TWI301256B - Driving circuit and method of flat panel display - Google Patents

Driving circuit and method of flat panel display Download PDF

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Publication number
TWI301256B
TWI301256B TW94110299A TW94110299A TWI301256B TW I301256 B TWI301256 B TW I301256B TW 94110299 A TW94110299 A TW 94110299A TW 94110299 A TW94110299 A TW 94110299A TW I301256 B TWI301256 B TW I301256B
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TW
Taiwan
Prior art keywords
displacement
signal
basic
register
transistor
Prior art date
Application number
TW94110299A
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Chinese (zh)
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TW200634686A (en
Inventor
Shiuan Fang Shy
Yu Hsin Ting
jian shen Yu
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Au Optronics Corp
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Application filed by Au Optronics Corp filed Critical Au Optronics Corp
Priority to TW94110299A priority Critical patent/TWI301256B/en
Priority claimed from US11/332,922 external-priority patent/US7830352B2/en
Publication of TW200634686A publication Critical patent/TW200634686A/en
Application granted granted Critical
Publication of TWI301256B publication Critical patent/TWI301256B/en

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Description

1301256

Case No. 9411029Q 修正一修正5, invention description (1) [Technical field to which the invention pertains] The present invention relates to a flat display crying relating to a flat having a precharge function: § as a circuit, and particularly "," The circuit is not a fast drive. [Prior Art] Generally, the conventional active drive component includes a matrix pixel. Each pixel is temporarily stored by the thin film electric data line and the tantalum process. The device is integrated on the glass substrate, and the two-way time-series scanning displacement is temporarily composed of the gate and the gate line, while the horizontal timing sweep;::= is composed of the shifter, the switch and the data line, 4 = = = = With the increase of the resolution, the relative pixel ^ = electricity - drop 'easy to cause the phenomenon of insufficient charging. 曰 1 under f above: see the solution, there are many patents provided, 笫 1A map to 1C and 2A and 2B - 2ϊ, 、, 5th, 892, 493 and 6 731 26^ '& 2, 7 knives for the United States with ice a , the invention example of the number, which makes it easy to get early Ray paths marked at block t), right before the input signal, r ^ ", wait until the correct signal input, since the pressure difference voltage # air will easily charged to the two positioning. However, the additional pre-charge circuit is poor; ^ additional pre-charge control signals and pre-charge voltages, which in turn require a matte transistor, making the architecture more complex. Figure 3A shows a conventional lateral timing scanning displacement register frame which is composed of a displacement register 1~^3, a bidirectional switching circuit ^-(1]^", and a round-trip TG constitutes a horizontal starting pulse. The wave signal HST is first sent to the bidirectional switching power ^^direc, and the scanning direction is selected by the bidirectional switching circuit with -di rec

HI ifJfitelMiriUWiiJKl·! υ«/'Λ5ΙΛ,·Ρ·Μ^„____________' "" -----------—J Page 7 1301256 Month a shy Zheng j No. 9411f) 2QQ_ V. DESCRIPTION OF THE INVENTION (2) Selector input displacement temporary storage crying ρι~cpq wave generates a certain amount of round-out pulse wave than input pulse, HSR2, ugly 3...) will follow the sequence ·;), this output pulse Wave (if the data level is stored in the halogen. The sequence is turned on, so that the RGB signal line will provide the pre-charging function of the above-mentioned traditional horizontal time, and the + ^ T bit private register architecture cannot increase the box right: this Can not improve the performance of the display, if you want to add pre-charging function, #旧庄 this if you want to function the circuit side ^ ^ ^, 枓 line for additional increase with pre-charge J 峪 10,000, as shown in Figure 3β. SUMMARY OF THE INVENTION The embodiment of the present invention includes a plurality of basic scanning bits and a horizontal starting signal unit including a bidirectional switching and a data line, and the displacement temporary storage is connected to the displacement temporary crying to the transmission brake; Inter-sequence shift register unit # is to generate such a horizontal start register unit Each of the basic scan bits of the subsequent stage of the shift register unit provides a shift register generator circuit, which couples the signals and receives the signals of the pulse signals to the bidirectional cut register. The driving circuit of the flat panel display, Baoyi ^7〇, a pair of complementary clock signal lines. Each level of basic scanning displacement register is a displacement register, a transmission gate and to the bidirectional switching circuit, the transmission gate is coupled to an RGB signal. The input data line coupling wires are respectively coupled to the plurality of basic sweep displacement registers; the horizontal start signal generates a first stage and another level basic scan displacement circuit; wherein each stage basic sweep register generates an output The signal is given to the bidirectional switching circuit in the unit, and the bidirectional switching circuit in the same unit is also page 8 1301256

