to determine the gray scale of the display. The velocity of particle motion is proportional to the strength of the electric field, and the viscosity coefficient of the medium is inversely proportional to the particle radius. Although the basic principle of electrophoresis is easy to understand, the mechanism and model of the detail are still to be studied. If the driving method is improper, It may cause the dye particles to be fixed at a certain position of the medium and cannot move. Also, the use of an electrophoretic material to display grayscale images is not as easy as liquid crystal. EPD gray-scale driving method must consider time, number of times, voltage, timing and other issues, especially the mechanism of conversion driving between color gradation and color gradation, temperature compensation mechanism, etc., in order to achieve better image contrast and color gradation display stability. Many improved EPD drive waveforms have been proposed. A typical method is to add several black and white flash cycles. The idea is to reset them to all black or white and activate the particles to make the final gray scale appear better. Stable, reducing the phenomenon of gradation degradation after the drive is completed.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 simultaneously. FIG. 1 is a schematic diagram showing an electronic paper display, and FIG. 2 is a partial equivalent circuit diagram of a conventional electronic paper display. FIG. It is a partial drive timing diagram of a conventional electronic paper display. The electronic paper display 10 includes a display system upper module 120, a common voltage terminal 130, a micro control wafer or single wafer 140, a drive wafer 150, a power control wafer 160, a drive wafer 170, and a display system lower layer module 180. The power control chip 160 is connected to the display system upper module 120 via the common voltage terminal 130, and supplies the power required for the micro control wafer or the single wafer 140, the driving wafer 150, and the driving wafer 170. The micro-control wafer or single wafer 140 controls the drive wafer 150 and the drive wafer 170 to drive the display system lower module 180.

Further, the display system lower layer module 180 includes a data line 182, a scan line 184, and a pixel 186. The driving wafer 150 sequentially outputs the scan driving signals Row1 to Row4 and transmits them to the pixels 186 via the scanning lines 184. The drive wafer 170 correspondingly outputs the material drive signals Source1 to Source4 and passes through the data line 182 to the pixels 186. All of the pixels 186 of the lower layer module 180 of the display system are first fully activated to a full black screen, and then fully expanded to an all white screen. Finally, all the pixels 186 of the lower layer module 180 of the system are displayed to display the corresponding pixel data.

However, the conventional electronic paper can easily cause image sticking without using the full-size activation method, and affect the display quality of the electronic paper display. Therefore, how to provide an electronic paper display that suppresses image sticking has become an important issue in the industry.

The present invention relates to an electronic paper display and a driving method thereof, which eliminates the need for full-width movement of state changes, reduces the time for activation of particles, and shortens the time for full-width update.

According to an aspect of the invention, a method of driving an electronic paper display is provided. The driving method of the electronic paper display includes at least the following steps: First, the first pixel is driven according to the first reset voltage. Then, the first pixel is driven according to the second reset voltage. Then, when the first pixel is driven according to the data voltage, the second pixel is reset in synchronization according to the first reset voltage.

According to another aspect of the invention, an electronic paper display is presented. The electronic paper display includes at least a data line, a first reset voltage line, a second reset voltage line, a scan line, a first pixel, and a second pixel. The data line is used to transmit the data voltage. The first reset voltage line is for transmitting a first reset voltage, and the second reset voltage line is for transmitting a second reset voltage. The first pixel includes a first energy storage unit and a first switching unit, and the first switching unit is controlled by the scan line to sequentially electrically connect the first energy storage unit to the first reset voltage line and the second reset voltage line. And information lines. The second pixel includes a second energy storage unit and a second switching unit, and the second switching unit is controlled by the scan lines to synchronously connect the second energy storage unit when the first energy storage unit is electrically connected to the data line. The first reset voltage line is electrically connected.

According to still another aspect of the present invention, an electronic paper display is provided. The electronic paper display includes at least a first reset voltage line, a second reset voltage line, a pixel array, and a driving circuit. The first reset voltage line is for transmitting a first reset voltage, and the second reset voltage line is for transmitting a second reset voltage. The pixel array includes a first pixel, a second pixel, and a third pixel. The first pixel, the second pixel, and the third pixel are adjacent to each other and located in the same column, and the second pixel is located between the first pixel and the third pixel. The driving circuit first drives the first pixel according to the first reset voltage and the second reset voltage, and then drives the first pixel according to the data voltage, and synchronously according to the first reset voltage when driving the first pixel according to the data voltage Drive the second pixel.

