WO2016106803A1 - 用于液晶显示装置的goa电路 - Google Patents
用于液晶显示装置的goa电路 Download PDFInfo
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- WO2016106803A1 WO2016106803A1 PCT/CN2015/070320 CN2015070320W WO2016106803A1 WO 2016106803 A1 WO2016106803 A1 WO 2016106803A1 CN 2015070320 W CN2015070320 W CN 2015070320W WO 2016106803 A1 WO2016106803 A1 WO 2016106803A1
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- circuit
- pull
- transistor
- control
- scan line
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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
-
- 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
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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
-
- 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
- G09G2230/00—Details of flat display driving waveforms
-
- 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
- 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
- G09G2310/0283—Arrangement of drivers for different directions of scanning
-
- 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
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
Definitions
- the present invention relates to the field of liquid crystal display technology, and in particular to a method based on LTPS (Low-Temperature) Poly-Si) PMOS (P-channel Metal Oxide Semiconductor) GOA (Gate Driver On) for liquid crystal display devices Array, array substrate row scan drive) circuit.
- LTPS Low-Temperature
- PMOS P-channel Metal Oxide Semiconductor
- GOA Gate Driver On
- GOA is a technology that uses a conventional thin film transistor liquid crystal display array (Array) process to fabricate a gate scan drive signal circuit on an array substrate to realize a drive mode for gate progressive scan.
- Array liquid crystal display array
- LTPS low temperature polysilicon semiconductor
- TFTs thin film transistors
- GOA system On Panel
- the present invention provides a GOA circuit for a liquid crystal display device including a plurality of scanning lines, the GOA circuit including a plurality of cascaded GOA units.
- the Nth stage GOA unit controls charging of the Nth stage scan line.
- the Nth stage GOA unit includes a forward and reverse scan control circuit, a pull-up circuit, a bootstrap capacitor circuit, a pull-up control circuit, and a pull-down sustain circuit.
- a pull-down sustain circuit connects the Nth-level scan lines.
- a bootstrap capacitor circuit is coupled to the pull-down sustain circuit.
- a pull-up control circuit is coupled to the bootstrap capacitor circuit.
- a forward and reverse scan control circuit is coupled to the pull up control circuit.
- a pull-up circuit connects the bootstrap capacitor circuit.
- the pull-up circuit, the bootstrap capacitor circuit, the pull-up control circuit and the pull-down sustain circuit are connected in common to form a gate signal point.
- the pull-up circuit, the bootstrap capacitor circuit and the pull-down maintaining circuit are respectively connected to the Nth-th scan line.
- the forward and reverse scan control circuits are respectively connected to the N-1th scan line and the N+1th scan line.
- the pull-down maintenance circuit includes:
- the first transistor has a control terminal connected to its input terminal and receiving the first clock signal, and an output terminal connected to the first circuit point.
- the second transistor has a control terminal that receives the second clock signal, an input terminal connected to the high constant voltage source, and an output terminal connected to the first circuit point.
- the third transistor has a control terminal connected to the first circuit point, an input terminal connected to the high constant voltage source, and an output terminal connected to the Nth-th scan line.
- the fourth transistor has a control terminal that receives the first clock signal, an input terminal connected to the gate signal point, and an output terminal connected to the Nth-th scan line.
- a first capacitor having two ends connected to the high constant voltage source and the first circuit point.
- the forward and reverse scan control circuit comprises:
- the fifth transistor has a control terminal receiving the downlink control signal, an input terminal connected to the N-1th scan line, and an output terminal connected to the pull-up control circuit.
- the sixth transistor has a control terminal that receives the upload control signal, an input end of which is connected to the (N+1)th scan line, and an output end of which is connected to an output end of the fifth transistor and the pull-up control circuit.
- the pull-up circuit comprises:
- the seventh transistor has a control terminal connected to the gate signal point, an input terminal receiving the second clock signal, and an output terminal connected to the Nth-th scan line.
- the bootstrap capacitor circuit comprises:
- a second capacitor having two ends connected to the gate signal point and the Nth stage scan line.
- the pull-up control circuit includes:
- An eighth transistor receives the second clock signal and a control terminal connected to the first transistor, and an input end thereof is connected to an output end of the fifth transistor and an output end of the sixth transistor, and an output end thereof The gate signal point is connected.
- the first clock signal and the second clock signal are mutually inverted signals.
- the first to eighth transistors are PMOS transistors.
