WO2015089932A1 - 阵列基板行驱动电路 - Google Patents
阵列基板行驱动电路 Download PDFInfo
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- WO2015089932A1 WO2015089932A1 PCT/CN2014/070947 CN2014070947W WO2015089932A1 WO 2015089932 A1 WO2015089932 A1 WO 2015089932A1 CN 2014070947 W CN2014070947 W CN 2014070947W WO 2015089932 A1 WO2015089932 A1 WO 2015089932A1
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- array substrate
- signal
- input end
- drain
- row driving
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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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- 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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13454—Drivers integrated on the active matrix substrate
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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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
- 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
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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
- 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
- G09G2300/0809—Several active elements per pixel in active matrix panels
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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
- 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
- G09G2310/0248—Precharge or discharge of column electrodes before or after applying exact column voltages
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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
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0252—Improving the response speed
Definitions
- the present invention relates to the field of liquid crystal display, and in particular to an array substrate row driving circuit. Background technique
- Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used. With the development of the liquid crystal display device industry, its performance is also getting higher and higher, such as High resolution, high brightness, wide viewing angle, low power consumption, etc., and their corresponding technologies have been continuously developed.
- Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal display panel and a backlight module.
- the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates, and the liquid crystal molecules are controlled to change direction by applying a driving voltage on the two glass substrates by using a driving circuit, and the light of the backlight module is refracted to generate a picture.
- the array substrate row driving technology is to use the front-end array (_Array) process of the existing thin film transistor liquid crystal display to fabricate the gate row scanning driving signal circuit on the array substrate of the liquid crystal display panel to realize the driving technology for gate progressive scanning.
- _Array front-end array
- the gate driving integrated circuit portion can be omitted, and the product cost can be reduced from the aspects of material cost and manufacturing process.
- the gate row scan driving signal circuit integrated on the array substrate by the array substrate row driving technique is also referred to as an array substrate row driving circuit.
- the array substrate row driving circuit includes a plurality of array substrate row driving units. Please refer to FIG. 1 , which is a circuit diagram of an array substrate row driving unit of the array substrate row driving circuit in the prior art, specifically including: a pull-up circuit 100 , The pull-up control circuit 200, the pull-down circuit 300, the first pull-down maintaining circuit 400, and the second pull-down maintaining circuit 500.
- the pull-up circuit 100 is mainly responsible for outputting the clock signal CKn as the gate signal G fi ; the pull-up control circuit 200 is responsible for controlling the turn-on time of the pull-up circuit 100, and is generally connected to the downlink transmitted by the upper-level array substrate row driving unit.
- the array substrate row driving circuit is provided with two low-level signal lines, and the two low-level signal lines are respectively provided.
- a second low level signal v ss2 using the second low level v ss2 to pull down the voltage difference Vgs between the gate and the source of the pull-up circuit 100 when the scan circuit is in the off (hold) time, reducing the upper Pull circuit 100 and second pull-down sustain circuit 500 function as leakage current;
- capacitance C b . . St is responsible for the secondary rise of the control signal Q n of the pull-up circuit 100, which facilitates the output of the gate signal G n .
- the prior art array substrate row driver circuit has the following two disadvantages: First, there is a conduction path between two different negative potentials. 2 is an equivalent circuit diagram of FIG.
- the leakage current loop of the array substrate row driving unit connection, the array substrate row driving circuit in the prior art will cause a large current between the leakage current loop L100 and L200, and the current magnitude and the pull-down point and the potential of the
- the second is:
- the diode design of the thin film transistors T510 and T610 makes the pull-down point?
- the high potentials of 11 and 1 ⁇ 1 cannot be quickly released, and the resulting voltage changes of the Pn point and the ⁇ « point are as shown in Fig. 3, which increases the main four of the first and second pull-down sustain circuits 400, 500.
- the stress of the thin film transistors ⁇ 320, ⁇ 420, ⁇ 330, ⁇ 430 will eventually affect the operational life of the array substrate row driver circuit.
- the object of the present invention is to provide an array substrate row driving circuit, which utilizes the array substrate row driving technology to reduce the cost of the liquid crystal display, and solves the problem that the array substrate driving circuit can be caused by introducing two low level signals into the existing array substrate row driving circuit. Poor functional and long operating life of the array substrate row driver circuit to improve the quality of the display
- the present invention provides an array substrate row driving circuit comprising a cascaded multi-level array substrate row driving unit, wherein:
- the n-th array substrate row driving unit has the first input end of the 11th-level signal, a second input end, a ⁇ - ⁇ signal input end, a first output end, and a second output end, wherein the first output end of the nth stage array substrate row driving unit is used to drive the array An active area of the substrate;
- the first input end of the ⁇ -1 stage signal of the nth stage array substrate driving unit, the second input end of the 1st to 1st stage signal, and the input end of the nth 1st level ⁇ : are electrically connected to the nth The first output end, the second output end, and the n+l-th array substrate row driving unit of the 1-stage array substrate row driving unit
- the first output end of the n-th array substrate row driving unit is electrically connected to the first input end of the n-th level signal of the ni-level array substrate row driving unit and the n-1th a first stage signal input end of the row array substrate row driving unit, wherein the second output end of the nth stage array substrate row driving unit is electrically connected to the ri-1 level signal of the n+1th array substrate row driving unit
- the n-th array substrate row driving unit has a first input end of the nth-level signal, and the n-th level signal is second.
