WO2019100419A1 - 可折叠显示面板及其驱动方法 - Google Patents

可折叠显示面板及其驱动方法 Download PDF

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Publication number
WO2019100419A1
WO2019100419A1 PCT/CN2017/113419 CN2017113419W WO2019100419A1 WO 2019100419 A1 WO2019100419 A1 WO 2019100419A1 CN 2017113419 W CN2017113419 W CN 2017113419W WO 2019100419 A1 WO2019100419 A1 WO 2019100419A1
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Prior art keywords
gate electrode
electrode driving
driving circuit
output
display panel
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Ceased
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PCT/CN2017/113419
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English (en)
French (fr)
Inventor
曾勉
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US15/737,560 priority Critical patent/US20190385517A1/en
Publication of WO2019100419A1 publication Critical patent/WO2019100419A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/03—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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • 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
    • G09G2300/0404—Matrix technologies
    • G09G2300/0408—Integration of the drivers onto the display substrate
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0232—Special driving of display border areas
    • 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
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0414—Vertical resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0442—Handling or displaying different aspect ratios, or changing the aspect ratio

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a foldable display panel and a driving method thereof.
  • FIG. 1 is a schematic view of an existing flexible foldable display panel that can be folded along a dotted line (actually not present) XL.
  • GOA Gate on Array
  • TFT Thin Film Transistor
  • the function of the GOA circuit mainly includes: providing a high level signal outputted by the previous GOA circuit to the next GOA circuit to turn on the next GOA circuit, thereby transmitting the clock signal to the scan line connected to the next GOA circuit, such as Figure 2 shows.
  • both CK and XCK represent clock signals
  • Vgh represents a high potential voltage
  • Vgl represents a low potential voltage.
  • the folding method is designed to fold up and down (as shown in Figure 3) or tri-fold.
  • the start signal of the GOA circuit generally starts from the first line, and generates a line-by-row output signal via the shift register circuit in the GOA circuit; or inputs the start signal from the last line, via the shift register in the GOA circuit.
  • the circuit generates an output signal that is shifted line by line, and controls the output signal to be forward-scanned or reverse-scanned by the forward scan control signal and the reverse scan control signal.
  • Such a design has a drawback in folding display: after the flexible display device is folded, the GOA signal will still open from the first line.
  • a foldable display panel comprising: a flexible substrate including a first display area and a second display area, the first display area and the second display area Between the two first gate electrode driving circuits, disposed on the flexible substrate and sequentially arranged on the side of the first display area, N is an integer; M second gate electrode driving circuits And disposed on the flexible substrate and sequentially arranged on a side of the second display area, where M is an integer, the N first gate electrode driving circuits and the M second gate electrode driving circuits are cascaded; M reset modules, the reset module being disposed in a corresponding second gate electrode driving circuit, wherein the reset module is configured to be externally input when folded between the first display area and the second display area The energy signal pulls down the output signal of the corresponding second gate electrode driving circuit to a low potential, so that the M second gate electrode driving circuits are all turned off.
  • the M reset modules are each connected to an enable signal generator, and when the first display area and the second display area are folded, the enable signal generator is triggered to generate the enable Can signal.
  • each reset module is connected to a corresponding one of the enable signal generators.
  • each enable signal generator is triggered to generate the enable. signal.
  • an i+1th first gate electrode driving circuit is connected to an output end of the ith first gate electrode driving circuit to receive the ith first gate The output signal output by the electrode driving circuit, where 1 ⁇ i ⁇ N-1 and N ⁇ 2.
  • the j+1th second gate electrode driving The circuit is connected to an output of the jth second gate electrode driving circuit to receive an output signal output by the jth second gate electrode driving circuit, wherein 1 ⁇ j ⁇ M-1 and M ⁇ 2.
  • first second gate electrode driving circuit is connected to the output end of the Nth first gate electrode driving circuit to receive the output signal output by the Nth first gate electrode driving circuit.