- the high-potential maintenance of the N-th scan line and the pull-down and pull-up maintenance function of the gate signal point are realized by the first clock signal and the first capacitor and the second capacitor. And performing a pull-down function of the gate signal point and the Nth-th scan line by a perfect cooperation of the second clock signal and the first capacitor and the second capacitor. With such a perfect combination, the use of signal lines and the number of transistors in the circuit are reduced.
- FIG. 1 is a circuit diagram of a GOA in the present invention.
- FIG. 2 is a waveform diagram of key nodes of the GOA circuit of FIG. 1 in actual operation.
- the liquid crystal display device includes a plurality of scan lines, and the GOA circuit includes a plurality of cascaded GOA units.
- the Nth stage GOA unit controls charging of the Nth scan line of the display area.
- the Nth stage GOA unit includes a forward and reverse scan control circuit (100), a pull-up circuit (200), a bootstrap capacitor circuit (300), a pull-up control circuit (400), and a pull-down sustain circuit (500).
- a pull-down sustain circuit (500) is connected to the Nth-order scan line (G(N)).
- a bootstrap capacitor circuit (300) is coupled to the pull-down sustain circuit (500).
- a pull-up control circuit (400) is coupled to the bootstrap capacitor circuit (300).
- a forward and reverse scan control circuit (100) is coupled to the pull up control circuit (400).
- a pull-up circuit (200) is coupled to the bootstrap capacitor circuit (300).
- the pull-up circuit (200), the bootstrap capacitor circuit (300), the pull-up control circuit (400), and the pull-down maintaining circuit (500) are connected in common to form a gate signal point (Q(N) ).
- the pull-up circuit (200), the bootstrap capacitor circuit (300), and the pull-down maintaining circuit (500) are respectively connected to the Nth-th scan line (G(N)).
- the forward/reverse scan control circuit (100) is connected to the N-1th scanning line (G(N-1)) and the N+1th scanning line (G(N+1)), respectively.
- the pull-down maintaining circuit (500) includes:
- the first transistor (T4) has a control terminal connected to its input terminal and receiving the first clock signal (XCK), and an output terminal connected to the first circuit point (P(N)).
- a second transistor (T6) having a control terminal receiving the second clock signal (CK), an input terminal connected to the high constant voltage source (VGH), and an output terminal connected to the first circuit point (P(N) ).
- a third transistor (T8) having a control terminal connected to the first circuit point (P(N)), an input terminal connected to the high constant voltage source (VGH), and an output terminal connected to the Nth-level scan line ( G(N)).
- a fourth transistor (T5) having a control terminal receiving the second clock signal (CK), an input terminal connected to the gate signal point (Q(N)), and an output terminal connected to the Nth-level scan line ( G(N)).
- the first capacitor (C2) has two ends connected to the high constant voltage source (VGH) and the first circuit point (P(N)).
- the forward and reverse scan control circuit (100) includes a fifth transistor (T1) and a sixth transistor (T2).
- the fifth transistor (T1) has a control terminal receiving the downlink control signal (U2D), an input terminal connected to the N-1th scan line (G(N-1)), and an output terminal connected thereto.
- the pull-up control circuit (400) is described.
- the sixth transistor (T2) has a control terminal receiving the upload control signal (D2U), an input end of which is connected to the (N+1)th scan line (G(N+1)), and an output end thereof is connected to the An output of the fifth transistor (T1) and the pull-up control circuit (400).
- the forward and reverse scan control circuit (100) is responsible for the forward and reverse scanning of the circuit, and the control function of the pull-up signal is responsible for the inter-stage transfer of the circuit inside the circuit.
- the pull-up circuit (200) includes a seventh transistor (T7) whose control terminal is connected to the gate signal point (Q(N)), and an input terminal thereof receives the second clock signal (CK), and an output terminal thereof The Nth scanning line (G(N)) is connected.
- the bootstrap capacitor circuit (300) includes a second capacitor (C1) connected at both ends to the gate signal point (Q(N)) and the Nth-th scan line (G(N)).
- the pull-up control circuit (400) includes an eighth transistor (T3), and its control terminal receives the second clock signal (XCK) And a control terminal connected to the first transistor (T4), an input end of which is connected to an output end of the fifth transistor (T1) and an output end of the sixth transistor (T2), and an output end thereof is connected to the gate Signal point (Q(N)).
- the first to eighth transistors are PMOS TFTs. Its control terminal refers to the gate, its input refers to the source, and its output refers to the drain.