In order to make the above-mentioned contents of the present invention more comprehensible, a preferred embodiment will be described below, and in conjunction with the drawings, a detailed description is as follows:

In order to improve the image sticking phenomenon of the conventional electronic paper display, the following embodiments disclose an electronic paper display that suppresses image sticking and a driving method thereof. The driving method of the electronic paper display includes at least the following steps: First, the first pixel is driven according to the first reset voltage. Then, the first pixel is driven according to the second reset voltage. Then, when the first pixel is driven according to the data voltage, the second pixel is reset in synchronization according to the first reset voltage.

The electronic paper display includes at least a data line, a first reset voltage line, a second reset voltage line, a scan line, a first pixel, and a second pixel. The data line is used to transmit the data voltage. The first reset voltage line is for transmitting a first reset voltage, and the second reset voltage line is for transmitting a second reset voltage. The first pixel includes a first energy storage unit and a first switching unit, and the first switching unit is controlled by the scan line to sequentially electrically connect the first energy storage unit to the first reset voltage line and the second reset voltage line. And information lines. The second pixel includes a second energy storage unit and a second switching unit, and the second switching unit is controlled by the scan lines to synchronously connect the second energy storage unit when the first energy storage unit is electrically connected to the data line. The first reset voltage line is electrically connected.

Alternatively, the electronic paper display includes at least a first reset voltage line, a second reset voltage line, a pixel array, and a driving circuit. The first reset voltage line is for transmitting a first reset voltage, and the second reset voltage line is for transmitting a second reset voltage. The pixel array includes a first pixel, a second pixel, and a third pixel. The first pixel, the second pixel, and the third pixel are adjacent to each other and located in the same column, and the second pixel is located between the first pixel and the third pixel. The driving circuit first drives the first pixel according to the first reset voltage and the second reset voltage, and then drives the first pixel according to the data voltage, and synchronously according to the first reset voltage when driving the first pixel according to the data voltage Drive the second pixel.

First embodiment

Please refer to FIG. 4 and FIG. 5 simultaneously. FIG. 4 is a partial equivalent circuit diagram of the electronic paper display according to the first embodiment of the present invention, and FIG. 5 is a first embodiment of the present invention. Part of the signal timing diagram of the electronic paper display. The electronic paper display 20 includes a data line 210, a reset voltage line 240, a reset voltage line 250, a scan line 220, a pixel 230a, a pixel 230b, a pixel 230c, and a pixel 230d. For convenience of explanation, FIG. 4 illustrates a 4×2 pixel array as an example.

The data line 210 is used to transmit the data driving signals Source1 to Source5. For convenience of explanation, FIG. 4 only shows Source1 and Source2. The reset voltage line 240 is used to pass the reset voltage +VDD, and the reset voltage +VDD is to drive the pixel to display a white white voltage or to make the electronic paper steady state voltage. The reset voltage line 250 is used to pass the reset voltage -VDD, and the reset voltage -VDD is to drive the pixel to display a black black voltage or to make the electronic paper steady state voltage. The common voltage Vcom of the pixel 230a, the pixel 230b, the pixel 230c, and the pixel 230d shown in FIG. 4 is, for example, the AC common voltage Vcom1 or the DC common voltage Vcom2 shown in FIG.

The pixel 230a includes an energy storage unit 232a and a switch unit 234a, and the switch unit 234a is controlled by the scan line 220 to sequentially connect the energy storage unit 232a to the reset voltage line 240, the reset voltage line 250, and the data line 210. The pixel 230b includes an energy storage unit 232b and a switch unit 234b, and the switch unit 234b is controlled by the scan line 220 to synchronously connect the energy storage unit 232b to the reset voltage when the energy storage unit 232a is electrically connected to the data line 210. Line 240. The pixel 230c includes an energy storage unit 232c and a switch unit 234c, and the switch unit 234c is controlled by the scan line 220 to synchronously connect the energy storage unit 232c to the reset voltage line when the energy storage unit 232a is electrically connected to the data line 210. 240. The pixel 230d includes an energy storage unit 232d and a switch unit 234d, and the switch unit 234d is controlled by the scan line 220 to synchronously connect the energy storage unit 232d to the reset voltage when the energy storage unit 232c is electrically connected to the data line 210. Line 240.