- the n-th stage signal first driving end of the nth stage array substrate driving unit and the nth to first level signal second input end are both used for inputting a pulse activation signal, the n+1th stage signal input
- the first output end of the row driving unit of the n-th array substrate row is electrically connected to the first output end and the second output end of the n-th array substrate row driving unit respectively a first input end of the n-th stage signal of the array substrate row driving unit and a second input end of the n1-th stage signal;
- the n-th array substrate row driving unit For the nth-level array substrate row driving unit located at the penultimate stage of the array substrate row driving circuit, the n-th array substrate row driving unit has the first input end of the n-th stage signal, and the n-1th stage signal a second input end, an n+1th stage signal input end, a first output end, and a second output end; the first input end and the second input end of the ninth stage signal of the nth stage array substrate row driving unit Electrically connecting to the first output end and the second output end of the n-th stage array substrate row driving unit, wherein the n+th stage signal input end of the nth stage array substrate row driving unit is configured to input a pulse activation signal
- the first output end of the 11th stage array substrate row driving unit is electrically connected to the ⁇ + ⁇ 1 stage signal input end of the n-1th stage array substrate row driving unit and the second output end thereof is set to be suspended;
- the n-th stage array substrate row driving unit further has a clock signal first input end and a first low voltage a first input terminal for inputting a first low level, a second low level input terminal for inputting a second low level, and a second low level input end Said second low level is less than the first low level;
- Pull-up unit respectively, and pull-up control unit and clock signal first input end, first output The end and the second output are electrically connected;
- the first pull-down maintaining unit is electrically connected to the first low level input end, the second low level input end, the pull-up control unit and the pull-up unit respectively;
- a second pull-down maintaining unit electrically connected to the first low level input terminal, the second low level input terminal, the first pull-down maintaining unit, the pull-up control unit, and the pull-up unit;
- the pull-down unit is respectively connected to the n+l-level signal input terminal, the first low-level input terminal, the pull-up control unit, the pull-up unit, the first pull-down maintaining unit, the second pull-down maintaining unit, and the first output terminal connection.
- the input signal of the first input end of the clock signal is a first clock signal or a second clock signal, and the first clock signal is opposite in phase to the second clock signal; when the n-th array substrate row of the array substrate row driving circuit
- the input signal of the first input end of the clock signal of the driving unit is the first clock signal
- the input signal of the first input end of the clock signal of the n+1th array substrate row driving unit of the array substrate row driving circuit is the second clock signal .
- the pull-up control unit is a first thin film transistor, the first thin film transistor has a first gate, a first source and a first drain, and the first gate is electrically connected to the n-1th stage a second input end of the signal, the first source is electrically connected to the first input end of the nth stage signal, and the first drain is electrically connected to the first and second pull-down maintaining units, the pull-down unit and the pull-up unit respectively connection.
- the pull-up unit includes a capacitor, a second thin film transistor, and a third thin film transistor,
- the pull down unit includes a fourth. a fifth thin film transistor having a fourth gate, a fourth source, and a fourth drain, wherein the fifth thin film transistor has a fifth cabinet, a fifth source, and a fifth drain,
- the fourth source is electrically connected to the fifth amp-pole and the n+1th-level signal input terminal, and the fourth source is electrically connected to the first low-level input terminal and the fifth source, respectively.
- the fourth drain is electrically connected to the first drain, the first end of the capacitor, the second gate, the third gate, and the first and second pull-down maintaining units, respectively, and the fifth drain is respectively connected to the first output end,
- the third source, the other end of the capacitor, and the first and second pull-down maintaining units are electrically connected.
- the first pull-down maintaining unit includes sixth to ninth thin film transistors, the sixth thin film transistor has a sixth gate, a sixth source, and a sixth drain, and the seventh thin film transistor has a seventh gate a seventh source and a seventh drain, the eighth thin film transistor having an eighth gate and an eighth source And a ninth thin film transistor having a ninth* pole, a ninth source, and a ninth drain, wherein the sixth drain and the seventh drain, the eighth gate, and the ninth gate respectively Electrostatically connected, the seventh gate is electrically connected to the first drain, the ninth drain, the end of the capacitor, the second cabinet, the third gate, the fourth drain, and the second pull-down maintaining unit Connecting, the seventh source is electrically connected to the second low level input end, and the eighth drain is electrically connected to the other end of the capacitor, the fifth drain, the second pull-down maintaining unit, and the first output end respectively Connecting, the eighth source is electrically connected to the first low level input end, and the ninth source is electrically connected to the first low level input end;
- the second pull-down maintaining unit includes tenth to thirteenth thin film transistors, the tenth thin film transistor has a tenth gate, a tenth source, and a tenth drain, and the eleventh thin film transistor has eleventh a twelfth thin film transistor having a twelfth gate, a twelfth source, and a twelfth drain, wherein the thirteenth thin film transistor has a tenth a third shed-pole, a thirteenth source, and a thirteenth drain, wherein the tenth drain is electrically connected to the eleventh drain, the twelfth gate, and the thirteenth drain, respectively, the tenth a gate is electrically connected to the first drain, the thirteenth drain, the seventh gate, the ninth drain, and one end of the capacitor, and the eleventh source is electrically connected to the second low level
- the input end, the twelfth drain is electrically connected to the other end of the capacitor, the eighth drain and the first output end, and the twel
- the 11th array substrate row driving unit of the array substrate row driving circuit further has a clock signal second input end and a clock signal third input end, wherein the sixth gate and the sixth source are both connected to the clock signal second The input end, the tenth gate and the tenth source are both connected to the third input end of the clock signal, the input signal of the second input end of the clock signal is a first clock signal, and the input signal of the third input end of the clock signal Is the second clock signal.
