WO2013137069A1 - シフトレジスタ、ドライバ回路、表示装置 - Google Patents
シフトレジスタ、ドライバ回路、表示装置 Download PDFInfo
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- WO2013137069A1 WO2013137069A1 PCT/JP2013/056004 JP2013056004W WO2013137069A1 WO 2013137069 A1 WO2013137069 A1 WO 2013137069A1 JP 2013056004 W JP2013056004 W JP 2013056004W WO 2013137069 A1 WO2013137069 A1 WO 2013137069A1
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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
- 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
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
- G11C27/04—Shift registers
-
- 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
Definitions
- the present invention relates to a shift register used for a display device or the like.
- Patent Document 1 in a scanning line driving circuit including a shift register, power consumption is reduced by stopping (fixing inactive) a clock signal input to the shift register during a vertical blanking period. Techniques to be disclosed are disclosed.
- the inventors stopped the plurality of clock signals during the non-operation period of the shift register, and the phase relationship between these clock signals in the initial operation period of the shift register. It has been found that there is a risk of malfunction due to.
- An object of the present invention is to suppress malfunction of a shift register in which a plurality of clock signals are input to each stage.
- the shift register includes an initial stage, a first intermediate stage, a second intermediate stage, and an end stage, and each of the first and second intermediate stages includes a first input terminal, a second input terminal, and an output transistor.
- An output terminal connected to the first input terminal, a setting circuit connected to the second input terminal and the output transistor, and setting a potential of the control terminal of the output transistor are provided.
- the first input terminal, the second input terminal, In the second halfway stage, a control circuit is provided which is connected to the setting circuit and to which the control signal is input.
- FIG. 3 is a circuit diagram illustrating a unit stage of the shift register according to the first embodiment. It is a block diagram which shows the structural example of the display apparatus of this Embodiment.
- FIG. 3 is a circuit diagram illustrating first to eighth stages of the shift register according to the first embodiment.
- FIG. 6 is a circuit diagram illustrating ninth to sixteenth stages of the shift register according to the first embodiment.
- FIG. 3 is a circuit diagram showing n-5th to nth stages of the shift register according to the first embodiment.
- 3 is a timing chart illustrating an operation of the shift register according to the first exemplary embodiment.
- FIG. 10 is a circuit diagram illustrating a second modification of the shift register according to the first embodiment. 10 is a timing chart showing an operation of the shift register of FIG. 9. FIG. 10 is a circuit diagram illustrating a third modification of the shift register according to the first embodiment. 12 is a timing chart showing the operation of the shift register of FIG.
- FIG. 5 is a circuit diagram (a) showing another configuration example of FIG. 1 and a waveform (b) of an input signal.
- (A) and (b) are circuit diagrams showing unit stages of the shift register of the second embodiment.
- FIG. 6 is a circuit diagram illustrating first to eighth stages of a shift register according to a second embodiment.
- FIG. 10 is a circuit diagram showing the ninth to sixteenth stages of the shift register according to the second embodiment.
- FIG. 6 is a circuit diagram showing n-5th to nth stages of a shift register of Example 2.
- FIG. 10 is a circuit diagram illustrating a first modification of the shift register according to the second embodiment.
- FIG. 15 is a circuit diagram (a) and (b) showing another configuration example of FIG. 14 and a waveform (c) of an input signal.
- FIG. 10 is a circuit diagram illustrating a unit stage of a shift register according to a third embodiment.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a third embodiment.
- FIG. 10 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a third embodiment.
- FIG. 10 is a circuit diagram showing n-5th to nth stages of a shift register of Example 3.
- FIG. 12 is a timing chart illustrating an operation of the shift register according to the third embodiment.
- FIG. 10 is a circuit diagram illustrating a first modification of the shift register according to the third embodiment.
- FIG. 26 is a timing chart showing an operation of the shift register of FIG. 25.
- FIG. 10 is a circuit diagram illustrating a second modification of the shift register according to the third embodiment.
- 28 is a timing chart showing an operation of the shift register of FIG.
- FIG. 10 is a circuit diagram illustrating a third modification of the shift register according to the first embodiment.
- FIG. 21 is a circuit diagram (a) showing another configuration example of FIG. 20 and a waveform (b) of its input signal.
- (A) (b) is a circuit diagram showing a unit stage of the shift register of the fourth embodiment.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a fourth embodiment.
- FIG. 10 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a fourth embodiment.
- FIG. 9 is a circuit diagram showing n-5th to nth stages of a shift register of Example 4.
- FIG. 10 is a circuit diagram illustrating a first modification of the shift register according to the fourth embodiment.
- FIG. 32 is a circuit diagram (a) and (b) showing another configuration example of FIG. 31 and a waveform (c) of an input signal.
- (A) and (b) are circuit diagrams showing unit stages of the shift register of the fifth embodiment.
- FIG. 10 is a circuit diagram illustrating first to nth stages of a shift register according to a fifth embodiment.
- FIG. 10 is a circuit diagram illustrating a modification of the shift register according to the fifth embodiment.
- FIG. 10 is a circuit diagram illustrating a unit stage of a shift register according to a sixth embodiment.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a sixth embodiment.
- FIG. 10 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a sixth embodiment.
- FIG. 10 is a circuit diagram showing n-5th to nth stages of a shift register of Example 6.
- 14 is a timing chart illustrating the operation of the shift register according to the sixth embodiment.
- FIG. 16 is a circuit diagram illustrating a first modification of the shift register according to the sixth embodiment. 46 is a timing chart showing the operation of the shift register of FIG. FIG.
- FIG. 22 is a circuit diagram illustrating a second modification of the shift register according to the sixth embodiment.
- 48 is a timing chart showing an operation of the shift register of FIG.
- FIG. 20 is a circuit diagram illustrating a third modification of the shift register according to the sixth embodiment.
- 50 is a timing chart showing an operation of the shift register of FIG. 49.
- FIG. 41 is a circuit diagram (a) showing another configuration example of FIG. 40 and a waveform (b) of an input signal.
- (A) and (b) are circuit diagrams showing a unit stage of the shift register of the seventh embodiment.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a seventh embodiment.
- FIG. 10 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a seventh embodiment.
- FIG. 17 is a circuit diagram showing n-5th to nth stages of a shift register according to a seventh embodiment.
- FIG. 20 is a circuit diagram illustrating a first modification of the shift register according to the seventh embodiment.
- FIG. 52 is a circuit diagram (a) and (b) showing another configuration example of FIG. 52 and a waveform (c) of an input signal.
- FIG. 10 is a circuit diagram illustrating a unit stage of a shift register according to an eighth embodiment.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to an eighth embodiment.
- FIG. 20 is a circuit diagram showing ninth to sixteenth stages of a shift register according to an eighth embodiment.
- FIG. 20 is a circuit diagram showing n-5th to nth stages of a shift register according to an eighth embodiment.
- FIG. 10 is a timing chart illustrating an operation of the shift register according to the eighth embodiment.
- FIG. 22 is a circuit diagram illustrating a first modification of the shift register according to the eighth embodiment.
- FIG. 65 is a timing chart showing the operation of the shift register of FIG. 64.
- FIG. FIG. 25 is a circuit diagram illustrating a second modification of the shift register according to the eighth embodiment.
- FIG. 66 is a timing chart showing an operation of the shift register of FIG. 65.
- FIG. FIG. 22 is a circuit diagram illustrating a third modification of the shift register according to the eighth embodiment.
- FIG. 59 is a circuit diagram (a) showing another configuration example of FIG. 58 and a waveform (b) of its input signal.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a ninth embodiment.
- FIG. 17 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a ninth embodiment.
- FIG. 17 is a circuit diagram showing n-5th to nth stages of a shift register according to a ninth embodiment.
- FIG. 30 is a circuit diagram illustrating a first modification of the shift register according to the ninth embodiment.
- FIG. 70 is a circuit diagram (a) and (b) showing another configuration example of FIG. 69 and a waveform (c) of an input signal.
- (A) and (b) are the circuit diagrams which show the unit stage of the shift register of Example 10.
- FIG. 10 is a circuit diagram illustrating first to eighth stages of a shift register according to a ninth embodiment.
- FIG. 17 is a circuit diagram showing ninth to sixteenth stages of a shift register according to a ninth embodiment.
- FIG. 17 is a circuit diagram showing n-5th to nth stages of
- FIG. 22 is a circuit diagram illustrating first to nth stages of a shift register according to a tenth embodiment.
