WO2014172974A1 - 阵列基板及其驱动方法和电致变色显示器 - Google Patents

阵列基板及其驱动方法和电致变色显示器 Download PDF

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Publication number
WO2014172974A1
WO2014172974A1 PCT/CN2013/077429 CN2013077429W WO2014172974A1 WO 2014172974 A1 WO2014172974 A1 WO 2014172974A1 CN 2013077429 W CN2013077429 W CN 2013077429W WO 2014172974 A1 WO2014172974 A1 WO 2014172974A1
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Prior art keywords
pixel electrode
central
thin film
film transistor
voltage
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PCT/CN2013/077429
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English (en)
French (fr)
Inventor
谷新
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US14/350,650 priority Critical patent/US9792874B2/en
Publication of WO2014172974A1 publication Critical patent/WO2014172974A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/38—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using electrochromic devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/441—Interconnections, e.g. scanning lines
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
    • G02F2001/1635—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor the pixel comprises active switching elements, e.g. TFT
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0254—Control of polarity reversal in general, other than for liquid crystal displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0262—The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters

Definitions

  • the present invention relates to the field of display, and in particular to an array substrate, a method of driving the array substrate, and an electrochromic display including the array substrate. Background technique
  • Electrochromism refers to the phenomenon that the optical properties (reflectance, transmittance, absorptivity, etc.) of a material undergo a stable and reversible color change under the action of an applied electric field, and the appearance is a reversible change in color and transparency.
  • a material having electrochromic properties is called an electrochromic material, and a device made of an electrochromic material is called an electrochromic device.
  • FIG. 1 shows a schematic cross-sectional view of a conventional electrochromic display panel.
  • the electrochromic display panel includes an upper substrate 10, a common electrode 20 disposed on a lower surface of the upper substrate 10, an array substrate 30, and an electrochromic material 80 filled between the upper substrate 10 and the array substrate 30.
  • the array substrate 30 is divided into a display area and a frame area adjacent to the display area, the display area includes a plurality of sets of data lines and a plurality of scan lines, and the plurality of sets of data lines and the plurality of scan lines intersect The display area is divided into a plurality of pixel areas.
  • the pixel electrode 32 formed on the upper surface of the lower substrate 31 is included in the pixel region.
  • the common electrode 20 and the pixel electrode 32 are energized to form an electric field, causing the electrochromic material to discolor.
  • the electrochromic material is uniformly distributed in each of the pixel regions, and there is no space between the electrochromic materials in any two adjacent pixel regions, and the electrochromic material can flow, therefore, when When the pixel electrode corresponding to one pixel region is in a voltage driving state, and the pixel electrode of the adjacent pixel region is in a voltage undriven state, the electrochromic material in the pixel region in the electrically driven state easily flows to the adjacent voltage. In the pixel region of the undriven state, the pixel region in the undriven state is discolored, thereby causing occurrence between adjacent pixel regions. The phenomenon of crosstalk reduces the display effect of the electrochromic display panel.
  • an array substrate a method of driving the array substrate, and an electrochromic display including the array substrate.
  • the electrochromic panel including the array substrate crosstalk is not easily generated between adjacent pixel regions, and includes The electrochromic display of the array substrate has a better display effect.
  • an array substrate wherein a display area of the array substrate includes a plurality of sets of data lines and a plurality of scan lines, the plurality of sets of data lines and the plurality of scan lines intersect, and the display is The area is divided into a plurality of pixel regions, and each of the pixel regions is provided with a pixel electrode electrically connected to the data line, wherein the pixel electrode includes a central pixel electrode and is adjacent to the central pixel electrode And electrically isolated peripheral pixel electrodes.
  • a central thin film transistor and a peripheral thin film transistor are disposed in the pixel region, and each of the data lines includes a first data line and a second data line, and a drain of the central thin film transistor and the central pixel electrode are electrically Connecting, a source of the central thin film transistor is electrically connected to the first data line, a drain of the peripheral thin film transistor is electrically connected to the peripheral pixel electrode, a source of the peripheral pixel electrode and the second The data lines are electrically connected.
  • the central thin film transistor and the peripheral thin film transistor are electrically connected to the same scan line.
  • the peripheral pixel electrode includes a plurality of pixel electrode strips, and one of the plurality of pixel electrode strips is formed with a notch, and the central pixel electrode is disposed in a space surrounded by the plurality of pixel electrode strips. And a drain of the central thin film transistor is electrically connected to the central pixel electrode through the gap.
  • the width of each of the pixel electrode strips is 1/10 of the width of the center pixel electrode to
  • an electrochromic display is provided, wherein the electrochromic display comprises the above array substrate provided by the present invention.
  • the electrochromic display includes a gate driver and a source driver, the gate driver being electrically coupled to the plurality of scan lines, the source driver being electrically coupled to the plurality of sets of data lines.
  • the electrochromic display further includes a voltage converter, the first end of the voltage converter is electrically connected to the source driver, and the second end of the voltage converter is electrically connected to the central pixel electrode, The third end of the voltage converter is electrically connected to the peripheral pixel electrode.
  • the electrochromic display further includes a transmitter for emitting a control signal, the voltage converter further having a fourth end electrically coupled to the transmitter.
  • a method for driving an array substrate wherein a display area of the array base includes a plurality of sets of data lines and a plurality of scan lines, the plurality of sets of data lines and the plurality of scan lines Intersecting, dividing the display area into a plurality of pixel areas, each of the pixel areas is provided with a pixel electrode, the pixel electrode is electrically connected to the data line, wherein the pixel electrode comprises a central pixel electrode and The peripheral pixel electrode adjacent to the central pixel electrode and electrically isolated, the driving method includes outputting a first voltage to the central pixel electrode through the data line, and outputting the first pixel to the peripheral pixel electrode through the data line The second voltage, the polarity of the first voltage is opposite to the polarity of the second voltage.
  • the absolute value of the first voltage is not less than the absolute value of the second voltage.
  • the driving method includes outputting the first voltage and then outputting the second voltage.
  • the second voltage is 0.05 s to 0.1 s behind the first voltage.