  • the reset module includes a transistor, a gate electrode of the transistor is configured to receive the enable signal, and a first electrode of the transistor is connected to an output end of a corresponding second gate electrode driving circuit, where The second electrode is connected to the low potential line.
  • the transistor is an n-channel transistor.
  • the foldable display panel is a foldable liquid crystal panel or a foldable OLED panel.
  • a driving method of the above foldable display panel comprising: receiving, by the reset module, when folding between the first display area and the second display area An external input enable signal; the reset module pulls down an output signal of the corresponding second gate electrode driving circuit to a low potential according to the enable signal, so that the M second gate electrode driving circuits are all turned off.
  • the gate electrode driving circuit corresponding to the display area that does not need to be displayed is completely stopped, so that power consumption is not wasted.
  • the gate electrode driving circuits corresponding to the display areas that do not need to be displayed are all stopped, there is no need to input a considerable number of 0 gray scale data signals from the external integrated circuit terminals.
  • FIG. 1 is a schematic view of a conventional foldable display panel
  • FIG. 2 is a structural diagram of a plurality of conventional cascaded GOA circuits
  • FIG. 3 is a state diagram of a conventional foldable display panel after folding
  • FIG. 4 is a schematic view of a foldable display panel in accordance with an embodiment of the present invention.
  • FIG. 5 is a circuit diagram of a reset module in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the mechanism of a foldable display panel in accordance with an embodiment of the present invention.
  • the foldable display panel may be, for example, a foldable liquid crystal panel or a foldable OLED panel, which may include: a flexible substrate 100, N first gate electrode driving circuits 200, M The second gate electrode driving circuit 300, the M reset modules 400, the data driver 500, and the enable signal generator 600. Where N and M are both positive integers.
  • the flexible substrate 100 includes a first display area 110 and a second display area 120.
  • the flexible substrate 100 may include more display areas, for example, three or more display areas from below.
  • the first display area 110 is located above the second display area 120.
  • the present invention is not limited thereto, and may be other positional relationships, such as the first display area 110 and the second display area 120. Division.
  • the first display area 110 and the second display area 120 are disposed to be foldable, that is, the first display area 110 and the second display area 120 may be along the dotted line XL set in FIG. 4 (actually not There is) bending.
  • the first display area 110 and the second display area 120 respectively include a plurality of pixels PX arranged in an array. Q of data lines D 1 to D Q disposed through the first display region 110 and the second display region 120, and the Q of data lines D 1 to D Q are connected to the data driver 500 to receive data voltages.
  • the first display area 110 includes N scanning lines G 1 to G N
  • the second display area 120 includes M scanning lines G 1 to G M .
  • the N first gate electrode driving circuits 200 are formed on the flexible substrate 100 and are sequentially arranged on one side of the first display region 110 in the direction from the top to the bottom. As another embodiment of the present invention, N first gate electrode driving circuits 200 may be disposed on opposite sides of the first display region 110, respectively.
  • Each of the N scanning lines G 1 to G N is connected to the corresponding first gate electrode driving circuit 200 to receive a scanning signal.
  • CK and XCK each represent a clock signal
  • Vgh represents a high potential voltage
  • Vgl represents a low potential voltage.
  • the M second gate electrode driving circuits 300 are formed on the flexible substrate 100 and sequentially arranged on one side of the second display region 120 in the direction from top to bottom. As another embodiment of the present invention, M second gate electrode driving circuits 300 may be disposed on opposite sides of the second display region 120, respectively.
  • Each of the M scanning lines G 1 to G M is connected to the corresponding second gate electrode driving circuit 300 to receive a scanning signal.
  • CK and XCK each represent a clock signal
  • Vgh represents a high potential voltage
  • Vgl represents a low potential voltage.
  • the N first gate electrode driving circuits 200 and the M second gate electrode driving circuits 300 are cascaded.