- FIG. 22 is a circuit diagram illustrating a modification of the shift register according to the tenth embodiment. It is a schematic diagram which shows the structural example of the driver of this display apparatus. It is a timing chart which shows the modification in the case of removing wiring L * I. It is a timing chart which shows the modification in the case of using wiring W * w.
- FIG. 6 is a circuit diagram (n-5th to nth stages) showing a further modification of the first embodiment.
- FIG. 10 is a circuit diagram (n-5th to nth stages) showing a further modification of the second embodiment.
- FIG. 10 is a circuit diagram (n-5th to nth stages) showing a further modification of the third embodiment.
- FIG. 10 is a circuit diagram (n-5th to nth stages) showing a further modification of the fourth embodiment.
- FIG. 22 is a circuit diagram (9th to 16th stages) showing a further modification of the sixth embodiment.
- FIG. 16 is a circuit diagram (9th to 16th stages) showing a further modification of the seventh embodiment.
- FIG. 16 is a circuit diagram (9th to 16th stages) showing a further modification of the eighth embodiment.
- FIG. 22 is a circuit diagram (9th to 16th stages) showing a further modification of the ninth embodiment.
- this liquid crystal display device LCD drives the liquid crystal panel LCP, the gate driver GD that drives the scanning signal lines G1 to Gn of the liquid crystal panel LCP, and the data signal lines S1 to Sn of the liquid crystal panel LCP.
- a source driver SD and a display control circuit DCC that controls the gate driver GD and the source driver SD are provided. Note that the gate driver GD and the source driver may be formed monolithically with the liquid crystal panel LCP.
- the gate driver GD includes a first shift register SR1 provided on one side of the display unit DA (left side in FIG. 1 in which the short side of the liquid crystal panel is arranged on the left and right) and a plurality of signal input signals connected thereto.
- the wiring IL1 and the second shift register SR2 provided on the other side of the display portion DA (the right side in FIG. 1 where the short side of the liquid crystal panel is arranged on the left and right) and a plurality of signal input signals connected thereto.
- the first shift register SR1 is connected to odd-numbered scanning signal lines (G1... Gn-1), and the second shift register SR2 is even-numbered scanning signal lines (G2... Gn). Connected to.
- Example 1 A configuration example of m stages (unit circuit UCm) of the first and second shift registers SR1 and SR2 according to the first embodiment is illustrated in FIG. 1 (m is a natural number). It is assumed that the stage where m is an odd number is included in the first shift register SR1, and the stage where m is an even number is included in the second shift register SR2.
- the unit circuit UCm includes four input terminals CK1 to CK4, a set terminal STm, a reset terminal RTm, an output terminal OTm, a control terminal CTm, an initialization terminal LTm, and an N channel.
- Transistors M1 to M12 and a capacitor C1 are provided, and an output terminal OTm is connected to the mth scanning signal line Gm of the liquid crystal panel.
- the drain of M10 is connected to CK1
- the source of M10 is connected to one electrode of the capacitor C1
- the gate (node nA) of M10 is connected to the capacitor.
- the gate of M8 is connected to the source of M4, the drain of M7, the drain of M3, the drain of M6, and the source of M5, and the sources of M2, M3, M6 to M9, and M11 to M12 are It is connected to the low power supply potential VSS (VGL).
- the drain and gate of M1 are connected to the set terminal STm, the drain and gate of M5 are connected to the input terminal CK2, the drain and gate of M4 (control transistor) are connected to the control terminal CTm, and M2, M3 and M12 Each gate is connected to the initialization terminal LTm, the gate of M7 is connected to the input terminal CK3, the gate of M9 is connected to the reset terminal RTm, and the gate of M11 is connected to the input terminal CK4.
- the plurality of wirings IL1 in FIG. 2 include wirings (trunk wirings) A to D for supplying four-phase clock signals CKA to CKD and two-phase (gate) start pulse signals.
- 2 includes wiring (stem wiring) X and Y for supplying SPX / SPY, wiring (stem wiring) L for supplying an initialization signal INTL, and wiring (power wiring) P for supplying a low power supply potential VSS.
- the plurality of wirings IL2 include wirings (stem wirings) a to d for supplying four-phase clock signals CKa to CKd and wirings (stem wirings) x to supply two-phase (gate) start pulse signals SPx and SPy. y, a wiring (stem wiring) l for supplying the initialization signal INTl, and a wiring (power wiring) P for supplying the low power supply potential VSS.
- the input terminal CK1 is connected to the wiring A that supplies the clock signal CKA, and the input terminal CK2 is connected to the wiring D that supplies the clock signal CKD.
- the input terminal CK2 is connected to the wiring d to supply the clock signal CKd
- the input terminal CK3 is connected to the wiring c to supply the clock signal CKc
- the input terminal CK4 supplies the clock signal CKb. It is connected to the wiring b.
- the input terminal CK1 is connected to the wiring C that supplies the clock signal CKC, and the input terminal CK2 is connected to the wiring A that supplies the clock signal CKA.
- the input terminal CK2 is connected to the wiring a to supply the clock signal CKa
- the input terminal CK3 is connected to the wiring b to supply the clock signal CKb
- the input terminal CK4 supplies the clock signal CKd. It is connected to the wiring d.
- the input terminal CK1 is connected to the wiring B that supplies the clock signal CKB, and the input terminal CK2 is connected to the wiring C that supplies the clock signal CKC.
- the input terminal CK2 is connected to the wiring c supplying the clock signal CKc
- the input terminal CK3 is connected to the wiring d supplying the clock signal CKd
- the input terminal CK4 supplies the clock signal CKa. It is connected to the wiring a.
- the input terminal CK1 is connected to the wiring D that supplies the clock signal CKD, and the input terminal CK2 is connected to the wiring B that supplies the clock signal CKB.
- the input terminal CK3 is connected to the wiring A that supplies the clock signal CKA, and the input terminal CK4 is connected to the wiring C that supplies the clock signal CKC.
- the input terminal CK1 is connected to the wiring d that supplies the clock signal CKd, and the input terminal CK2 is connected to the wiring b that supplies the clock signal CKb.
- the input terminal CK3 is connected to the wiring a for supplying the clock signal CKa, and the input terminal CK4 is connected to the wiring c for supplying the clock signal CKc.
- the set terminal STm 1
- the set terminal STm is connected to the wiring X that supplies the start pulse signal SPX
- the reset terminal RTm is connected to the m + 6 stage output terminal OT7
- the set terminal STm 2
- the set terminal STm Is connected to the wiring x for supplying the start pulse signal SPx
- the reset terminal RTm is connected to the m + 6 stage output terminal OT9.
- the reset terminal RTm is a wiring for supplying the initialization signal INTL.
- FIG. 6 shows potential fluctuations (signal waveforms) of the nodes nA and nB (at each stage). As shown in FIG.
- the clock signals CKA to CKD from the wirings A to D, the clock signals CKa to CKd from the wirings a to d, and the start pulse signals SPX, SPY, SPx, from the wirings X, Y, x, y SPy and initialization signals INTL and INTl from the wiring L ⁇ l are signals that become “High” during the active period of 4H (4 horizontal scanning periods), and start (start) of the operation period PT (of the shift register)
- the clock signals CKA to CKD and the clock signals CKa to CKd are all inactive (Low). If the period during which the scanning signal lines of the display portion are scanned is a vertical scanning period, the vertical scanning period is included in the operation period PT, and the non-operation period is included in the vertical blanking (return line) period. Become.
- the start pulse signal SPx is delayed by 1H phase from the start pulse signal SPX
- the start pulse signal SPY is delayed by 1H phase from the start pulse signal SPx
- the start pulse signal SPy is 1H phase from the start pulse signal SPY. Is late.
- the clock signal CKA rises (becomes active) in synchronization with the fall of the start pulse signal SPX (becomes inactive)
- the clock signal CKa is delayed by 1H phase from the clock signal CKA
- the clock signal CKC The clock signal CKa is delayed by 1H
- the clock signal CKc is delayed by 1H from the clock signal CKC
- the clock signal CKB is delayed by 1H from the clock signal CKc
- the clock signal CKb is delayed by the clock signal CKB.
- the clock signal CKD is delayed by 1H from the clock signal CKb
- the clock signal CKd is delayed by 1H from the clock signal CKD.
- the start pulse signal SPX rises (at the start of the operation period PT)
- the node nB is set to “High”
- the transistor M8 is turned on
- the node nA the gate of the transistor M10) is charged to “Low”. be able to.
