WO2017049660A1 - 扫描驱动电路及具有该电路的液晶显示装置 - Google Patents
扫描驱动电路及具有该电路的液晶显示装置 Download PDFInfo
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- WO2017049660A1 WO2017049660A1 PCT/CN2015/091069 CN2015091069W WO2017049660A1 WO 2017049660 A1 WO2017049660 A1 WO 2017049660A1 CN 2015091069 W CN2015091069 W CN 2015091069W WO 2017049660 A1 WO2017049660 A1 WO 2017049660A1
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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
- 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
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- 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
- G09G2300/0871—Several active elements per pixel in active matrix panels with level shifting
-
- 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
-
- 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
- G09G2310/0281—Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
-
- 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
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0291—Details of output amplifiers or buffers 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 display technologies, and in particular, to a scan driving circuit and a liquid crystal display device having the same.
- a scan driving circuit is used, that is, a conventional thin film transistor liquid crystal display array process is used to fabricate a scan driving circuit on an array substrate to realize a driving method for progressive scanning.
- the existing scan driving circuit needs to reset and clear the control signal point and the scan driving signal by using the reset signal. If the control signal point has a positive charge residual during the previous frame operation, the control signal point will remain high. The level makes the thin film transistor controlled by the control signal point compete with the thin film transistor controlled by the reset signal, so that the reset signal cannot work normally, and the control signal point and the scan drive signal cannot be normally reset and cleared, which may cause the scan drive circuit to fail. .
- the technical problem to be solved by the present invention is to provide a scan driving circuit and a liquid crystal display device having the same, which can realize resetting and clearing of control signal points and scan driving signals, thereby avoiding failure of the scan driving circuit.
- a technical solution adopted by the present invention is to provide a scan driving circuit, including:
- An input module configured to receive the upper control signal, the first and second clock signals, and operate the upper control signal, the first and second clock signals to obtain a first control signal and to the first control signal Output
- a reset module connected to the input module, configured to receive a reset signal and clear a control signal point of the scan driving circuit according to the reset signal;
- a latching module configured to receive a first control signal output by the input module, receive the first and second clock signals, and perform operations on the first control signal, the first and second clock signals to obtain a second control signal and latching and outputting the second control signal;
- a logic processing module connected to the latch module, configured to receive a second control signal output by the latch module and receive a third clock signal, and perform logic operations on the second control signal and the third clock signal Obtaining a logic control signal and outputting the logic control signal;
- An output module connected to the logic processing module, configured to receive a logic control signal output by the logic processing module, and operate the logic control signal to obtain a scan driving signal, and output the scan driving signal;
- a scan line connected to the output module, configured to transmit a scan driving signal output by the output module to the pixel unit.
- the input module includes first to fourth controllable switches and a first inverter, and a control end of the first controllable switch is connected to the first clock signal, and an input end of the first controllable switch Connecting the open voltage terminal, the output end of the first controllable switch is connected to the input end of the second controllable switch, and the control end of the second controllable switch is connected to the upper control signal and the third a control end of the controllable switch, an output end of the second controllable switch is connected to an output end of the reset module, the latch module and the third controllable switch, and an input end of the third controllable switch Connecting the output end of the fourth controllable switch, the input end of the fourth controllable switch is connected to the closed voltage end, and the control end of the fourth controllable switch is connected to the second clock signal, the first reverse The input end of the phase converter is connected to the second clock signal, and the output end of the first inverter is connected to the first clock signal.
- the reset module includes a fifth controllable switch, the control end of the fifth controllable switch is connected to the reset signal, and the input end of the fifth controllable switch is connected to the open voltage end, the fifth An output of the controllable switch is coupled to an output of the second and third controllable switches and to the latch module.
- the latch module includes sixth to tenth controllable switches and an inverter, and a control end of the sixth controllable switch is connected to the second clock signal, and an input end of the sixth controllable switch is connected
- the output end of the sixth controllable switch is connected to the input end of the seventh controllable switch, and the control end of the seventh controllable switch is connected to the control end of the eighth controllable switch,
- the control signal point and the logic processing module the output end of the seventh controllable switch is connected to the output end of the eighth controllable switch, the output end of the fifth controllable switch, and the second
- An output end of the eighth controllable switch is connected to an output end of the ninth controllable switch, and an input end of the ninth controllable switch is connected to the closed voltage end,
- the ninth a control end of the control switch is connected to an output end of the tenth controllable switch, a control end of the tenth controllable switch is connected to the reset signal, and an input end of the tenth
- the latch module includes sixth to tenth controllable switches and a second inverter, and the control end of the sixth controllable switch is connected to the second clock signal, and the input of the sixth controllable switch
- the end of the sixth controllable switch is connected to the input end of the seventh controllable switch, and the control end of the seventh controllable switch is connected to the control of the eighth controllable switch
- An output end of the seventh controllable switch is connected to an output end of the eighth controllable switch, an output end of the fifth controllable switch, and the first end, the control signal point and the logic processing module
- An output end of the second controllable switch, an input end of the eighth controllable switch is connected to an output end of the ninth controllable switch, and an input end of the ninth controllable switch is connected to an input of the tenth controllable switch
- the control end of the ninth controllable switch is connected to the first clock end, the control end of the tenth controllable switch is connected to the reset signal, and the input end
- the latch module includes sixth to ninth controllable switches and an AND gate, wherein a control end of the sixth controllable switch is connected to the second clock signal, and an input end of the sixth controllable switch is connected An output terminal of the sixth controllable switch is connected to an input end of the seventh controllable switch, and a control end of the seventh controllable switch is connected to a control end of the eighth controllable switch a control signal point and the logic processing module, wherein an output end of the seventh controllable switch is connected to an output end of the eighth controllable switch, an output end of the fifth controllable switch, and the second controllable An output end of the switch, an input end of the eighth controllable switch is connected to an output end of the ninth controllable switch, an input end of the ninth controllable switch is connected to the closed voltage end, and the ninth controllable a control end of the switch is connected to the output end of the AND gate, a first input end of the AND gate is connected to the reset signal, and a second input end of the AND gate is
- the logic processing module includes eleventh to fourteenth controllable switches, and an input end of the eleventh controllable switch is connected to an input end of the twelfth controllable switch, and the eleventh controllable a control end of the switch is connected to the control point and a control end of the thirteenth controllable switch, and an output end of the eleventh controllable switch is connected to an output end of the twelfth controllable switch, the output module And the input end of the thirteenth controllable switch, the control end of the twelfth controllable switch is connected to the third clock signal and the control end of the fourteenth controllable switch, the thirteenth An output end of the control switch is connected to an input end of the fourteenth controllable switch, and an input end of the fourteenth controllable switch is connected to the closed voltage end.