  • the gate electrode driving circuit fabricated on the flexible substrate 100 is referred to as a GOA (Gate on Array) circuit.
  • the i+1th first gate electrode driving circuit 200 is connected to the output end of the i-th first gate electrode driving circuit 200 to receive the i-th An output signal output by a gate electrode driving circuit 200, which is generally at a high potential, where 1 ⁇ i ⁇ N-1 and N ⁇ 2.
  • the latter first gate electrode driving circuit 200 can be turned on by using the high potential signal output from the previous first gate electrode driving circuit 200, thereby completing the level transfer operation.
  • the j+1th second gate electrode driving circuit 300 is connected to the output end of the jth second gate electrode driving circuit 300 to receive the jth second gate electrode driving
  • the output signal output by circuit 300 is typically at a high potential, where 1 ⁇ j ⁇ M-1 and M ⁇ 2.
  • the latter second gate electrode driving circuit 300 can be turned on by the high potential signal output from the last second gate electrode driving circuit 300, thereby completing the level transfer operation.
  • the first second gate electrode driving circuit 300 is connected to the output end of the Nth first gate electrode driving circuit 200 to receive an output signal output by the Nth first gate electrode driving circuit 200, and the output signal is High potential. In this manner, the first second gate electrode driving circuit 300 can be turned on by the high potential signal output from the Nth first gate electrode driving circuit 200, thereby completing the level transfer operation.
  • Each of the M reset modules 400 is disposed in the corresponding second gate electrode driving circuit 300.
  • the reset module 400 is configured to pull down the output signal of the corresponding second gate electrode driving circuit 300 from the high potential to the output signal according to the external input when the first display area 110 and the second display area 120 are folded along the broken line XL. The potential is low, so that the M second gate electrode driving circuits 300 are all turned off.
  • one of the reset modules 400 may be disposed in the Nth first gate electrode driving circuit 200, and the first second gate electrode driving circuit 300 to the M-1th second One of the reset modules 400 is disposed in the gate electrode driving circuit 300, respectively.
  • the output signal of the Nth first gate electrode driving circuit 200 is pulled down to a low potential
  • the first second gate electrode The output signals of the driving circuit 300 to the M-1th second gate electrode driving circuit 300 are also pulled down to a low potential, so that all of the M second gate electrode driving circuits 300 can be turned off.
  • the enable signal is generated by the enable signal generator 600.
  • the enable signal generator 600 is not drawn on the flexible substrate 100 for convenience of illustration, but in practice the enable signal generator 600 is integrated on the flexible substrate 100.
  • the enable signal generator 600 is triggered to generate the enable signal, and the reset module 400 corresponds to the enable signal according to the enable signal.
  • the output signal of the second gate electrode driving circuit 300 is pulled down from a high potential to a low potential, so that the M second gate electrode driving circuits 300 are all turned off.
  • FIG. 5 is a circuit diagram of a reset module in accordance with an embodiment of the present invention.
  • the reset module 400 includes a transistor T, but the present invention is not limited thereto.
  • the gate electrode of the transistor T is connected to the enable signal generator 600 for receiving the enable signal, and the first electrode of the transistor T is connected to the output terminal of the corresponding second gate electrode driving circuit 300, the transistor T
  • the second electrode is connected to a low potential line LL, wherein the low potential line LL is used to provide a low potential signal.
  • the enable signal generator 600 When folded between the first display area 110 and the second display area 120 along the broken line XL, the enable signal generator 600 is triggered to generate a high potential enable signal, which turns on the transistor T, thereby The first electrode is pulled low to a low potential, that is, the output signal of the output terminal of the corresponding second gate electrode driving circuit 300 is pulled low to a low potential.
  • the transistor T may be, for example, an n-channel transistor, but the invention is not limited thereto.
  • the first electrode may be one of the source and the drain of the transistor T, and the second electrode may be the other of the source and the drain of the transistor T, but the invention is not limited thereto.