- the control circuit SC including the transistor M4 is provided in such a unit circuit UCm, and the control terminal CTm connected to the drain and gate of M4 is connected to the wiring x that supplies the start pulse signal SPx. They are connected (see FIGS. 1, 4 and 5).
- the node nB is set to “High”, the transistor M8 is turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKd remains inactive when the clock signal CKa rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the load (dullness etc.) of the start pulse SPX / SPx can be reduced. Can do.
- the start pulse signal (SPX ⁇ SPx) is input to the set output terminal STm (connected to the gate and drain of M1), and therefore the transistor M4 is included instead of the control circuit SC.
- An adjustment circuit AC is provided, and a control terminal CTm connected to the drain and gate of M4 is connected to a wiring P that supplies a low power supply potential VSS.
- the clock signal input to the input terminal CK1 is input when it rises for the first time after the operation period starts.
- an adjustment circuit AC including a transistor M4 is provided in place of the control circuit SC, and a control terminal CTm connected to the drain and gate of M4 is connected to a wiring P that supplies a low power supply potential VSS. In this way, by providing the adjustment circuit AC having the same configuration as the control circuit SC, the load around the transistor M4 can be made uniform at each stage, and the waveform of the output signal to the scanning signal line can be prevented from shifting from stage to stage. .
- the operation of the first stage unit circuit UC1 (FIG. 3) is as follows.
- M1 is turned on
- the node nA (nA1 in FIG. 6) becomes “High”, and M6 and M10 are turned on.
- the node nB (nB1 in FIG. 6) becomes “Low” and M8 is turned OFF.
- the clock signal CKA from the wiring A rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKA is output from the output terminal OT1.
- the clock signal CKA falls, the potential of the node nA also falls.
- the operation of the fifth stage unit circuit UC5 is as follows.
- M1 is turned on
- the node nA (nA5 in FIG. 6) becomes “High”, and M6 and M10 are turned on.
- the node nB (nB5 in FIG. 6) becomes “Low” and M8 is turned OFF.
- the clock signal CKB from the wiring B rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKB is output from the output terminal OT5.
- the clock signal CKB falls, the potential of the node nA also falls.
- the operation of the ninth stage unit circuit UC9 is as follows. First, when the start pulse signal SPX rises, the node nB (nB9 in FIG. 6) is set to “High”, the transistor M8 is turned on, and the node nA (nA9 in FIG. 6) is charged to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on.
- the node nB becomes “Low” and M8 is turned OFF.
- the clock signal CKA from the wiring A rises, the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKA is output from the output terminal OT9.
- the clock signal CKA falls, the potential of the node nA also falls.
- the clock signal CKD from the wiring D rises (M8 and M9 are turned ON), so that the node nB is “High” and the node nA is It becomes “Low” (M10 is OFF), and the reset is completed.
- the initialization signal INTL rises and M2, 3 and 12 are turned ON, the node nA, the node nB and the output terminal OT9 are charged to “Low”.
- the operation of the n-th unit circuit UCn is as follows.
- M1 is turned ON
- the node nA is set to "High”
- M6 and M10 are turned ON.
- the node nB becomes “Low” and M8 is turned OFF.
- the clock signal CKb falls, the potential of the node nA also falls.
- the drain and gate of M4 of the control circuit SC are connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX ⁇ SPx, but the present invention is not limited to this.
- the drain and gate of M4 of the control circuit SC are connected to wiring (W ⁇ w) different from the wiring (X ⁇ x) as shown in FIG. It is also possible to supply a control signal synchronized with the start pulse signal SPX to the wiring W connected to the odd-numbered stages and supply a control signal synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the drain and gate of M4 of the control circuit SC are different from the wiring (X ⁇ x) (W A control signal synchronized with the start pulse signal SPX is supplied to the wiring W connected to the odd stages, and a control signal synchronized with the start pulse signal SPx is supplied to the wiring w connected to the even stages. You can also. In this way, the effect of reducing the load of the start pulse signal can also be obtained.
- the wiring (L ⁇ l) for supplying the initialization signal INTL ⁇ INTl is provided, but the present invention is not limited to this.
- the initialization terminal LTm is supplied with the start pulse signals SPX ⁇ SPx (X ⁇ x).
- the start pulse signals SPX ⁇ SPx (X ⁇ x) To the wiring (X ⁇ x), two pulses for initialization (a pulse with a width of 4H that rises simultaneously when the pulse from the output terminal of the final stage falls, and a pulse of the same type that rises with a delay of 1H from this) ) Can also be placed. In this way, the number of signal input lines can be reduced.
- a configuration in which the adjustment circuit AC is not provided in the unit circuit UCj stage of 8k + 4, 8k + 5, 8k + 6, 8k + 7, and 8k + 8 (k is 0 or more) is also possible.
- the drain and gate of M4 of the control circuit SC are connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX ⁇ SPx, but the present invention is not limited to this.
- the drain and gate of M4 of the control circuit SC are connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and a start pulse signal is applied to the wiring W connected to the odd-numbered stage.
- a control signal synchronized with SPX can be supplied, and a control signal synchronized with the start pulse signal SPx can be supplied to the wiring w connected to the even stages. In this way, the load of the start pulse signal can be reduced.
- wiring (L ⁇ l) for supplying the initialization signal INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTi ⁇ LTj is supplied to the initialization terminal LTi ⁇ LTj by the start pulse signals SPX ⁇ SPx (X ⁇ Connect to x), and two pulses for initialization (rising at the same time when the pulse from the output terminal of the last stage falls, and the pulse of width 4H rises to the wiring (X ⁇ x) 1H later than this The same type of pulse) can also be placed. In this way, the number of signal input lines can be reduced.
- Example 3 In FIG. 1 and FIGS. 3 to 5, the transistor M4 is provided in the m-stage unit circuit UCm, but the present invention is not limited to this.
- a transistor Mz can be provided (instead of the transistor M4).
- the drain of M10 is connected to CK1
- the source of M10 is connected to one electrode of the capacitor C1
- the gate (node nA) of M10 is connected to the capacitor.
- the other electrode of C1, the drain of M9, the drain of M8, the drain of Mz, the gate of M6, the source of M1, and the drain of M2 are connected.
- the gate of M8 (node nB) is connected to the drain of M7, the drain of M3, the drain of M6, and the source of M5, and the sources of Mz, M2, M3, M6 to M9, and M11 to M12 are connected to a low power source. It is connected to the potential VSS (VGL).
- the drain and gate of M1 are connected to the set terminal STm, the drain and gate of M5 are connected to the input terminal CK2, the gate of Mz (control transistor) is connected to the control terminal CTm, and each of M2, M3 and M12
- the gate is connected to the initialization terminal LTm, the gate of M7 is connected to the input terminal CK3, the gate of M9 is connected to the reset terminal RTm, and the gate of M11 is connected to the input terminal CK4.
- the connection relationships among the four input terminals CK1 to CK4, the set terminal STm, the reset terminal RTm, the output terminal OTm, the control terminal CTm, and the initialization terminal LTm are the same as those in FIGS.
- FIG. 24 shows potential fluctuations (signal waveforms) of the nodes nA and nB (at each stage).
- SPy and initialization signals INTL and INTl from the wiring L ⁇ l are all the same as in FIG.
- a control terminal CTm connected to the gate of Mz is provided.
- the control circuit SC including the transistor Mz is provided, and the control terminal CTm connected to the gate of Mz is connected to the wiring x that supplies the start pulse signal SPx. (See FIGS. 20 to 23). In this way, when the start pulse signal SPx rises, the transistor Mz can be turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”.
- the start pulse signal (SPX ⁇ SPx) is input to the set output terminal STm (connected to the gate and drain of M1), so that the transistor Mz is included instead of the control circuit SC.
- the adjustment circuit AC is provided, and the control terminal CTm connected to the gate of Mz is connected to the wiring P that supplies the low power supply potential VSS.
- the clock signal input to the input terminal CK1 is input when it rises for the first time after the operation period starts.
- an adjustment circuit AC including a transistor Mz is provided instead of the control circuit SC, and a control terminal CTm connected to the gate of Mz is connected to a wiring P that supplies a low power supply potential VSS.
- the operation of the first stage unit circuit UC1 (FIG. 21) is as follows.
- M1 is turned on
- the node nA (nA1 in FIG. 24) becomes “High”, and M6 and M10 are turned on.
- the node nB (nB1 in FIG. 24) becomes “Low” and M8 is turned OFF.
- the clock signal CKA from the wiring A rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKA is output from the output terminal OT1.
- the clock signal CKA falls, the potential of the node nA also falls.