- the output module includes third to fifth inverters, and an input end of the third inverter is connected to an output end of the eleventh and thirteenth controllable switches, the third inverter An output of the fourth inverter is coupled to an input of the fourth inverter, an output of the fourth inverter is coupled to an input of the fifth inverter, and an output of the fifth inverter is coupled to the Scan line.
- the first controllable switch, the second controllable switch, the fifth to seventh controllable switches, the eleventh controllable switch, and the twelfth controllable switch are PMOS type films
- the transistor, the third controllable switch, the fourth controllable switch, the eighth to tenth controllable switch, the thirteenth controllable switch, and the fourteenth controllable switch are NMOS type films Transistor.
- another technical solution adopted by the present invention is to provide a liquid crystal display device comprising the scan driving circuit as described above.
- the beneficial effects of the present invention are: different from the prior art, the scan driving circuit of the present invention, when the reset module is in operation, the reset signal is at a low level, thereby controlling the fifth controllable switch to be turned on, In this case, regardless of the potential of the control signal point and the first clock signal, the closed voltage terminal can be not provided to the control signal point, thereby implementing the control signal point and the The reset of the scan drive signal is cleared to avoid causing the scan drive circuit to fail.
- FIG. 1 is a schematic structural view of a scan driving circuit of a first embodiment of the present invention
- FIG. 2 is a schematic structural view of a scan driving circuit of a second embodiment of the present invention.
- FIG. 3 is a schematic structural view of a scan driving circuit of a third embodiment of the present invention.
- Figure 5 is a timing chart showing the operation of the scan driving circuit of the present invention.
- Fig. 6 is a schematic view of a liquid crystal display device of the present invention.
- FIG. 1 is a schematic structural diagram of a scan driving circuit according to a first embodiment of the present invention.
- the scan driving circuit 1 of the present invention includes an input module 100 for receiving a superior control signal, first and second clock signals, and performing the upper control signal, the first and second clock signals.
- a reset module 200 connected to the input module 100, for receiving a reset signal and controlling a signal point of the scan driving circuit according to the reset signal Clearing;
- the latch module 300 is configured to receive the first control signal output by the input module 100 and receive the first and second clock signals and to the first control signal, the first and second The clock signal is operated to obtain a second control signal and the second control signal is latched and outputted;
- the logic processing module 400 is connected to the latch module 300 for receiving the second output of the latch module 300 Controlling a signal and receiving a third clock signal and performing a logic operation on the second control signal and the third clock signal to obtain a logic control signal and output the logic control signal
- the output module 500 is connected to the logic processing module 400 for receiving the logic control signal output by the logic processing module 400 and operating the logic control signal to obtain a scan driving signal, and outputting the scan driving signal; And a scan line connected to the output module 500 for transmitting the scan driving signal output by the output module 500 to the pixel unit
- the input module 100 includes first to fourth controllable switches T1-T4 and a first inverter U1.
- the control end of the first controllable switch T1 is connected to the first clock signal, and the first controllable
- the input end of the switch T1 is connected to the open voltage terminal VGH
- the output end of the first controllable switch T1 is connected to the input end of the second controllable switch T2
- the control end of the second controllable switch T2 is connected
- the upper control signal and the control end of the third controllable switch T3, the output end of the second controllable switch T2 is connected to the reset module 200, the latch module 300, and the third controllable switch T3
- the output end of the third controllable switch T3 is connected to the output end of the fourth controllable switch T4, and the input end of the fourth controllable switch T4 is connected to the closed voltage end VGL
- the fourth a control terminal of the control switch T4 is connected to the second clock signal
- the reset module 200 includes a fifth controllable switch T5, the control end of the fifth controllable switch T5 is connected to the reset signal, and the input end of the fifth controllable switch T5 is connected to the open voltage terminal VGH.
- An output end of the fifth controllable switch T5 is connected to an output end of the second and third controllable switches T2 and T3 and the latch module 300.
- the latch module 300 includes sixth to tenth controllable switches T6-T10 and an inverter U2, and a control end of the sixth controllable switch T6 is connected to the second clock signal, and the sixth controllable switch An input end of the T6 is connected to the open voltage terminal VGH, an output end of the sixth controllable switch T6 is connected to an input end of the seventh controllable switch T7, and a control end of the seventh controllable switch T7 is connected to the a control end of the eighth controllable switch T8, the control signal point, and the logic processing module 400, wherein an output end of the seventh controllable switch T7 is connected to an output end of the eighth controllable switch T8, the first An output end of the fifth controllable switch T5 and an output end of the second controllable switch T2, the input end of the eighth controllable switch T8 is connected to the output end of the ninth controllable switch T9, the ninth The input end of the control switch T9 is connected to the closed voltage terminal VGL, the control end of the ninth
- the reset signal, the input end of the tenth controllable switch T10 is connected to the first controllable switch XCK1
- An input end of the second inverter U2 is connected to an output end of the fifth controllable switch T5, and an output end of the second inverter U2 is connected to the control signal point, the seventh and eighth controllable switches
- the control terminal of T7, T8 and the logic processing module 400 is connected to the first controllable switch XCK1
- An input end of the second inverter U2 is connected to an output end of the fifth controllable switch T5
- an output end of the second inverter U2 is connected to the control signal point, the seventh and eighth controllable switches
- the control terminal of T7, T8 and the logic processing module 400 The reset signal, the input end of the tenth controllable switch T10 is connected to the first controllable switch XCK1
- An input end of the second inverter U2 is connected to an output end of the fifth controllable switch T5
- the logic processing module 400 includes eleventh to fourteenth controllable switches T11-T14, and an input end of the eleventh controllable switch T11 is connected to an input end of the twelfth controllable switch T12,
- the control end of the eleven controllable switch T11 is connected to the control point and the control end of the thirteenth controllable switch T13, and the output end of the eleventh controllable switch T11 is connected to the twelfth controllable switch T12
- the output end, the output module 500, and the input end of the thirteenth controllable switch T13, the control end of the twelfth controllable switch T12 is connected to the third clock signal and the fourteenth controllable
- the output end of the thirteenth controllable switch T13 is connected to the input end of the fourteenth controllable switch T14, and the input end of the fourteenth controllable switch T14 is connected to the closed voltage end. VGL.
- the output module 500 includes third to fifth inverters U3-U5, and an input end of the third inverter U3 is connected to an output end of the eleventh and thirteenth controllable switches T11 and T13.
- An output end of the third inverter U3 is connected to an input end of the fourth inverter U4, and an output end of the fourth inverter U4 is connected to an input end of the fifth inverter U5, the The output of the five inverter U5 is connected to the scan line.
- the upper control signal is a superior control signal Q(N-1)
- the first clock signal is a first clock signal XCK1
- the first The second clock signal is the second clock signal CK1
- the reset signal is the reset signal Reset
- the third clock signal is the third clock signal CK2
- the control signal point is the control signal point Q(N)
- the scan line It is the scan line Gate.