  • the present invention also provides a driving method of the foldable display panel shown in FIG. 4, comprising: Step 1, when the first display area 110 and the second display area 120 are folded along the dotted line XL, the enable signal The generator 600 is triggered to generate a high-potential enable signal; Step 2: The reset module 400 high-potential enable signal pulls the output signal of the corresponding second gate electrode driving circuit 300 from a high potential to a low potential, thereby The second gate electrode driving circuits 300 are all turned off.
  • the second gate electrode driving circuit corresponding to the second display area that does not need to be displayed is completely stopped, so that the operation is not successful. Waste of consumption.
  • the second gate electrode driving circuit of the second display region is completely stopped, there is no need to input a considerable number of 0 gray scale data signals from the external integrated circuit terminal.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种可折叠显示面板，包括：柔性基板（100），柔性基板（100）包括第一显示区（110）和第二显示区（120），第一显示区（110）和第二显示区（120）之间被设置为可折叠；N个第一栅电极驱动电路（200），设置于柔性基板（100）上且顺序排列于第一显示区（110）的侧边，N为整数；M个第二栅电极驱动电路（300），设置于柔性基板（100）上且顺序排列于第二显示区（120）的侧边，M为整数；N个第一栅电极驱动电路（200）和M个第二栅电极驱动电路（300）级联；M个复位模块（400），复位模块（400）设置于对应的第二栅电极驱动电路（300）中，复位模块（400）用于在第一显示区（110）和第二显示区（120）之间折叠时根据外部输入的使能信号将对应的第二栅电极驱动电路（300）的输出信号下拉至低电位，从而M个第二栅电极驱动电路（300）全部关闭。

Description

可折叠显示面板及其驱动方法 技术领域
本发明属于显示技术领域，具体地讲，涉及一种可折叠显示面板及其驱动方法。
背景技术
随着人们对便携式显示设备的需求日趋增大，柔性显示技术成为极具竞争优势的显示技术之一。柔性显示技术的一大优点是具有可折叠性，这样可以增大显示面积而不会增大显示设备体积，非常便携。如图1所示，是现有的柔性可折叠显示面板的示意图，该柔性可折叠显示面板可沿着虚线(实际并不存在)XL进行折叠。