  • a central thin film transistor and a peripheral thin film transistor are disposed in the pixel region, and each of the data lines includes a first data line and a second data line, and a drain of the central thin film transistor and the central pixel electrode are electrically Connecting, a source of the central thin film transistor is electrically connected to the first data line, a drain of the peripheral thin film transistor is electrically connected to the peripheral pixel electrode, a source of the peripheral pixel electrode and the second The data line is electrically connected, and the driving method includes: outputting a first voltage to the central pixel electrode through the first data line, outputting a second voltage to the peripheral pixel electrode through the second data line, and controlling by a scan line The central thin film transistor and the peripheral film Transistor turn-on and turn-off.
  • the driving method includes controlling turn-on and turn-off of the center thin film transistor and the peripheral thin film transistor with the same scanning line in each of the pixel regions.
  • the electrochromic display provided by the present invention When the electrochromic display provided by the present invention is energized, in the driven pixel region, the polarity of the peripheral pixel electrode is opposite to the polarity of the central pixel electrode, so that the peripheral pixel electrode can be passed around the central pixel electrode.
  • the electrochromic material applies a reverse voltage, so that the electrochromic material discolored under the influence of the central pixel electrode flows to the peripheral pixel region corresponding to the peripheral pixel electrode, and then the fading reaction can be further performed under the action of the peripheral pixel electrode, thereby being effective
  • crosstalk occurs between adjacent pixel regions, and the display effect of the electrochromic display is improved.
  • Figure 1 is a schematic cross-sectional view of an electrochromic display panel
  • FIG. 2 is a schematic view of an array substrate according to the present invention.
  • FIG. 3 is a schematic view of one pixel electrode of the array substrate shown in FIG. 2;
  • FIG. 4 is a schematic view of a peripheral pixel electrode in the pixel electrode shown in FIG. 3;
  • FIG. 5 is a schematic diagram of a driving circuit of an electrochromic display provided by the present invention.
  • FIG. 6 is a timing diagram of a driving method provided by the present invention.
  • Figure 7 is a timing diagram of a preferred embodiment of the driving method of the present invention.
  • peripheral thin film transistor 35 central thin film transistor 36: Scan Line 40: Gate Driver
  • 32a center pixel electrode
  • 32b peripheral pixel electrode
  • an array substrate 30 is provided.
  • the display area of the array substrate 30 includes a plurality of sets of data lines 33 and a plurality of scan lines 36, a plurality of sets of data lines 33, and a plurality of scans.
  • Lines 36 intersect to divide the display area into a plurality of pixel areas, each of the pixel areas A pixel electrode 32 is disposed therein, and the pixel electrode 32 is electrically connected to the data line 33.
  • the pixel electrode 32 includes a central pixel electrode 32a and a peripheral pixel electrode 32b adjacent to and electrically isolated from the central pixel electrode 32a.
  • the array substrate may further include a common electrode and a common electrode line electrically connected to the common electrode.
  • a common electrode corresponding to a pixel electrode in the pixel region is disposed in each pixel region.
  • the pixel electrode and the corresponding common electrode cooperate to form an electric field, acting on the electrochromic material or the liquid crystal molecule, changing the color of the electrochromic material or changing the direction of the liquid crystal molecules.
  • the array substrate 30 provided by the present invention When the array substrate 30 provided by the present invention is applied to an electrochromic display panel of an electrochromic display, when the source driver of the electrochromic display is energized to the array substrate 30, the polarity of the central pixel electrode 32a can be made The peripheral pixel electrodes 32b have opposite polarities.
  • a portion corresponding to the central pixel electrode 32a in the pixel region may be referred to as a central pixel region, and a portion corresponding to the peripheral pixel electrode 32b may be referred to as a peripheral pixel region.
  • the central pixel area is the main display area, and thus the area of the central pixel area is larger than the area of the peripheral pixel area.
  • the polarity of the center pixel electrode 32a is opposite to the polarity of the peripheral pixel electrode 32b.
  • the central pixel electrode 32a applies a voltage to the electrochromic material in the central pixel region
  • the peripheral pixel electrode 32b applies another voltage to the peripheral pixel region. Since the polarity of the central pixel electrode 32a is opposite to the polarity of the peripheral pixel electrode 32b, The voltage applied by the center pixel electrode 32a is opposite to the voltage applied by the peripheral pixel electrode 32b.
  • the electrochromic material that has flowed from the central pixel region to the peripheral pixel region is further subjected to a fading reaction under the voltage applied by the peripheral pixel electrode 32b, so that the phase in the electrochromic display panel can be effectively controlled.
  • the problem of crosstalk between adjacent pixel regions improves the display effect of the electrochromic display.
  • each set of data lines 33 may include a first data line 33a and a second The data line 33b, the drain of the central thin film transistor 35 is electrically connected to the central pixel electrode 32a, the source of the central thin film transistor 35 is electrically connected to the first data line 33a, and the drain of the peripheral thin film transistor 34 is electrically connected to the peripheral pixel electrode 32b.
  • the source of the peripheral pixel electrode 32b is electrically connected to the second data line 33b.
  • the center thin film transistor 35 When the center thin film transistor 35 is turned on, the first data line 33a is energized to the center pixel electrode 32a, and when the peripheral thin film transistor 34 is turned on, the second data line 33b is energized to the peripheral pixel electrode 32b.
  • the central thin film transistor 35 and the peripheral thin film transistor 34 may respectively correspond to one scanning line.
  • the central thin film transistor 35 and the peripheral thin film transistor 34 are electrically connected to the same scanning line 36, so that the array substrate 30 can have a more compact structure, which is advantageous for fabrication.
  • peripheral pixel electrode 32b there is no special requirement for the specific position and specific structure of the peripheral pixel electrode 32b, as long as the peripheral pixel electrode 32b is disposed in the vicinity of the center pixel electrode 32a, and the electrochromic material of the peripheral pixel region can be made. A fading reaction can occur.
  • the peripheral pixel area may be located on either side of the central pixel area.
  • the peripheral pixel regions may be located on the left and right sides of the central pixel region.
  • the electrochromic display panel including the array substrate 30 of the embodiment of the present invention is driven, the peripheral pixel regions located on the left and right sides of the central pixel region may be faded. The reaction can thereby reduce crosstalk in the electrochromic display panel.
  • the peripheral pixel area may surround the central pixel area, so that when the electrochromic display panel including the array substrate 30 of the embodiment of the present invention is driven, the peripheral pixel area located around the central pixel area may undergo a fading reaction, thereby The crosstalk in the electrochromic display panel is alleviated to a large extent.
  • the center pixel electrode 32a may be nested within the peripheral pixel electrode 32b.