- the working principle of the scan driving circuit 1 of the first embodiment is as follows:
- the reset signal Reset is at a low level
- the control end of the fifth controllable switch T5 is turned on by receiving the low level signal
- the tenth controllable switch T10 is The control terminal receives the low level signal and turns off, the high level of the first clock signal XCK1 cannot act on the control end of the ninth controllable switch T9, and the ninth controllable switch T9 is turned off.
- FIG. 2 is a schematic structural diagram of a scan driving circuit according to a second embodiment of the present invention.
- the scan driving circuit of the second embodiment is different from the scan driving circuit of the first embodiment in that the latch module 300 includes sixth to tenth controllable switches T6- T10 and the second inverter U2, the control end of the sixth controllable switch T6 is connected to the second clock signal, and the input end of the sixth controllable switch T6 is connected to the open voltage terminal VGH, the first The output end of the sixth controllable switch T6 is connected to the input end of the seventh controllable switch T7, and the control end of the seventh controllable switch T7 is connected to the control end of the eighth controllable switch T8, the control signal point
- the logic processing module 400 the output end of the seventh controllable switch T7 is connected to the output end of the eighth controllable switch T8, the output end of the fifth controllable switch T5, and the second controllable An output end of the switch T2, an input end of the eighth
- the working principle of the scan driving circuit 1 of the second embodiment is as follows:
- the reset signal Reset is at a low level, and the control end of the fifth controllable switch T5 is turned on by receiving the low level signal, and the tenth controllable switch T10 is The control terminal receives the low level signal and turns off. At this time, even if the control signal point Q(N) and the high level of the first clock signal XCK1 control the eighth controllable switch T8 and the ninth The controllable switch T9 is turned on, and the off voltage terminal VGL cannot be supplied to the control signal point Q(N), so the high level of the control signal point Q(N) does not affect the reset signal Reset. Normal operation, the control signal point Q(N) will become low at the low level of the reset signal Reset, thereby completing the reset of the control signal point Q(N) point and the scan driving signal. Cleared.
- FIG. 3 is a schematic structural diagram of a scan driving circuit according to a third embodiment of the present invention.
- the scan driving circuit of the third embodiment is different from the scan driving circuit of the first embodiment in that the latch module 300 includes sixth to ninth controllable switches T6- T9 and the AND gate Y1, the control end of the sixth controllable switch T6 is connected to the second clock signal, and the input end of the sixth controllable switch T6 is connected to the open voltage terminal VGH, the sixth controllable An output end of the switch T6 is connected to an input end of the seventh controllable switch T7, and a control end of the seventh controllable switch T7 is connected to a control end of the eighth controllable switch T8, the control signal point, and the The logic processing module 400, the output end of the seventh controllable switch T7 is connected to the output end of the eighth controllable switch T8, the output end of the fifth controllable switch T5, and the second controllable switch T2 An output end of the eighth controllable switch T
- the working principle of the scan driving circuit 1 of the third embodiment is as follows:
- the reset signal Reset When the reset module 200 is in operation, the reset signal Reset is at a low level, and the control end of the fifth controllable switch T5 receives the low level signal and is turned on, the first input of the AND gate Y1 Receiving the low level signal, wherein the output of the AND gate Y1 is both the first clock signal XCK1 received by the second input terminal of the AND gate Y1 being at a high level or a low level Outputting a low level signal to the control end of the ninth controllable switch T9 to control the ninth controllable switch T9 to be turned off, at this time even if the control signal point Q(N) is controlled at a high level
- the eight controllable switch T8 is turned on, and the off voltage terminal VGL cannot be supplied to the control signal point Q(N), so the high level of the control signal point Q(N) does not affect the reset signal.
- the control signal point Q(N) will become a low potential at the low level of the reset signal Reset, thereby completing the control
- the first controllable switch T1, the second controllable switch T2, the fifth to seventh controllable switches T5-T7, the eleventh controllable switch T11 and the twelfth controllable switch T12 is a PMOS type thin film transistor
- the third controllable switch T3, the fourth controllable switch T4, the eighth to tenth controllable switch T8-T10, the thirteenth controllable switch T13 and the The fourteenth controllable switch T14 is an NMOS type thin film transistor.
- FIG. 4 is a timing diagram of the scan driving circuit 1 of the present invention to avoid the risk of competition.
- Fig. 5 is a timing chart showing the operation of the scan driving circuit 1 of the present invention.
- the reset module 200 when the reset module 200 is in operation, the reset signal Reset is at a low level, so the off voltage terminal VGL is not provided to the control signal point Q(N) ( That is, there is no competition relationship), the control signal point Q(N) and the scan drive signal can be normally pulled down, and the state of all the operating points can be maintained at a normal potential before the scan drive circuit 1 operates normally, so The scan drive circuit 1 does not present a risk of failure.
- FIG. 6 is a schematic diagram of a liquid crystal display device of the present invention.
- the liquid crystal display device includes the aforementioned scan driving circuit 1, and the scan driving circuit 1 is disposed at both ends of the liquid crystal display device.
- the reset signal When the reset driving module is operated, the reset signal is low level, thereby controlling the fifth controllable switch to be turned on, regardless of the control signal point and the first
- the potential of the clock signal can be such that the closed voltage terminal is not supplied to the control signal point, thereby realizing resetting and clearing the control signal point and the scan driving signal, thereby avoiding causing the scan driving The failure of the circuit.
