WO2015032210A1 - 阵列基板及其驱动方法、柔性显示器件及电子设备 - Google Patents

阵列基板及其驱动方法、柔性显示器件及电子设备 Download PDF

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Publication number
WO2015032210A1
WO2015032210A1 PCT/CN2014/076080 CN2014076080W WO2015032210A1 WO 2015032210 A1 WO2015032210 A1 WO 2015032210A1 CN 2014076080 W CN2014076080 W CN 2014076080W WO 2015032210 A1 WO2015032210 A1 WO 2015032210A1
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Prior art keywords
data
data line
driving
data lines
array substrate
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Ceased
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English (en)
French (fr)
Inventor
秦纬
周伟峰
苏京
乔勇
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US14/407,000 priority Critical patent/US9514694B2/en
Publication of WO2015032210A1 publication Critical patent/WO2015032210A1/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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • 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
    • 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
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only

Definitions

  • the invention relates to a flexible display technology, in particular to an array substrate and a driving method thereof, and a flexible display Display devices and electronic devices.
  • Flexible displays are a type of flexible substrate that can be made to be ultra-thin. Large, flexible display device or display technology. The main features of flexible display can be used in three words To describe: thin, light, soft.
  • the prior art flexible substrate is generally divided into two regions: a part is a non-bending area, and a part is It is a bendable area.
  • 1 is a schematic structural view of a prior art flexible array substrate, as shown in FIG. Wherein, on the array substrate 1, the position of the driving unit 4 is set as a non-bendable area, and the driving unit 4 is connected to the data line 2 and the gate line 3 to drive the thin film transistor TFT5 provided in the panel; the rest The area is a bendable area.
  • FIG. 2 is a schematic diagram of a data driving signal of a prior art flexible array substrate, as shown in FIG. 2,
  • the driving signal corresponding to each of the data lines includes the same number of sub-signals (ie, in FIG. 2 Pulse).
  • This method is only applicable to the case where the number of TFTs connected to each data line is the same. Therefore there is no flexibility.
  • An object of the embodiments of the present invention is to provide an array substrate and a driving method thereof, and a flexible display Parts and electronic devices to increase the flexibility of array substrate drive.
  • an embodiment of the present invention provides an array substrate, including a flexible substrate. And an array layer formed on the flexible substrate, the array layer comprising:
  • a thin film transistor disposed in the sub-pixel region, connected to a corresponding data line and a gate line;
  • the array substrate further includes:
  • a driving unit configured to output a data driving signal to the connected data line
  • the plurality of data lines comprise a first data line connected to the first number of thin film transistors And a second data line connected to the second number of thin film transistors, the driving unit within one frame time
  • the number of sub-signals in the data driving signal outputted to the first data line is the first number
  • the driving list The number of sub-signals in the data driving signal output to the second data line in one frame time is the second number the amount.
  • the gate lines and the data lines are perpendicular to each other. .
  • the prior data lines are connected
  • the number of thin film transistors connected is smaller than the number of thin film transistors connected to the subsequent data lines, and the other Among the divided data lines, the number of thin film transistors connected to the preceding data lines is smaller than that of the subsequent data lines.
  • the number of thin film transistors connected is smaller than that of the subsequent data lines.
  • the data line is connected to the transistor in the part of the data line
  • the number increases by the first difference value, and in another part of the data line, the number of transistors connected to the data line The value is decreased by the second difference value.
  • the first equal difference value is equal to the second equal value.
  • the above array substrate wherein the flexible substrate is divided into a bendable display area and is not bendable
  • the driving unit is disposed in the peripheral area.
  • the driving unit includes a correspondingly disposed on the flexible substrate a first driving unit and a second driving unit on opposite sides, the first driving unit and the second
  • the drive unit is connected to the data line and the gate line in the principle of a nearby connection.
  • each of the first driving unit and the second driving unit may Each includes a data driving unit for driving the data lines separately and a gate driving for separately driving the gate lines Moving unit.
  • an embodiment of the present invention further provides a flexible display device. Any of the above array substrates is included.
  • an embodiment of the present invention further provides an electronic device, including The above flexible display device.
  • the embodiment of the present invention further provides an array substrate.
  • a driving method for driving the unit comprising:
  • the driving unit generates a data driving signal corresponding to the first data line
  • the driving unit outputs the data driving signal to the first data line
  • the driving unit outputs a signal neutron signal to the first data line within one frame time
  • the number is the same as the number of thin film transistor connections connected to the first data line.
  • the data line is divided into first according to the arrangement direction of the data lines a portion and a second portion; according to the direction in which the data lines are arranged, in the data line of the first portion,
  • the number of thin film transistors connected to the previous data line is smaller than the thin film transistor connected to the subsequent data line
  • the number of thin film transistors connected to the previous data line in the second part of the data line is less than
  • the data driving signal is also divided into two parts, a drive signal corresponding to a data line of the first portion, corresponding to a drive signal of the previous data line
  • the number of sub-signals is smaller than the number of sub-signals corresponding to the drive signals of the subsequent data lines, corresponding to In the driving signal of the data line of the second part, the sub-signal corresponding to the driving signal of the preceding data line
  • the number is greater than the number of sub-signals corresponding to the drive signals of the subsequent data lines.
  • the driving unit is determined according to the number of thin film transistors connected by the data lines.
  • the number of sub-signals in the data drive signal can satisfy the number of thin film transistors connected to the data lines.