- the first pull-down maintaining unit further includes a fourteenth thin film transistor, wherein the fourteenth thin film transistor has a fourteenth gate, a fourteenth source, and a fourteenth drain, wherein the fourteenth drain respectively Electrically connecting with the sixth drain, the seventh drain, the eighth gate, and the ninth gate, wherein the fourteenth source is electrically connected to the sixth gate and the sixth source, respectively;
- the pull-down maintaining unit further includes a fifteenth thin film transistor having a fifteenth gate, a fifteenth source, and a fifteenth drain, wherein the fifteenth drain and the tenth drain respectively And electrically connected to the eleventh drain twelfth gate and the thirteenth cabinet, wherein the fifteenth source is electrically connected to the tenth gate and the tenth source, respectively.
- the n-th array substrate row driving unit of the array substrate row driving circuit further has a second input end of the clock signal and a third input end of the clock signal, wherein the sixth gate, the sixth source, and the fourteenth source are both Connected to the second input end of the clock signal, the fourteenth gate is connected to the third input end of the clock signal, and the tenth gate, the tenth source and the fifteenth source are both connected to the third signal of the clock signal In the input end, the fifteenth gate is connected to the second input end of the clock signal, the input signal of the second input end of the clock signal is a first clock signal, and the input signal of the third input end of the clock signal is a second clock signal .
- the n-th array substrate row driving unit of the array substrate row driving circuit further has a first input end of the low frequency signal and a second input end of the low frequency signal, wherein the sixth gate, the sixth source, and the fourteenth source are both Connected to the first input of the low frequency signal, the fourteenth gate is connected to the second input of the low frequency signal, and the tenth*th, tenth and fifteenth sources are both connected to the second input of the low frequency signal End, the fifteenth gate is connected to the first input end of the low frequency signal, the input signal of the first input end of the low frequency signal is a low frequency signal or an ultra low frequency signal, and the input signal of the second input end of the low frequency signal is a low frequency signal or Ultra low frequency signal.
- the present invention also provides an array substrate row driving circuit comprising a cascaded multi-level array substrate row driving unit, wherein:
- the n-th array substrate row driving unit has a first input end of the nth-level signal, a second input end of the n-1 stage signal, a signal input terminal of the 11+1th stage, a first output end, and a second output end, wherein the first output end of the nth stage array base driving unit is used for driving An active region of the array substrate; a first input end of the n-1th stage signal of the second stage array substrate driving unit, a second input end of the nth level signal, and an input signal of the nth H level signal respectively Connecting to the first output end of the n-1th stage array base driving unit, the second output end, and the first output end of the nth first level array substrate row driving unit, the nth stage array substrate row driving the first level signal ⁇ ⁇ ⁇ stage n-1 first input signal a first output terminal electrically connected to the first stage unit n +
- the 11th-level array substrate row driving unit has a first input signal of the nth-level signal, and a second signal of the first-order level-1
- the first input end of the n-1th stage signal and the second input end of the n-1th stage signal of the nth stage array substrate driving unit are both used for inputting a pulse activation signal, and the nth-th stage signal input end
- the first output end of the row driving unit of the n+1th array substrate row is electrically connected to the first output end and the second output end of the nth stage array substrate row driving unit respectively electrically connected to the nth 10th level array a first input end of the n-th stage signal of the substrate row driving unit and a second input end
- the input terminal - the first level input, the second low level input, the second low level input is used to input the first low level, the second low level input For inputting a second low level, and the second low level is less than the first low level;
- the n-th array substrate driving unit further includes:
- a pull-up control unit electrically connected to the first input end of the ⁇ 1st stage signal and the second input end of the ⁇ 1st stage signal;
- a pull-up unit electrically connected to the pull-up control unit, the first input end of the clock signal, the first output end, and the second output end;
- the first pull-down maintaining unit is respectively connected to the first low level input terminal. Second low level input,
- a first pull-down maintenance unit electrically connected to the first low level input terminal, the second low level input terminal, the first pull-down maintaining unit, the pull-up control unit, and the pull-up unit;
- the pull-down unit is respectively connected to the n-th H signal input terminal, the first low level input terminal, the pull-up control unit, the pull-up unit, the first pull-down maintaining unit, the second pull-down maintaining unit, and the first output terminal Connected
- the input signal of the first input end of the clock signal is a first clock signal or a second clock signal, and the first clock signal is opposite in phase to the second clock signal; when the nth stage array of the array substrate row driving circuit When the input signal of the first input end of the clock signal of the substrate row driving unit is the first clock signal, the input signal of the first input end of the clock signal of the ⁇ ⁇ - 1 array substrate row driving unit of the array substrate row driving circuit is the second Clock signal
- the pull-up control unit is a first thin film transistor, the first thin film transistor has a first drain, a first source, and a first drain, and the first gate is electrically connected to the nth- a first input terminal of the first-stage signal, the first source is electrically connected to the first input end of the second-i-level signal, The first drain is electrically connected to the first and second pull-down maintaining units, the pull-down unit, and the pull-up unit, respectively.