  • the peripheral pixel electrode 32b may include a plurality of pixel electrode strips 321, one of the plurality of pixel electrode strips 321 is formed with a notch 322, and the central pixel electrode 32a is disposed at a plurality of pixel electrodes.
  • the space surrounded by the strips 321 and the drain of the central thin film transistor 35 are electrically connected to the central pixel electrode 32a through the notch 322.
  • the peripheral pixel electrode 32b shown in the figure has a square shape, but the present invention is not limited thereto.
  • the peripheral pixel electrode 32b can be formed into various shapes as needed.
  • the central pixel area controlled by the center pixel electrode 32a is the main display area. Therefore, the area occupied by the peripheral pixel area is not large, and the width of the pixel electrode strip 321 of the peripheral pixel electrode 32b can be selected depending on the case.
  • the width of each of the pixel electrode strips 321 may be 1/10 to 1/5 of the width of the center pixel electrode 32a.
  • an electrochromic display wherein the electronic color change display comprises the above array substrate provided by the embodiment of the present invention.
  • a polarity of the first voltage 1 ⁇ 4 32a outputs the first voltage V L through the data line 33 to the periphery toward the center of the pixel electrode 32b outputs the second pixel electrode and the second voltage V
  • the polarity of voltage V 2 is reversed.
  • the array substrate 30 is disposed in an electrochromic display panel that includes an electrochromic material.
  • the electrochromic display includes a gate driver 40 and a source driver 50.
  • the gate driver 40 is electrically connected to the plurality of scan lines 36, and the source driver 50 and the plurality of sets of data lines 33 are electrically connected. connection.
  • the center pixel electrode 32a and the peripheral pixel electrode 32b may be electrically connected to the source driver 50 through a plurality of sets of the data lines 33, respectively.
  • the gate driver 40 is coupled to the scan line 36 to generate a scan signal voltage, and the source driver is electrically coupled to the data line 33 to generate a polarity data signal voltage.
  • the array substrate 30 outside the thin film transistor comprises a thin film transistor 34 and the center 35, the gate driver 40 through the scan lines 36 to provide a thin film transistor 34 outside the thin film transistor 35 and a center scan signal to control the peripheral Thin film transistor 34 and central thin film transistor
  • the peripheral thin film transistor 34 and the central thin film transistor 35 located in the same pixel region are simultaneously turned on and turned off at the same time.
  • the source driver can output a first voltage to the central pixel electrode 32a through the data line 33
  • V l 5 and the source driver 50 may output a second voltage V 2 to the peripheral pixel electrode 32b through the data line 33, the polarity of the first voltage 1 ⁇ 4 being opposite to the polarity of the second voltage V 2 .
  • the source driver 50 When each group of data When the line 33 includes the first data line 33a and the second data line 33b, respectively, the source driver 50 outputs the first voltage 1 ⁇ 4 to the center pixel electrode 32a through the first data line 33a, and outputs to the peripheral pixel electrode 32b through the second data line 33b.
  • the second voltage V 2 is the first voltage 1 ⁇ 4 to the center pixel electrode 32a through the first data line 33a, and outputs to the peripheral pixel electrode 32b through the second data line 33b.
  • FIG. 6 Shown in FIG. 6 is a schematic diagram of a driving mode of an electrochromic display provided by an embodiment of the present invention.
  • V ⁇ m is the voltage of the common electrode, as described above, each pixel region is provided with a common electrode corresponding to the pixel electrode in the pixel region, and the array substrate is further provided with a common power supply to the common electrode Electrode wire.
  • the center pixel electrode 32a has a polarity opposite to that of the peripheral pixel electrode when the electrochromic display is driven.
  • the center pixel electrode 32a applies a voltage to the electrochromic material in the central pixel region
  • the peripheral pixel electrode 32b applies another voltage to the peripheral pixel region due to the polarity of the center pixel electrode 32a and the peripheral pixel electrode 32b.
  • the polarity is opposite, so the voltage applied by the center pixel electrode 32a is opposite to the voltage applied by the peripheral pixel electrode 32b.
  • the electrochromic material that has changed from the central pixel region to the peripheral pixel region will undergo a fading reaction under the voltage applied by the peripheral pixel electrode 32b, thereby effectively controlling the electrochromic display panel.
  • the problem of crosstalk between adjacent pixel areas improves the display effect of the electrochromic display.
  • the electrochromic display may further include a voltage converter 60, and the first end of the voltage converter 60 is electrically connected to the source driver 50, and the voltage is converted.
  • the second end of the device 60 is electrically connected to the center pixel electrode 33a, and the third end of the voltage converter 60 is electrically connected to the peripheral pixel electrode 33b.
  • the electrochromic display can convert the data signal voltage supplied from the source driver 50 into a first voltage V and a second voltage V 2 of opposite polarities, which are respectively supplied to the central pixel electrode 32a and the peripheral pixel electrode 32b.
  • the first voltage 1 ⁇ 4 and the second voltage V 2 may be synchronized or unsynchronized. Some electrochromic materials have a faster color response, and the first voltage and the second voltage V 2 may be synchronized. While some electrochromic materials have a slower response speed, in this case, the first voltage 1 ⁇ 4 and the second voltage V 2 may be out of sync.
  • the electrochromic display further includes a transmitter 70 for emitting a control signal OE, the voltage converter 60 further having a fourth electrical connection with the transmitter 70 end.
  • the second voltage V 2 lags behind the first voltage V l . Therefore, the working steps of the electrochromic display are as follows: As shown in FIG. 7 , the transmitter 70 is set to each The control signal OE is transmitted once every predetermined time interval, and the voltage converter 60, when receiving the control signal OE, supplies only the first voltage V1 to the first data line 32a . The voltage converter 60 does not receive the control signal OE. In the case, the first voltage V l is supplied to the first data line 32a and the second voltage V 2 is supplied to the second data line 32b.
  • the driving method will be described in detail below, and will not be described here.
  • the absolute value of the first voltage V ⁇ is not less than the absolute value of the second voltage v 2 .
  • the delay time for outputting the second voltage V 2 may be determined according to a specific electrochromic material and a specific value of the first voltage second voltage V 2 and the voltage V ⁇ m of the common electrode.