  • FIG. 1 is a schematic structural view of a prior art flexible array substrate
  • FIG. 2 is a schematic diagram showing data driving signals of a prior art flexible array substrate
  • FIG. 3 is a schematic structural view of a flexible array substrate according to an embodiment of the present invention.
  • FIG. 4 shows a thin film transistor connected to different data lines in a flexible array substrate according to an embodiment of the present invention; a different schematic diagram of the number;
  • 5a-5c are schematic diagrams showing different numbers of thin film transistors connected by different data lines
  • 6a-6b are schematic views showing the angle between the side of the signal transmission line and the flexible substrate
  • FIG. 7 is a schematic diagram showing the data line of the flexible array substrate divided into two parts according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of comparison of effects of an array substrate according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of an array substrate provided with two driving units according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a nearby connection when two driving units are provided according to an embodiment of the present invention.
  • FIG. 11 is a timing diagram of a data driving signal according to an embodiment of the present invention.
  • the driving unit determines the data driving signal neutron signal according to the number of thin film transistors connected by the data line The number of array substrates capable of meeting the number of thin film transistors connected to the data lines Seeking for better flexibility.
  • first and second are comparing values.
  • the relationship is not equal, the mutual positional relationship is relative, not specific.
  • the first number is not equal to the second quantity; for example, one data line A can be called the first data line, and the other number is called According to the line B is the second data line, in contrast, the data line B can also be referred to as the first data line, and the number The data line A may be referred to as a second data line; in addition, the first data line (or first gate line) may refer to One of the multiple data lines (or the gate line) may also refer to the same feature in multiple data lines. (such as connecting the same number of thin film transistors or the same length) and other data lines with the same function (or Grid line).
  • An embodiment of the present invention provides an array substrate, as shown in FIG. 3, including a flexible substrate 6 and An array layer formed on the flexible substrate, the array layer comprising:
  • Pixel area a plurality of data lines 2 and a plurality of gate lines 3 intersecting each other to form a plurality of sub-substrates on the flexible substrate 6.
  • a thin film transistor disposed in the sub-pixel region, connected to the corresponding data line 2 and the gate line 3;
  • the array substrate further includes:
  • a driving unit (not shown) for outputting a data driving signal to the connected data line;
  • the plurality of data lines comprise a first data line connected to the first number of thin film transistors And a second data line connected to the second number of thin film transistors, the driving unit within one frame time
  • the number of sub-signals in the data driving signal outputted to the first data line is the first number
  • the driving list The number of sub-signals in the data driving signal output to the second data line in one frame time is the second number the amount.
  • the connected data line outputs the data drive signal, but does not indicate that the drive unit can only drive the number separately. According to the line, the driving unit can also drive the data line and the gate line at the same time, which will be described in detail later.
  • the sub-signal refers to the input of the drive module to the pixel through a TFT.
  • the signal of the electrode refers to the input of the drive module to the pixel through a TFT.
  • the above sub-signal will be described by taking the case shown in FIG. 4 as an example.
  • the top data line 41 in the figure Connected to 7 TFTs, and the middle data line 42 is connected to 8 TFTs, and the lowermost data line 43 Connected to 9 TFTs, at this time, the array substrate according to the embodiment of the present invention is driven in one frame time.
  • the number of sub-signals of the data driving signal outputted by the moving module to the uppermost data line 41 is seven.
  • the number of sub-signals of the data driving signal outputted by the moving module to the intermediate data line 42 is eight, driving The number of sub-signal signals in the data drive signal output by the module to the lowermost data line 43 is nine.
  • the sub-signal is further described below from the perspective of the driver module.
  • the uppermost data line 41 is connected to seven TFTs, and the middle
  • the data line 42 is connected to 8 TFTs, and the lowermost data line 43 is connected to 9 TFTs;
  • 411 is connected to one TFT, gate line 412 is connected to two TFTs, and gate line 413 is connected to three TFTs.
  • the gate line is scanned line by line, and the driving module is at time t1.
  • the number of sub-signals output by the driver module is one; similarly, at t2
  • the number of sub-signals that the driving module inputs the gate driving signal to the gate line 412 is two.
  • the driving module inputs the data driving signal to the data lines 42, 43 and the number of sub-signals output by the driving module For 2; and so on...
  • the driving unit is determined according to the number of thin film transistors connected by the data lines.
  • the number of sub-signals in the data drive signal can satisfy the number of thin film transistors connected to the data lines.
  • the same array substrate drive requirements have better flexibility than the prior art.
  • the number of thin film transistors forming different data line connections is not Both are caused by the difference in the length of the array substrate in the direction in which the data lines are arranged.
  • the data lines are arranged in parallel, but any one of the data lines is opposite to the soft line.
  • the angle of any one side of the substrate is not equal to 90°, although the shape of the array substrate is regular,
  • the data lines are arranged diagonally with respect to the flexible substrate, and the length of the data lines is different at this time, and thus The case where the number of thin film transistors connected to different data lines is different.
  • the thin film transistor and the data line and the gate line are simplified. Structural relationship; in general, the gate of the thin film transistor is connected to the gate line, and the source of the thin film transistor (or drain) connected to the data line, the drain (or source) of the thin film transistor and the pixel electrode (not shown) Connect); since the fabrication process of the drain and source of the thin film transistor is basically the same, it can be in the name Interchangeable.