- the pull-up unit includes a capacitor, a second thin film transistor, and a third thin film transistor, the second thin film transistor has a second bridge, a second source, and a second drain, and the third thin film transistor has a third gate, a third source, and a third drain, wherein the second gate is electrically connected to one end of the capacitor, the first drain, the third gate, the first second pull-down maintaining unit, and the pull-down unit
- the second source is electrically connected to the third source and the first input end of the clock signal
- the second drain is electrically connected to the second output
- the third drain is respectively connected to the first output end.
- the first and second pull-down maintaining units, the pull-down unit and the other end of the capacitor are electrically connected;
- the pull-down unit includes fourth and fifth thin film transistors, the fourth thin film transistor has a fourth bridge, a fourth source, and a fourth drain, and the fifth thin film transistor has a fifth ⁇ -pole, a fifth source and a fifth drain, wherein the fourth gate is electrically connected to the fifth gate and the 11+1th stage signal input end, respectively, wherein the fourth source is respectively connected to the first low level input terminal
- the fifth source is electrically connected
- the fourth drain is electrically connected to the first drain, the one end of the capacitor, the second gate, the third gate, and the first and second pull-down maintaining units, respectively.
- the five drains are electrically connected to the first output end, the third source, the other end of the capacitor, and the first and second pull-down maintaining units, respectively;
- the first pull-down maintaining unit includes sixth to ninth thin film transistors, the sixth thin film transistor has a sixth* pole, a sixth source, and a sixth drain, and the seventh thin film transistor has a seventh
- the eighth thin film transistor has an eighth gate, an eighth source, and an eighth drain
- the ninth thin film transistor has a ninth cabinet and a ninth source
- the sixth drain is electrically connected to the seventh drain, the eighth bridge, and the ninth gate, respectively, and the seventh gate is respectively connected to the first drain and the ninth drain
- One end of the capacitor, the second cabinet, the third gate, the fourth drain, and the second pull-down maintaining unit are electrically connected, and the seventh source is electrically connected to the second low-level input end
- the eighth drain is electrically connected to the other end of the capacitor, the fifth drain, the second pull-down maintaining unit, and the first output end, and the eighth source is electrically connected to the first low-level input end
- the ninth source is electrically connected to the first low level input terminal;
- the second pull-down maintaining unit includes tenth to thirteenth thin film transistors, the tenth thin film transistor has a tenth cabinet tenth source and a tenth drain, and the eleventh thin film transistor has an eleventh cabinet a thirteenth source electrode and an eleventh drain electrode, the twelfth thin film transistor has a twelfth*th pole, a twelfth source, and a twelfth drain, and the thirteenth thin film transistor has a thirteenth
- the tenth drain and the thirteenth drain are electrically connected to the eleventh drain, the twelfth gate and the thirteenth gate, respectively, the eleventh gate
- the poles are electrically connected to the first drain, the thirteenth drain, the seventh bridge, the ninth drain, and one end of the capacitor, and the eleventh source is electrically connected to the second low-level input.
- the twelfth drain is respectively connected to the other end of the capacitor and the eighth drain And the first output end is electrically connected, the twelfth source is electrically connected to the first low level input end, and the thirteenth source is electrically connected to the first low level input end.
- No. 2 input end, 'the clock number is the input end, the six-gate and sixth-pole are connected to the second input end of the clock signal, and the tenth and the tenth source are connected to the clock signal
- the input signal of the second input end of the clock signal is a first clock signal, and the input signal of the third input end of the clock signal is a second clock signal.
- the first pull-down maintaining unit further includes a fourteenth thin film transistor, wherein the fourteenth thin film transistor has a fourteenth gate, a fourteenth source, and a fourteenth drain, wherein the fourteenth drain respectively Electrically connecting with the sixth drain, the seventh drain, the eighth gate, and the ninth gate, wherein the fourteenth source is electrically connected to the sixth bridge and the sixth source, respectively;
- the pull-down maintaining unit further includes a fifteenth thin film transistor having a fifteenth gate, a fifteenth source, and a fifteenth drain, wherein the fifteenth drain and the tenth drain respectively And electrically connected to the eleventh drain, the twelfth gate and the thirteenth grid, wherein the fifteenth source is electrically connected to the tenth gate and the tenth source, respectively.