GOA(Gate on Array，阵列基板栅电极驱动)技术是将作为栅电极开关电路的TFT(Thin Film Transistor，薄膜场效应晶体管)集成于阵列基板上，从而省掉原先设置在阵列基板外的栅电极驱动集成电路部分，从材料成本和工艺步骤两个方面来降低产品的成本。GOA技术是目前显示技术领域常用的一种栅电极驱动电路技术，其制作工艺简单，具有良好的应用前景。GOA电路的功能主要包括：将上一GOA电路输出的高电平信号提供给下一GOA电路，以开启下一GOA电路，从而将时钟信号传递到与下一GOA电路相连的扫描线上，如图2所示。在图2中，CK和XCK均表示时钟信号，Vgh表示高电位电压，Vgl表示低电位电压。
目前设计的折叠方式有上下对折(如图3所示)或三折。折叠后，一般朝上的显示面会变为主显示面，朝下的显示面不显示内容以节省功耗。然而，GOA电路的起始信号一般从第一行开始，经由GOA电路中的位移寄存电路，往下产生逐行位移的输出信号；或者从最后一行输入起始信号，经由GOA电路中的位移寄存电路，往上产生逐行位移的输出信号，并且通过正向扫描控制信号和反向扫描控制信号配合控制输出信号正向扫描或反向扫描。这样的设计在折叠显示中有一个弊端：在柔性显示设备折叠后，GOA信号仍然会从第一行开 始往下传递，或者从最后一行开始往上传递。这样，在折叠后，为了使朝上的显示面显示画面，朝下的显示面不显示画面，集成电路(Integrated Circuit，IC)端必须输入相当多的0灰阶数据信号。另一方面，折叠后，只需要朝上的显示面对应的GOA电路工作即可，朝下的显示面对应的GOA电路可以不用运作，但此时朝下的显示面对应的GOA电路仍在工作，造成功耗的浪费。
发明内容
为了解决上述现有技术的问题，本发明的目的在于提供一种折叠后使不需要显示的显示面对应的GOA电路停止工作的可折叠显示面板及其驱动方法。
根据本发明的一方面，提供了一种可折叠显示面板，其包括：柔性基板，所述柔性基板包括第一显示区和第二显示区，所述第一显示区和所述第二显示区之间被设置为可折叠；N个第一栅电极驱动电路，设置于所述柔性基板上且顺序排列于所述第一显示区的侧边，N为整数；M个第二栅电极驱动电路，设置于所述柔性基板上且顺序排列于所述第二显示区的侧边，M为整数，所述N个第一栅电极驱动电路和所述M个第二栅电极驱动电路级联；M个复位模块，所述复位模块设置于对应的第二栅电极驱动电路中，所述复位模块用于在所述第一显示区和所述第二显示区之间折叠时根据外部输入的使能信号将对应的第二栅电极驱动电路的输出信号下拉至低电位，从而所述M个第二栅电极驱动电路全部关闭。
进一步地，所述M个复位模块均连接至一个使能信号产生器，所述第一显示区和所述第二显示区之间折叠时，所述使能信号产生器被触发产生所述使能信号。
进一步地，每个复位模块连接至对应的一个使能信号产生器，所述第一显示区和所述第二显示区之间折叠时，每个使能信号产生器被触发产生所述使能信号。
进一步地，在所述N个第一栅电极驱动电路中，第i+1个第一栅电极驱动电路连接到第i个第一栅电极驱动电路的输出端，以接收第i个第一栅电极驱动电路输出的输出信号，其中1≤i≤N-1且N≥2。
进一步地，在所述M个第二栅电极驱动电路中，第j+1个第二栅电极驱动 电路连接到第j个第二栅电极驱动电路的输出端，以接收第j个第二栅电极驱动电路输出的输出信号，其中1≤j≤M-1且M≥2。
进一步地，第1个第二栅电极驱动电路连接到第N个第一栅电极驱动电路的输出端，以接收第N个第一栅电极驱动电路输出的输出信号。
进一步地，所述复位模块包括晶体管，所述晶体管的栅电极用于接收所述使能信号，所述晶体管的第一电极连接至对应的第二栅电极驱动电路的输出端，所述晶体管的第二电极连接至低电位线。
进一步地，所述晶体管为n沟道晶体管。
进一步地，所述可折叠显示面板为可折叠液晶面板或者可折叠OLED面板。
根据本发明的另一方面，还提供了一种上述的可折叠显示面板的驱动方法，其包括：在所述第一显示区和所述第二显示区之间折叠时，所述复位模块接收外部输入的使能信号；所述复位模块根据所述使能信号将对应的第二栅电极驱动电路的输出信号下拉至低电位，从而所述M个第二栅电极驱动电路全部关闭。