  • the specific arrangement of the gate lines is not limited, but in order to manufacture more Conveniently, in order to provide more sub-pixels on the substrate, in a specific embodiment of the present invention, as shown in the figure As shown in 3, the gate lines and the data lines are perpendicular to each other.
  • the angle at which the data line is inclined is ideally, the data line and the flexible substrate
  • the angle between one side is between 30° and 60°.
  • an angle between the data line and one side of the flexible substrate It is 45°.
  • the definition of the angle between the data line and one side of the flexible substrate as follows:
  • a is assumed to be a side of the flexible substrate, and the signal transmission lines b and a are clipped.
  • the angle is defined as Theta1 in Fig. 6a, and in Fig. 6b, the angle between the signal transmission lines b and a is defined as a graph.
  • Theta2 in 6b when a and b are perpendicular, then the angle between a and b is positioned at 90°, while a and b When parallel or coincident, the angle between a and b is positioned at 0°.
  • the angle ⁇ between the data line 2/gate line 3 and the side of the flexible substrate is 45°.
  • the data line is divided into a first portion 71 and a second portion 72, a data line located at an upper left half of the flexible substrate is a first portion located at a lower right of the flexible substrate The half of the data line is the second part;
  • the prior The number of thin film transistors connected to the data line 2 is smaller than that of the thin film transistors connected to the rear data line 2 Quantity; the data line included in the second part 72, in the order from top to bottom, the previous number The number of thin film transistors connected according to the line 2 is larger than the number of thin film transistors connected to the subsequent data line 2. the amount.
  • the number of transistors connected to the data lines increases first, and then Reduced.
  • the number of transistors connected to the data lines is firstly equal. P1 is increased, and then the value of P2 is decreased according to the difference value.
  • the difference value is equal to P1 and P2, that is, the number of transistors connected to the data line is relatively
  • the above data lines and gate lines are vertical, but
  • the manner in which the sides are arranged obliquely with respect to the side of the flexible substrate is advantageous for improving the bending property of the substrate. described as follows.
  • 81 is a side of the prior art perpendicular to the flexible substrate.
  • a signal transmission line disposed, and 82 is an oblique side of the side of the flexible substrate relative to the flexible substrate.
  • the second signal transmission line is arranged, as can be seen from the figure, since the length of the second signal transmission line 82 is large
  • the length of the first signal transmission line 81 is the second signal in the case where the substrate is bent as shown in FIG.
  • the transmission line 82 has a radius of curvature R2 larger than the radius of curvature R1 of the first signal transmission line 81, also That is, the degree of bending of the second signal transmission line 82 is greater than the degree of bending of the first signal transmission line 81. low.
  • the radius of curvature of the second signal transmission line 82 is approximately the curve of the second signal transmission line 81.
  • the rate radius is about 1.4 times.
  • the embodiment of the present invention provides signal transmission by obliquely speaking with respect to one side of the flexible substrate.
  • the wire reduces the degree of bending of the signal transmission line under the condition that the substrate is bent, thereby improving the bending of the substrate Music performance.
  • the second signal transmission line and the first signal transmission wire of the prior art are used.
  • the same quality and the same effect are introduced as an example, but not limited thereto.
  • the flexible substrate is divided into a bendable display area and is not The bent peripheral area, the driving unit is disposed in the peripheral area.
  • the unit is disposed in the peripheral area to improve protection of the driving unit.
  • the driving unit may be one, but may also be two Or more than two. Taking two driving modules as an example, corresponding to the opposite of the flexible substrate Two side edges, two drive units are connected to the data line and the gate line on the principle of the nearest connection.
  • the array substrate of the two driving units is as shown in FIG. 9, and it can be found that the two driving units are close to each other.
  • the principle of connection is connected to the data lines and the gate lines.
  • the above driving unit can drive the data line and the gate line at the same time, but should It is understood that the driving unit in the embodiment of the present invention may also include a separate driving data line. a data driving unit and a gate driving unit for separately driving the gate line, the gate driving unit may be The independent chip can also be integrated into the array substrate by GOA (Gate on Array).
  • GOA Gate on Array
  • the data line 2 is connected to the left drive list through the first connection line 101. It is also possible to connect to the right drive unit via the second connection line 102, but obviously, the first The length d1 of the connecting line is obviously smaller than the length d2 of the second connecting line 102, and therefore, according to the nearest The connection principle, the data line 2 in Figure 10 is driven by the drive unit on the left.
  • the gate line 3 is connected to the right drive unit through the third connection line 103. It is also possible to connect to the left drive unit via the fourth connection line 104, but obviously, the third connection The length d3 of the line is obviously smaller than the length d4 of the fourth connecting line 104, so the connection is in accordance with the nearest one. In principle, the gate line 3 in FIG. 10 is driven by the drive unit on the right.
  • connection distance of the front connected drive unit will be less than or equal to its minimum connection distance to another drive unit from.
  • this connection method greatly reduces the different signal transmission lines and drives.
  • the difference in the length of the connecting line between the moving units reduces the transmission of signals sent by the driving unit to no
  • the transmission delay between the same signal transmission line improves system performance.
  • an embodiment of the present invention further provides a flexible display device. Any of the above array substrates is included.
  • the flexible display device can be: a liquid crystal panel, an electronic paper, a liquid crystal television, a liquid crystal display, A product or component with any display function, such as a digital photo frame, mobile phone, or tablet.