- the operation of the fifth stage unit circuit UC5 (FIG. 21) is as follows.
- M1 is turned on
- the node nA (nA5 in FIG. 24) becomes “High”
- M6 and M10 are turned on.
- the node nB (nB5 in FIG. 24) becomes “Low” and M8 is turned OFF.
- the clock signal CKB from the wiring B rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKB is output from the output terminal OT5.
- the clock signal CKB falls, the potential of the node nA also falls.
- the operation of the ninth stage unit circuit UC9 (FIG. 22) is as follows. First, when the start pulse signal SPX rises, the transistor Mz is turned on to charge the node nA (nA9 in FIG. 24) to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on. On the other hand, the node nB (nB9 in FIG. 24) becomes “Low” and M8 is turned OFF.
- the operation of the n-th unit circuit UCn (FIG. 23) is as follows.
- M1 is turned ON
- the node nA is set to "High”
- M6 and M10 are turned ON.
- the node nB becomes “Low” and M8 is turned OFF.
- the clock signal CKb from the wiring b rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKb is output from the output terminal OTn.
- the clock signal CKb falls, the potential of the node nA also falls.
- the Mz gate of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX and SPx, but the present invention is not limited to this.
- the Mz gate of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x).
- the control signal synchronized with the start pulse signal SPX can be supplied to the wiring W connected to the odd-numbered stages, and the control signal synchronized with the start pulse signal SPx can be supplied to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- FIG. 29 shows that the potential fluctuation of each part in FIG. 29 is as shown in FIG.
- the Mz gate of the control circuit SC is connected to a wiring (W ⁇ w), a control signal synchronized with the start pulse signal SPX is supplied to the wiring W connected to the odd-numbered stages, and a control signal synchronized with the start pulse signal SPx is supplied to the wiring w connected to the even-numbered stages.
- the wiring (L ⁇ l) for supplying the initialization signals INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTm is supplied with the start pulse signals SPX ⁇ SPx (X ⁇ x).
- the start pulse signals SPX ⁇ SPx (X ⁇ x) To the wiring (X ⁇ x), two pulses for initialization (a pulse with a width of 4H that rises simultaneously when the pulse from the output terminal of the final stage falls, and a pulse of the same type that rises with a delay of 1H from this) ) Can also be placed. In this way, the number of signal input lines can be reduced.
- a configuration in which the adjustment circuit AC is not provided in the unit circuit UCj stage of 8k + 4, 8k + 5, 8k + 6, 8k + 7, and 8k + 8 (k is 0 or more) is also possible.
- the Mz gate of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX and SPx, but the present invention is not limited to this.
- the gate of Mz of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and the start pulse signal SPX is connected to the wiring W connected to the odd-numbered stage. It is also possible to supply a control signal to be synchronized and supply a control signal to be synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the wiring (L ⁇ l) for supplying the initialization signal INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTi ⁇ LTj is supplied to the initialization terminal LTi ⁇ LTj (X) as shown in FIGS. ⁇ Connect to x), and two pulses for initialization (rising at the same time when the pulse from the output terminal of the last stage falls, and the pulse of width 4H rises to the wiring (X ⁇ x) 1H later than this The same type of pulse) can also be placed. In this way, the number of signal input lines can be reduced.
- the connection relationships among the two input terminals CK1 to CK4, the set terminal STm, the reset terminal RTm, the output terminal OTm, the control terminal CTm, and the initialization terminal LTm are the same as those in FIGS.
- the potential fluctuation (signal waveform) of each part in FIG. 38 is as shown in FIG.
- the control terminal CTi connected to the gate of the transistor M2 is connected to the wiring x that supplies the start pulse signal SPx (FIGS. 37 and 38). reference).
- the transistor M2 can be turned on and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKd remains inactive when the clock signal CKa rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the operation of the seventh stage unit circuit UC7 (FIG. 38) is as follows.
- M1 is turned ON
- the node nA (nA7 in FIG. 24) becomes “High”
- M6 and M10 are turned ON.
- the node nB (nB7 in FIG. 24) becomes “Low” and M8 is turned OFF.
- the clock signal CKD from the wiring D rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKD is output from the output terminal OT7.
- the clock signal CKD falls, the potential of the node nA also falls.
- the operation of the unit circuit UC9 (FIG. 38) in the ninth stage is as follows. First, when the start pulse signal SPX rises, the transistor M2 is turned on, and the node nA (nA9 in FIG. 24) is charged to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on. On the other hand, the node nB (nB9 in FIG.
- the gate of Mz of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX ⁇ SPx, but is not limited thereto.
- the gate of M2 of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and the start pulse signal SPX is connected to the wiring W connected to the odd-numbered stage. It is also possible to supply a control signal to be synchronized and supply a control signal to be synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- FIG. 40 shows the configuration of m stages (unit circuit UCm) of the first and second shift registers SR1 and SR2 according to the sixth embodiment (m is a natural number). It is assumed that the stage where m is an odd number is included in the first shift register SR1, and the stage where m is an even number is included in the second shift register SR2.
- the unit circuit UCm includes two input terminals CK1 to CK2, a set terminal STm, a reset terminal RTm, an output terminal OTm, a control terminal CTm, an initialization terminal LTm, and an N channel.
- Transistors M1 to M12 and a capacitor C1 are provided, and an output terminal OTm is connected to the mth scanning signal line Gm of the liquid crystal panel.
- the drain of M10 and the gate of M7 are connected to CK1, the source of M10 is connected to one electrode of the capacitor C1, the drain of M11, the drain of M12, and the output terminal OTm, and the gate of M10 (node nA) ) Is connected to the other electrode of the capacitor C1, the drain of M9, the drain of M8, the gate of M6, the source of M1, and the drain of M2.
- the gate of M8 (node nB) is connected to the source of M4, the drain of M7, the drain of M3, the drain of M6, and the source of M5, and the sources of M2, M3, M6 to M9, and M11 to M12 are It is connected to the low power supply potential VSS (VGL).
- the drain and gate of M1 are connected to the set terminal STm, the drain and gate of M5 and the gate of M11 are connected to the input terminal CK2, the drain and gate of M4 (control transistor) are connected to the control terminal CTm, and M2 , M3 and M12 are connected to the initialization terminal LTm, the gate of M9 is connected to the reset terminal RTm, and the gate of M11 is connected to the input terminal CK2.
- Gate wiring (stem wiring) XY for supplying start pulse signals SPX / SPY, wiring (stem wiring) L for supplying initialization signal INTL, and wiring (power wiring) P for supplying low power supply potential VSS 2, wirings (trunk wirings) a to d for supplying four-phase clock signals CKa to CKd and wirings for supplying two-phase (gate) start pulse signals SPx and SPy to the plurality of wirings IL2 in FIG. (Stem wiring) x ⁇ y, wiring (stem wiring) l for supplying an initialization signal INT1, and wiring (power wiring) P for supplying a low power supply potential VSS are included.
- the input terminal CK1 is connected to the wiring A that supplies the clock signal CKA, and the input terminal CK2 is connected to the wiring B that supplies the clock signal CKB.
- the input terminal CK1 is connected to the wiring a that supplies the clock signal CKa, and the input terminal CK2 is connected to the wiring b that supplies the clock signal CKb.
- the input terminal CK1 is connected to the wiring C that supplies the clock signal CKC, and the input terminal CK2 is connected to the wiring D that supplies the clock signal CKD.
- M 8k + 4
- the input terminal CK1 is connected to the wiring c that supplies the clock signal CKc
- the input terminal CK2 is connected to the wiring d that supplies the clock signal CKd.
- the input terminal CK1 is connected to the wiring B that supplies the clock signal CKB, and the input terminal CK2 is connected to the wiring A that supplies the clock signal CKA.
- M 8k + 6
- the input terminal CK1 is connected to the wiring b that supplies the clock signal CKb
- the input terminal CK2 is connected to the wiring a that supplies the clock signal CKa.
- the input terminal CK1 is connected to the wiring D that supplies the clock signal CKD, and the input terminal CK2 is connected to the wiring C that supplies the clock signal CKC. ing.
- the input terminal CK1 is connected to the wiring d that supplies the clock signal CKd, and the input terminal CK2 is connected to the wiring c that supplies the clock signal CKc. ing.
- the set terminal STm 1
- the set terminal STm is connected to the wiring X that supplies the start pulse signal SPX
- the reset terminal RTm is connected to the m + 6 stage output terminal OT7
- the set terminal STm 2
- the set terminal STm Is connected to the wiring x for supplying the start pulse signal SPx
- the reset terminal RTm is connected to the m + 6 stage output terminal OT9.