本发明的有益效果：本发明的可折叠显示面板在折叠后，不需要显示的显示区对应的栅电极驱动电路全部停止工作，从而不会造成功耗的浪费。此外，由于不需要显示的显示区对应的栅电极驱动电路全部停止工作，因此也无需外部的集成电路端输入相当多的0灰阶数据信号。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是现有的可折叠显示面板的示意图；
图2是现有的级联的多个GOA电路的结构图；
图3是现有的可折叠显示面板折叠后的状态图；
图4是根据本发明的实施例的可折叠显示面板的示意图；
图5是根据本发明的实施例的复位模块的电路图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
在附图中，为了清楚起见，夸大了层和区域的厚度。相同的标号在整个说明书和附图中表示相同的元器件。
图4是根据本发明的实施例的可折叠显示面板的机构示意图。
参照图4，根据本发明的实施例的可折叠显示面板可例如是可折叠的液晶面板或者可折叠的OLED面板，其可以包括：柔性基板100、N个第一栅电极驱动电路200、M个第二栅电极驱动电路300、M个复位模块400、数据驱动器500和使能信号产生器600。其中，N和M均为正整数。
柔性基板100包括第一显示区110和第二显示区120。作为本发明的另一实施例，柔性基板100可以包括更多的显示区，例如从下之下分为三个或者更多个的显示区。在本实施例中，第一显示区110位于第二显示区120之上，但本发明并不限制于此，也可以是其他的位置关系，例如第一显示区110和第二显示区120左右划分。进一步地，在第一显示区110和第二显示区120之间设置为可折叠，即第一显示区110和第二显示区120可以沿着图4中所设的虚线XL(实际中并不存在)进行弯折。
第一显示区110和第二显示区120中分别包括阵列排布的若干像素PX。Q条数据线D1至DQ穿设于第一显示区110和第二显示区120中，并且Q条数据线D1至DQ均连接到数据驱动器500，以接收数据电压。第一显示区110中包括N条扫描线G1至GN，第二显示区120中包括M条扫描线G1至GM。
N个第一栅电极驱动电路200制作于柔性基板100上且沿着从上至下的方 向顺序排列于第一显示区110的一侧。作为本发明的另一实施方式，也可以在第一显示区110的相对两侧分别布置N个第一栅电极驱动电路200。N条扫描线G1至GN中的每一条连接到对应的第一栅电极驱动电路200，以接收扫描信号。其中，在每个第一栅电极驱动电路200中，CK和XCK均表示时钟信号，Vgh表示高电位电压，Vgl表示低电位电压。
M个第二栅电极驱动电路300制作于柔性基板100上且沿着从上至下的方向顺序排列于第二显示区120的一侧。作为本发明的另一实施方式，也可以在第二显示区120的相对两侧分别布置M个第二栅电极驱动电路300。M条扫描线G1至GM中的每一条连接到对应的第二栅电极驱动电路300，以接收扫描信号。其中，在每个第二栅电极驱动电路300中，CK和XCK均表示时钟信号，Vgh表示高电位电压，Vgl表示低电位电压。
N个第一栅电极驱动电路200和M个第二栅电极驱动电路300级联。一般而言，制作于柔性基板100上的栅电极驱动电路被称为GOA(Gate on Array，阵列基板栅电极驱动)电路。
也就是说，在N个第一栅电极驱动电路200中，第i+1个第一栅电极驱动电路200连接到第i个第一栅电极驱动电路200的输出端，以接收第i个第一栅电极驱动电路200输出的输出信号，该输出信号通常为高电位，其中1≤i≤N-1且N≥2。如此，可以利用上一个第一栅电极驱动电路200输出的高电位信号将后一个第一栅电极驱动电路200打开，从而完成级传工作。