  • an embodiment of the present invention further provides an electronic device, including The above flexible display device.
  • the embodiment of the present invention further provides an array substrate.
  • a driving method for driving the unit comprising:
  • the driving unit generates a data driving signal corresponding to the first data line
  • the driving unit outputs the data driving signal to the first data line
  • the number of sub-signals in the data driving signal is connected to a thin film transistor connected to the first data line The number is the same.
  • the data line is divided into the first part according to the direction in which the data lines are arranged. And the second part; according to the arrangement direction of the data lines, wherein the data line of the first part is prior
  • the number of thin film transistors connected to the data line is smaller than the number of thin film transistors connected to the subsequent data line
  • Quantity, in the second part of the data line, the number of thin film transistors connected to the previous data line is less than
  • the data driving signal is also divided into two parts, corresponding In the driving signal of the data line of the first part, the sub-letter corresponding to the driving signal of the previous data line
  • the number of the numbers is smaller than the number of sub-signals corresponding to the driving signals of the subsequent data lines, corresponding to the second Among the driving signals of the partial data lines, the number of sub-signals corresponding to the driving signals of the preceding data lines
  • the amount is greater than the number of sub-signals corresponding to the drive signals of the subsequent data lines.
  • the number of sub-signals of the data driving signal increases first, then decreases small.

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Abstract

一种阵列基板及其驱动方法、柔性显示器件及电子设备。阵列基板包括柔性基板（6）和在柔性基板上形成的阵列层，阵列层包括：多条数据线（41，42，43）和多条栅线（411，412），相互交叉在柔性基板（6）上形成多个子像素区；设置于子像素区中的薄膜晶体管，与对应的数据线（41，42，43）和栅线（411，412）连接；阵列基板还包括驱动单元，用于向连接的数据线（41，42，43）输出数据驱动信号。多条数据线（41，42，43）包括与第一数量的薄膜晶体管连接的第一数据线和与第二数量的薄膜晶体管连接的第二数据线，驱动单元向第一数据线输出的数据驱动信号中子信号的数量为第一数量，驱动单元向第二数据线输出的数据驱动信号中子信号的数量为第二数量，从而提高了驱动的灵活性。

Description

阵列基板及其驱动方法、柔性显示器件及电子设备 技术领域
本发明涉及柔性显示技术，特别是一种阵列基板及其驱动方法、柔性显 示器件及电子设备。
背景技术