- the n-th array substrate row driving unit of the array substrate row driving circuit further has a second input end of the clock signal and a third input end of the clock signal, wherein the sixth gate, the sixth source, and the fourteenth source are both Connected to a second input end of the clock signal, the fourteenth gate is connected to a third input end of the clock signal, and the tenth*th, tenth, and fifteenth sources are all connected to the third input of the clock signal
- the fifteenth gate is connected to the second input end of the clock signal, the input signal of the second input end of the clock signal is a first clock signal, and the input signal of the third input end of the clock signal is a second clock signal.
- the n-th array substrate row driving unit of the array substrate row driving circuit further has a first input end of the low frequency signal and a second input end of the low frequency signal, wherein the sixth *pole, the sixth source, and the fourteenth source are both Connected to the first input of the low frequency signal, the fourteenth gate is connected to the second input of the low frequency signal, the tenth* pole.
- the tenth source and the fifteenth source are both connected to the second input end of the low frequency signal, the fifteenth bridge is connected to the first input end of the low frequency signal, and the input signal of the first input end of the low frequency signal is a low frequency signal or
- the ultra low frequency signal, the input signal of the second input end of the low frequency signal is a low frequency signal or an ultra low frequency signal.
- the array substrate row driving circuit of the present invention uses two low-level signals to reduce the leakage current of the thin film transistor in the pull-down sustaining unit, wherein the second low level having a lower potential is only responsible for the pull-down point ⁇ with!
- the first low level with higher potential is responsible for providing low potential for pull-down point 3 ⁇ 4 and 0 classroom, which can reduce the pull-down point and potential at the pull-down point ( ⁇ and ⁇ open, which is beneficial (3 ⁇ 4 and 0) Charging can also be disconnected between two low level signals in the circuit
- the leakage circuit greatly reduces the leakage current between the two low-level signals, improves the performance of the array substrate driving circuit, improves the quality of the display picture, and increases the diode design of the original sixth thin film transistor and the tenth thin film transistor.
- the fourteenth thin film transistor and the fifteenth thin film transistor are responsible for discharging the pull-down points: ⁇ and 13 ⁇ 4, and the potential of the realization and the point changes with the change of the first clock signal CK1 and the second clock signal CK2, resulting in Alternating action, thereby reducing the pressure exerted by the eighth and ninth thin film transistors and the twelfth and thirteenth thin film transistors, prolonging the service life of the array substrate driving circuit, and simultaneously controlling the pull-down sustaining unit by using low frequency or ultra low frequency signals, effectively reducing ⁇ Power consumption of the circuit.
- FIG. 1 is a circuit diagram of a row substrate driving circuit of the prior art
- Figure 2 is an equivalent circuit diagram of Figure i;
- FIG. 3 is a driving timing diagram of the array substrate row driving circuit shown in FIG. 1;
- FIG. 4 is a circuit diagram of a preferred embodiment of an array substrate row driving circuit of the present invention.
- FIG. 5 is a driving timing diagram of the array substrate row driving circuit shown in FIG. 4;
- Figure 6 is a graph of the characteristics of the thin film transistor I-V
- FIG. 7 is a circuit diagram of another preferred embodiment of an array substrate row driving circuit of the present invention.
- FIG. 8 is a driving timing diagram of the array substrate row driving circuit shown in FIG. 7;
- FIG. 9 is a circuit diagram of still another preferred embodiment of the array substrate row driving circuit of the present invention.