- the reset terminal RTm is a wiring for supplying the initialization signal INTL.
- the start pulse signal SPX rises (at the start of the operation period PT)
- the node nB is set to “High”
- the transistor M8 is turned on
- the node nA the gate of the transistor M10 is charged to “Low”. be able to.
- the control circuit SC including the transistor M4 is provided in such a unit circuit UCm, and the control terminal CTm connected to the drain and gate of M4 is connected to the wiring x that supplies the start pulse signal SPx. (See FIG. 42).
- the node nB is set to “High”, the transistor M8 is turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKa remains inactive when the clock signal CKa rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the start pulse signal SPX rises, the node nB is set to “High”, the transistor M8 is turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”.
- the control circuit SC is used instead.
- An adjustment circuit AC including a transistor M4 is provided, and a control terminal CTm connected to the drain and gate of M4 is connected to a wiring P that supplies a low power supply potential VSS.
- the clock signal input to the input terminal CK1 is input to the input terminal CK2 for the first time after starting the operation period.
- an adjustment circuit AC including a transistor M4 is provided in place of the control circuit SC, and a control terminal CTm connected to the drain and gate of M4 is connected to a wiring P that supplies a low power supply potential VSS. In this way, by providing the adjustment circuit AC having the same configuration as the control circuit SC, the load around the transistor M4 can be made uniform at each stage, and the waveform of the output signal to the scanning signal line can be prevented from shifting from stage to stage. .
- the operation of the first stage unit circuit UC1 (FIG. 41) is as follows.
- M1 is turned on
- the node nA (nA1 in FIG. 44) becomes “High”, and M6 and M10 are turned on.
- the node nB (nB1 in FIG. 44) becomes “Low” and M8 is turned OFF.
- the clock signal CKA from the wiring A rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKA is output from the output terminal OT1.
- the clock signal CKA falls, the potential of the node nA also drops.
- the operation of the unit circuit UC5 (FIG. 41) in the fifth stage (first intermediate stage) is as follows.
- M1 is turned on
- the node nA (nA5 in FIG. 44) becomes “High”
- M6 and M10 are turned on.
- the node nB (nB5 in FIG. 44) becomes “Low” and M8 is turned OFF.
- the clock signal CKB from the wiring B rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKB is output from the output terminal OT5.
- the operation of the unit circuit UC9 (FIG. 42) in the ninth stage (second intermediate stage) is as follows. First, when the start pulse signal SPX rises, the node nB (nB9 in FIG. 44) is set to “High”, the transistor M8 is turned on, and the node nA (nA9 in FIG. 44) is charged to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on.
- the node nB becomes “Low” and M8 is turned OFF.
- the clock signal CKA from the wiring A rises, the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKA is output from the output terminal OT9.
- the potential of the node nA also drops.
- the node nB is “High” and the node nA Becomes “Low” (M10 is OFF), and the reset is completed.
- the initialization signal INTL rises and M2, 3 and 12 are turned ON, the node nA, the node nB and the output terminal OT9 are charged to “Low”.
- the operation of the n-th unit circuit UCn (FIG. 43) is as follows.
- M1 is turned ON
- the node nA is set to "High”
- M6 and M10 are turned ON.
- the node nB becomes “Low” and M8 is turned OFF.
- the clock signal CKb from the wiring b rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKb is output from the output terminal OTn.
- the clock signal CKb falls, the potential of the node nA also falls.
- the drain and gate of M4 of the control circuit SC are connected to the wiring (X ⁇ x) for supplying the start pulse signal SPX ⁇ SPx, but the present invention is not limited to this.
- the drain and gate of M4 of the control circuit SC are connected to wiring (W ⁇ w) different from the wiring (X ⁇ x). It is also possible to supply a control signal synchronized with the start pulse signal SPX to the wiring W connected to the odd-numbered stages and supply a control signal synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the drain and gate of M4 of the control circuit SC are different from the wiring (X ⁇ x) (W A control signal synchronized with the start pulse signal SPX is supplied to the wiring W connected to the odd stages, and a control signal synchronized with the start pulse signal SPx is supplied to the wiring w connected to the even stages. You can also In this way, the effect of reducing the load of the start pulse signal can also be obtained.
- the wiring (L ⁇ l) for supplying the initialization signal INTL ⁇ INTl is provided, but the present invention is not limited to this.
- the initialization terminal LTm is supplied with the start pulse signals SPX and SPx (X ⁇ x).
- the start pulse signals SPX and SPx (X ⁇ x) are supplied to the wiring (X ⁇ x).
- two pulses for initialization a pulse with a width of 4H that rises simultaneously when the pulse from the output terminal of the final stage falls, and a pulse of the same type that rises with a delay of 1H from this) ) Can also be placed. In this way, the number of signal input lines can be reduced.
- the drain and gate of M4 of the control circuit SC are connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX ⁇ SPx, but the present invention is not limited to this.
- the drain and gate of M4 of the control circuit SC are connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and a start pulse signal is applied to the wiring W connected to an odd-numbered stage.
- a control signal synchronized with SPX can be supplied, and a control signal synchronized with the start pulse signal SPx can be supplied to the wiring w connected to the even stages. In this way, the load of the start pulse signal can be reduced.
- the wiring (L ⁇ l) for supplying the initialization signals INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTi ⁇ LTj is supplied to the initialization terminal LTi ⁇ LTj (X) as shown in FIGS. ⁇ Connect to x), and two pulses for initialization (rising at the same time when the pulse from the output terminal of the last stage falls, and the pulse of width 4H rises to the wiring (X ⁇ x) 1H later than this The same type of pulse) can also be placed. In this way, the number of signal input lines can be reduced.
- Example 8 In FIGS. 40 to 43, the transistor M4 is provided in the m-stage unit circuit UCm, but the present invention is not limited to this.
- a transistor Mz can be provided (instead of the transistor M4).
- the drain of M10 and the gate of M7 are connected to CK1
- the source of M10 is connected to one electrode of the capacitor C1
- the gate of M10 node nA
- the gate of M8 (node nB) is connected to the drain of M7, the drain of M3, the drain of M6, and the source of M5, and the sources of Mz, M2, M3, M6 to M9, and M11 to M12 are connected to a low power source. It is connected to the potential VSS (VGL).
- the drain and gate of M1 are connected to the set terminal STm, the drain and gate of M5 and the gate of M11 are connected to the input terminal CK2, the gate of Mz (control transistor) is connected to the control terminal CTm, and M2, M3
- the gates of M12 and M12 are connected to the initialization terminal LTm, and the gate of M9 is connected to the reset terminal RTm.
- the connection relationships between the two input terminals CK1 to CK2, the set terminal STm, the reset terminal RTm, the output terminal OTm, the control terminal CTm, and the initialization terminal LTm are the same as those in FIGS.
- FIG. 62 shows potential fluctuations (signal waveforms) of the nodes nA and nB (at each stage).
- clock signals CKA to CKD from the wirings A to D clock signals CKa to CKd from the wirings a to d, and start pulse signals SPX, SPY, SPx, from the wirings X, Y, x, and y.
- SPy and initialization signals INTL and INTl from the wiring L ⁇ l are all the same as in FIG. 44 (FIG. 6).
- a wiring X for supplying a start pulse signal SPX (see FIG. 60).
- the control circuit SC including the transistor Mz
- the control terminal CTm connected to the gate of Mz is connected to the wiring x that supplies the start pulse signal SPx. (See FIG. 60).
- the transistor Mz can be turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even when the clock signal CKD remains inactive when the clock signal CKC rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the transistor Mz can be turned on, and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKd remains inactive when the clock signal CKc rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the control circuit SC is used instead.
- An adjustment circuit AC including a transistor Mz is provided, and a control terminal CTm connected to the gate of Mz is connected to a wiring P that supplies a low power supply potential VSS.
- the clock signal input to the input terminal CK1 is input to the input terminal CK2 for the first time after starting the operation period.
- an adjustment circuit AC including a transistor Mz is provided instead of the control circuit SC, and a control terminal CTm connected to the gate of Mz is connected to a wiring P that supplies a low power supply potential VSS.
- the operation of the unit circuit UC5 (FIG. 60) in the fifth stage (first intermediate stage) is as follows.
- M1 is turned on
- the node nA (nA5 in FIG. 62) becomes “High”
- M6 and M10 are turned on.