  • the display area of the array substrate 30 includes a plurality of sets of data lines 33 and a plurality of scan lines 36, a plurality of sets of data lines 33 and The plurality of scanning lines 36 are intersected to divide the display area into a plurality of pixel areas, and each of the pixel areas is provided with a pixel electrode 32, and the pixel electrode 32 is electrically connected to the data line 33, wherein the pixel electrode 32 includes The central pixel electrode 32a and the peripheral pixel electrode 32b adjacent to and electrically isolated from the central pixel electrode 32a.
  • the method comprising driving the data line through the center of the pixel electrode and to a first output voltage 2, the periphery of the pixel electrode to the second output through the data line voltage V
  • the polarity of the first voltage is opposite to the polarity of the second voltage V 2 .
  • the absolute value of the first voltage 1 ⁇ 4 is not less than the absolute value of the second voltage 2.
  • the central pixel region is first at the central pixel electrode 32a. The color change reaction occurs under the action, and then flows to the peripheral pixel region. Therefore, the driving method may include outputting the second voltage V 2 after outputting the first voltage 1 ⁇ 4.
  • the above steps may be implemented by the transmitter and the voltage converter.
  • the second voltage V 2 may be 0.05 s to 0.1 s behind the first voltage.
  • the driving method according to the embodiment of the present invention further includes providing a scan signal to the central pixel electrode 32a and the peripheral pixel electrode 32b through the scan line 36.
  • the scan signal is used to turn on the thin film transistor corresponding to the pixel electrode 32.
  • a central thin film transistor 35 and a peripheral thin film transistor 34 are disposed in the pixel region, and each set of data lines 33 includes a first data line 33a and a second data line.
  • the drain of the central thin film transistor 35 is electrically connected to the central pixel electrode 32a
  • the source of the central thin film transistor 35 is electrically connected to the first data line 33a
  • the drain of the peripheral thin film transistor 34 is electrically connected to the peripheral pixel electrode 32b.
  • the source of the electrode 32b is electrically connected to the second data line 33b.
  • the present invention provides the driving method of the embodiment may further include a first data line through the center 33a to the output voltage of the first pixel electrode 32a via a second data line to the periphery of the pixel electrode 33b V 32b outputs the second voltage 2, by
  • the scan line 36 controls the on and off of the center thin film transistor 35 and the peripheral thin film transistor 34.
  • gate driver 40 provides a scan signal to scan line 36.
  • the array substrate 30 includes a peripheral thin film transistor 34 and a central thin film transistor 35.
  • the driving method provided by the embodiment of the present invention further includes passing the scan line 36 to the peripheral thin film transistor 34 and the central thin film transistor.