- FIG. 10 is a driving timing diagram of the array substrate row driving circuit shown in FIG. Specific travel mode
- the present invention provides an array substrate row driving circuit, including a cascaded multi-level array substrate row driving unit, wherein:
- the n-th array substrate row driving unit has the first! 1-1 level signal first Input terminal 21 (G n-1 ), second n-stage signal second input terminal 22 (ST n-1 ), n+1th level signal input terminal 23 (G n+1 ), first output terminal 27 ( G n) and the second output terminal 28 (ST n), wherein a first output terminal of the n-th row of the array substrate stage driving unit 27 (G n) for the active region of the array substrate; a second ri The first input terminal 21 (G n .i ) of the nth stage signal of the row array substrate row driving unit, the second input terminal 22 (ST n .i ) of the n- 1th stage signal, and the n+th stage signal input terminal 23 ( G n , i ) electrically connected to the first output end 27 of the row driver unit of the iI-level array substrate
- G n a second output terminal 28 (ST n) a first output terminal and the second row of the array substrate rH i stage drive unit 27 (G a), the n-th row of the array substrate stage driving unit of the first output terminal 27 (G n ) electrically connected to the input terminal 21 ( G n ..i ) of the n 1th stage signal of the ri+1 stage array base driving unit and the n 1st stage array substrate driving unit
- the second output end 28 ( ST n ) of the n-th array substrate row driving unit is electrically connected to the n-th level signal of the n+i-th array substrate driving unit Input 22 ( ST n- i );
- the n-th array substrate row driving unit has the first input terminal 21 (G n . , ) of the n-1th order signal, a second input terminal 22 (ST n .i ), an n+1th signal input terminal 23 (G nH ), a first output terminal 27 (G n ), and a second output terminal 28 (ST n )
- the first output end 27 (G n ) of the n-th array substrate row driving unit is used to drive the active region of the array substrate; the n-th stage of the n-th array substrate row driving unit
- the signal input terminal 21 (G ni :) and the n-1th signal second input terminal 22 (STn.i:) are both used to input a pulse activation signal, and the n+1th level signal input terminal 23 (G n - H ) electrically connecting the first output end 27 of the n+1th array substrate row driving unit 27 ⁇ G u
- the n-th array substrate row driving unit For the nth -level array substrate row driving unit located at the penultimate stage of the array substrate row driving circuit, the n-th array substrate row driving unit has the nth-level signal first input terminal 21 (G Thread.i), Level 11-1 signal second input 22 (ST n-! ), n+ 1th signal input 23 (G aH ), first output 27 (G trash) and second output 28 (ST n
- the first input terminal 21 (G n-1 ) and the second input terminal 22 ( 8 ⁇ ⁇ - ⁇ ) of the nth-level signal of the n-th array substrate row driving unit are electrically connected to the ⁇ -1, respectively.
- the first output end 27 (G n ) of the n-th array substrate row driving unit is electrically connected to the n-th order array substrate row driving list Element of n- + - i-level signal input terminal 23 (G 11 + 1) and a second output terminal 28 (ST n) is set to any of the suspension on the array substrate to the first row driving circuit of the inverse of the first stage
- the second-level array substrate row driving unit further has a clock signal first input terminal 24, a first low-level input terminal 25, and a second low-level input terminal 26,
- the first low level input terminal 25 is for inputting a first low level V ss [
- the second low level input terminal 26 is for inputting a second low
- the 'up pull control element 42' and the n-th stage signal are the second stage of the nth stage signal
- the two input terminals 22 are electrically connected;
- the pull-up unit 44 is electrically connected to the pull-up control unit 42 and the clock signal first input terminal 24, the first output terminal 27 and the second output terminal 28;
- the first pull-down maintaining unit 46 is electrically connected to the first low level input terminal 25, the second low level input terminal 26, the pull-up control unit 42 and the pull-up unit 44, respectively;
- the second pull-down maintaining unit 47 is electrically connected to the first low level input terminal 25, the second low level input terminal 26, the first pull-down maintaining unit 46, the pull-up control unit 42 and the pull-up unit 44, respectively;
- the pull-down unit 48 is respectively connected to the ri+l-stage signal input terminal 23, the first low-level input terminal 25, the pull-up control unit 42, the pull-up unit 44, the first pull-down maintaining unit 46, and the second pull-down maintaining unit 47.
- the first output terminal 27 is electrically connected.
- the n-th array substrate row driving unit of the array substrate row driving circuit further has a clock signal second input terminal 31 and a clock signal third input terminal 32.
- the input signal of the first input terminal 24 of the clock signal is the first clock signal CK1 or the second clock signal CK2, and the input signal of the second input terminal 3!
- the clock signal of the 11th stage array substrate driving unit of the array substrate row driving circuit of the array circuit board driving circuit The input signal of the first input terminal 24 is the second clock signal CK2.
- the pull-up control unit 42 is a first thin film transistor T1, the first thin film transistor T1 has a first gate gl, a first source si, and a first drain dl, and the first gate gl is electrically Connected to the second input terminal 22 of the 11-1th stage signal, the first source Si is electrically connected to the n-1th stage
- the first input terminal 21 is electrically connected to the first and second pull-down maintaining units 46, 47, the pull-down unit 48, and the pull-up unit 44, respectively.
- the pull-up unit 44 includes a capacitor C b , a second thin film transistor T2 , and a third thin film transistor T3 .
- the second thin film transistor T2 has a second gate g2 , a second source s2 , and a second drain d2 .
- the third thin film transistor T3 has a third gate g3, a third source s3 and a third drain d3, and the second cabinet g2 is respectively connected to one end of the capacitor C b , the first drain dl, and the third cabinet
- the first and second pull-down maintaining units 46.47 and the pull-down unit 48 are electrically connected to each other, and the second source s2 is electrically connected to the third source s3 and the first signal input terminal 24 of the clock signal, respectively.
- the second drain (12 is electrically connected to the second output 28, the third drain ⁇ 13 is respectively connected to the first output terminal 27, the first.
- the second pull-down maintaining unit 46, 47, the pull-down unit 48, and the capacitor Cb The other end is electrically connected.
- the pull-down unit 48 includes fourth and fifth thin film transistors T4 and ⁇ 5, and the fourth thin film transistor ⁇ 4 has a fourth gate g4, a fourth source s4 and a fourth drain d4, and the fifth thin film transistor T5 has The fifth gate g5, the fifth source s5, and the fifth drain. d5, the fourth gate g4 is electrically connected to the fifth drain g5 and the n-th grade signal input end 23, respectively.