柔板显示(Flexible displays)是指一类使用柔性基板，可以制造成超薄、 超大、可弯曲的显示器件或显示技术。柔性显示的最主要特点可以用三个字 来描述：薄、轻、柔。
现有技术的柔性基板一般分为两个区域：一部分是非弯折区域，一部分 是可弯折区域。图1为现有技术的柔性阵列基板的结构示意图，如图1所示， 其中，在阵列基板1上，设置驱动单元4的位置为不可弯折区，该驱动单元 4与数据线2以及栅线3连接，来驱动面板中设置的薄膜晶体管TFT5；其余 区域为可弯折区。
如图1所示，数据线2以及栅线3是以垂直于柔性基板的一个侧边的方 式而设置的。因此，这种情况下每一条数据线对应连接的TFT的数量完全相 同。图2为现有技术的柔性阵列基板的数据驱动信号的示意图，如图2所示， 其中每一条数据线所对应的驱动信号中，包括相同数量的子信号(即图2中 的脉冲)。
而这种方式仅适用于每一条数据线对应连接的TFT的数量相同的情况， 因此不具备灵活性。
发明内容
本发明实施例的目的在于提供一种阵列基板及其驱动方法、柔性显示器 件及电子设备，提高阵列基板驱动的灵活性。
为了实现上述目的，本发明实施例提供了一种阵列基板，包括柔性基板 和在柔性基板上形成的阵列层，所述阵列层包括：
多条数据线和多条栅线，相互交叉在所述柔性基板上形成多个子像素区；
设置于所述子像素区中的薄膜晶体管，与对应的数据线和栅线连接；
所述阵列基板还包括：
驱动单元，用于向连接的数据线输出数据驱动信号；
其中，所述多条数据线包括与第一数量的薄膜晶体管连接的第一数据线 和与第二数量的薄膜晶体管连接的第二数据线，所述驱动单元在一帧时间内 向第一数据线输出的数据驱动信号中子信号的数量为第一数量，所述驱动单 元在一帧时间内向第二数据线输出的数据驱动信号中子信号的数量为第二数 量。
上述的阵列基板，其中，所述数据线平行排列，且任意一条数据线相对 于所述柔性基板的任意一个侧边的夹角不等于90°。
上述的阵列基板，其中，所述栅线和数据线相互垂直。。
上述的阵列基板，其中，所述数据线与所述柔性基板的一个侧边的夹角 在30°到60°之间。
上述的阵列基板，其中，所述数据线与所述柔性基板的一个侧边的夹角 为45°。
上述的阵列基板，其中，按照所述数据线的排列方向，所述数据线分为 两个部分；
按照所述数据线的排列方向，其中一部分的数据线中，在先的数据线连 接的薄膜晶体管的数量小于在后的数据线连接的薄膜晶体管的数量，另一部 分的数据线中，在先的数据线连接的薄膜晶体管的数量小于在后的数据线连 接的薄膜晶体管的数量。
上述的阵列基板中，其中在所述一部分数据线中，数据线连接的晶体管 数量以第一等差数值增大，在另一部分数据线中，数据线连接的晶体管数量 以第二等差数值减小。优选地，所述第一等差数值等于所述第二等差数值。
上述的阵列基板，其中，所述柔性基板划分为可弯折的显示区和不可弯 折的外围区，所述驱动单元设置于所述外围区。
上述的阵列基板，其中，所述驱动单元包括对应设置于所述柔性基板的 相对的两个侧边的第一驱动单元和第二驱动单元，所述第一驱动单元和第二 驱动单元以就近连接的原则与所述数据线和栅线连接。
上述的阵列基板中，所述第一驱动单元和第二驱动单元中的每一个可以 分别包括单独用于驱动数据线的数据驱动单元和单独用于驱动栅线的栅极驱 动单元。
为了更好的实现上述目的，本发明实施例还提供了一种柔性显示器件， 包括上述任意的阵列基板。
为了更好的实现上述目的，本发明实施例还提供了一种电子设备，包括 上述的柔性显示器件。
为了更好的实现上述目的，本发明实施例还提供了一种上述阵列基板的 驱动方法，用于驱动单元，所述驱动方法包括：
驱动单元生成与第一数据线对应的数据驱动信号；
驱动单元输出所述数据驱动信号到第一数据线；
所述驱动单元在一帧时间内向第一数据线输出的数据驱动信号中子信号 的数量与第一数据线连接的薄膜晶体管连接的数量相同。
上述的驱动方法中，按照所述数据线的排列方向，所述数据线分为第一 部分和第二部分；按照所述数据线的排列方向，其中第一部分的数据线中， 在先的数据线连接的薄膜晶体管的数量小于在后的数据线连接的薄膜晶体管 的数量，第二部分的数据线中，在先的数据线连接的薄膜晶体管的数量小于 在后的数据线连接的薄膜晶体管的数量，所述数据驱动信号也分为两部分， 对应于第一部分的数据线的驱动信号中，对应于在先的数据线的驱动信号的 子信号的数量小于对应于在后的数据线的驱动信号的子信号的数量，对应于 第二部分的数据线的驱动信号中，对应于在先的数据线的驱动信号的子信号 的数量大于对应于在后的数据线的驱动信号的子信号的数量。
本发明实施例至少具有如下有益效果：
本发明实施例中，驱动单元根据数据线连接的薄膜晶体管的数量来决定 数据驱动信号中子信号的数量，能够满足数据线连接的薄膜晶体管的数量不 同的阵列基板的驱动需求，具有更好的灵活性。
附图说明
图1表示现有技术的柔性阵列基板的结构示意图；
图2表示现有技术的柔性阵列基板的数据驱动信号的示意图；
图3表示本发明实施例的柔性阵列基板的结构示意图；
图4表示本发明实施例的柔性阵列基板中不同数据线连接的薄膜晶体管 的数量不同的示意图；
图5a-5c造成不同数据线连接的薄膜晶体管的数量不同的示意图；
图6a-6b表示定义信号传输线和柔性基板的侧边的夹角的示意图；
图7表示本发明实施例的柔性阵列基板的数据线划分为两部分的示意图；
图8为本发明实施例的阵列基板的效果比较示意图；
图9为本发明实施例的设置有两个驱动单元的阵列基板的结构示意图；
图10为本发明实施例的设置有两个驱动单元时就近连接的示意图；