  • a scan signal is provided to control the turn-on and turn-off of the peripheral thin film transistor 34 and the central thin film transistor 35.
  • the states of the peripheral thin film transistor 34 and the central thin film transistor 35 located in the same pixel region are the same, that is, the peripheral thin film transistor 34 and the central thin film transistor 35 in the same pixel region are simultaneously turned on and turned off. Therefore, the driving method further includes using the same scan line in each of the pixel regions
  • control center thin film transistor 35 and the peripheral thin film transistor 34 are turned on and off.
  • the array substrate and the method for driving the array substrate are described in the embodiment of the present invention by using an electrochromic display as an example, those skilled in the art should understand that the array substrate is not It is limited to application to electrochromic displays, but can also be applied to other display devices.
  • the array substrate can also be applied to a liquid crystal display device or the like.

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Abstract

一种阵列基板（30）、一种电致变色显示器和所述阵列基板的驱动方法。该阵列基板（30）的显示区域内包括多组数据线（33）和多条扫描线（36）。多组数据线（33）和多条扫描线（36）相交，将显示区域划分为多个像素区域。每个像素区域内都设置有像素电极（32），该像素电极（32）与数据线（33）电连接。像素电极（32）包括中心像素电极（32a）和与该中心像素电极（32a）相邻且电性隔离的周边像素电极（32b）。驱动像素区域时，周边像素电极（32b）的极性与中心像素电极（32a）的极性相反，从而可以使从中心像素电极（32a）对应的中心像素区域流动到周边像素电极（32b）对应的周边像素区域的已经变色的电致变色材料发生褪色反应。从而可以有效的控制电致变色显示面板中相邻像素区域间发生串扰的问题，提高电致变色显示器的显示效果。

Description

阵列基板及其驱动方法和电致变色显示器 技术领域
本发明涉及显示领域， 具体地， 涉及一种阵列基板、 该阵列基板的驱动 方法和一种包括所述阵列基板的电致变色显示器。 背景技术
电致变色是指材料的光学属性（反射率、 透过率、 吸收率等）在外加电 场的作用下发生稳定、 可逆的颜色变化的现象， 在外观上表现为颜色和透明 度的可逆变化。 具有电致变色性能的材料称为电致变色材料， 用电致变色材 料^ ^成的器件称为电致变色器件。
近年来， 电致变色材料被应用于显示器上。 与液晶显示器相比， 电致变 色显示器具有记忆功能、 不依赖视角等优点。 图 1 中所示的是常见的电致变 色显示面板的截面示意图。 所述电致变色显示面板包括上基板 10、 设置在上 基板 10的下表面上的公共电极 20、阵列基板 30和填充在上基板 10和阵列基 板 30之间的电致变色材料 80。 阵列基板 30分为显示区域和与所述显示区域 邻接的边框区域， 所述显示区域内包括多组数据线和多条扫描线， 所述多组 数据线和所述多条扫描线相交， 将所述显示区域划分为多个像素区域。 像素 区域内包括形成在下基板 31的上表面上的像素电极 32。 公共电极 20和像素 电极 32通电后形成电场， 使得电致变色材料变色。
但是， 由于电致变色材料是均匀分布在每个所述像素区域内的， 且任意 相邻两个像素区域内的电致变色材料之间没有间隔， 且电致变色材料可以流 动， 因此， 当与一个像素区域对应的像素电极处于电压驱动状态、 而相邻的 像素区域的像素电极处于电压未驱动状态时， 处于电驱动状态的像素区域中 的电致变色材料容易流动至相邻的处于电压未驱动状态的像素区域中， 导致 该处于电压未驱动状态的像素区域发生变色， 进而造成相邻像素区域间发生 串扰的现象， 从而降低了电致变色显示面板的显示效果。
因此， 如何避免电致变色显示面板中相邻像素间发生串扰成为本领域亟 待解决的技术问题。 发明内容
因此， 需要一种阵列基板、 该阵列基板的驱动方法和一种包括该阵列基 板的电致变色显示器， 包括该阵列基板的电致变色面板中， 相邻像素区域间 不容易产生串扰， 并且包括所述阵列基板的电致变色显示器具有较好的显示 效果。
作为本发明的一个方面， 提供一种阵列基板， 该阵列基板的显示区域内 包括多组数据线和多条扫描线， 所述多组数据线和所述多条扫描线相交， 将 所述显示区域划分为多个像素区域， 每个所述像素区域内都设置有像素电极， 该像素电极与所述数据线电连接， 其中， 所述像素电极包括中心像素电极和 与该中心像素电极相邻且电性隔离的周边像素电极。
例如， 所述像素区域内设置有中心薄膜晶体管和周边薄膜晶体管， 每组 所述数据线都包括第一数据线和第二数据线， 所述中心薄膜晶体管的漏极与 所述中心像素电极电连接， 所述中心薄膜晶体管的源极与所述第一数据线电 连接， 所述周边薄膜晶体管的漏极与所述周边像素电极电连接， 所述周边像 素电极的源极与所述第二数据线电连接。
例如， 在每个所述像素区域中， 所述中心薄膜晶体管和所述周边薄膜晶 体管与同一条所述扫描线电连接。
优选地， 所述周边像素电极包括多个像素电极条， 多个所述像素电极条 中的一个上形成有缺口， 所述中心像素电极设置在所述多个像素电极条围成 的空间内， 且所述中心薄膜晶体管的漏极穿过所述缺口与所述中心像素电极 电连接。
例如， 每个所述像素电极条的宽度为所述中心像素电极的宽度的 1/10至
1/5。 作为本发明的另一个方面， 提供一种电致变色显示器， 其中， 该电致变 色显示器包括本发明所提供的上述阵列基板。
例如， 所述电致变色显示器包括栅极驱动器和源极驱动器， 所述栅极驱 动器与多条所述扫描线电连接， 所述源极驱动器与所述多组数据线电连接。