- the pull-up circuit (200) is responsible for the second clock signal (CK) output, and the Nth-level scan required for effective output after the gate signal point (Q(N)) potential is reasonably controlled Line (G(N)) drive waveform; here a special design is used to utilize the fourth transistor (T5) to turn the gate signal point (Q(N)) with the Nth-order scan line (G( N)) connected together, using the second clock signal (CK) for control; when the second clock signal (CK) is low, when the circuit pulls down, the Nth scan line (G(N) )) is in communication with the gate signal point (Q(N)) to stabilize the gate signal point (Q(N)) while increasing the driving capability of the output.
- the second transistor (T6) When the second clock signal (CK) is low, the second transistor (T6) is turned on, and the first capacitor (C2) storage terminal is pulled high; at this time, the three transistors (T8) are turned off, so that the Nth The output of the stage scan line (G(N)) is not affected by the high constant voltage source (VGH).
- the pull-up control circuit (400) is responsible for pulling down and raising the potential of the gate signal point (Q(N)) of the circuit to ensure smooth output of the second clock signal (CK), and the gate signal point ( The potential treatment of Q(N)) is the key to the circuit, and it will directly determine the performance of the circuit and the display of the panel.
- the Nth scan line (G(N)) signal is used to control the upper and lower levels.
- the high constant voltage source (VGH) is a high voltage of constant voltage DC
- the first clock signal (XCK) and the second clock signal (CK) are a set of reciprocal clock signals.
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (16)
- 一种用于液晶显示装置的GOA 电路,所述液晶显示装置包括多条扫描线,所述GOA电路包含级联的多个GOA单元,其中第N级GOA单元控制对第N级扫描线(G(N))充电,其中该第N级GOA单元包括:下拉维持电路(500),连接所述第N级扫描线(G(N));自举电容电路(300),连接所述下拉维持电路(500);上拉控制电路(400),连接所述自举电容电路(300);正反向扫描控制电路(100),连接所述上拉控制电路(400);及上拉电路(200),连接所述自举电容电路(300);其中所述上拉电路(200)、所述自举电容电路(300)、所述上拉控制电路(400)及所述下拉维持电路(500)共同连接构成一栅极信号点(Q(N));所述上拉电路(200)、所述自举电容电路(300)及所述下拉维持电路(500)分别与所述第N级扫描线(G(N))连接;所述正反向扫描控制电路(100)分别与第N-1级扫描线(G(N-1))以及第N+1级扫描线(G(N+1))连接;所述下拉维持电路(500)包括:第一晶体管(T4),其控制端连接其输入端及接收第一时钟信号(XCK),其输出端连接第一电路点(P(N));第二晶体管(T6),其控制端接收第二时钟信号(CK),其输入端连接高恒压源(VGH),其输出端连接所述第一电路点(P(N));第三晶体管(T8),其控制端连接所述第一电路点(P(N)),其输入端连接所述高恒压源(VGH),其输出端连接所述第N级扫描线(G(N));第四晶体管(T5),其控制端接收所述第二时钟信号(CK),其输入端连接所述栅极信号点(Q(N)),其输出端连接所述第N级扫描线(G(N));第一电容(C2),其两端连接所述高恒压源(VGH)及所述第一电路点(P(N)),所述正反向扫描控制电路(100)包括:第五晶体管(T1),其控制端接收下传控制信号(U2D),其输入端连接所述第N-1级扫描线(G(N-1)),其输出端连接所述上拉控制电路(400);第六晶体管(T2),其控制端接收上传控制信号(D2U),其输入端连接所述第N+1级扫描线(G(N+1)),其输出端连接所述第五晶体管(T1)的输出端以及所述上拉控制电路(400),所述第一时钟信号(XCK)与所述第二时钟信号(CK)互为反向信号。