Further, the switching unit 234a includes switches Q1a to Q9a. The switch Q1a, the switch Q2a and the switch Q3a are controlled by the scan line 220 to electrically connect the data line 210 to the energy storage unit 232a, and the switch Q4a, the switch Q5a, and the switch Q6a are controlled by the scan line 220 to reset the voltage line 250. Sexual connection To the energy storage unit 232a. The switch Q7a, the switch Q8a, and the switch Q9a are controlled by the scan line 220 to electrically connect the reset voltage line 240 to the energy storage unit 232a. The switch Q1a, the switch Q2a, the switch Q3a, the switch Q4a, the switch Q5a and the switch Q7a are, for example, N-type transistors or positive voltage controlled switches, and the switches Q6a, Q8a and Q9a are P-type transistors or negative voltage control. Switch.

The switching unit 234b includes switches Q1b to Q9b. The switch Q1b, the switch Q2b and the switch Q3b are controlled by the scan line 220 to electrically connect the data line 210 to the energy storage unit 232b, and the switch Q4b, the switch Q5b, and the switch Q6b are controlled by the scan line 220 to reset the voltage line 250. Connected to the energy storage unit 232b. The switch Q7b, the switch Q8b, and the switch Q9b are controlled by the scan line 220 to electrically connect the reset voltage line 240 to the energy storage unit 232b. The switch Q1b, the switch Q2b, the switch Q3b, the switch Q5b, the switch Q8b and the switch Q9b are N-type transistors or positive voltage controlled switches, and the switches Q4b, Q6b and Q7b are P-type transistors or negative voltage controlled switches. .

The switching unit 234c includes switches Q1c to Q9c. The switch Q1c, the switch Q2c and the switch Q3c are controlled by the scan line 220 to electrically connect the data line 210 to the energy storage unit 232c, and the switch Q4c, the switch Q5c, and the switch Q6c are controlled by the scan line 220 to reset the voltage line 250. Connected to the energy storage unit 232c. The switch Q7c, the switch Q8c, and the switch Q9c are controlled by the scan line 220 to electrically connect the reset voltage line 240 to the energy storage unit 232c. Switch Q1c, switch Q2c, switch Q3c, switch Q4c, switch Q6c and switch Q9c are N-type transistor or positive voltage controlled switch, switch Q5c, switch Q7c and switch Q8c are P-type transistors or negative voltage controlled switches.

The switching unit 234d includes switches Q1d to Q9d. The switch Q1d, the switch Q2d and the switch Q3d are controlled by the scan line 220 to electrically connect the data line 210 to the energy storage unit 232d, and the switch Q4d, the switch Q5d, and the switch Q6d are controlled by the scan line 220 to reset the voltage line 250. Connected to the energy storage unit 232d. The switch Q7d, the switch Q8d, and the switch Q9d are controlled by the scan line 220 to electrically connect the reset voltage line 240 to the energy storage unit 232d. Switch Q1d, switch Q2d, switch Q3d, switch Q4d, switch Q7d and switch Q8d are N-type transistors or positive voltage controlled switches, and switches Q5b, Q6b and Q9b are P-type transistors or negative-voltage controlled switches. .

For convenience of explanation, the following description will be described with respect to the pixel 230a, the pixel 230b, and the pixel 230c. Unlike the conventional electronic paper display in a full-frame activation manner, the unit of activation of the electronic paper display 20 is performed in a column manner. The switch Q7a, the switch Q8a and the switch Q9a are turned on at time T1, so that the reset voltage line 240 is electrically connected to the energy storage unit 232a. The energy storage unit 232a of the first column is charged with a reset voltage +VDD and a common voltage Vcom.