例如， 所述电致变色显示器还包括电压转换器， 所述电压转换器的第一 端与所述源极驱动器电连接， 所述电压转换器的第二端与所述中心像素电极 电连接， 所述电压转换器的第三端与所述周边像素电极电连接。
例如， 所述电致变色显示器还包括用于发出控制信号的发射器， 所述电 压转换器还具有与所述发射器电连接的第四端。
作为本发明的再一个方面， 还提供一种阵列基板的驱动方法， 所述阵列 基的显示区域内包括多组数据线和多条扫描线， 所述多组数据线和所述多条 扫描线相交， 将所述显示区域划分为多个像素区域， 每个所述像素区域内都 设置有像素电极， 该像素电极与所述数据线电连接， 其中， 所述像素电极包 括中心像素电极和与该中心像素电极相邻且电性隔离的周边像素电极， 所述 驱动方法包括通过所述数据线向所述中心像素电极输出第一电压， 并且通过 所述数据线向所述周边像素电极输出第二电压， 所述第一电压的极性与所述 第二电压的极性相反。
例如， 所述第一电压的绝对值不小于所述第二电压的绝对值。
例如， 所述驱动方法包括先输出所述第一电压后输出所述第二电压。 例如， 所述第二电压比所述第一电压落后 0.05s至 0.1s。
例如， 所述像素区域内设置有中心薄膜晶体管和周边薄膜晶体管， 每组 所述数据线都包括第一数据线和第二数据线， 所述中心薄膜晶体管的漏极与 所述中心像素电极电连接， 所述中心薄膜晶体管的源极与所述第一数据线电 连接， 所述周边薄膜晶体管的漏极与所述周边像素电极电连接， 所述周边像 素电极的源极与所述第二数据线电连接， 所述驱动方法包括通过所述第一数 据线向所述中心像素电极输出第一电压， 通过所述第二数据线向所述周边像 素电极输出第二电压， 通过扫描线控制所述中心薄膜晶体管和所述周边薄膜 晶体管的导通和截止。
例如， 所述驱动方法包括在每个所述像素区域中， 利用同一条扫描线控 制所述中心薄膜晶体管和所述周边薄膜晶体管的导通和截止。
当采用了本发明所提供的电致变色显示器通电工作时， 被驱动的像素区 域中， 周边像素电极的极性与中心像素电极的极性相反， 从而可以通过周边 像素电极向中心像素电极周围的电致变色材料施加一个反向电压， 使在中心 像素电极影响下变色的电致变色材料流向周边像素电极对应的周边像素区域 后， 可以在周边像素电极的作用下再发生褪色反应， 从而可以有效的控制电 致变色显示面板中， 相邻像素区域间发生串扰的问题， 提高电致变色显示器 的显示效果。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍， 显而易见地， 下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1是电致变色显示面板的截面示意图；
图 2是本发明所述的阵列基板的示意图；
图 3是图 2中所示的阵列基板的一个像素电极的示意图；
图 4是图 3中所示的像素电极中的周边像素电极的示意图；
图 5是本发明所提供的电致变色显示器的驱动电路示意图；
图 6是本发明所提供的驱动方法时序图；
图 7是本发明所述的驱动方法优选实施方式的时序图。
附图标记说明：
10: 上基板 20: 公共电极
30: 阵列基板 31 : 下基板
32: 像素电极 33: 数据线
34: 周边薄膜晶体管 35: 中心薄膜晶体管 36: 扫描线 40: 栅极驱动器
50: 源极驱动器 60: 电压转换器
70: 发射器 80: 电致变色材料
32a: 中心像素电极 32b: 周边像素电极
33a: 第一数据线 33b: 第二数据线
321 : 像素电极条 322: 缺口 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 "一个"、 "一" 或者 "该" 等类 似词语也不表示数量限制， 而是表示存在至少一个。 "包括" 或者 "包含" 等 类似的词语意指出现在 "包括" 或者 "包含" 前面的元件或者物件涵盖出现 在 "包括" 或者 "包含" 后面列举的元件或者物件及其等同， 并不排除其他 元件或者物件。 "连接" 或者 "相连" 等类似的词语并非限定于物理的或者机 械的连接， 而是可以包括电性的连接， 不管是直接的还是间接的。 "上"、 "下"、 "左"、 "右" 等仅用于表示相对位置关系， 当被描述对象的绝对位置 改变后， 则该相对位置关系也可能相应地改变。
以下结合附图对本发明的具体实施方式进行详细说明。 应当理解的是， 此处所描述的具体实施方式仅用于说明和解释本发明， 并不用于限制本发明。
如图 2所示， 作为本发明的一个方面， 提供一种阵列基板 30, 该阵列基 板 30的显示区域内包括多组数据线 33和多条扫描线 36,多组数据线 33和多 条扫描线 36相交， 将所述显示区域划分为多个像素区域， 每个所述像素区域 内都设置有像素电极 32, 该像素电极 32与数据线 33电连接， 其中， 像素电 极 32包括中心像素电极 32a和与该中心像素电极 32a相邻且电性隔离的周边 像素电极 32b。
本领域技术人员还应理解的是， 所述阵列基板还可以包括公共电极和与 公共电极对应电连接的公共电极线。 通常， 每个像素区域内都设置有与该像 素区域内的像素电极相对应的公共电极。 向阵列基板通电时， 像素电极和相 应的公共电极互相配合形成电场， 作用在电致变色材料或液晶分子上， 改变 电致变色材料的颜色或者改变液晶分子的方向。
当本发明所提供的阵列基板 30应用于电致变色显示器的电致变色显示面 板中时， 通过电致变色显示器的源极驱动器向阵列基板 30通电时， 可以使得 中心像素电极 32a的极性与周边像素电极 32b的极性相反。
在本发明实施例中， 可以将像素区域内与中心像素电极 32a对应的部分 称为中心像素区域， 与周边像素电极 32b对应的部分称为周边像素区域。 应 当理解的是， 中心像素区域是主显示区域， 因此中心像素区域的面积比周边 像素区域的面积大。
对像素区域进行驱动时， 中心像素电极 32a的极性与周边像素电极 32b 的极性相反。 中心像素电极 32a向中心像素区域内的电致变色材料施加一个 电压， 周边像素电极 32b向周边像素区域施加另一个电压， 由于中心像素电 极 32a的极性与周边像素电极 32b的极性相反， 所以中心像素电极 32a施加 的电压与周边像素电极 32b施加的电压反向。 此时， 从中心像素区域流动至 周边像素区内的已经变色的电致变色材料会在周边像素电极 32b施加的电压 的作用下再发生褪色反应， 从而可以有效地控制电致变色显示面板中相邻像 素区域间发生串扰的问题， 提高电致变色显示器的显示效果。
为了使得向阵列基板 30通电时， 周边像素电极 32b与中心像素电极 32a 具有相反的极性， 可以利用两个薄膜晶体管分别控制周边像素电极 32b和中 心像素电极 32a。 例如， 可以在所述像素区域内设置中心薄膜晶体管 35和周 边薄膜晶体管 34。相应地，每组数据线 33都可以包括第一数据线 33a和第二 数据线 33b, 中心薄膜晶体管 35的漏极与中心像素电极 32a电连接， 中心薄 膜晶体管 35的源极与第一数据线 33a电连接， 周边薄膜晶体管 34的漏极与 周边像素电极 32b电连接， 周边像素电极 32b的源极与第二数据线 33b电连 接。
中心薄膜晶体管 35导通时， 第一数据线 33a向中心像素电极 32a通电， 周边薄膜晶体管 34导通时， 第二数据线 33b向周边像素电极 32b通电。