在M个第二栅电极驱动电路300中，第j+1个第二栅电极驱动电路300连接到第j个第二栅电极驱动电路300的输出端，以接收第j个第二栅电极驱动电路300输出的输出信号，该输出信号通常为高电位，其中1≤j≤M-1且M≥2。如此，可以利用上一个第二栅电极驱动电路300输出的高电位信号将后一个第二栅电极驱动电路300打开，从而完成级传工作。
进一步地，第1个第二栅电极驱动电路300连接到第N个第一栅电极驱动电路200的输出端，以接收第N个第一栅电极驱动电路200输出的输出信号，该输出信号为高电位。如此，可以利用第N个第一栅电极驱动电路200输出的高电位信号将第1个第二栅电极驱动电路300打开，从而完成级传工作。
M个复位模块400中的每一个设置于对应的第二栅电极驱动电路300中。复位模块400用于在第一显示区110和第二显示区120之间沿着虚线XL折叠时根据外部输入的使能信号将对应的第二栅电极驱动电路300的输出信号由高电位下拉至低电位，从而M个第二栅电极驱动电路300全部关闭。
作为本发明的另一实施方式，可以在第N个第一栅电极驱动电路200中设置一个所述复位模块400，且在第1个第二栅电极驱动电路300至第M-1个第二栅电极驱动电路300中分别设置一个所述复位模块400。如此，在第一显示区110和第二显示区120之间沿着虚线XL折叠时，第N个第一栅电极驱动电路200的输出信号被下拉至低电位，并且第1个第二栅电极驱动电路300至第M-1个第二栅电极驱动电路300的输出信号也被下拉至低电位，从而也可以M个第二栅电极驱动电路300全部关闭。
在本实施例中，使能信号由使能信号产生器600产生。在图4中，为了便于图示，未将使能信号产生器600画制于柔性基板100上，而在实际中使能信号产生器600是集成于柔性基板100上的。具体地，在第一显示区110和第二显示区120之间沿着虚线XL折叠时，使能信号产生器600被触发而产生所述使能信号，复位模块400根据该使能信号将对应的第二栅电极驱动电路300的输出信号由高电位下拉至低电位，从而M个第二栅电极驱动电路300全部关闭。
图5是根据本发明的实施例的复位模块的电路图。
参照图5，根据本发明的实施例的复位模块400包括晶体管T，但本发明并不限制于此。该晶体管T的栅电极连接到使能信号产生器600，以用于接收所述使能信号，该晶体管T的第一电极连接至对应的第二栅电极驱动电路300的输出端，该晶体管T的第二电极连接至低电位线LL，其中，该低电位线LL用于提供一低电位的信号。
在第一显示区110和第二显示区120之间沿着虚线XL折叠时，使能信号产生器600被触发而产生高电位的使能信号，该使能信号将晶体管T导通，从而将第一电极拉低到低电位，即将对应的第二栅电极驱动电路300的输出端的输出信号拉低到低电位。
在本实施例中，该晶体管T可例如是n沟道晶体管，但本发明并不限制于此。此外，第一电极可以是该晶体管T的源极和漏极中的一个，而第二电极可以是该晶体管T的源极和漏极中的另一个，但本发明并不限制于此。
本发明还提供了一种图4所示的可折叠显示面板的驱动方法，其包括：步骤一，在第一显示区110和第二显示区120之间沿着虚线XL折叠时，使能信号产生器600被触发而产生高电位的使能信号；步骤二：复位模块400根高电位的使能信号将对应的第二栅电极驱动电路300的输出信号由高电位下拉至低电位，从而M个第二栅电极驱动电路300全部关闭。
综上所述，根据本发明的实施例，在第一显示区和第二显示区折叠后，不需要显示的第二显示区对应的第二栅电极驱动电路全部停止工作，从而不会造成功耗的浪费。此外，由于第二显示区的第二栅电极驱动电路全部停止工作，因此也无需外部的集成电路端输入相当多的0灰阶数据信号。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (16)

  1. 一种可折叠显示面板，其中，包括：
    柔性基板，所述柔性基板包括第一显示区和第二显示区，所述第一显示区和所述第二显示区之间被设置为可折叠；
    N个第一栅电极驱动电路，设置于所述柔性基板上且顺序排列于所述第一显示区的侧边，N为整数；