Receiving an output signal generated by the displacement of the displacement in the subsequent basic scan shift register unit. The embodiment of the present invention also provides a method for driving a flat panel display, comprising: using a lateral start signal to make the output pulse width of a bidirectional control circuit twice as wide as the original, and according to the bidirectional control A double pulsed scan pulse is generated. The invention can utilize the three-terminal 'can convert a single scan pulse to a double sweep precharge, and the second pulse wave _ this way does not require an additional precharge drive signal line, and only Need to add three more simple. The non-gate gate generates a double-scan pulse wave circuit pulse, which can be used by the first pulse wave to input the correct pixel voltage into the electrical circuit block, which can be achieved without an additional thin film transistor. The above, and other objects of the present invention will be more apparent from the following description. The preferred embodiments of the present invention are described below. According to the embodiment of the present invention, the horizontal timing scanning displacement β-level basic scanning displacement register unit (1 - 2a is represented by jC3 in the figure), and a pair of complementary clock signal lines HCK / XHCK Start signal generator HST. Each level of the unit (in the figure, the ΒΠ~BC3 table respectively does not hold and temporarily store

Bi-direc and a displacement temporary crying J include a two-way switching circuit, which is temporarily stored as (SR, SR3, respectively).

Page 9 1301256 _ Case No. 941〗 0299 Correction 曰

____A V. Invention Description (4) The bidirectional switching circuit Bi-direc operates according to a left and right control signal L/R. The displacement register (represented by SR1 to SR3 in the figure) is connected to the bidirectional switching circuit B i - direc The basic scan shift register unit (represented by BC2 and BC3 in the figure) after the second stage further includes a transfer gate TG and a data line DL, and the transfer gate TG is coupled to the shift register (the figure respectively It is represented by SR1 to SR3), and receives an RGB signal input, and the data line is coupled to the transmission gate TG; the complementary clock signal line HCK/XHCK is coupled to the scanning displacement register unit respectively (the figure is respectively BC1~) BC3 table; g-bit ^ register (indicated by sin~SR3 respectively); horizontal start signal fHST generates a horizontal start signal to the first-level basic scan displacement 暂 :: 与 and another basic scan Displacement register unit (BC2 or sweeping switching circuit Bi_direc; wherein, each level of the basic shift temporary storage 2 (sub-expansion v early (in the figure, respectively, indicated by BC1~BC3)) U// SR1 to SR3 indicate) the output-output signal is shown to it) Λ Λ Λ The memory unit (in the figure, the bc2, (10) table displacement temporary storage ^ and the unit ^ ^ road with '(10) ' at the same time each level of basic scanning power change ~ BC3)) in the two-way cut • Figure BC2 = J respectively Secondary basic scan (4) register unit rr.r - - - ϊί : I! r element BC2' "The private register unit is the second level basic scan shift register; the other one of you mentioned above|丄# circuit Bi-direc can be used to $ ▼ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Page 10 V. Description of the invention (5) Road, including the first, second and third p-type MOS semi-transistor series Si~s3, dianoxy semi-transistor TN1, a second N-type oxy-half The transistor \ a second N-type MOS transistor TN3 and a 〆 inverter INV. The first 〃, 弟一 p-type MOS semi-transistor series s! ~ s3 are formed by two, ί /, P-type MOS semi-transistor connected in series, $ - and the second p Ϊ ί Ϊ The semi-transistor is connected in series, and the first end point P1 of S2 receives the left-side control signal of the left and right control 1 [, the first type of MOS semi-transistor series i receives the right-side control signal r of the left and right control signals, The output signal XHSR1 generated by the displacement register SR1 in the displacement stage of the sheep + electric 串联 body series Si is received. The output signal XHSR1 generated by the displacement register SR1 in the displacement register unit is read, and the 片 筮 丨 , ^ The gate ^ ^ 虱 semi-transistor series group S2 is connected to the starting signal XHST, the third P-type gold-oxygen semi-electric single: 3 common gate terminal is received after the first level of basic scanning displacement. , the register, the resulting output signal is fine, the end point P2 is connected to the two brothers - P-type gold milk semi-transistor series Si~S3 second p-type full oxygen semi-electric 曰 # - insect first gold The oxygen semi-transistor TN1 is connected to the second terminal P2 of the third group VS3, and is connected to the common terminal of the triple-electrode series S3. Φ-弟二N型金氧半雷曰舻9甘,Λ J «The fine point connection, the pole of the 1 crystal ΤΝ1 and the first Μ 氧 氧 半 共 共 共 极端 极端 极端 极端 极端 曰 曰 曰Extremely with the first - Ν Γ丄 一 一 W W W W W W W W W W W , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The total connection of the factory string is connected to the extreme point, the source is DC ink; the inverter INV ' has - input (7) and 1301256 曰 修正案 - Amendment number 94110299 V. Invention description (6) ! Out terminal OUT, the input depends The p-type oxy-half-half-terminal P2 is connected. It is better to be a gentleman. (4) The season is further and 5, the first DC voltage is a vs. electricity, and the inverter INV may include a 1? type gold oxide half P type gold oxide semi-transistor 抒; N type gold oxide half = -N and a first-DC voltage, the gate is connected to the wheel of the inversion surface, the p-type gold oxide half and the 1st electric N: the second pole of the INV is connected to a second direct current M' gate connected to the opposite Phase detector • τ. Preferably, the second DC voltage is an electric shock; the "round" is sent to the first unit BC2 by the initial pulse wave signal XHST, and the bidirectional switching circuit Bi is an inflammatory level basic known displacement register. The circuit B d rec is taken as an example, and the sixth figure is the "唬 waveform of the paste of the invention, the initial pulse wave signal XHST, the first stage of the displacement of the temporary register unit Βπ, and the basic • No. iHSR1 and the third-level basic scan displacement temporary; the unit BC3:: = the output signal generated by the register SR3 discriminates the width of the 3^ wave to become twice as wide, and the output certificate ^ airec its output pulse #元BC 2 will start to produce a cone sweep. ^古弟^; level basic scanning displacement register 5 charge pulse, "~r knows to pass, before - pulse is pulse, then j can be used to precharge" Function, while the latter scans the RGB signal voltage stored to the pixel capacitor. Including the use of a horizontal 妒 _ _ ^ ^ ^ + surface display device, the degree becomes twice the original ^ f ^ and J ^ The output pulse width of the control circuit, and according to the two-way control circuit, the 12th page 1301256 - correction number 941109 (^ five (Invention) (7) The pulse generates a double pulse sweeping pulse wave. The invention can utilize the == mountain road, which can convert the single scan pulse i into 3 = generate double scan pulse wave for pre-charging, and the second 2 double #描脉波, with the first pulse can be entered, this method does not need extra: the wave can be used to drive the correct signal voltage of the pixel voltage, and only the two nights f charge = road block 'do not need The additional construction is simple. It is only possible to add three thin film transistors, and the invention has been disclosed in the preferred embodiment as above, but it is not intended to be used in the present invention, without departing from the invention. Within the scope of the spirit, the scope of protection of the invention is defined by the scope of the appended claims.