图11为本发明实施例的数据驱动信号的时序示意图。
具体实施方式
本发明实施例的阵列基板及其驱动方法、柔性显示器件及电子设备中， 驱动单元根据数据线连接的薄膜晶体管的数量来决定数据驱动信号中子信号 的数量，能够满足数据线连接的薄膜晶体管的数量不同的阵列基板的驱动需 求，具有更好的灵活性。
可以理解的是，在本发明具体实施例中，“第一”和“第二”在比较数值 关系时表示不相等，在相互位置关系是相对而言，并非特指。例如：第一数 量不等于第二数量；例如可以称一条数据线A为第一数据线，而称另一条数 据线B为第二数据线，相对而言，数据线B也可以被称为第一数据线，而数 据线A可以被称为第二数据线；此外，第一数据线(或第一栅线)可以是指 多条数据线中的一条数据线(或栅线)，也可以指多条数据线中具有相同特征 (如连接相同数量薄膜晶体管或长度相同)等功能作用基本相同的数据线(或 栅线)。
本发明实施例提供了一种阵列基板，如图3所示，包括柔性基板6和在 柔性基板上形成的阵列层，所述阵列层包括：
多条数据线2和多条栅线3，相互交叉在所述柔性基板6上形成多个子 像素区；
设置于所述子像素区中的薄膜晶体管，与对应的数据线2和栅线3连接；
所述阵列基板还包括：
驱动单元(图中未示出)，用于向连接的数据线输出数据驱动信号；
其中，所述多条数据线包括与第一数量的薄膜晶体管连接的第一数据线 和与第二数量的薄膜晶体管连接的第二数据线，所述驱动单元在一帧时间内 向第一数据线输出的数据驱动信号中子信号的数量为第一数量，所述驱动单 元在一帧时间内向第二数据线输出的数据驱动信号中子信号的数量为第二数 量。
应当理解的是，在本发明的具体实施例中，虽然上述的驱动单元用于向 连接的数据线输出数据驱动信号，但并不表明该驱动单元就只能单独驱动数 据线，该驱动单元也能同时驱动数据线和栅线，这将在后面详细说明。
在此，应该说明的是，子信号指的是驱动模块通过一个TFT输入到像素 电极的信号。
以图4所示的情况为例对上述子信号进行说明。图中最上方的数据线41 与7个TFT连接，而中间的数据线42与8个TFT连接，最下方的数据线43 与9个TFT连接，此时，根据本发明实施例的阵列基板，在一帧时间内，驱 动模块向最上方的数据线41输出的数据驱动信号中子信号的数量为7个，驱 动模块向中间的数据线42输出的数据驱动信号中子信号的数量为8个，驱动 模块向最下方的数据线43输出的数据驱动信号中子信号的数量为9个。
下面从驱动模块的角度来进一步描述子信号如下。
以图4所示的情况为例，最上方的数据线41与7个TFT连接，而中间 的数据线42与8个TFT连接，最下方的数据线43与9个TFT连接；栅线 411与1个TFT连接，栅线412与2个TFT连接，栅线413与3个TFT连接。 此时，根据本发明实施例的阵列基板，栅线逐行扫描，在t1时间，驱动模块 向栅线411输入栅极驱动信号，打开一个薄膜晶体管，此时驱动模块向数据 线43输入数据驱动信号，则驱动模块输出的子信号数量为1个；同理，在t2 时间，驱动模块向栅线412输入栅极驱动信号的子信号的数量为2个，此时 驱动模块向数据线42、43输入数据驱动信号，则驱动模块输出的子信号数量 为2个；以此类推……。
本发明实施例中，驱动单元根据数据线连接的薄膜晶体管的数量来决定 数据驱动信号中子信号的数量，能够满足数据线连接的薄膜晶体管的数量不 同的阵列基板的驱动需求，相对于现有技术具有更好的灵活性。
在本发明的具体实施例中，形成不同数据线连接的薄膜晶体管的数量不 同都是由于在数据线的排列方向上，阵列基板的长度不同造成的。
图5a-5c中，显示了不同形状的阵列基板造成不同数据线连接的薄膜晶 体管的数量不同的示意图。其中，不同形状的阵列基板上的箭头所示的方向 为数据线的延伸方向，而数据线的排列方向为与箭头所示的方向相垂直的方 向，因此会出现每条数据线对应的TFT的数量不同。
而图3-图4则为另一种情况。
如图3和图4所示，数据线平行排列，但任意一条数据线相对于所述柔 性基板的任意一个侧边的夹角不等于90°，虽然阵列基板形状规则，但由于 数据线相对于柔性基板斜向排列，此时就会出现数据线的长度不同，进而导 致不同数据线连接的薄膜晶体管的数量不同的情况。
可以理解的是，本发明实施例中是简化了薄膜晶体管与数据线、栅线的 结构关系；一般情况下，薄膜晶体管的栅极与栅线连接，薄膜晶体管的源极 (或漏极)与数据线连接，薄膜晶体管的漏极(或源极)与像素电极(未示 出)连接；由于薄膜晶体管的漏极和源极的制作工艺基本相同，可以在名称 上互换。
在本发明的具体实施例中并不限定栅线的具体排布情形，但为了制造更 加方便，也为了在基板上设置更多的子像素，在本发明具体实施例中，如图 3所示，所述栅线和数据线相互垂直。
而数据线倾斜的角度比较理想的方式是，所述数据线与所述柔性基板的 一个侧边的夹角在30°到60°之间。
一种最优的实施方式中，所述数据线与所述柔性基板的一个侧边的夹角 为45°。
在本发明的具体实施例中，对数据线与柔性基板的一个侧边的夹角定义 如下：
定义数据线与柔性基板的侧边的夹角的范围为[0°，90°]，均以显示区 数据线和柔性基板侧边等效为直线(或线段)为例。
如图6a所示，假定a为柔性基板的一个侧边，则信号传输线b和a的夹 角定义为图6a中的Theta1，而图6b中，信号传输线b和a的夹角定义为图 6b中的Theta2，当a和b垂直时，则a和b的夹角定位为90°，而a和b 平行或重合时，a和b的夹角定位为0°。