    M个第二栅电极驱动电路，设置于所述柔性基板上且顺序排列于所述第二显示区的侧边，M为整数，所述N个第一栅电极驱动电路和所述M个第二栅电极驱动电路级联；
    M个复位模块，所述复位模块设置于对应的第二栅电极驱动电路中，所述复位模块用于在所述第一显示区和所述第二显示区之间折叠时根据外部输入的使能信号将对应的第二栅电极驱动电路的输出信号下拉至低电位，从而所述M个第二栅电极驱动电路全部关闭。
  2. 根据权利要求1所述可折叠显示面板，其中，所述M个复位模块均连接至一个使能信号产生器，所述第一显示区和所述第二显示区之间折叠时，所述使能信号产生器被触发产生所述使能信号。
  3. 根据权利要求1所述的可折叠显示面板，其中，每个复位模块连接至对应的一个使能信号产生器，所述第一显示区和所述第二显示区之间折叠时，每个使能信号产生器被触发产生所述使能信号。
  4. 根据权利要求1所述的可折叠显示面板，其中，在所述N个第一栅电极驱动电路中，第i+1个第一栅电极驱动电路连接到第i个第一栅电极驱动电路的输出端，以接收第i个第一栅电极驱动电路输出的输出信号，其中1≤i≤N-1且N≥2。
  5. 根据权利要求2所述的可折叠显示面板，其中，在所述N个第一栅电极驱动电路中，第i+1个第一栅电极驱动电路连接到第i个第一栅电极驱动电 路的输出端，以接收第i个第一栅电极驱动电路输出的输出信号，其中1≤i≤N-1且N≥2。
  6. 根据权利要求3所述的可折叠显示面板，其中，在所述N个第一栅电极驱动电路中，第i+1个第一栅电极驱动电路连接到第i个第一栅电极驱动电路的输出端，以接收第i个第一栅电极驱动电路输出的输出信号，其中1≤i≤N-1且N≥2。
  7. 根据权利要求4所述的可折叠显示面板，其中，在所述M个第二栅电极驱动电路中，第j+1个第二栅电极驱动电路连接到第j个第二栅电极驱动电路的输出端，以接收第j个第二栅电极驱动电路输出的输出信号，其中1≤j≤M-1且M≥2。
  8. 根据权利要求5所述的可折叠显示面板，其中，在所述M个第二栅电极驱动电路中，第j+1个第二栅电极驱动电路连接到第j个第二栅电极驱动电路的输出端，以接收第j个第二栅电极驱动电路输出的输出信号，其中1≤j≤M-1且M≥2。
  9. 根据权利要求6所述的可折叠显示面板，其中，在所述M个第二栅电极驱动电路中，第j+1个第二栅电极驱动电路连接到第j个第二栅电极驱动电路的输出端，以接收第j个第二栅电极驱动电路输出的输出信号，其中1≤j≤M-1且M≥2。
  10. 根据权利要求7所述的可折叠显示面板，其中，第1个第二栅电极驱动电路连接到第N个第一栅电极驱动电路的输出端，以接收第N个第一栅电极驱动电路输出的输出信号。
  11. 根据权利要求8所述的可折叠显示面板，其中，第1个第二栅电极驱动电路连接到第N个第一栅电极驱动电路的输出端，以接收第N个第一栅电极驱动电路输出的输出信号。
  12. 根据权利要求9所述的可折叠显示面板，其中，第1个第二栅电极驱动电路连接到第N个第一栅电极驱动电路的输出端，以接收第N个第一栅电极驱动电路输出的输出信号。
  13. 根据权利要求1所述可折叠显示面板，其中，所述复位模块包括晶体管，所述晶体管的栅电极用于接收所述使能信号，所述晶体管的第一电极连接至对应的第二栅电极驱动电路的输出端，所述晶体管的第二电极连接至低电位线。
  14. 根据权利要求13所述的可折叠显示面板，其中，所述晶体管为n沟道晶体管。
  15. 根据权利要求1所述可折叠显示面板，其中，所述可折叠显示面板为可折叠液晶面板或者可折叠OLED面板。
  16. 一种权利要求1所述的可折叠显示面板的驱动方法，其中，包括：
    在所述第一显示区和所述第二显示区之间折叠时，所述复位模块接收外部输入的使能信号；
    所述复位模块根据所述使能信号将对应的第二栅电极驱动电路的输出信号下拉至低电位，从而所述M个第二栅电极驱动电路全部关闭。
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