- the node nB (nB5 in FIG. 62) becomes “Low” and M8 is turned OFF.
- the clock signal CKB from the wiring B rises
- the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKB is output from the output terminal OT5.
- the operation of the unit circuit UC9 (FIG. 60) in the ninth stage (second intermediate stage) is as follows. First, when the start pulse signal SPX rises, the transistor Mz is turned on to charge the node nA (nA9 in FIG. 62) to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on. On the other hand, the node nB becomes “Low” and M8 is turned OFF.
- the Mz gate of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX and SPx, but the present invention is not limited to this.
- the Mz gate of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), as shown in FIG. 64 showing the potential fluctuation (signal waveform) of each part.
- the control signal synchronized with the start pulse signal SPX can be supplied to the wiring W connected to the odd-numbered stages, and the control signal synchronized with the start pulse signal SPx can be supplied to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the Mz gate of the control circuit SC is connected to a wiring (W ⁇ w), a control signal synchronized with the start pulse signal SPX is supplied to the wiring W connected to the odd-numbered stages, and a control signal synchronized with the start pulse signal SPx is supplied to the wiring w connected to the even-numbered stages.
- the wiring (L ⁇ l) for supplying the initialization signals INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTm is supplied with the start pulse signals SPX and SPx (X ⁇ x).
- the start pulse signals SPX and SPx (X ⁇ x) are supplied to the wiring (X ⁇ x).
- two pulses for initialization a pulse with a width of 4H that rises simultaneously when the pulse from the output terminal of the final stage falls, and a pulse of the same type that rises with a delay of 1H from this) ) Can also be placed. In this way, the number of signal input lines can be reduced.
- a configuration in which the adjustment circuit AC is not provided in the unit circuit UCj stage of 2, 8k + 5, 8k + 6, 8k + 7, and 8k + 8 (k is 0 or more) is also possible.
- the Mz gate of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX and SPx, but the present invention is not limited to this.
- the gate of Mz of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and the start pulse signal SPX is connected to the wiring W connected to the odd-numbered stage. It is also possible to supply a control signal to be synchronized and supply a control signal to be synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the wiring (L ⁇ l) for supplying the initialization signals INTL ⁇ INT1 is provided, but the present invention is not limited to this.
- the initialization terminal LTi ⁇ LTj is supplied to the wiring (X ⁇ Connect to x), and two pulses for initialization (rising at the same time when the pulse from the output terminal of the last stage falls, and the pulse of width 4H rises to the wiring (X ⁇ x) 1H later than this The same type of pulse) can also be placed. In this way, the number of signal input lines can be reduced.
- the connection relationships among the two input terminals CK1 to CK2, the set terminal STm, the reset terminal RTm, the output terminal OTm, the control terminal CTm, and the initialization terminal LTm are the same as those in FIGS. Further, the potential fluctuation (signal waveform) of each part in FIG. 76 is as shown in FIG.
- the control terminal CTi connected to the gate of the transistor M2 is connected to the wiring x that supplies the start pulse signal SPx.
- the transistor M2 can be turned on and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKa remains inactive when the clock signal CKa rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the control terminal CTi connected to the gate of the transistor M2 is connected to the wiring X that supplies the start pulse signal SPX.
- the transistor M2 can be turned on and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even when the clock signal CKD remains inactive when the clock signal CKC rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the control terminal CTi connected to the gate of the transistor M2 is connected to the wiring x that supplies the start pulse signal SPx.
- the transistor M2 can be turned on and the node nA (the gate of the transistor M10) can be charged to “Low”. Therefore, even if the clock signal CKd remains inactive when the clock signal CKc rises for the first time after the start of the operation period, a pulse is output from the output terminal OTm (due to the gate-drain parasitic capacitance PC of the transistor M10). Such a malfunction is avoided.
- the operation of the seventh stage unit circuit UC7 (FIG. 76) is as follows.
- M1 When a pulse is output from the output terminal of the third stage unit circuit, M1 is turned ON, the node nA (nA7 in FIG. 62) becomes “High”, and M6 and M10 are turned ON.
- the node nB (nB7 in FIG. 62) becomes “Low” and M8 is turned OFF.
- the clock signal CKD from the wiring D rises, the potential of the node nA further rises and a pulse (width 4H) of the clock signal CKD is output from the output terminal OT7.
- the clock signal CKD falls, the potential at the node nA also drops.
- the operation of the ninth stage unit circuit UC9 (FIG. 76) is as follows. First, when the start pulse signal SPX rises, the transistor M2 is turned on, and the node nA (nA9 in FIG. 62) is charged to “Low”. Thereby, when the clock signal CKA rises for the first time after the start of the operation period, a malfunction that a pulse is generated from the output terminal OT9 is avoided. Thereafter, when a pulse is output from the output terminal OT5 of the unit circuit UC5 at the fifth stage, M1 is turned on, the node nA becomes “High”, and M6 and M10 are turned on. On the other hand, the node nB (nB9 in FIG.
- the Mz gate of the control circuit SC is connected to the wiring (X ⁇ x) for supplying the start pulse signals SPX ⁇ SPx, but the present invention is not limited to this.
- the gate of M2 of the control circuit SC is connected to a wiring (W ⁇ w) different from the wiring (X ⁇ x), and the start pulse signal SPX is connected to the wiring W connected to the odd-numbered stage. It is also possible to supply a control signal to be synchronized and supply a control signal to be synchronized with the start pulse signal SPx to the wiring w connected to the even-numbered stages. In this way, the load of the start pulse signal can be reduced.
- the gate driver shown in FIG. 2 includes wirings (trunk wirings) X, Y, x, and y for supplying four-phase (gate) start pulse signals SPX, SPY, SPx, and SPy, and the first embodiment 10-10. 1 and second shift registers SR1 and SR2 are included, but in order to reduce the load of the start pulse signal, the wirings (trunk lines) X, Y, x, and y do not overlap the first and second shift registers SR1 and SR2. It is desirable to arrange so that. For example, as shown in FIG.
- the pulse to be placed on the wiring W / w may be set before the first clock of the clock signal (CKA) having the most advanced phase, and is shifted in time from the start pulse. (See FIG. 80).
- FIG. 5 of the first embodiment is modified, and as shown in FIG. 81, the drain and gate of M4 of the unit circuit UCn-5 are connected to the wiring Y, and the drain and gate of M4 of the unit circuit UCn-4 are connected to the wiring y. Connect to. Similarly, FIG.
- FIG. 17 of the second embodiment is modified as shown in FIG. 82
- FIG. 23 of the third embodiment is modified as shown in FIG. 83
- FIG. 34 of the fourth embodiment is transformed as shown in FIG. 42 of the sixth embodiment is modified, and as shown in FIG. 85, the drain and gate of M4 of the unit circuit UC11 are connected to the wiring Y, and the drain and gate of M4 of the unit circuit UC11 are connected to the wiring y.
- FIG. 54 of Example 7 is modified as shown in FIG. 86
- FIG. 60 of Example 8 is modified as shown in FIG. 87
- FIG. 71 of Example 9 is modified as shown in FIG.
- a TFT thin film transistor
- an oxide semiconductor for example, IGZO (InGaZnOx)
- IGZO InGaZnOx
- a leakage current is likely to be generated due to a rise in the potential of the gate (node nA) of the transistor M10 due to the gate-drain parasitic capacitance PC of the transistor M10 (TFTs using an oxide semiconductor are excellent in ON characteristics). Therefore, it can be said that the significance of reliably charging the node nA to VSS (Low) at the start of the operation period as in the above embodiments is significant.
- a vertical blanking period (including a non-operation period) is often increased in order to reduce power consumption, and the node nA may be discharged during that period. Also in this point, it can be said that the node nA is reliably charged to VSS at the start of the operation period.
- TFTs thin film transistors
- amorphous silicon or polysilicon as the semiconductor layer
- Such a TFT has a larger leakage current in the OFF state than a TFT using an oxide semiconductor, and the node nA may be discharged in the vertical blanking period (even if the vertical blanking period is not long).
- the parasitic capacitance of the transistor M10 is large, and a large leakage current is likely to be generated in the M10 by pushing up the drain when the clock rises. It can be said that the significance of charging the VSS is great.
- the shift register includes the first stage, the first middle stage, the second middle stage, and the last stage, and the first input terminal, the second input terminal, An output terminal connected to the first input terminal via the output transistor, a setting circuit connected to the second input terminal and the output transistor, and setting the potential of the control terminal of the output transistor are provided, and the first input terminal A clock signal having a different phase is input to the second input terminal, and a control circuit for inputting the control signal is provided in the second intermediate stage, and the shift start signal input to the first stage is active.