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Abstract
一种扫描驱动电路(1)及液晶显示装置,所述扫描驱动电路(1)包括输入模块(100),对上级控制信号(Q(N-1))、第一及第二时钟信号(XCK1,CK1)进行运算以获得第一控制信号;复位模块(200),根据复位信号(Reset)对控制信号点(Q(N))进行清零;锁存模块(300),对第一控制信号、第一及第二时钟信号(XCK1,CK1)进行运算以获得第二控制信号;逻辑处理模块(400),对第二控制信号及第三时钟信号(CK2)进行逻辑运算以获得逻辑控制信号;输出模块(500),对逻辑控制信号进行运算以获得扫描驱动信号;扫描线(Gate),接收扫描驱动信号并传输至像素单元,以此实现控制信号点(Q(N))及扫描驱动信号的复位清零,进而避免造成扫描驱动电路(1)的失效。
Description
【技术领域】
本发明涉及显示技术领域,特别是涉及一种扫描驱动电路及具有该电路的液晶显示装置。
【背景技术】
目前的液晶显示装置中采用扫描驱动电路,也就是利用现有薄膜晶体管液晶显示器阵列制程将扫描驱动电路制作在阵列基板上,实现对逐行扫描的驱动方式。现有的扫描驱动电路在工作之前需要利用复位信号对控制信号点及扫描驱动信号进行复位清零,如果控制信号点在上一帧工作时有正电荷的残留,那么会造成控制信号点维持高电平,使得控制信号点控制的薄膜晶体管与复位信号控制的薄膜晶体管形成竞争,造成复位信号不能正常工作,控制信号点及扫描驱动信号不能进行正常的复位清零,进而可能造成扫描驱动电路失效。
【发明内容】
本发明主要解决的技术问题是提供一种扫描驱动电路及具有该电路的液晶显示装置,能够实现控制信号点及扫描驱动信号的复位清零,避免造成扫描驱动电路的失效。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种扫描驱动电路,包括:
输入模块,用于接收上级控制信号、第一及第二时钟信号并对所述上级控制信号、所述第一及第二时钟信号进行运算以获得第一控制信号并对所述第一控制信号进行输出;
复位模块,连接所述输入模块,用于接收复位信号并根据所述复位信号对所述扫描驱动电路的控制信号点进行清零;
锁存模块,用于接收所述输入模块输出的第一控制信号及接收所述第一及第二时钟信号并对所述第一控制信号、所述第一及第二时钟信号进行运算以获得第二控制信号并对所述第二控制信号进行锁存及输出;
逻辑处理模块,连接所述锁存模块,用于接收所述锁存模块输出的第二控制信号及接收第三时钟信号并对所述第二控制信号及所述第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;
输出模块,连接所述逻辑处理模块,用于接收所述逻辑处理模块输出的逻辑控制信号并对所述逻辑控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及
扫描线,连接所述输出模块,用于将所述输出模块输出的扫描驱动信号传输至像素单元。
其中,所述输入模块包括第一至第四可控开关及第一反相器,所述第一可控开关的控制端连接所述第一时钟信号,所述第一可控开关的输入端连接所述开启电压端,所述第一可控开关的输出端连接所述第二可控开关的输入端,所述第二可控开关的控制端连接所述上级控制信号及所述第三可控开关的控制端,所述第二可控开关的输出端连接所述复位模块、所述锁存模块及所述第三可控开关的输出端,所述第三可控开关的输入端连接所述第四可控开关的输出端,所述第四可控开关的输入端连接关闭电压端,所述第四可控开关的控制端连接所述第二时钟信号,所述第一反相器的输入端连接所述第二时钟信号,所述第一反相器的输出端连接所述第一时钟信号。
其中,所述复位模块包括第五可控开关,所述第五可控开关的控制端连接所述复位信号,所述第五可控开关的输入端连接所述开启电压端,所述第五可控开关的输出端连接所述第二及第三可控开关的输出端及所述锁存模块。
其中,所述锁存模块包括第六至第十可控开关及反相器,所述第六可控开关的控制端连接所述第二时钟信号,所述第六可控开关的输入端连接所述开启电压端,所述第六可控开关的输出端连接所述第七可控开关的输入端,所述第七可控开关的控制端连接所述第八可控开关的控制端、所述控制信号点及所述逻辑处理模块,所述第七可控开关的输出端连接所述第八可控开关的输出端、所述第五可控开关的输出端及所述第二可控开关的输出端,所述第八可控开关的输入端连接所述第九可控开关的输出端,所述第九可控开关的输入端连接所述关闭电压端,所述第九可控开关的控制端连接所述第十可控开关的输出端,所述第十可控开关的控制端连接所述复位信号,所述第十可控开关的输入端连接所述第一可控开关,所述第二反相器的输入端连接所述第五可控开关的输出端,所述第二反相器的输出端连接所述控制信号点、所述第七及第八可控开关的控制端及所述逻辑处理模块。
其中,所述锁存模块包括第六至第十可控开关及第二反相器,所述第六可控开关的控制端连接所述第二时钟信号,所述第六可控开关的输入端连接所述开启电压端,所述第六可控开关的输出端连接所述第七可控开关的输入端,所述第七可控开关的控制端连接所述第八可控开关的控制端、所述控制信号点及所述逻辑处理模块,所述第七可控开关的输出端连接所述第八可控开关的输出端、所述第五可控开关的输出端及所述第二可控开关的输出端,所述第八可控开关的输入端连接所述第九可控开关的输出端,所述第九可控开关的输入端连接所述第十可控开关的输入端,所述第九可控开关的控制端连接所述第一时钟端,所述第十可控开关的控制端连接所述复位信号,所述第十可控开关的输入端连接所述关闭电压端,所述第二反相器的输入端连接所述第五可控开关的输出端,所述第二反相器的输出端连接所述控制信号点、所述第七及第八可控开关的控制端及所述逻辑处理模块。
其中,所述锁存模块包括第六至第九可控开关及与门,所述第六可控开关的控制端连接所述第二时钟信号,所述第六可控开关的输入端连接所述开启电压端,所述第六可控开关的输出端连接所述第七可控开关的输入端,所述第七可控开关的控制端连接所述第八可控开关的控制端、所述控制信号点及所述逻辑处理模块,所述第七可控开关的输出端连接所述第八可控开关的输出端、所述第五可控开关的输出端及所述第二可控开关的输出端,所述第八可控开关的输入端连接所述第九可控开关的输出端,所述第九可控开关的输入端连接所述关闭电压端,所述第九可控开关的控制端连接所述与门的输出端,所述与门的第一输入端连接所述复位信号,所述与门的第二输入端连接所述第一时钟信号,所述第二反相器的输入端连接所述第五可控开关的输出端,所述第二反相器的输出端连接所述控制信号点、所述第七及第八可控开关的控制端及所述逻辑处理模块。
其中,所述逻辑处理模块包括第十一至第十四可控开关,所述第十一可控开关的输入端连接所述第十二可控开关的输入端,所述第十一可控开关的控制端连接所述控制点及所述第十三可控开关的控制端,所述第十一可控开关的输出端连接所述第十二可控开关的输出端、所述输出模块及所述第十三可控开关的输入端,所述第十二可控开关的控制端连接所述第三时钟信号及所述第十四可控开关的控制端,所述第十三可控开关的输出端连接所述第十四可控开关的输入端,所述第十四可控开关的输入端连接所述关闭电压端。