- 如权利要求1 所述的用于液晶显示装置的GOA 电路,其中 所述上拉电路(200)包括:第七晶体管(T7),其控制端连接所述栅极信号点(Q(N)),其输入端接收所述第二时钟信号(CK),其输出端连接所述第N级扫描线(G(N))。
- 如权利要求1 所述的用于液晶显示装置的GOA 电路,其中 所述自举电容电路(300)包括:第二电容(C1),其两端连接所述栅极信号点(Q(N))以及所述第N级扫描线(G(N))。
- 如权利要求1 所述的用于液晶显示装置的GOA 电路其中 ,所述上拉控制电路(400)包括:第八晶体管(T3),其控制端接收所述第一时钟信号(XCK)及连接所述第一晶体管(T4)的控制端,其输入端连接所述第五晶体管(T1)的输出端以及所述第六晶体管(T2)的输出端,其输出端连接所述栅极信号点(Q(N))。
- 一种用于液晶显示装置的GOA 电路,所述液晶显示装置包括多条扫描线,所述GOA电路包含级联的多个GOA单元,其中第N级GOA单元控制对第N级扫描线(G(N))充电,其中该第N级GOA单元包括:下拉维持电路(500),连接所述第N级扫描线(G(N));自举电容电路(300),连接所述下拉维持电路(500);上拉控制电路(400),连接所述自举电容电路(300);正反向扫描控制电路(100),连接所述上拉控制电路(400);及上拉电路(200),连接所述自举电容电路(300);其中所述上拉电路(200)、所述自举电容电路(300)、所述上拉控制电路(400)及所述下拉维持电路(500)共同连接构成一栅极信号点(Q(N));所述上拉电路(200)、所述自举电容电路(300)及所述下拉维持电路(500)分别与所述第N级扫描线(G(N))连接;所述正反向扫描控制电路(100)分别与第N-1级扫描线(G(N-1))以及第N+1级扫描线(G(N+1))连接;所述下拉维持电路(500)包括:第一晶体管(T4),其控制端连接其输入端及接收第一时钟信号(XCK),其输出端连接第一电路点(P(N));第二晶体管(T6),其控制端接收第二时钟信号(CK),其输入端连接高恒压源(VGH),其输出端连接所述第一电路点(P(N));第三晶体管(T8),其控制端连接所述第一电路点(P(N)),其输入端连接所述高恒压源(VGH),其输出端连接所述第N级扫描线(G(N));第四晶体管(T5),其控制端接收所述第二时钟信号(CK),其输入端连接所述栅极信号点(Q(N)),其输出端连接所述第N级扫描线(G(N));第一电容(C2),其两端连接所述高恒压源(VGH)及所述第一电路点(P(N)),所述正反向扫描控制电路(100)包括:第五晶体管(T1),其控制端接收下传控制信号(U2D),其输入端连接所述第N-1级扫描线(G(N-1)),其输出端连接所述上拉控制电路(400);第六晶体管(T2),其控制端接收上传控制信号(D2U),其输入端连接所述第N+1级扫描线(G(N+1)),其输出端连接所述第五晶体管(T1)的输出端以及所述上拉控制电路(400)。
- 如权利要求5 所述的用于液晶显示装置的GOA 电路,其中 所述上拉电路(200)包括:第七晶体管(T7),其控制端连接所述栅极信号点(Q(N)),其输入端接收所述第二时钟信号(CK),其输出端连接所述第N级扫描线(G(N))。
- 如权利要求5 所述的用于液晶显示装置的GOA 电路,其中 所述自举电容电路(300)包括:第二电容(C1),其两端连接所述栅极信号点(Q(N))以及所述第N级扫描线(G(N))。
- 如权利要求5 所述的用于液晶显示装置的GOA 电路,其中 所述上拉控制电路(400)包括:第八晶体管(T3),其控制端接收所述第一时钟信号(XCK)及连接所述第一晶体管(T4)的控制端,其输入端连接所述第五晶体管(T1)的输出端以及所述第六晶体管(T2)的输出端,其输出端连接所述栅极信号点(Q(N))。
- 如权利要求5 所述的用于液晶显示装置的GOA 电路,其中 所述第一时钟信号(XCK)与所述第二时钟信号(CK)互为反向信号。
- 一种用于液晶显示装置的GOA 电路,所述液晶显示装置包括多条扫描线,所述GOA电路包含级联的多个GOA单元,其中第N级GOA单元控制对第N级扫描线(G(N))充电,其中 该第N级GOA单元包括:下拉维持电路(500),连接所述第N级扫描线(G(N));自举电容电路(300),连接所述下拉维持电路(500);上拉控制电路(400),连接所述自举电容电路(300);正反向扫描控制电路(100),连接所述上拉控制电路(400);及上拉电路(200),连接所述自举电容电路(300);其中所述上拉电路(200)、所述自举电容电路(300)、所述上拉控制电路(400)及所述下拉维持电路(500)共同连接构成一栅极信号点(Q(N));所述上拉电路(200)、所述自举电容电路(300)及所述下拉维持电路(500)分别与所述第N级扫描线(G(N))连接;所述正反向扫描控制电路(100)分别与第N-1级扫描线(G(N-1))以及第N+1级扫描线(G(N+1))连接;所述下拉维持电路(500)包括:第一晶体管(T4),其控制端连接其输入端及接收第一时钟信号(XCK),其输出端连接第一电路点(P(N));第二晶体管(T6),其控制端接收第二时钟信号(CK),其输入端连接高恒压源(VGH),其输出端连接所述第一电路点(P(N));第三晶体管(T8),其控制端连接所述第一电路点(P(N)),其输入端连接所述高恒压源(VGH),其输出端连接所述第N级扫描线(G(N));第四晶体管(T5),其控制端接收所述第二时钟信号(CK),其输入端连接所述栅极信号点(Q(N)),其输出端连接所述第N级扫描线(G(N));一电容(C2),其两端连接所述高恒压源(VGH)及所述第一电路点(P(N))。