在本发明实施例中， 在每个所述像素区域中， 中心薄膜晶体管 35和周边 薄膜晶体管 34可以分别对应一条扫描线。 例如， 在每个所述像素区域内， 中 心薄膜晶体管 35和周边薄膜晶体管 34与同一条扫描线 36电连接， 从而可以 使阵列基板 30具有更加筒单的结构， 有利于加工制造。
在本发明实施例中， 对周边像素电极 32b的具体位置以及具体结构并没 有特殊的要求， 只要将周边像素电极 32b设置在中心像素电极 32a的附近， 并且可以使周边像素区域的电致变色材料发生褪色反应即可。
在本发明实施例中， 周边像素区域可以位于中心像素区域的任意侧。 例 如， 周边像素区域可以位于中心像素区域的左右两侧， 在驱动包括本发明实 施例所述的阵列基板 30的电致变色显示面板时， 位于中心像素区域左右两侧 的周边像素区域可以发生褪色反应， 从而可以减轻电致变色显示面板中的串 扰。
例如， 周边像素区域可以环绕中心像素区域， 从而使得在驱动包括本发 明实施例所述的阵列基板 30的电致变色显示面板时， 位于中心像素区域四周 的周边像素区域可以发生褪色反应， 从而可以在较大程度上减轻电致变色显 示面板中的串扰。
为了实现上述目的， 如图 2至图 4中所示， 中心像素电极 32a可以嵌套 在周边像素电极 32b内。 例如， 如图 3和图 4所示， 周边像素电极 32b可以 包括多个像素电极条 321 ,该多个像素电极条 321中的一个上形成有缺口 322, 中心像素电极 32a设置在多个像素电极条 321 围成的空间内， 且中心薄膜晶 体管 35的漏极穿过缺口 322与中心像素电极 32a电连接。 虽然在图 2至图 4 中示出的周边像素电极 32b为方框形， 但是， 本发明并不限于此。 可以根据 需要将周边像素电极 32b制成各种形状。
如上所述， 中心像素电极 32a控制的中心像素区域是主要的显示区域， 因此， 周边像素区域所占的面积并不是很大， 可以根据情况选择周边像素电 极 32b的像素电极条 321的宽度。 例如， 在本发明实施例中， 每个像素电极 条 321的宽度可以为中心像素电极 32a的宽度的 1/10至 1/5。
作为本发明的另一个方面， 还提供一种电致变色显示器， 其中， 该电子 变色显示器包括本发明实施例所提供的上述阵列基板。 在驱动所述阵列基板 时，可以通过数据线 33向中心像素电极 32a输出第一电压 Vl 向周边像素电 极 32b输出第二电压 V2, 所述第一电压 ¼的极性与所述第二电压 V2的极性 相反。
容易理解的是， 阵列基板 30设置在电致变色显示面板中， 该电致变色显 示面板包括电致变色材料。
进一步地， 如图 5所示， 所述电致变色显示器包括栅极驱动器 40和源极 驱动器 50,栅极驱动器 40与多条扫描线 36电连接， 源极驱动器 50与多组数 据线 33电连接。 中心像素电极 32a和周边像素电极 32b可以分别通过多组所 述数据线 33与源极驱动器 50电连接。
栅极驱动器 40与扫描线 36连接， 产生扫描信号电压， 所述源极驱动器 与数据线 33电连接， 产生极性数据信号电压。
在本发明的一种实施方式中， 阵列基板 30包括周边薄膜晶体管 34和中 心薄膜晶体管 35 ,栅极驱动器 40通过扫描线 36向周边薄膜晶体管 34和中心 薄膜晶体管 35提供扫描信号， 以控制周边薄膜晶体管 34和中心薄膜晶体管
35的导通和截止。 在本发明实施例中， 位于同一像素区域内的周边薄膜晶体 管 34和中心薄膜晶体管 35同时导通， 同时截止。
所述源极驱动器可以通过数据线 33 向中心像素电极 32a输出第一电压
Vl 5 并且源极驱动器 50可以通过数据线 33向周边像素电极 32b输出第二电 压 V2, 所述第一电压 ¼的极性与所述第二电压 V2的极性相反。 当每组数据 线 33分别包括第一数据线 33a和第二数据线 33b时， 源极驱动器 50通过第 一数据线 33a向中心像素电极 32a输出第一电压 ¼, 通过第二数据线 33b向 周边像素电极 32b输出第二电压 V2。
图 6 中所示的是本发明实施例所提供的电致变色显示器的驱动模式的示 意图。 其中 V∞m是公共电极的电压， 如上文中所述， 每个像素区域内都设置 有与该像素区域内的像素电极相对应的公共电极， 所述阵列基板还设置有向 公共电极供电的公共电极线。
从图 6 中可以看出， 在对所述电致变色显示器进行驱动时， 中心像素电 极 32a的极性与周边像素电极的极性相反。
如上文中所述， 中心像素电极 32a向中心像素区域内的电致变色材料施 加一个电压， 周边像素电极 32b向周边像素区域施加另一个电压， 由于中心 像素电极 32a的极性与周边像素电极 32b的极性相反，所以中心像素电极 32a 施加的电压与周边像素电极 32b施加的电压反向。 此时， 从中心像素区域内 流动至周边像素区内的已经变色的电致变色材料会在周边像素电极 32b施加 的电压的作用下再发生褪色反应， 从而可以有效的控制电致变色显示面板中 相邻像素区域间发生串扰的问题， 提高电致变色显示器的显示效果。
为了便于控制中心像素电极 32a和周边像素电极 32b的极性， 例如， 所 述电致变色显示器还可以包括电压转换器 60,电压转换器 60的第一端与源极 驱动器 50电连接， 电压转换器 60的第二端与中心像素电极 33a电连接， 电 压转换器 60的第三端与周边像素电极 33b电连接。
所述电致变色显示器可以将源极驱动器 50提供的数据信号电压转换为极 性相反的第一电压 V和第二电压 V2,分别输送给中心像素电极 32a和周边像 素电极 32b。
根据电致变色材料的不同， 第一电压 ¼与第二电压 V2可以是同步的也 可以是不同步的。 有些电致变色材料变色响应速度较快， 第一电压 与第二 电压 V2可以是同步的。而有些电致变色材料的响应速度较慢，在这种情况下， 第一电压 ¼和第二电压 V2可以为不同步。 在第一电压 和第二电压 V2不同步的情况中， 所述电致变色显示器还 包括用于发出控制信号 OE的发射器 70, 电压转换器 60还具有与发射器 70 电连接的第四端。
在本发明实施例所提供的实施方式中， 第二电压 V2落后于第一电压 Vl 所以， 所述电致变色显示器的工作步骤如下： 如图 7所示， 将发射器 70设置 为每间隔预定时间发射一次控制信号 OE, 电压转换器 60在接收到所述控制 信号 OE的情况下， 只向第一数据线 32a提供第一电压 Vl 电压转换器 60未 接收到所述控制信号 OE的情况下， 向第一数据线 32a提供第一电压 Vl 并 向第二数据线 32b提供第二电压 V2。 在下文中将对驱动方法进行详细介绍， 这里不再赘述。
由于从中心像素区域流动至周边像素区域的已经变色的电致变色材料的 量并不是很大， 因此， 在周边像素区域施加的电压不必太大即可完成褪色反 应。 例如， 所述第一电压 V 々绝对值不小于所述第二电压 v2的绝对值。
在本发明实施例中， 可以根据具体的电致变色材料以及第一电压 第 二电压 V2和公共电极的电压 V∞m的具体值来确定输出第二电压 V2的延迟时 间。