其中,所述输出模块包括第三至第五反相器,所述第三反相器的输入端连接所述第十一及第十三可控开关的输出端,所述第三反相器的输出端连接所述第四反相器的输入端,所述第四反相器的输出端连接所述第五反相器的输入端,所述第五反相器的输出端连接所述扫描线。
其中,所述第一可控开关、所述第二可控开关、所述第五至第七可控开关、所述第十一可控开关及所述第十二可控开关为PMOS型薄膜晶体管,所述第三可控开关、所述第四可控开关、所述第八至第十可控开关、所述第十三可控开关及所述第十四可控开关为NMOS型薄膜晶体管。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种液晶显示装置,包括如上所述任一所述的扫描驱动电路。
本发明的有益效果是:区别于现有技术的情况,本发明的扫描驱动电路在所述复位模块工作时,所述复位信号为低电平,从而控制所述第五可控开关导通,所述此时无论所述控制信号点及所述第一时钟信号的电位如何,均能使得所述关闭电压端不被提供给所述控制信号点,以此实现所述控制信号点及所述扫描驱动信号的复位清零,进而避免造成所述扫描驱动电路的失效。
【附图说明】
图1是本发明的第一实施例的扫描驱动电路的结构示意图;
图2是本发明的第二实施例的扫描驱动电路的结构示意图;
图3是本发明的第三实施例的扫描驱动电路的结构示意图;
图4是本发明的扫描驱动电路避免竞争风险点的工作时序图;
图5是本发明的扫描驱动电路的工作时序图;
图6是本发明的液晶显示装置的示意图。
【具体实施方式】
请参阅图1,是本发明第一实施例的扫描驱动电路的结构示意图。如图1所示,本发明的扫描驱动电路1包括输入模块100,用于接收上级控制信号、第一及第二时钟信号并对所述上级控制信号、所述第一及第二时钟信号进行运算以获得第一控制信号并对所述第一控制信号进行输出;复位模块200,连接所述输入模块100,用于接收复位信号并根据所述复位信号对所述扫描驱动电路的控制信号点进行清零;锁存模块300,用于接收所述输入模块100输出的第一控制信号及接收所述第一及第二时钟信号并对所述第一控制信号、所述第一及第二时钟信号进行运算以获得第二控制信号并对所述第二控制信号进行锁存及输出;逻辑处理模块400,连接所述锁存模块300,用于接收所述锁存模块300输出的第二控制信号及接收第三时钟信号并对所述第二控制信号及所述第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;输出模块500,连接所述逻辑处理模块400,用于接收所述逻辑处理模块400输出的逻辑控制信号并对所述逻辑控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及扫描线,连接所述输出模块500,用于将所述输出模块500输出的扫描驱动信号传输至像素单元。
所述输入模块100包括第一至第四可控开关T1-T4及第一反相器U1,所述第一可控开关T1的控制端连接所述第一时钟信号,所述第一可控开关T1的输入端连接所述开启电压端VGH,所述第一可控开关T1的输出端连接所述第二可控开关T2的输入端,所述第二可控开关T2的控制端连接所述上级控制信号及所述第三可控开关T3的控制端,所述第二可控开关T2的输出端连接所述复位模块200、所述锁存模块300及所述第三可控开关T3的输出端,所述第三可控开关T3的输入端连接所述第四可控开关T4的输出端,所述第四可控开关T4的输入端连接关闭电压端VGL,所述第四可控开关T4的控制端连接所述第二时钟信号,所述第一反相器U1的输入端连接所述第二时钟信号,所述第一反相器U1的输出端连接所述第一时钟信号。
所述复位模块200包括第五可控开关T5,所述第五可控开关T5的控制端连接所述复位信号,所述第五可控开关T5的输入端连接所述开启电压端VGH,所述第五可控开关T5的输出端连接所述第二及第三可控开关T2、T3的输出端及所述锁存模块300。
所述锁存模块300包括第六至第十可控开关T6-T10及反相器U2,所述第六可控开关T6的控制端连接所述第二时钟信号,所述第六可控开关T6的输入端连接所述开启电压端VGH,所述第六可控开关T6的输出端连接所述第七可控开关T7的输入端,所述第七可控开关T7的控制端连接所述第八可控开关T8的控制端、所述控制信号点及所述逻辑处理模块400,所述第七可控开关T7的输出端连接所述第八可控开关T8的输出端、所述第五可控开关T5的输出端及所述第二可控开关T2的输出端,所述第八可控开关T8的输入端连接所述第九可控开关T9的输出端,所述第九可控开关T9的输入端连接所述关闭电压端VGL,所述第九可控开关T9的控制端连接所述第十可控开关T10的输出端,所述第十可控开关T10的控制端连接所述复位信号,所述第十可控开关T10的输入端连接所述第一可控开关XCK1,所述第二反相器U2的输入端连接所述第五可控开关T5的输出端,所述第二反相器U2的输出端连接所述控制信号点、所述第七及第八可控开关T7、T8的控制端及所述逻辑处理模块400。
所述逻辑处理模块400包括第十一至第十四可控开关T11-T14,所述第十一可控开关T11的输入端连接所述第十二可控开关T12的输入端,所述第十一可控开关T11的控制端连接所述控制点及所述第十三可控开关T13的控制端,所述第十一可控开关T11的输出端连接所述第十二可控开关T12的输出端、所述输出模块500及所述第十三可控开关T13的输入端,所述第十二可控开关T12的控制端连接所述第三时钟信号及所述第十四可控开关T14的控制端,所述第十三可控开关T13的输出端连接所述第十四可控开关T14的输入端,所述第十四可控开关T14的输入端连接所述关闭电压端VGL。
所述输出模块500包括第三至第五反相器U3-U5,所述第三反相器U3的输入端连接所述第十一及第十三可控开关T11、T13的输出端,所述第三反相器U3的输出端连接所述第四反相器U4的输入端,所述第四反相器U4的输出端连接所述第五反相器U5的输入端,所述第五反相器U5的输出端连接所述扫描线。
所述实施例中仅以一个扫描驱动电路为例进行说明,其中,所述上级控制信号为上级控制信号Q(N-1),所述第一时钟信号为第一时钟信号XCK1,所述第二时钟信号为第二时钟信号CK1,所述复位信号为复位信号Reset,所述第三时钟信号为第三时钟信号CK2,所述控制信号点为控制信号点Q(N),所述扫描线为扫描线Gate。
所述第一实施例的扫描驱动电路1的工作原理如下:
当所述复位模块200工作时,所述复位信号Reset为低电平,所述第五可控开关T5的控制端接收所述低电平信号而导通,所述第十可控开关T10的控制端接收所述低电平信号而截止,所述第一时钟信号XCK1的高电平不能作用于所述第九可控开关T9的控制端,所述第九可控开关T9截止,此时即使所述控制点Q(N)的高电平控制所述第八可控开关T8导通,所述关闭电压端VGL也不能被提供到所述控制信号点Q(N),因此所述控制信号点Q(N)的高电平不会影响所述复位信号Reset的正常工作,所述控制信号点Q(N)会在所述复位信号Reset的低平来临时变成低电位,从而对所述控制信号点Q(N)点及所述扫描驱动信号完成复位清零。