- the fourth source s4 is electrically connected to the first low level input terminal and the fifth source s5, respectively, and the fourth drain d4 is respectively connected to the first drain capacitor (the end of the ⁇ 2, the second bridge g2, the third The gate g3 and the first and second pull-down maintaining units 46 and 47 are electrically connected, and the fifth drain d5 is respectively connected to the first output terminal 27, the third source s3, the other end of the capacitor Cb , and the first The second pull-down maintaining units 46, 47 are electrically connected.
- the first pull-down maintaining unit 46 includes sixth to ninth thin film transistors T6, ⁇ 7, ⁇ 8.
- the sixth thin film transistor T6 has a sixth gate g6, a sixth source s6, and a sixth drain d6, and the seventh thin film transistor T7 has a seventh gate ' 8 ', a seventh source s7, and a seventh drain d7, the eighth thin film transistor has an eighth cabinet g8, an eighth source s8, and an eighth drain d8, wherein the ninth thin film transistor has a ninth gate g9, a ninth source s9, and
- the ninth drain d9, the sixth tree pole g6 and the sixth source s6 are both connected to the clock signal second input terminal 31, and the sixth drain d6 is respectively connected to the pull-down point Pn and the seventh drain d7.
- the eighth gate g8 and the ninth gate g9 are electrically connected, and the seventh gate g7 is respectively connected to the first drain d1, the ninth drain d9, one end of the capacitor Cb , the second gate g2, and the third
- the slab-electrode g3, the fourth drain d4, and the second pull-down maintaining unit 47 are electrically connected, and the seventh source s7 is electrically connected to the second low-level input terminal 26, and the eighth drain d8 is respectively the other end of the capacitance C b
- the second pull-down maintenance unit (G n) is electrically connected to a first output terminal 47 and 27, the eighth source electrode 25 is electrically connected to s8 a first input terminal of a low level, the S9 ninth source 25 and the first low level electrical input terminal is connected. Connection.
- the eighth thin film transistor T8 is mainly responsible for maintaining the low potential of the first output terminal 27 (G n ), and the ninth thin film transistor T9 is mainly responsible for maintaining the low potential of the pull-down point 3 ⁇ 4, and the seventh thin film transistor T7 is mainly responsible for being at the 3 ⁇ 4 Pull down point when high? And at low potential, and off
- the first pull-down maintaining unit 46 prevents the influence of the pull-down point Q n on the first output terminal 27 ( G n ), and the second low level V ss2 is smaller than the first low level V ssi to lower the eighth and nine films Leakage current of transistors T8 and T9.
- the second pull-down maintaining unit 47 includes tenth to thirteenth thin film transistors ⁇ 10, ⁇ ⁇ ⁇ 12, ⁇ 13, and the tenth thin film transistor T10 has a tenth gate gl 0 , a tenth source s10 and a tenth drain D10, the eleventh thin film transistor Ti l has an eleventh gate gl i , an eleventh source sl l and an eleventh drain di i , and the twelfth thin film transistor T12 has a twelfth drain Gl2, the twelfth source sl2 and the twelfth drain dl2, the thirteenth thin film transistor T13 has a thirteenth gate gl3, a thirteenth source sl3 and a thirteenth drain dl3, the tenth
- the gate glO and the tenth source s10 are both connected to the third input terminal 32 of the clock signal, and the tenth drain dliO is respectively connected to the pull
- the twelfth thin film transistor T12 is mainly responsible for maintaining a low potential of the first output terminal 27 (G u ), and the thirteenth thin film transistor T13 is mainly responsible for maintaining a low potential of the pull-down point Q n , and the eleventh thin film transistor T11 is mainly Is it responsible for making the pull-down point when the 3 ⁇ 4 is high? !1 and 1 ⁇ are at a low potential, and the second pull-down maintaining unit 47 is turned off to prevent the pull-down point Q n from affecting the output terminal 27 (the effect of GJ, 3 ⁇ 4 second low level 1 ⁇ 4 3 ⁇ 42 is less than the first low level V Ssi can reduce the leakage current of J 12 and thirteen thin film transistors T12 and T13.
- the signals CK1 and CK2 refer to the opposite two clock signals during the high 3 ⁇ 4J sample time.
- the second low level V ss2 is smaller than the first low level ⁇ 0 and (3 11 ⁇ 1 is the phase '
- the output signal of the second output terminal 27 of the row array substrate row driving unit can be seen that 3 ⁇ 4 and 0 will be pulled to the low potential of V ssl , and ?
- the first pull-down maintaining unit 46 further includes a fourteenth thin film transistor T14, wherein the The fourteen thin film transistor T14 has a fourteenth gate gl4, a fourteenth source sl4, and a fourteenth drain di4, the fourteenth tree pole g!4 is connected to the third input terminal 32 of the clock signal, and the fourteenth drain di4 is respectively connected to the sixth drain d6 and the seventh drain d7,
- the octal gate g8 and the ninth gate g9 are electrically connected to each other, and the fourteenth source s14 is electrically connected to the sixth gate g6, the sixth source g6 and the second input terminal 31 of the clock signal.