- the operation period is the period from when the output of the last stage becomes active to inactive (or the period from when the shift start signal becomes active until the last stage is reset).
- the clock signal input to the second intermediate stage first input terminal and the clock signal input to the second intermediate stage second input terminal are fixed inactive before the operation period starts. It can also be configured.
- control circuit may not be provided in the first middle stage.
- This shift register may have a configuration having the same configuration as that of the control circuit in the first halfway and an adjustment circuit to which a constant potential signal is input instead of the control signal.
- the shift register may have a configuration in which an initialization circuit that has the same configuration as the control circuit and receives an initialization signal is provided in the first intermediate stage.
- control signal may be a shift start signal input to the first stage.
- the setting circuit includes first and second setting transistors, the second input terminal is connected to the control terminal of the second setting transistor via the first setting transistor, and the control terminal of the output transistor
- the output transistor may be turned off when the clock signal input to the second input terminal is active and is connected to the constant potential source via the second setting transistor.
- control circuit may include a control transistor connected to the control terminal of the second setting transistor, and the control signal may be input to the control terminal of the control transistor.
- control circuit may include a control transistor connected to the control terminal of the output transistor, and the control signal may be input to the control terminal of the control transistor.
- an oxide semiconductor may be used for the semiconductor layer of the output transistor.
- the shift register further includes a third intermediate stage, and in the third intermediate stage, a first input terminal, a second input terminal, an output terminal connected to the first input terminal via the output transistor, and a second A setting circuit connected to the input terminal and the output transistor to set the potential of the control terminal of the output transistor, and a clock signal having a different phase is input to the first input terminal and the second input terminal,
- the stage is provided with a control circuit connected to the setting circuit and to which a control signal is input.
- a clock signal input to the second intermediate input terminal is inactive, and a control signal input to the second intermediate control circuit and a control signal input to the third intermediate control circuit are Different It may be configured to be supplied from the wiring.
- the driver circuit includes the shift register, and includes a control wiring for transmitting the control signal, a first clock wiring for transmitting a clock signal input to the first input terminal, and a clock signal input to the second input terminal. And a second clock wiring for transmitting the signal.
- control wiring may be arranged so as not to overlap the shift register.
- the present invention is not limited to the above-described embodiments, and those obtained by appropriately modifying the above-described embodiments based on common general technical knowledge and those obtained by combining them are also included in the embodiments of the present invention.
- the liquid crystal display device of the present invention is suitable for various liquid crystal displays and liquid crystal televisions, for example.
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Abstract
Description
実施例1にかかる第1および第2シフトレジスタSR1・SR2のm段(単位回路UCm)の構成例を図1に示す(mは自然数)。なお、mが奇数の段は第1シフトレジスタSR1に含まれ、mが偶数の段は第2シフトレジスタSR2に含まれるものとする。
図1・図3~図5では、m=8k+1および8k+2(kは1以上)の単位回路UCm以外の段に調整回路ACを設けているがこれに限定されない。図14(a)(b)に示すように、i=8k+1および8k+2(kは1以上)の単位回路UCi段にはトランジスタM4を含む制御回路SCを設ける一方、j=1、2、8k+3、8k+4、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段には調整回路ACを設けない構成も可能である。この場合の第1および第2シフトレジスタの第1~第n段(m=1~n)の構成を図15~図17に示しておく。なお、図15~図17の各部の電位変動(信号波形)は図6のとおりである。実施例2では、各シフトレジスタ内のトランジスタの数が削減されるので、製造歩留まりが高められる。
図1・図3~図5では、m段の単位回路UCmにトランジスタM4を設けているがこれに限定されない。図20に示すように、(トランジスタM4のかわりに)トランジスタMzを設けることもできる。図20では、M10のドレインがCK1に接続され、M10のソースが、容量C1の一方の電極、M11のドレイン、M12のドレインおよび出力端子OTmに接続され、M10のゲート(ノードnA)が、容量C1のもう一方の電極、M9のドレイン、M8のドレイン、Mzのドレイン、M6のゲート、M1のソース、およびM2のドレインに接続されている。また、M8のゲート(ノードnB)が、M7のドレイン、M3のドレイン、M6のドレインおよびM5のソースに接続され、Mz、M2、M3、M6~M9およびM11~M12それぞれのソースが、低電源電位VSS(VGL)に接続されている。また、M1のドレインおよびゲートがセット端子STmに接続され、M5のドレインおよびゲートが入力端子CK2に接続され、Mz(制御トランジスタ)のゲートが制御端子CTmに接続され、M2、M3およびM12それぞれのゲートが初期化端子LTmに接続され、M7のゲートが入力端子CK3に接続され、M9のゲートがリセット端子RTmに接続され、M11のゲートが入力端子CK4に接続されている。
図20~図23では、m=8k+1および8k+2(kは1以上)の単位回路UCm以外の段に調整回路ACを設けているがこれに限定されない。図31(a)(b)に示すように、i=8k+1および8k+2(kは1以上)の単位回路UCi段にはトランジスタMzを含む制御回路SCを設ける一方、j=1、2、8k+3、8k+4、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段には調整回路ACを設けない構成も可能である。この場合の第1および第2シフトレジスタの第1~第n段(m=1~n)の構成を図32~図34に示しておく。なお、図32~図34の各部の電位変動(信号波形)は図24のとおりである。実施例4では、各シフトレジスタ内のトランジスタの数が削減されるので、製造歩留まりが高められる。
実施例4においてトランジスタMzを除去し、そのかわりにM2を制御トランジスタとして、M2のゲートを制御端子CTmに接続する構成も可能である。すなわち、図37(a)(b)に示すように、i=8k+1および8k+2(kは1以上)の単位回路UCi段ではトランジスタM2を制御回路SCとし、M2のゲートを制御端子CTmに接続する一方、j=1、2、8k+3、8k+4、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段ではM2のゲートを初期化端子LTiに接続する。