作为本发明的再一个方面， 还提供一种阵列基板的驱动方法， 如图 2所 示， 阵列基板 30的显示区域内包括多组数据线 33和多条扫描线 36, 多组数 据线 33和多条扫描线 36相交， 将所述显示区域划分为多个像素区域， 每个 所述像素区域内都设置有像素电极 32, 该像素电极 32与数据线 33电连接， 其中， 像素电极 32包括中心像素电极 32a和与该中心像素电极 32a相邻且电 性隔离的周边像素电极 32b。如图 6和图 7所示，所述驱动方法包括通过所述 数据线向所述中心像素电极输出第一电压 并且通过所述数据线向所述周 边像素电极输出第二电压 V2, 所述第一电压 的极性与所述第二电压 V2的 极性相反。
如上文中所述， 例如， 所述第一电压 ¼的绝对值不小于所述第二电压 2的绝对值。 在将所述阵列基板应用于电致变色显示器的情况中， 由于电致变色材料 变色时需要一定的响应时间， 因此， 在本发明实施例中， 所述中心像素区域 首先在中心像素电极 32a的作用下发生变色反应， 随后才会流动至周边像素 区域， 因此， 所述驱动方法可以包括先输出所述第一电压 ¼后输出所述第二 电压 V2。
在本发明实施例所提供的电致变色显示器中， 可以通过所述发射器和所 述电压转换器共同实现上述步骤。
例如， 所述第二电压 V2可以比所述第一电压 落后 0.05s至 0.1s。
本领域技术人员应当理解的是， 本发明实施例所述的驱动方法还包括通 过扫描线 36向中心像素电极 32a和周边像素电极 32b提供扫描信号。 扫描信 号用于导通与像素电极 32相对应的薄膜晶体管。
如上文中所述， 在本发明实施例所提供的阵列基板 30中， 像素区域内设 置有中心薄膜晶体管 35和周边薄膜晶体管 34, 每组数据线 33都包括第一数 据线 33a和第二数据线 33b, 中心薄膜晶体管 35的漏极与中心像素电极 32a 电连接， 中心薄膜晶体管 35的源极与第一数据线 33a电连接， 周边薄膜晶体 管 34的漏极与周边像素电极 32b电连接， 周边像素电极 32b的源极与所述第 二数据线 33b 电连接。 因此， 本发明实施例所提供的所述驱动方法还可以包 括通过第一数据线 33a向中心像素电极 32a输出第一电压 通过第二数据 线 33b向周边像素电极 32b输出第二电压 V2,通过扫描线 36控制中心薄膜晶 体管 35和周边薄膜晶体管 34的导通和截止。
在本发明实施例中， 栅极驱动器 40向扫描线 36提供扫描信号。 在本发 明的一种实施方式中， 阵列基板 30包括周边薄膜晶体管 34和中心薄膜晶体 管 35 ,在本发明实施例所提供的驱动方法还包括，通过扫描线 36向周边薄膜 晶体管 34和中心薄膜晶体管 35提供扫描信号， 以控制周边薄膜晶体管 34和 中心薄膜晶体管 35的导通和截止。 在本发明实施例中位于同一像素区域内的 周边薄膜晶体管 34和中心薄膜晶体管 35的状态是相同的， 即， 同一像素区 域内的周边薄膜晶体管 34和中心薄膜晶体管 35同时导通， 同时截止。 因此， 所述驱动方法还包括在每个所述像素区域中， 利用同一条扫描线
36控制中心薄膜晶体管 35和周边薄膜晶体管 34的导通和截止。
虽然在本发明实施例中以电致变色显示器为例介绍了本发明实施例所述 的阵列基板以及该阵列基板的驱动方法， 但是， 本领域技术人员应当理解的 是， 所述阵列基板并不限于应用于电致变色显示器， 而是还可以应用于其他 显示装置。 例如， 所述阵列基板还可以应用于液晶显示装置等。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、一种阵列基板，该阵列基板的显示区域内包括多组数据线和多条扫描 线， 所述多组数据线和所述多条扫描线相交， 将所述显示区域划分为多个像 素区域， 每个所述像素区域内都设置有像素电极， 该像素电极与所述数据线 电连接， 其中， 所述像素电极包括中心像素电极和与该中心像素电极相邻且 电性隔离的周边像素电极。
2、根据权利要求 1所述的阵列基板， 其中， 所述像素区域内设置有中心 薄膜晶体管和周边薄膜晶体管， 每组所述数据线都包括第一数据线和第二数 据线， 所述中心薄膜晶体管的漏极与所述中心像素电极电连接， 所述中心薄 膜晶体管的源极与所述第一数据线电连接， 所述周边薄膜晶体管的漏极与所 述周边像素电极电连接，所述周边像素电极的源极与所述第二数据线电连接。
3、 根据权利要求 2所述的阵列基板， 其中， 在每个所述像素区域中， 所 述中心薄膜晶体管和所述周边薄膜晶体管与同一条所述扫描线电连接。
4、根据权利要求 1至 3中任意一项所述的阵列基板， 其中， 所述周边像 素电极包括多个像素电极条， 多个所述像素电极条中的一个上形成有缺口， 所述中心像素电极设置在所述多个像素电极条围成的空间内， 且所述中心薄 膜晶体管的漏极穿过所述缺口与所述中心像素电极电连接。
5、根据权利要求 4所述的阵列基板， 其中，每个所述像素电极条的宽度 为所述中心像素电极的宽度的 1/10至 1/5。
6、 一种电致变色显示器， 其中， 该电致变色显示器包括权利要求 1至 5 中任意一项所述的阵列基板。
7、根据权利要求 6所述的电致变色显示器， 其中， 该电致变色显示器包 括栅极驱动器和源极驱动器， 所述栅极驱动器与多条所述扫描线电连接， 所 述源极驱动器与所述多组数据线电连接。
8、根据权利要求 7所述的电致变色显示器， 其中， 所述电致变色显示器 还包括电压转换器， 所述电压转换器的第一端与所述源极驱动器电连接， 所 述电压转换器的第二端与所述中心像素电极电连接， 所述电压转换器的第三 端与所述周边像素电极电连接。
9、根据权利要求 8所述的电致变色显示器， 其中， 所述电致变色显示器 还包括用于发出控制信号的发射器， 所述电压转换器还具有与所述发射器电 连接的第四端。
10、 一种阵列基板的驱动方法， 所述阵列基的显示区域内包括多组数据 线和多条扫描线， 所述多组数据线和所述多条扫描线相交， 将所述显示区域 划分为多个像素区域， 每个所述像素区域内都设置有像素电极， 该像素电极 与所述数据线电连接， 其中， 所述像素电极包括中心像素电极和与该中心像 素电极相邻且电性隔离的周边像素电极， 所述驱动方法包括通过所述数据线 向所述中心像素电极输出第一电压， 并且通过所述数据线向所述周边像素电 极输出第二电压， 所述第一电压的极性与所述第二电压的极性相反。
11、根据权利要求 10所述的驱动方法， 其中， 所述第一电压的绝对值不 小于所述第二电压的绝对值。
12、根据权利要求 10所述的驱动方法， 其中， 所述驱动方法包括先输出 所述第一电压后输出所述第二电压。
13、根据权利要求 12所述的驱动方法， 其中， 所述第二电压比所述第一 电压落后 0.05s至 0.1s。
14、 根据权利要求 10至 13中任意一项所述的驱动方法， 其中， 所述像 素区域内设置有中心薄膜晶体管和周边薄膜晶体管， 每组所述数据线都包括 第一数据线和第二数据线， 所述中心薄膜晶体管的漏极与所述中心像素电极 电连接， 所述中心薄膜晶体管的源极与所述第一数据线电连接， 所述周边薄 膜晶体管的漏极与所述周边像素电极电连接， 所述周边像素电极的源极与所 述第二数据线电连接， 所述驱动方法包括通过所述第一数据线向所述中心像 素电极输出第一电压， 通过所述第二数据线向所述周边像素电极输出第二电 压， 通过扫描线控制所述中心薄膜晶体管和所述周边薄膜晶体管的导通和截 止。
15、根据权利要求 14所述的驱动方法， 其中， 所述驱动方法包括在每个 所述像素区域中， 利用同一条所述扫描线控制所述中心薄膜晶体管和所述周 边薄膜晶体管的导通和截止。
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