- the second pull-down maintaining unit 47 further includes a fifteenth thin film transistor T15 having a fifteenth slab 'pole gl5, a fifteenth source si5, and a fifteenth drain di 5 .
- the fifteenth cabinet pole gl5 is connected to the second signal input terminal 31 of the clock signal, and the fifteenth source electrode sl5 is electrically connected to the tenth source s10, the tenth gate glO and the third input terminal 32 of the clock signal, respectively.
- the fifteenth drain (115 is electrically connected to the tenth drain dl 0> and the eleventh drain dl l twelfth gate gl2 and the thirteenth gate gl3, respectively.
- the first and second pull-down maintaining units 46, 47 improve the defects of the diode design of the original sixth thin film transistor T6 and the tenth thin film transistor T10, and add the fourteenth thin film transistor T14 and the tenth.
- Five thin film transistors T15 are responsible for the pull-down point? !1 and discharge, will quickly pull down the point? The potential of the sum is pulled to a low potential with the first clock signal CK1 or the second clock signal CK2, and the first and second pull-down maintaining units 46, 47 alternate to realize the potential of the ?
- the change of the clock signal CK1 and the second clock signal CK2 changes in height, causing an alternating action, thereby reducing the stress applied by the eighth, nine thin film transistors T8, ⁇ 9 and the twelfth thin film transistors T12, T13.
- the present embodiment is substantially the same as the embodiment shown in FIG. 7. The only difference is that:
- the second and third input terminals 3, 32 of the first and second pull-down maintaining units 46, 47 are changed to the first and second input terminals 34, 35 of the low frequency signal, and the first and second input terminals 34, 35 of the low frequency signal.
- the input signals are low frequency or ultra low frequency signals LC1 and LC2, which can reduce the power consumption of the first and second pull-down maintaining units 46, 47, because the first and second pull-down maintaining units 46, 47 are always in operation, and when the array base When the number of stages of the board driving circuit is large, the use of high frequency signals increases the power consumption of the array board row driving circuit.
- the array substrate row driving circuit of the present invention uses two low-level signals to reduce the leakage current of the thin film transistor in the pull-down sustaining unit, wherein the second low level having a lower potential is only responsible for the pull-down point? 11 and provide a low potential, the first low level of higher potential is responsible for providing a low potential for the pull-down point 3 ⁇ 4 and G n , can the pull-down point be lowered when the pull-down points 3 ⁇ 4 and 0 11 are turned on?
- the potential of 31 and 1 ⁇ is beneficial to the charging of ( ⁇ and ⁇ , and can also open the leakage circuit between two low-level signals in the circuit, greatly reducing the leakage current between the two low-level signals, and improving the array.
- the performance of the substrate row driving circuit improves the quality of the display picture, and the fourteenth thin film transistor and the fifteenth thin film transistor are added to the diode design of the original sixth thin film transistor and the tenth thin film transistor.
- the potentials of the 11 and 1 ⁇ 1 points change with the change of the first clock signal CK1 and the second clock signal CK2, causing an alternating action, thereby reducing the eighth, nine thin film transistors and the twelfth and thirteenth thin film transistors.
- the pressure function extends the service life of the array substrate driving circuit, and at the same time, the low-frequency or ultra-low frequency signal is used to control the pull-down sustaining unit, thereby effectively reducing the power consumption of the circuit.
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Abstract
Description
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US14/241,078 US9240156B2 (en) | 2013-12-20 | 2014-01-21 | Gate-driver-on-array (GOA) circuit |
JP2016539267A JP6240781B2 (ja) | 2013-12-20 | 2014-01-21 | アレイ基板行駆動回路 |
GB1607717.4A GB2534099B8 (en) | 2013-12-20 | 2014-01-21 | Gate-driver-on-array (GOA) circuit |
KR1020167014118A KR101818383B1 (ko) | 2013-12-20 | 2014-01-21 | 게이트 드라이버 온 어레이 회로 |
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CN201310712607.8 | 2013-12-20 | ||
CN201310712607.8A CN103680453B (zh) | 2013-12-20 | 2013-12-20 | 阵列基板行驱动电路 |
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JP (1) | JP6240781B2 (zh) |
KR (1) | KR101818383B1 (zh) |
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US20150279288A1 (en) | 2015-10-01 |
GB2534099A (en) | 2016-07-13 |
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JP6240781B2 (ja) | 2017-11-29 |
US9240156B2 (en) | 2016-01-19 |
GB2534099B8 (en) | 2020-12-09 |
GB2534099B (en) | 2020-11-04 |
JP2017509908A (ja) | 2017-04-06 |
CN103680453B (zh) | 2015-09-16 |
GB2534099A8 (en) | 2020-12-09 |
GB201607717D0 (en) | 2016-06-15 |
KR20160078438A (ko) | 2016-07-04 |
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