実施例6にかかる第1および第2シフトレジスタSR1・SR2のm段(単位回路UCm)の構成を図40に示す(mは自然数)。なお、mが奇数の段は第1シフトレジスタSR1に含まれ、mが偶数の段は第2シフトレジスタSR2に含まれるものとする。
図40~図43では、m=8k+1および8k+2並びに8k+3および8k+4(kは1以上)の単位回路UCm以外の段に調整回路ACを設けているがこれに限定されない。図52(a)(b)に示すように、i=8k+1および8k+2並びに8k+3および8k+4(kは1以上)の単位回路UCi段にはトランジスタM4を含む制御回路SCを設ける一方、j=1~4、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段には調整回路ACを設けない構成も可能である。この場合の第1および第2シフトレジスタの第1~第n段(m=1~n)の構成を図53~図55に示しておく。なお、図53~図55の各部の電位変動(信号波形)は図44のとおりである。実施例7では、各シフトレジスタ内のトランジスタの数が削減されるので、製造歩留まりが高められる。
図40~図43では、m段の単位回路UCmにトランジスタM4を設けているがこれに限定されない。図58に示すように、(トランジスタM4のかわりに)トランジスタMzを設けることもできる。図58では、M10のドレインおよびM7のゲートがCK1に接続され、M10のソースが、容量C1の一方の電極、M11のドレイン、M12のドレインおよび出力端子OTmに接続され、M10のゲート(ノードnA)が、容量C1のもう一方の電極、M9のドレイン、M8のドレイン、Mzのドレイン、M6のゲート、M1のソース、およびM2のドレインに接続されている。また、M8のゲート(ノードnB)が、M7のドレイン、M3のドレイン、M6のドレインおよびM5のソースに接続され、Mz、M2、M3、M6~M9およびM11~M12それぞれのソースが、低電源電位VSS(VGL)に接続されている。また、M1のドレインおよびゲートがセット端子STmに接続され、M5のドレインおよびゲート並びにM11のゲートが入力端子CK2に接続され、Mz(制御トランジスタ)のゲートが制御端子CTmに接続され、M2、M3およびM12それぞれのゲートが初期化端子LTmに接続され、M9のゲートがリセット端子RTmに接続されている。
図59~図61では、m=8k+1および8k+2並びに8k+3および8k+4(kは1以上)の単位回路UCm以外の段に調整回路ACを設けているがこれに限定されない。図69(a)(b)に示すように、i=8k+1および8k+2並びに8k+3および8k+4(kは1以上)の単位回路UCi段にはトランジスタMzを含む制御回路SCを設ける一方、j=1、2、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段には調整回路ACを設けない構成も可能である。この場合の第1および第2シフトレジスタの第1~第n段(m=1~n)の構成を図70~図72に示しておく。なお、図70~図72の各部の電位変動(信号波形)は図62のとおりである。実施例9では、各シフトレジスタ内のトランジスタの数が削減されるので、製造歩留まりが高められる。
実施例9においてトランジスタMzを除去し、そのかわりにM2を制御トランジスタとしてM2のゲートを制御端子CTmに接続する構成も可能である。すなわち、図75(a)(b)に示すように、i=8k+1および8k+2並びに8k+3および8k+4(kは1以上)の単位回路UCi段ではトランジスタM2を制御回路SCとし、M2のゲートを制御端子CTmに接続する一方、j=1、2、8k+5、8k+6、8k+7、および8k+8(kは0以上)の単位回路UCj段ではM2のゲートを初期化端子LTiに接続する。
図2のゲートドライバには、4相の(ゲート)スタートパルス信号SPX・SPY・SPx・SPyそれぞれを供給する配線(幹配線)X・Y・x・yと、上記実施例1-10の第1および第2シフトレジスタSR1・SR2が含まれるが、スタートパルス信号の負荷を低減するため、配線(幹配線)X・Y・x・yを第1および第2シフトレジスタSR1・SR2に重ならないように配置することが望ましい。例えば、図78(a)に示すように、液晶パネル上にゲートドライバをモノリシック形成する場合には、ガラス基板の短辺となる2つのエッジ(ガラス端面)の一方と第1シフトレジスタSR1との間に配線X・Yを形成し、上記2つのエッジの他方と第2シフトレジスタSR2との間に配線x・yを形成したり、図78(b)に示すように、表示部DAと第1シフトレジスタSR1との間に配線X・Yを形成(配線A-D・Lは上記2つのエッジの一方と第1シフトレジスタSR1との間に形成)し、表示部DAと第2シフトレジスタSR2との間に配線x・yを形成(配線a-d・lは上記2つのエッジの他方と第2シフトレジスタSR2との間に形成)したりする。なお、額縁スペースがとれない場合には、図78(c)に示すように、他の配線(例えば、配線L・l)それぞれを第1および第2シフトレジスタSR1・SR2に重ねて配置することもできる。
SR1 第1シフトレジスタ
SR2 第2シフトレジスタ
GD ゲートドライバ
SD ソースドライバ
DCC 表示制御回路
GLm (m段に接続する)走査信号線
UCm 単位回路(m段)
CK1~CK4 入力端子
STm セット端子(m段)
CTm 制御端子(m段)
RTm リセット端子(m段)
OTm 出力端子(m段)
M1~M12 トランジスタ
SC 制御回路
AC 調整回路
A~D クロック信号CKA~CKDを供給する配線
a~d クロック信号CKa~CKdを供給する配線
X・Y スタートパルス信号SPX・SPY(制御信号)を供給する配線
x・y スタートパルス信号SPx・SPy(制御信号)を供給する配線
L・l 初期化信号INTL・INTlを供給する配線
P 電源電位(VSS)を供給する配線
W・w 制御信号を供給する配線
PT 動作期間
NT 非動作期間
Claims (15)
- 初段、第1中途段、第2中途段、および末段を含み、
第1および第2中途段それぞれに、クロック信号が入力される第1入力端子と、上記クロック信号と別位相のクロック信号が入力される第2入力端子と、出力トランジスタを介して第1入力端子に接続された出力端子と、第2入力端子および出力トランジスタに接続し、出力トランジスタの制御端子の電位を設定する設定回路とが設けられ、第1入力端子と第2入力端子とに別位相のクロック信号が入力され、
第2中途段に、上記設定回路に接続し、制御信号が入力される制御回路が設けられ、
初段に入力されるシフト開始信号がアクティブになってから末段の出力がアクティブから非アクティブになるまでの期間を動作期間として、
第2中途段の第1入力端子に入力されるクロック信号が動作期間開始後に初めてアクティブ化したときに、第2中途段の第2入力端子に入力されるクロック信号が非アクティブであるシフトレジスタ。 - 第2中途段の第1入力端子に入力されるクロック信号および第2中途段の第2入力端子に入力されるクロック信号は、動作期間開始前に非アクティブに固定されている請求項1記載のシフトレジスタ。
- 第1中途段の第1入力端子に入力されるクロック信号が動作期間開始後に初めてアクティブ化したときに、第1中途段の第2入力端子に入力されるクロック信号が非アクティブではない請求項1記載のシフトレジスタ。
- 第1中途段には上記制御回路が設けられていない請求項1記載のシフトレジスタ。
- 第1中途段に、上記制御回路と同一構成を有し、制御信号のかわりに定電位信号が入力される調整回路が設けられた請求項1記載のシフトレジスタ。
- 上記第1中途段に、上記制御回路と同一構成を有し、初期化信号が入力される初期化回路が設けられた請求項1記載のシフトレジスタ。
- 上記制御信号として上記シフト開始信号が用いられる請求項1記載のシフトレジスタ。
- 上記設定回路に第1および第2設定トランジスタが含まれ、
第2入力端子が第1設定トランジスタを介して第2設定トランジスタの制御端子に接続されるとともに、出力トランジスタの制御端子が、第2設定トランジスタを介して定電位源に接続され、
第2入力端子に入力されるクロック信号がアクティブのときに、出力トランジスタがOFFする請求項1記載のシフトレジスタ。 - 上記制御回路に、第2設定トランジスタの制御端子に接続する制御トランジスタが含まれ、この制御トランジスタの制御端子に上記制御信号が入力される請求項8記載のシフトレジスタ。
- 上記制御回路に、出力トランジスタの制御端子に接続する制御トランジスタが含まれ、この制御トランジスタの制御端子に上記制御信号が入力される請求項8記載のシフトレジスタ。
- 出力トランジスタの半導体層に、酸化物半導体が用いられている請求項1記載のシフトレジスタ。
- 第3中途段をさらに含み、
第3中途段に、第1入力端子と、第2入力端子と、出力トランジスタを介して第1入力端子に接続された出力端子と、第2入力端子および出力トランジスタに接続し、出力トランジスタの制御端子の電位を設定する設定回路とが設けられ、上記第1入力端子と第2入力端子とに別位相のクロック信号が入力され、第3中途段に、上記設定回路に接続し、制御信号が入力される制御回路が設けられ、第3中途段の第1入力端子に入力されるクロック信号が動作期間開始後に初めてアクティブ化したときに、第3中途段の第2入力端子に入力されるクロック信号が非アクティブであり、
上記第2中途段の制御回路に入力される制御信号と第3中途段の制御回路に入力される制御信号とが、異なる配線から供給される請求項1記載のシフトレジスタ。 - 請求項1~12のいずれか1項に記載のシフトレジスタを備え、上記制御信号を伝達する制御配線と、第1入力端子に入力されるクロック信号を伝達する第1クロック配線と、第2入力端子に入力されるクロック信号を伝達する第2クロック配線とが設けられたドライバ回路。
- 上記制御配線がシフトレジスタと重ならないように配されている請求項13記載のドライバ回路。
- 請求項1~12のいずれか1項に記載のシフトレジスタを備えた表示装置。
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CN201380012540.5A CN104254890B (zh) | 2012-03-12 | 2013-03-05 | 移位寄存器、驱动电路、显示装置 |
EP13760746.1A EP2827335B1 (en) | 2012-03-12 | 2013-03-05 | Shift register, driver circuit and display device |
JP2014504811A JP5819514B2 (ja) | 2012-03-12 | 2013-03-05 | シフトレジスタ、ドライバ回路、表示装置 |
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CN104254890A (zh) | 2014-12-31 |
JP5819514B2 (ja) | 2015-11-24 |
EP2827335B1 (en) | 2018-07-18 |
EP2827335A1 (en) | 2015-01-21 |
EP2827335A4 (en) | 2015-04-22 |
JPWO2013137069A1 (ja) | 2015-08-03 |
US20150030116A1 (en) | 2015-01-29 |
US9495929B2 (en) | 2016-11-15 |
CN104254890B (zh) | 2017-03-08 |
KR20140141597A (ko) | 2014-12-10 |
TW201401287A (zh) | 2014-01-01 |
MY167302A (en) | 2018-08-16 |
KR101592807B1 (ko) | 2016-02-05 |
SG11201405648VA (en) | 2014-11-27 |
TWI534818B (zh) | 2016-05-21 |
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