The switch Q4a, the switch Q5a, the switch Q6a, the switch Q4b, the switch Q5b and the switch Q6b are turned on at time T2, so that the reset voltage line 250 is electrically connected to the energy storage unit 232a and the energy storage unit 232b. The energy storage unit 232a of the first column and the energy storage unit 232b of the second column are charged with the reset voltage -VDD and the common voltage Vcom.

Switch Q1a, switch Q2a, switch Q3a, switch Q7b, switch Q8b, The switch Q9b, the switch Q7c, the switch Q8c and the switch Q9c are turned on at time T3, so that the data voltage DATA1 is transmitted to the energy storage unit 232a and the reset voltage line 240 is electrically connected to the energy storage unit 232b and the energy storage unit 232c. In other words, when the energy storage unit 232a is charged according to the data voltage Data1 and the common voltage Vcom, the energy storage unit 232b of the second column and the energy storage unit 232c of the third column are synchronously performed according to the reset voltage -VDD and the common voltage Vcom. Charging.

According to the above process, the electronic paper display 20 sequentially drives the pixels 230a, 230b, and 230c in units of columns and sequentially aligns the left pixel 232a, the right pixel 232a, the left pixel 232b, the right pixel 232b, and the left side. The pixel 232c and the right pixel 232c are charged three times to achieve particle activation and data voltage update. In other words, the electronic paper display 20 first drives all the pixels 230a of the first column according to the reset voltage +VDD, and then drives all the pixels 230a of the first column according to the reset voltage -VDD. Then, when the electronic paper display 20 drives all the pixels 230a of the first column according to the data voltage DATA1, all the pixels 230b and 230c of the second column are reset in synchronization according to the reset voltage +VDD. Second embodiment

Please refer to FIG. 6 and FIG. 7 simultaneously. FIG. 6 is a partial equivalent circuit diagram of an electronic paper display according to a second embodiment of the present invention, and FIG. 7 is a second embodiment of the present invention. Part of the signal timing diagram of the electronic paper display. The electronic paper display 30 includes a data line 210, a reset voltage line 240, a reset voltage line 250, a scan line 220, pixels 330a to 330p, and a drive circuit 360.

The data line 210 is used to transmit the data driving signals Source1 to Source4. Reset voltage line 240 is used to pass reset voltage + VDD, reset The voltage +VDD is used to drive the pixel to display a white white voltage or to make the electronic paper steady state voltage. The reset voltage line 250 is used to pass the reset voltage -VDD, and the reset voltage -VDD is to drive the pixel to display a black black voltage or to make the electronic paper steady state voltage. The common voltage Vcom of the pixel 330a to the pixel 330p shown in FIG. 6 is, for example, the AC common voltage Vcom1 or the DC common voltage Vcom2 shown in FIG.

The drive circuit 360 includes a displacement unit 362 and a switch unit 364, and the switch unit 364 includes switches Q1 to Q12. Switches Q1 through Q12 are controlled by displacement unit 362. Switch Q1 is turned on at time T1 such that reset voltage line 240 is electrically coupled to pixel 330a. The drive circuit 360 drives the pixel 330a in accordance with the reset voltage +VDD. Switch Q2 is then turned on at time T2 such that reset voltage line 250 is electrically coupled to pixel 330a. The drive circuit 360 drives the pixel 330a in accordance with the reset voltage -VDD. The switches Q3 and Q4 are turned on at time T3 such that the data voltage DATA1 is transferred to the pixel 330a and the reset voltage line 240 is electrically coupled to the pixel 330b. When the drive circuit 360 drives the pixel 330a based on the material voltage DATA1, the pixel 330b is driven in synchronization according to the reset voltage +VDD.

Switch Q5 is then turned on at time T4 such that reset voltage line 250 is electrically coupled to pixel 330b. The drive circuit 360 drives the pixel 330b according to the reset voltage -VDD. The switches Q6 and Q7 are turned on at time T5 such that the data voltage DATA2 is transferred to the pixel 330b and the reset voltage line 240 is electrically coupled to the pixel 330c. When the drive circuit 360 drives the pixel 330b according to the material voltage DATA2, the pixel 330c is driven in synchronization according to the reset voltage +VDD. By analogy, the driving circuit 360 sequentially according to the reset voltage +VDD, the reset voltage -VDD and the data voltage DATA3 at time T5, time T6 and time T7. The pixel 330c is driven, and the driving circuit 360 drives the pixel 330d according to the reset voltage +VDD, the reset voltage -VDD, and the data voltage DATA4 in sequence T7, time T8, and time T9.