请参阅图2,是本发明第二实施例的扫描驱动电路的结构示意图。如图2所示,所述第二实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述锁存模块300包括第六至第十可控开关T6-T10及第二反相器U2,所述第六可控开关T6的控制端连接所述第二时钟信号,所述第六可控开关T6的输入端连接所述开启电压端VGH,所述第六可控开关T6的输出端连接所述第七可控开关T7的输入端,所述第七可控开关T7的控制端连接所述第八可控开关T8的控制端、所述控制信号点及所述逻辑处理模块400,所述第七可控开关T7的输出端连接所述第八可控开关T8的输出端、所述第五可控开关T5的输出端及所述第二可控开关T2的输出端,所述第八可控开关T8的输入端连接所述第九可控开关T9的输出端,所述第九可控开关T9的输入端连接所述第十可控开关T10的输入端,所述第九可控开关T9的控制端连接所述第一时钟端,所述第十可控开关T10的控制端连接所述复位信号,所述第十可控开关T10的输入端连接所述关闭电压端VGL,所述第二反相器U2的输入端连接所述第五可控开关T5的输出端,所述第二反相器U2的输出端连接所述控制信号点、所述第七及第八可控开关T7、T8的控制端及所述逻辑处理模块400。
所述第二实施例的扫描驱动电路1的工作原理如下:
当所述复位模块200工作时,所述复位信号Reset为低电平,所述第五可控开关T5的控制端接收所述低电平信号而导通,所述第十可控开关T10的控制端接收所述低电平信号而截止,此时即使所述控制信号点Q(N)及所述第一时钟信号XCK1的高电平控制所述第八可控开关T8及所述第九可控开关T9导通,所述关闭电压端VGL也不能被提供到所述控制信号点Q(N),因此所述控制信号点Q(N)的高电平不会影响所述复位信号Reset的正常工作,所述控制信号点Q(N)会在所述复位信号Reset的低平来临时变成低电位,从而对所述控制信号点Q(N)点及所述扫描驱动信号完成复位清零。
请参阅图3,是本发明第三实施例的扫描驱动电路的结构示意图。如图3所示,所述第三实施例的扫描驱动电路与所述第一实施例的扫描驱动电路的区别之处在于:所述锁存模块300包括第六至第九可控开关T6-T9及与门Y1,所述第六可控开关T6的控制端连接所述第二时钟信号,所述第六可控开关T6的输入端连接所述开启电压端VGH,所述第六可控开关T6的输出端连接所述第七可控开关T7的输入端,所述第七可控开关T7的控制端连接所述第八可控开关T8的控制端、所述控制信号点及所述逻辑处理模块400,所述第七可控开关T7的输出端连接所述第八可控开关T8的输出端、所述第五可控开关T5的输出端及所述第二可控开关T2的输出端,所述第八可控开关T8的输入端连接所述第九可控开关T9的输出端,所述第九可控开关T9的输入端连接所述关闭电压端VGL,所述第九可控开关T9的控制端连接所述与门Y1的输出端,所述与门Y1的第一输入端连接所述复位信号,所述与门Y1的第二输入端连接所述第一时钟信号,所述第二反相器的输入端连接所述第五可控开关T5的输出端,所述第二反相器U2的输出端连接所述控制信号点、所述第七及第八可控开关T7、T8的控制端及所述逻辑处理模块400。
所述第三实施例的扫描驱动电路1的工作原理如下:
当所述复位模块200工作时,所述复位信号Reset为低电平,所述第五可控开关T5的控制端接收所述低电平信号而导通,所述与门Y1的第一输入端接收所述低电平信号,此时无论所述与门Y1的第二输入端接收到的所述第一时钟信号XCK1为高电平或低电平,所述与门Y1的输出端都输出低电平信号给所述第九可控开关T9的控制端,以控制所述第九可控开关T9截止,此时即使所述控制信号点Q(N)的高电平控制所述第八可控开关T8导通,所述关闭电压端VGL也不能被提供到所述控制信号点Q(N),因此所述控制信号点Q(N)的高电平不会影响所述复位信号Reset的正常工作,所述控制信号点Q(N)会在所述复位信号Reset的低平来临时变成低电位,从而对所述控制信号点Q(N)点及所述扫描驱动信号完成复位清零。
所述第一可控开关T1、所述第二可控开关T2、所述第五至第七可控开关T5-T7、所述第十一可控开关T11及所述第十二可控开关T12为PMOS型薄膜晶体管,所述第三可控开关T3、所述第四可控开关T4、所述第八至第十可控开关T8-T10、所述第十三可控开关T13及所述第十四可控开关T14为NMOS型薄膜晶体管。
请参阅图4及图5,图4是本发明扫描驱动电路1避免竞争风险点的时序图。图5是本发明扫描驱动电路1的工作时序图。根据图4及图5分析可知,在所述复位模块200工作时,所述复位信号Reset为低电平,因此所述关闭电压端VGL不会被提供给所述控制信号点Q(N)(即不存在竞争关系),控制信号点Q(N)和扫描驱动信号能够进行正常的下拉,在所述扫描驱动电路1正常工作前,所有工作点的状态都能保持在正常的电位,因此所述扫描驱动电路1不会出现失效的风险。
请参阅图6,为本发明一种液晶显示装置的示意图。所述液晶显示装置包括前述的扫描驱动电路1,所述扫描驱动电路1设置在所述液晶显示装置的两端。
本发明的扫描驱动电路在所述复位模块工作时,所述复位信号为低电平,从而控制所述第五可控开关导通,所述此时无论所述控制信号点及所述第一时钟信号的电位如何,均能使得所述关闭电压端不被提供给所述控制信号点,以此实现所述控制信号点及所述扫描驱动信号的复位清零,进而避免造成所述扫描驱动电路的失效。
以上仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (20)
- 一种扫描驱动电路,其中,所述扫描驱动电路包括:输入模块(100),用于接收上级控制信号、第一及第二时钟信号并对所述上级控制信号、所述第一及第二时钟信号进行运算以获得第一控制信号并对所述第一控制信号进行输出;复位模块(200),连接所述输入模块(100),用于接收复位信号并根据所述复位信号对所述扫描驱动电路的控制信号点进行清零;锁存模块(300),用于接收所述输入模块(100)输出的第一控制信号及接收所述第一及第二时钟信号并对所述第一控制信号、所述第一及第二时钟信号进行运算以获得第二控制信号并对所述第二控制信号进行锁存及输出;逻辑处理模块(400),连接所述锁存模块(300),用于接收所述锁存模块(300)输出的第二控制信号及接收第三时钟信号并对所述第二控制信号及所述第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;输出模块(500),连接所述逻辑处理模块(400),用于接收所述逻辑处理模块(400)输出的逻辑控制信号并对所述逻辑控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及扫描线,连接所述输出模块(500),用于将所述输出模块(500)输出的扫描驱动信号传输至像素单元。
- 根据权利要求1所述的扫描驱动电路,其中,所述输入模块(100)包括第一至第四可控开关(T1-T4)及第一反相器(U1),所述第一可控开关(T1)的控制端连接所述第一时钟信号,所述第一可控开关(T1)的输入端连接所述开启电压端(VGH),所述第一可控开关(T1)的输出端连接所述第二可控开关(T2)的输入端,所述第二可控开关(T2)的控制端连接所述上级控制信号及所述第三可控开关(T3)的控制端,所述第二可控开关(T2)的输出端连接所述复位模块(200)、所述锁存模块(300)及所述第三可控开关(T3)的输出端,所述第三可控开关(T3)的输入端连接所述第四可控开关(T4)的输出端,所述第四可控开关(T4)的输入端连接关闭电压端(VGL),所述第四可控开关(T4)的控制端连接所述第二时钟信号,所述第一反相器(U1)的输入端连接所述第二时钟信号,所述第一反相器(U1)的输出端连接所述第一时钟信号。