如图3和图4所示，其中所有的数据线2/栅线3与柔性基板的任意一个 侧边的夹角都不等于90°，也就是说，数据线2/栅线3与柔性基板的任意一 个侧边的夹角Φ都满足如下的关系：0°＜Φ＜90°。
当然，考虑到在柔性基板上必须有足够的像素点，因此，如图3和图4 所示，该数据线2/栅线3与柔性基板的侧边的夹角Φ取45°。
如图7所示，在本发明的具体实施例中，按照所述数据线的排列方向， 以柔性基板的对角线73为界，所述数据线分为第一部分71和第二部分72， 位于所述柔性基板左上半部分的数据线为第一部分，位于所述柔性基板右下 半部分的数据线为第二部分；
其中第一部分71所包括的数据线中，按照从上到下的顺序来看，在先的 数据线2连接的薄膜晶体管的数量小于在后的数据线2连接的薄膜晶体管的 数量；第二部分72所包括的数据线中，按照从上到下的顺序来看，在先的数 据线2连接的薄膜晶体管的数量大于在后的数据线2连接的薄膜晶体管的数 量。
也就是说在数据线的排列方向上，数据线连接的晶体管数量先增大，后 减小。
优选的，数据线的排列方向上，数据线连接的晶体管数量先等差数值为 P1增大，后按照等差数值为P2减小。
进一步的，等差数值为P1与P2相等，即数据线连接的晶体管数量相对 对角线呈对称排列。例如P1＝P2＝2。
假定有2m条数据线，在数据线的排列方向上，依次连接的晶体管数量 为：1、3、5、…、2n-3、2n-1、2n-1、2n-3、…、5、3、1(1≤n≤m，n，m均 为正整数)，则对应的本发明实施例的数据驱动信号如图11所示。
从图11可以发现，在数据线的排列方向上，驱动单元发送的驱动信号包 括的子信号的数量先是增大，然后减小。
本发明实施例中，对于矩形的柔性基板，上述的数据线和栅线垂直，但 均相对于柔性基板的侧边斜向排列的方式有利于提高基板的弯曲性能，对此 说明如下。
本发明实施例提及的线与线之间的角度关系，长度，数量的比较关系等， 都是以在显示区域为例进行说明。
下面对本发明实施例的斜向布置的信号传输线的弯折说明如下。
如图8所示，假定图8中，81为现有技术的垂直于柔性基板的一个侧边 布置的信号传输线，而82为本发明实施例的相对于柔性基板的一个侧边斜向 布置的第二信号传输线，从图中可以发现，由于第二信号传输线82的长度大 于第一信号传输线81的长度，则在如图8所示的基板弯折情况下，第二信号 传输线82具有比第一信号传输线81的曲率半径R1更大的曲率半径R2，也 就是说，第二信号传输线82的弯曲程度比第一信号传输线81的弯曲程度要 低。
按照几何原理，如果第二信号传输线82相对于柔性基板的一个侧边的夹 角为45°，则第二信号传输线82的曲率半径大概是第二信号传输线81的曲 率半径的1.4倍左右。
因此，本发明实施例通过相对于柔性基板的一个侧边斜向设置信号传输 线，降低了基板弯折情况下，信号传输线的弯曲程度，因此改善了基板的弯 曲性能。
当然，本发明实施中以第二信号传输线与现有技术的第一信号传输线材 质相同，且作用相同(例如都作为数据线)为例进行介绍，但并不以此为限。
在本发明的具体实施例中，所述柔性基板划分为可弯折的显示区和不可 弯折的外围区，所述驱动单元设置于所述外围区。
由于外围区的强度较大，因此相对于显示区弯折的可能性较小，将驱动 单元设置于所述外围区能够提高对驱动单元的保护。
在本发明的具体实施例中，所述驱动单元可以是一个，但也可以是两个 或两个以上。以包括两个驱动模块为例，对应设置于所述柔性基板的相对的 两个侧边，两个驱动单元以就近连接的原则与所述数据线和栅线连接。
两个驱动单元的阵列基板如图9所示，可以发现，两个驱动单元以就近 连接的原则与所述数据线和栅线连接。
在上述的实施例中，上述的驱动单元能够同时驱动数据线和栅线，但应 当理解的是，本发明实施例中的驱动单元也可以包括单独用于驱动数据线的 数据驱动单元和单独用于驱动栅线的栅极驱动单元，该栅极驱动单元可以是 独立存在的芯片，也可以是通过GOA(Gate on Array)方式集成于阵列基板。
下面以图10中的数据线2和栅线3对就近连接原则解释如下。
如图10所示，数据线2有可能通过第一连接线101连接到左边的驱动单 元，也有可能通过第二连接线102连接到右边的驱动单元，但很明显，第一 连接线的长度d1很明显会小于第二连接线102的长度d2，因此，按照就近 连接原则，图10中的数据线2由左边的驱动单元进行驱动。
如图10所示，栅线3有可能通过第三连接线103连接到右边的驱动单元， 也有可能通过第四连接线104连接到左边的驱动单元，但很明显，第三连接 线的长度d3很明显会小于第四连接线104的长度d4，因此，按照就近连接 原则，图10中的栅线3由右边的驱动单元进行驱动。
也就是说，对于任意一条信号传输线而言，按照就近连接原则，其到当 前连接的驱动单元的连接距离会小于或等于其到另一驱动单元的最小连接距 离。
结合图9和图10所示，这种连接方式，大大降低了不同信号传输线与驱 动单元之间的连接线的长度差异，也就降低了驱动单元发送的信号传输到不 同信号传输线之间的传输时延，提高了系统性能。
为了更好的实现上述目的，本发明实施例还提供了一种柔性显示器件， 包括上述任意的阵列基板。
其中，阵列基板的结构以及工作原理同上述实施例，在此不再赘述。另 外，柔性显示器件其他部分的结构可以参考现有技术，对此本文不再详细描 述。该柔性显示器件可以为：液晶面板、电子纸、液晶电视、液晶显示器、 数码相框、手机、平板电脑等具有任何显示功能的产品或部件。
为了更好的实现上述目的，本发明实施例还提供了一种电子设备，包括 上述的柔性显示器件。