- 如权利要求10 所述的用于液晶显示装置的GOA 电路,其中所述正反向扫描控制电路(100)包括:第五晶体管(T1),其控制端接收下传控制信号(U2D),其输入端连接所述第N-1级扫描线(G(N-1)),其输出端连接所述上拉控制电路(400);第六晶体管(T2),其控制端接收上传控制信号(D2U),其输入端连接所述第N+1级扫描线(G(N+1)),其输出端连接所述第五晶体管(T1)的输出端以及所述上拉控制电路(400)。
- 如权利要求10 所述的用于液晶显示装置的GOA 电路,其中所述上拉电路(200)包括:第七晶体管(T7),其控制端连接所述栅极信号点(Q(N)),其输入端接收所述第二时钟信号(CK),其输出端连接所述第N级扫描线(G(N))。
- 如权利要求10 所述的用于液晶显示装置的GOA 电路,其中所述自举电容电路(300)包括:第二电容(C1),其两端连接所述栅极信号点(Q(N))以及所述第N级扫描线(G(N))。
- 如权利要求10 所述的用于液晶显示装置的GOA 电路,其中所述上拉控制电路(400)包括:第八晶体管(T3),其控制端接收所述第一时钟信号(XCK)及连接所述第一晶体管(T4)的控制端,其输入端连接所述第五晶体管(T1)的输出端以及所述第六晶体管(T2)的输出端,其输出端连接所述栅极信号点(Q(N))。
- 如权利要求10 所述的用于液晶显示装置的GOA 电路,其中所述第一时钟信号(XCK)与所述第二时钟信号(CK)互为反向信号。
- 如权利要求1-15 所述的用于液晶显示装置的GOA 电路,其中所述第一至第八晶体管是PMOS晶体管。
Priority Applications (5)
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| GB1711615.3A GB2550508B (en) | 2014-12-30 | 2015-01-08 | Goa circuit applied to liquid crystal display device |
| KR1020177020841A KR20170102283A (ko) | 2014-12-30 | 2015-01-08 | 액정 디스플레이 장치에 적용되는 게이트 구동 회로 |
| EA201791512A EA033137B1 (ru) | 2014-12-30 | 2015-01-08 | Схема goa для жидкокристаллического дисплейного устройства |
| US14/418,080 US20160189647A1 (en) | 2014-12-30 | 2015-01-08 | Goa circuit applied to liquid crystal display device |
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| CN201410844668.4A CN104537992B (zh) | 2014-12-30 | 2014-12-30 | 用于液晶显示装置的goa电路 |
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| JP (1) | JP2018507433A (zh) |
| KR (1) | KR20170102283A (zh) |
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| EA (1) | EA033137B1 (zh) |
| GB (1) | GB2550508B (zh) |
| WO (1) | WO2016106803A1 (zh) |
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| CN108615494A (zh) * | 2016-12-13 | 2018-10-02 | 乐金显示有限公司 | 移位寄存器和包括移位寄存器的栅极驱动器及显示装置 |
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| GB201711615D0 (en) | 2017-08-30 |
| EA033137B1 (ru) | 2019-08-30 |
| US20160189647A1 (en) | 2016-06-30 |
| CN104537992A (zh) | 2015-04-22 |
| KR20170102283A (ko) | 2017-09-08 |
| CN104537992B (zh) | 2017-01-18 |
| GB2550508A (en) | 2017-11-22 |
| JP2018507433A (ja) | 2018-03-15 |
| GB2550508B (en) | 2020-12-16 |
| EA201791512A1 (ru) | 2017-11-30 |
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