According to the above process, the electronic paper display 30 sequentially drives the pixels 330a, 330b, 330c, and 330d of the first column in units of pixels. Next, the electronic paper display 30 sequentially drives the pixels 330e, 330f, 330g, and 330h of the second column in units of pixels. Following the electronic paper display 30, the pixels 330i, 330j, 330k, and 330l of the third column are sequentially driven in units of pixels. Then, the electronic paper display 30 sequentially drives the pixels 330m, the pixels 330n, the pixels 330o, and the pixels 330p of the fourth column in units of pixels. The electronic paper display 30 sequentially charges the pixels 330a to 330p three times to achieve particle activation and data voltage update.

Third embodiment

Please refer to FIG. 8 and FIG. 9 simultaneously. FIG. 8 is a partial equivalent circuit diagram of an electronic paper display according to a third embodiment of the present invention, and FIG. 9 is a third embodiment of the present invention. Part of the signal timing diagram of the electronic paper display. The third embodiment is different from the second embodiment in that the displacement unit 462 and the switching unit 464 of the driving circuit 460 are different from the displacement unit 362 and the switching unit 364 of the driving circuit 360. The common voltage Vcom of the pixel 330a to the pixel 330p shown in FIG. 8 is, for example, the DC common voltage Vcom2 shown in FIG.

Switch Q1 is turned on at time T1 such that reset voltage line 240 is electrically coupled to pixel 330a. The drive circuit 460 drives the pixel 330a in accordance with the reset voltage +VDD. Then switches Q2 and Q4 are turned on at time T2, so that the reset is completed. The crimping line 250 is electrically connected to the pixel 330a and the reset voltage line 240 is electrically connected to the pixel 330b. The drive circuit 460 drives the pixel 330a according to the reset voltage -VDD and drives the pixel 330b according to the reset voltage +VDD. The switches Q3, Q5, and Q7 are turned on at time T3, so that the data voltage DATA1 is transferred to the pixel 330a and the reset voltage line 250 and the reset voltage line 240 are electrically connected to the pixel 330b and the pixel 330c, respectively. When the driving circuit 460 drives the pixel 330a based on the material voltage DATA1, the driving circuit 330b is driven in accordance with the reset voltage -VDD and the pixel 330c is driven in accordance with the reset voltage +VDD.

Then, the switches Q6, Q8 and Q10 are turned on at time T4, so that the data voltage DATA2 is transmitted to the pixel 330b and the reset voltage line 240 and the reset voltage line 250 are electrically connected to the pixel 330d and the pixel 330c, respectively. When the driving circuit 460 drives the pixel 330b according to the material voltage DATA2, the driving pixel 330d is driven in accordance with the reset voltage +VDD and the pixel 330c is driven in accordance with the reset voltage -VDD.

According to the above process, the electronic paper display 40 sequentially drives the pixels 330a, 330b, 330c, and 330d of the first column in units of pixels. Next, the electronic paper display 30 sequentially drives the pixels 330e, 330f, 330g, and 330h of the second column in units of pixels. Following the electronic paper display 30, the pixels 330i, 330j, 330k, and 330l of the third column are sequentially driven in units of pixels. Then, the electronic paper display 30 sequentially drives the pixels 330m, the pixels 330n, the pixels 330o, and the pixels 330p of the fourth column in units of pixels. The electronic paper display 30 sequentially charges the pixels 330a to 330p three times to achieve particle activation and data voltage update.

Fourth embodiment

Please refer to FIG. 10 and FIG. 11 simultaneously. FIG. 10 is a partial equivalent circuit diagram of an electronic paper display according to a fourth embodiment of the present invention, and FIG. 11 is a fourth embodiment of the present invention. Part of the signal timing diagram of the electronic paper display. The fourth embodiment is different from the third embodiment in that the displacement unit 562 and the switching unit 564 of the driving circuit 560 are different from the displacement unit 462 and the switching unit 464 of the driving circuit 460. The common voltage Vcom of the pixel 330a to the pixel 330p shown in FIG. 10 is, for example, the AC common voltage Vcom1 shown in FIG.