为了更好的实现上述目的，本发明实施例还提供了一种上述阵列基板的 驱动方法，用于驱动单元，所述驱动方法包括：
驱动单元生成与第一数据线对应的数据驱动信号；
驱动单元输出所述数据驱动信号到第一数据线；
所述数据驱动信号中子信号的数量与第一数据线连接的薄膜晶体管连接 的数量相同。
结合图7所示，按照所述数据线的排列方向，所述数据线分为第一部分 和第二部分；按照所述数据线的排列方向，其中第一部分的数据线中，在先 的数据线连接的薄膜晶体管的数量小于在后的数据线连接的薄膜晶体管的数 量，第二部分的数据线中，在先的数据线连接的薄膜晶体管的数量小于在后 的数据线连接的薄膜晶体管的数量，所述数据驱动信号也分为两部分，对应 于第一部分的数据线的驱动信号中，对应于在先的数据线的驱动信号的子信 号的数量小于对应于在后的数据线的驱动信号的子信号的数量，对应于第二 部分的数据线的驱动信号中，对应于在先的数据线的驱动信号的子信号的数 量大于对应于在后的数据线的驱动信号的子信号的数量。
也就是说，在时序关系上，数据驱动信号的子信号的数量先增大，后减 小。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普 通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润 饰，这些改进和润饰也应视本发明的保护范围。

Claims (15)

  1. 一种阵列基板，包括柔性基板和在所述柔性基板上形成的阵列层，其 特征在于，所述阵列层包括：
    多条数据线和多条栅线，相互交叉在所述柔性基板上形成多个子像素区；
    设置于所述子像素区中的薄膜晶体管，与对应的数据线和栅线连接；
    所述阵列基板还包括：
    驱动单元，用于向连接的数据线输出数据驱动信号；
    其中，所述多条数据线包括与第一数量的薄膜晶体管连接的第一数据线 和与第二数量的薄膜晶体管连接的第二数据线，所述驱动单元在一帧时间内 向第一数据线输出的数据驱动信号中子信号的数量为第一数量，所述驱动单 元在一帧时间内向第二数据线输出的数据驱动信号中子信号的数量为第二数 量。
  2. 根据权利要求1所述的阵列基板，其特征在于，所述数据线平行排列， 且任意一条数据线相对于所述柔性基板的任意一个侧边的夹角不等于90°。
  3. 根据权利要求2所述的阵列基板，其特征在于，所述栅线和数据线相 互垂直。
  4. 根据权利要求3所述的阵列基板，其特征在于，所述数据线与所述柔 性基板的一个侧边的夹角在30°到60°之间。
  5. 根据权利要求4所述的阵列基板，其特征在于，所述数据线与所述柔 性基板的一个侧边的夹角为45°。
  6. 根据权利要求2-5中任意一项所述的阵列基板，其特征在于：
    按照所述数据线的排列方向，所述数据线分为两个部分；
    按照所述数据线的排列方向，其中一部分的数据线中，在先的数据线连 接的薄膜晶体管的数量小于在后的数据线连接的薄膜晶体管的数量，另一部 分的数据线中，在先的数据线连接的薄膜晶体管的数量小于在后的数据线连 接的薄膜晶体管的数量。
  7. 根据权利要求6所述的阵列基板，其中在所述一部分数据线中，数据 线连接的晶体管数量以第一等差数值增大，在另一部分数据线中，数据线连 接的晶体管数量以第二等差数值减小。
  8. 根据权利要求7所述的阵列基板，其中所述第一等差数值等于所述第 二等差数值。
  9. 根据权利要求1-8中任意一项所述的阵列基板，其特征在于，所述柔 性基板划分为可弯折的显示区和不可弯折的外围区，所述驱动单元设置于所 述外围区。
  10. 根据权利要求1-9所述的阵列基板，其特征在于，所述驱动单元包括 对应设置于所述柔性基板的相对的两个侧边的第一驱动单元和第二驱动单元， 所述第一驱动单元和第二驱动单元以就近连接的原则与所述数据线和栅线连 接。
  11. 根据权利要求10所述的阵列基板，其特征在于，所述第一驱动单元 和第二驱动单元中的每一个分别包括单独用于驱动数据线的数据驱动单元和 单独用于驱动栅线的栅极驱动单元。
  12. 一种柔性显示器件，包括权利要求1-11中任意一项所述的阵列基板。
  13. 一种电子设备，包括权利要求12所述的柔性显示器件。
  14. 一种权利要求1-5中任意一项所述的阵列基板的驱动方法，用于驱动 单元，其特征在于，所述驱动方法包括：
    驱动单元生成与第一数据线对应的数据驱动信号；
    所述驱动单元输出所述数据驱动信号到第一数据线；
    所述驱动单元在一帧时间内向第一数据线输出的数据驱动信号中子信号 的数量与第一数据线连接的薄膜晶体管连接的数量相同。
  15. 根据权利要求14所述的阵列基板的驱动方法，其特征在于，按照所 述数据线的排列方向，所述数据线分为第一部分和第二部分；按照所述数据 线的排列方向，其中第一部分的数据线中，在先的数据线连接的薄膜晶体管 的数量小于在后的数据线连接的薄膜晶体管的数量，第二部分的数据线中， 在先的数据线连接的薄膜晶体管的数量小于在后的数据线连接的薄膜晶体管 的数量，所述数据驱动信号也分为两部分，对应于第一部分的数据线的驱动 信号中，对应于在先的数据线的驱动信号的子信号的数量小于对应于在后的 数据线的驱动信号的子信号的数量，对应于第二部分的数据线的驱动信号中， 对应于在先的数据线的驱动信号的子信号的数量大于对应于在后的数据线的 驱动信号的子信号的数量。
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