- 根据权利要求2所述的扫描驱动电路,其中,所述复位模块(200)包括第五可控开关(T5),所述第五可控开关(T5)的控制端连接所述复位信号,所述第五可控开关(T5)的输入端连接所述开启电压端(VGH),所述第五可控开关(T5)的输出端连接所述第二及第三可控开关(T2、T3)的输出端及所述锁存模块(300)。
- 根据权利要求3所述的扫描驱动电路,其中,所述锁存模块(300)包括第六至第十可控开关(T6-T10)及反相器(U2),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述关闭电压端(VGL),所述第九可控开关(T9)的控制端连接所述第十可控开关(T10)的输出端,所述第十可控开关(T10)的控制端连接所述复位信号,所述第十可控开关(T10)的输入端连接所述第一可控开关(XCK1),所述第二反相器(U2)的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求4所述的扫描驱动电路,其中,所述逻辑处理模块(400)包括第十一至第十四可控开关(T11-T14),所述第十一可控开关(T11)的输入端连接所述第十二可控开关(T12)的输入端,所述第十一可控开关(T11)的控制端连接所述控制点及所述第十三可控开关(T13)的控制端,所述第十一可控开关(T11)的输出端连接所述第十二可控开关(T12)的输出端、所述输出模块(500)及所述第十三可控开关(T13)的输入端,所述第十二可控开关(T12)的控制端连接所述第三时钟信号及所述第十四可控开关(T14)的控制端,所述第十三可控开关(T13)的输出端连接所述第十四可控开关(T14)的输入端,所述第十四可控开关(T14)的输入端连接所述关闭电压端(VGL)。
- 根据权利要求3所述的扫描驱动电路,其中,所述锁存模块(300)包括第六至第十可控开关(T6-T10)及第二反相器(U2),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述第十可控开关(T10)的输入端,所述第九可控开关(T9)的控制端连接所述第一时钟端,所述第十可控开关(T10)的控制端连接所述复位信号,所述第十可控开关(T10)的输入端连接所述关闭电压端(VGL),所述第二反相器(U2)的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求6所述的扫描驱动电路,其中,所述逻辑处理模块(400)包括第十一至第十四可控开关(T11-T14),所述第十一可控开关(T11)的输入端连接所述第十二可控开关(T12)的输入端,所述第十一可控开关(T11)的控制端连接所述控制点及所述第十三可控开关(T13)的控制端,所述第十一可控开关(T11)的输出端连接所述第十二可控开关(T12)的输出端、所述输出模块(500)及所述第十三可控开关(T13)的输入端,所述第十二可控开关(T12)的控制端连接所述第三时钟信号及所述第十四可控开关(T14)的控制端,所述第十三可控开关(T13)的输出端连接所述第十四可控开关(T14)的输入端,所述第十四可控开关(T14)的输入端连接所述关闭电压端(VGL)。
- 根据权利要求3所述的扫描驱动电路,其中,所述锁存模块(300)包括第六至第九可控开关(T6-T9)及与门(Y1),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述关闭电压端(VGL),所述第九可控开关(T9)的控制端连接所述与门(Y1)的输出端,所述与门(Y1)的第一输入端连接所述复位信号,所述与门(Y1)的第二输入端连接所述第一时钟信号,所述第二反相器的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求8所述的扫描驱动电路,其中,所述逻辑处理模块(400)包括第十一至第十四可控开关(T11-T14),所述第十一可控开关(T11)的输入端连接所述第十二可控开关(T12)的输入端,所述第十一可控开关(T11)的控制端连接所述控制点及所述第十三可控开关(T13)的控制端,所述第十一可控开关(T11)的输出端连接所述第十二可控开关(T12)的输出端、所述输出模块(500)及所述第十三可控开关(T13)的输入端,所述第十二可控开关(T12)的控制端连接所述第三时钟信号及所述第十四可控开关(T14)的控制端,所述第十三可控开关(T13)的输出端连接所述第十四可控开关(T14)的输入端,所述第十四可控开关(T14)的输入端连接所述关闭电压端(VGL)。
- 根据权利要求9所述的扫描驱动电路,其中,所述输出模块(500)包括第三至第五反相器(U3-U5),所述第三反相器(U3)的输入端连接所述第十一及第十三可控开关(T11、T13)的输出端,所述第三反相器(U3)的输出端连接所述第四反相器(U4)的输入端,所述第四反相器(U4)的输出端连接所述第五反相器(U5)的输入端,所述第五反相器(U5)的输出端连接所述扫描线。
- 根据权利要求9所述的扫描驱动电路,其中,所述第一可控开关(T1)、所述第二可控开关(T2)、所述第五至第七可控开关(T5-T7)、所述第十一可控开关(T11)及所述第十二可控开关(T12)为PMOS型薄膜晶体管,所述第三可控开关(T3)、所述第四可控开关(T4)、所述第八至第十可控开关(T8-T10)、所述第十三可控开关(T13)及所述第十四可控开关(T14)为NMOS型薄膜晶体管。
- 一种液晶显示装置,其中,所述液晶显示装置包括扫描驱动电路,所述扫描驱动电路包括:输入模块(100),用于接收上级控制信号、第一及第二时钟信号并对所述上级控制信号、所述第一及第二时钟信号进行运算以获得第一控制信号并对所述第一控制信号进行输出;复位模块(200),连接所述输入模块(100),用于接收复位信号并根据所述复位信号对所述扫描驱动电路的控制信号点进行清零;锁存模块(300),用于接收所述输入模块(100)输出的第一控制信号及接收所述第一及第二时钟信号并对所述第一控制信号、所述第一及第二时钟信号进行运算以获得第二控制信号并对所述第二控制信号进行锁存及输出;逻辑处理模块(400),连接所述锁存模块(300),用于接收所述锁存模块(300)输出的第二控制信号及接收第三时钟信号并对所述第二控制信号及所述第三时钟信号进行逻辑运算以获得逻辑控制信号并将所述逻辑控制信号输出;输出模块(500),连接所述逻辑处理模块(400),用于接收所述逻辑处理模块(400)输出的逻辑控制信号并对所述逻辑控制信号进行运算以获得扫描驱动信号,并将所述扫描驱动信号输出;及扫描线,连接所述输出模块(500),用于将所述输出模块(500)输出的扫描驱动信号传输至像素单元。