Switch Q1 is turned on at time T1 such that reset voltage line 240 is electrically coupled to pixel 330a. The drive circuit 460 drives the pixel 330a in accordance with the reset voltage +VDD. The switches Q2 and Q4 are then turned on at time T2 such that the reset voltage line 250 is electrically coupled to the pixel 330a and the pixel 330b. The drive circuit 460 drives the pixel 330a and the pixel 330b according to the reset voltage -VDD. The switches Q3, Q5, and Q7 are turned on at time T3, such that the data voltage DATA1 is transferred to the pixel 330a and the reset voltage line 240 is electrically coupled to the pixel 330b and the pixel 330c. When the driving circuit 460 drives the pixel 330a based on the material voltage DATA1, the pixel 330b and the pixel 330c are driven in synchronization according to the reset voltage +VDD.

The switches Q6, Q8, and Q10 are then turned on at time T4, such that the data voltage DATA2 is transferred to the pixel 330b and the reset voltage line 250 is electrically coupled to the pixel 330d and the pixel 330c. When the driving circuit 460 drives the pixel 330b based on the material voltage DATA2, the pixel 330d and the pixel 330c are driven in synchronization according to the reset voltage -VDD.

According to the above process, the electronic paper display 50 sequentially drives the pixels 330a, 330b, 330c, and 330d of the first column in units of pixels. Then, the electronic paper display 30 is sequentially driven in units of pixels. The pixel 330e, the pixel 330f, the pixel 330g, and the pixel 330h of the second column. Following the electronic paper display 30, the pixels 330i, 330j, 330k, and 330l of the third column are sequentially driven in units of pixels. Then, the electronic paper display 30 sequentially drives the pixels 330m, the pixels 330n, the pixels 330o, and the pixels 330p of the fourth column in units of pixels. The electronic paper display 30 sequentially charges the pixels 330a to 330p three times to achieve particle activation and data voltage update.

The electronic paper display extreme driving method disclosed in the above embodiments of the present invention makes the state change unnecessary to change the particle activation time and the data update time.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10, 20, 30, 40, 50‧‧‧ electronic paper display

120‧‧‧Display system upper module

130‧‧‧Common voltage terminal

140‧‧‧Micro Control Wafer or Single Chip

150, 170‧‧‧ drive wafer

160‧‧‧Power Control Wafer

180‧‧‧Display system lower module

186, 330a~330p‧‧‧ pixels

182, 210‧‧‧ data line

184, 220‧‧‧ scan lines

230a~230d‧‧‧ pixels

232a~232d‧‧‧ energy storage structure

234a~234d‧‧‧Switch unit

Q1a~Q9a, Q1b~Q9b, Q1c~Q9c, Q1d~Q9d, Q1~Q12‧‧‧ switch

360, 460, 560‧‧‧ drive circuit

362, 462, 562‧‧‧ displacement units

364, 464, 564‧ ‧ switch unit

Figure 1 is a schematic diagram showing an electronic paper display.

Figure 2 is a partial equivalent circuit diagram of a conventional electronic paper display.

Figure 3 is a partial drive timing diagram of a conventional electronic paper display.

Figure 4 is a partial equivalent circuit diagram of an electronic paper display in accordance with a first embodiment of the present invention.

Fig. 5 is a timing chart showing a part of the signal of the electronic paper display according to the first embodiment of the present invention.

Figure 6 is a partial equivalent circuit diagram of an electronic paper display in accordance with a second embodiment of the present invention.

Figure 7 is a partial timing diagram of an electronic paper display in accordance with a second embodiment of the present invention.

Figure 8 is a partial equivalent circuit diagram of an electronic paper display in accordance with a third embodiment of the present invention.

Figure 9 is a partial timing diagram of an electronic paper display in accordance with a third embodiment of the present invention.

Figure 10 is a partial equivalent circuit diagram of an electronic paper display in accordance with a fourth embodiment of the present invention.

Figure 11 is a partial timing diagram of an electronic paper display in accordance with a fourth embodiment of the present invention.

210. . . Data line

220. . . Scanning line

240, 250. . . Reset voltage line

330a～330p. . . Pixel

360. . . Drive circuit

362. . . Displacement unit

364. . . Switch unit

Q1～Q12. . . switch

Claims (29)

A driving method of an electronic paper display, comprising: driving a first pixel according to a first reset voltage; driving the first pixel according to a second reset voltage; and synchronously driving the first pixel according to a data voltage The second pixel is reset according to the first reset voltage. The driving method of claim 1, wherein in the step of driving the first pixel according to a data voltage, the third pixel is driven more synchronously according to the first reset voltage. The driving method of claim 2, wherein the common voltage of the first pixel, the second pixel, and the third pixel is an alternating current common voltage (AC Vcom). The driving method of claim 1, wherein in the step of driving the first pixel according to a data voltage, the third pixel is driven more synchronously according to the second reset voltage. The driving method of claim 4, wherein the common voltage of the first pixel, the second pixel, and the third pixel is a DC common voltage (DC Vcom). The driving method of claim 1, wherein the first reset voltage is a black voltage or a white voltage or an electronic paper steady state voltage. The driving method of claim 1, wherein the second reset voltage is a black voltage or a white voltage or a steady state voltage of the electronic paper. An electronic paper display comprising: a data line for transmitting a data voltage; a first reset voltage line for transmitting a first reset voltage; and a second reset voltage line for transmitting a second a reset voltage; a plurality of scan lines; a first pixel comprising: a first energy storage unit; and a first switch unit controlled by the scan lines to sequentially electrically connect the first energy storage unit Connecting the first reset voltage line, the second reset voltage line and the data line; and a second pixel, comprising: a second energy storage unit; and a second switch unit controlled by the scans The wire electrically connects the second energy storage unit to the first reset voltage line synchronously when the first energy storage unit is electrically connected to the data line. The electronic paper display of claim 8, wherein the first switch unit comprises: a first switch; a second switch; a third switch, the first switch, the second switch, the third The open relationship is controlled by the scan lines electrically connecting the data line to the first energy storage unit; a fourth switch; a fifth switch; a sixth switch, the fourth switch, the fifth switch, the The sixth open relationship is controlled by the scan lines electrically connecting the second reset voltage line to the first energy storage unit; a seventh switch; an eighth switch; a ninth switch, the seventh switch, The eighth switch, the ninth open relationship is controlled by the scan lines electrically connecting the first reset voltage line to the first energy storage unit. The electronic paper display of claim 8, wherein the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the seventh open relationship are N-type transistors Or a positive voltage controlled switch, the sixth switch, the eighth switch and the ninth open relationship are a P-type transistor or a negative voltage controlled switch. The electronic paper display of claim 8, wherein the second switch unit comprises: a first switch; a second switch; a third switch, the first switch, the second switch, the third The open relationship is controlled by the scan lines electrically connecting the data line to the second energy storage unit; a fourth switch; a fifth switch; a sixth switch, the fourth switch, the fifth switch, the The sixth open relationship is controlled by the scan lines electrically connecting the second reset voltage line to the second energy storage unit; a seventh switch; an eighth switch; a ninth switch, the seventh switch, The eighth switch, the ninth open relationship is controlled by the scan lines electrically connecting the first reset voltage line to the second energy storage unit. The electronic paper display of claim 11, wherein the first switch, the second switch, the third switch, the fifth switch, the eighth switch, and the ninth open relationship are N-type transistors Or a positive voltage controlled switch, the fourth switch, the sixth switch and the seventh open relationship are P-type transistors or negative voltage controlled switches. The electronic paper display of claim 8, further comprising: a third pixel, comprising: a third energy storage unit; and a third switching unit controlled by the scan lines for When the first energy storage unit is electrically connected to the data line, the third energy storage unit is synchronously electrically connected to the first reset voltage line. The electronic paper display of claim 13, wherein the third switch unit comprises: a first switch; a second switch; a third switch, the first switch, the second switch, the third The open relationship is controlled