- 根据权利要求12所述的液晶显示装置,其中,所述输入模块(100)包括第一至第四可控开关(T1-T4)及第一反相器(U1),所述第一可控开关(T1)的控制端连接所述第一时钟信号,所述第一可控开关(T1)的输入端连接所述开启电压端(VGH),所述第一可控开关(T1)的输出端连接所述第二可控开关(T2)的输入端,所述第二可控开关(T2)的控制端连接所述上级控制信号及所述第三可控开关(T3)的控制端,所述第二可控开关(T2)的输出端连接所述复位模块(200)、所述锁存模块(300)及所述第三可控开关(T3)的输出端,所述第三可控开关(T3)的输入端连接所述第四可控开关(T4)的输出端,所述第四可控开关(T4)的输入端连接关闭电压端(VGL),所述第四可控开关(T4)的控制端连接所述第二时钟信号,所述第一反相器(U1)的输入端连接所述第二时钟信号,所述第一反相器(U1)的输出端连接所述第一时钟信号。
- 根据权利要求13所述的液晶显示装置,其中,所述复位模块(200)包括第五可控开关(T5),所述第五可控开关(T5)的控制端连接所述复位信号,所述第五可控开关(T5)的输入端连接所述开启电压端(VGH),所述第五可控开关(T5)的输出端连接所述第二及第三可控开关(T2、T3)的输出端及所述锁存模块(300)。
- 根据权利要求14所述的液晶显示装置,其中,所述锁存模块(300)包括第六至第十可控开关(T6-T10)及反相器(U2),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述关闭电压端(VGL),所述第九可控开关(T9)的控制端连接所述第十可控开关(T10)的输出端,所述第十可控开关(T10)的控制端连接所述复位信号,所述第十可控开关(T10)的输入端连接所述第一可控开关(XCK1),所述第二反相器(U2)的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求14所述的液晶显示装置,其中,所述锁存模块(300)包括第六至第十可控开关(T6-T10)及第二反相器(U2),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述第十可控开关(T10)的输入端,所述第九可控开关(T9)的控制端连接所述第一时钟端,所述第十可控开关(T10)的控制端连接所述复位信号,所述第十可控开关(T10)的输入端连接所述关闭电压端(VGL),所述第二反相器(U2)的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求14所述的液晶显示装置,其中,所述锁存模块(300)包括第六至第九可控开关(T6-T9)及与门(Y1),所述第六可控开关(T6)的控制端连接所述第二时钟信号,所述第六可控开关(T6)的输入端连接所述开启电压端(VGH),所述第六可控开关(T6)的输出端连接所述第七可控开关(T7)的输入端,所述第七可控开关(T7)的控制端连接所述第八可控开关(T8)的控制端、所述控制信号点及所述逻辑处理模块(400),所述第七可控开关(T7)的输出端连接所述第八可控开关(T8)的输出端、所述第五可控开关(T5)的输出端及所述第二可控开关(T2)的输出端,所述第八可控开关(T8)的输入端连接所述第九可控开关(T9)的输出端,所述第九可控开关(T9)的输入端连接所述关闭电压端(VGL),所述第九可控开关(T9)的控制端连接所述与门(Y1)的输出端,所述与门(Y1)的第一输入端连接所述复位信号,所述与门(Y1)的第二输入端连接所述第一时钟信号,所述第二反相器的输入端连接所述第五可控开关(T5)的输出端,所述第二反相器(U2)的输出端连接所述控制信号点、所述第七及第八可控开关(T7、T8)的控制端及所述逻辑处理模块(400)。
- 根据权利要求17所述的液晶显示装置,其中,所述逻辑处理模块(400)包括第十一至第十四可控开关(T11-T14),所述第十一可控开关(T11)的输入端连接所述第十二可控开关(T12)的输入端,所述第十一可控开关(T11)的控制端连接所述控制点及所述第十三可控开关(T13)的控制端,所述第十一可控开关(T11)的输出端连接所述第十二可控开关(T12)的输出端、所述输出模块(500)及所述第十三可控开关(T13)的输入端,所述第十二可控开关(T12)的控制端连接所述第三时钟信号及所述第十四可控开关(T14)的控制端,所述第十三可控开关(T13)的输出端连接所述第十四可控开关(T14)的输入端,所述第十四可控开关(T14)的输入端连接所述关闭电压端(VGL)。
- 根据权利要求18所述的液晶显示装置,其中,所述输出模块(500)包括第三至第五反相器(U3-U5),所述第三反相器(U3)的输入端连接所述第十一及第十三可控开关(T11、T13)的输出端,所述第三反相器(U3)的输出端连接所述第四反相器(U4)的输入端,所述第四反相器(U4)的输出端连接所述第五反相器(U5)的输入端,所述第五反相器(U5)的输出端连接所述扫描线。
- 根据权利要求18所述的液晶显示装置,其中,所述第一可控开关(T1)、所述第二可控开关(T2)、所述第五至第七可控开关(T5-T7)、所述第十一可控开关(T11)及所述第十二可控开关(T12)为PMOS型薄膜晶体管,所述第三可控开关(T3)、所述第四可控开关(T4)、所述第八至第十可控开关(T8-T10)、所述第十三可控开关(T13)及所述第十四可控开关(T14)为NMOS型薄膜晶体管。
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| CN105652534B (zh) * | 2016-01-21 | 2018-10-19 | 武汉华星光电技术有限公司 | 一种栅极驱动电路及其液晶显示器 |
| CN105609076B (zh) * | 2016-01-28 | 2017-09-15 | 武汉华星光电技术有限公司 | 一种基于栅极驱动电路及其液晶显示器 |
| CN105589604B (zh) * | 2016-03-08 | 2018-06-01 | 京东方科技集团股份有限公司 | 复位电路及其驱动方法、移位寄存器单元、栅极扫描电路 |
| CN105788557B (zh) * | 2016-05-20 | 2018-06-19 | 武汉华星光电技术有限公司 | Goa驱动电路 |
| CN106057131B (zh) * | 2016-05-27 | 2018-11-23 | 武汉华星光电技术有限公司 | 扫描驱动电路及具有该电路的平面显示装置 |
| CN107633817B (zh) | 2017-10-26 | 2023-12-05 | 京东方科技集团股份有限公司 | 源极驱动单元及其驱动方法、源极驱动电路、显示装置 |
| CN107633834B (zh) * | 2017-10-27 | 2020-03-31 | 京东方科技集团股份有限公司 | 移位寄存单元、其驱动方法、栅极驱动电路及显示装置 |
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| CN108520725A (zh) * | 2018-04-20 | 2018-09-11 | 京东方科技集团股份有限公司 | 一种源极驱动电路、显示设备及驱动方法 |
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