by the first scan line, the second scan line and the third scan line electrically connecting the data line to the third energy storage unit; a fourth switch; a fifth switch; a sixth a switch, the fourth switch, the fifth switch, the sixth open relationship is controlled by the scan lines electrically connecting the second reset voltage line to the third energy storage unit; a seventh switch; The eighth switch; the ninth switch, the seventh switch, the eighth switch, and the ninth open relationship are controlled by the scan lines to electrically connect the first reset voltage line to the third energy storage unit. The electronic paper display of claim 14, wherein the first switch, the second switch, the third switch, the fourth switch, the sixth switch, and the ninth open relationship are N-type transistors Or a positive voltage controlled switch, the fifth switch, the seventh switch and the eighth open relationship are P-type transistors or negative voltage controlled switches. An electronic paper display comprising: a first reset voltage line for transmitting a first reset voltage; and a second reset voltage line for transmitting a second reset voltage; a first pixel; a second pixel; and a driving circuit for driving the first pixel according to the first reset voltage and the second reset voltage, and driving the first pixel according to a data voltage (Data) When the data voltage (Data) drives the first pixel, the second pixel is driven synchronously according to the first reset voltage. The electronic paper display of claim 16, wherein the driving circuit comprises: a displacement unit; and a switching unit controlled by the displacement unit to drive the first pixel according to the data voltage, synchronously according to The first reset voltage drives the second pixel. The electronic paper display of claim 17, wherein the switch unit comprises: a first switch controlled by the displacement unit to drive the first pixel according to the data voltage; and a second switch When the displacement unit is controlled to drive the first pixel according to the data voltage, the second pixel is driven synchronously according to the first reset voltage. The electronic paper display of claim 17, further comprising a third pixel, wherein the driving circuit drives the first pixel according to the data voltage (Data), and synchronously drives the second reset voltage according to the second reset voltage The third pixel. The electronic paper display of claim 19, wherein the driving circuit comprises: a displacement unit; and a switching unit comprising: a first switch controlled by the displacement unit to drive the first according to the data voltage a pixel; and a second switch controlled by the displacement unit to drive the first pixel according to the data voltage, synchronously driving the second pixel according to the first reset voltage; When the displacement unit is controlled to drive the first pixel according to the data voltage, the third pixel is synchronously driven according to the second reset voltage. The electronic paper display of claim 16, further comprising a third pixel, wherein when the driving circuit drives the first pixel according to the data voltage, the third pixel is synchronously driven according to the first reset voltage . The electronic paper display of claim 21, wherein the driving circuit comprises: a displacement unit; and a switching unit comprising: a first switch controlled by the displacement unit to drive the first according to the data voltage a pixel; and a second switch controlled by the displacement unit to drive the first pixel according to the data voltage, synchronously driving the second pixel according to the first reset voltage; When the displacement unit is controlled to drive the first pixel according to the data voltage, the third pixel is synchronously driven according to the first reset voltage. The electronic paper display of claim 16, wherein the first reset voltage is a black voltage or a white voltage or an electronic paper steady state voltage. The electronic paper display of claim 16, wherein the second reset voltage is a black voltage or a white voltage or an electronic paper steady state voltage. A driving method of an electronic paper display, comprising: driving all pixels of the same column according to a first reset voltage; driving all pixels of the same column and the next column according to a second reset voltage; and driving the respective columns according to a data column voltage When all pixels of the same column are used, the next column and all of the following pixels are reset in synchronization according to the first reset voltage. The driving method of claim 25, wherein in the step of driving all pixels of the same column according to a data column voltage, the next column and all of the following are reset according to the second reset voltage more synchronously. Pixel. The driving method of claim 26, wherein a common voltage of all pixels in the first column, all pixels in the second column, and all pixels in the third column is an AC common voltage (AC Vcom) or a DC common voltage. (DC Vcom). The driving method of claim 25, wherein the first reset voltage is a black voltage or a white voltage or an electronic paper steady state voltage. The driving method of claim 26, wherein the second reset voltage is a black voltage or a white voltage or an electronic paper steady state voltage.