1301256 Case No. 941102Qfl Brief Description of the Drawings Fig. 1A to Fig. 1C are schematic views of the embodiment of U.S. Patent No. 5,892,493. & 5 Figure 2A and 2B are schematic views of an embodiment of U.S. Patent No. 6,731,266. $monthly Figure 3A shows a conventional lateral timing scan displacement additive. The structure of the rafter is shown in Fig. 3B as a schematic diagram of the circuit block of the conventional horizontal timing scanning displacement temporary storage crying precharge function. Wood Construction Plus Figure 4 is a schematic illustration of the horizontal time % architecture in accordance with an embodiment of the present invention. Also, the sentence 4 shows the displacement temporary storage. Fig. 5 is a bidirectional switching circuit in the base element according to the embodiment of the present invention. Soil ▼ Trace Displacement Register Figure 6 is a diagram showing the signal waveforms required for the lateral timing structure of the embodiment of the present invention. Description of the main components of the shift register holder] SHI1~BC3 · Complex basic scan bits HCK/XHCK · Complementary clock signal line; HST: horizontal start signal generator; Bi -direc : Bidirectional switching circuit; S R1 ~ SR 3 · · Displacement register; TG: transmission gate; DL: data line; RGB · · RGB signal; Page 14 1301256 _ case number 94110299_ year and month _ correction diagram simple description S1~S3: P-type MOS semi-transistor series; TN1~TN3: N-type MOS semi-transistor; INV: inverter; P1: first end point; P 2 · · second end point; TN: N-type gold oxide semi-transistor; TP: P-type gold oxide semi-transistor; XHSR1: output signal of displacement register SR1; XHSR2 · · output signal generated by displacement register SR2; • XHSR3: displacement register Output signal generated by SR3; IN: input terminal of inverter INV; OUT: output terminal of inverter INV;

Pc: Precharge pulse wave. ❿

Page 15

Claims (1)

1301256 ^—-ΜΜ 941ΐη?.οα6, the scope of application for patents is revised. The drive circuit of the flat panel display has pre-charging function, including: 嗓Drive circuit including register unit, basic for each level The sweeping bit-level basic scanning displacement shift register unit comprises: a bidirectional switching circuit, according to the two displacements, the register is connected to the bidirectional switching circuit; /, the basic scanning displacement register after the first stage The unit further includes a left and right control signal to operate, including the input transmission gate and the data line being lightly connected to the displacement register, and receiving an RGB signal ,·, coupled to the transmission gate; and the complementary %•signal line , sub-displacement temporary = the displacement in the unit to the 2nd level basic interpolation stage and the other-level basic scanning displacement temporary storage crying detection start signal to the first road, ^ the early two of these two-way switching Among them, 'each level of basic f device generates-rounds the signal to the rear of the unit to temporarily shift: the two-way switching circuit, while the displacement register register = the two-way switching circuit is also connected to the soil scanning displacement Arising out of the wheel as a single clip field shift register 2. The scope of patent] ^ Rao. Early and other basic sweeping displacement temporary storage crying and stealing drive power _ ^ early as the second level of the basics] Page 6 1301256 Correction 曰 IS_J4U0299 VI. Patent application scope Scanning shift register unit. The road, wherein the driving circuit for the flat panel display according to the first item of the first aspect includes the two-way cutting of the two gates in the basic stalk displacement register unit and the second person, P f oxy-half The transistor series is formed by connecting a second P-type gold gas-filled gold gas semi-transistor in series, and the first and the left end of the signal to the V-coupling group receive the left and right control and the golden oxygen half. The electric control signal, the first-p-throw displacement temporary crying m _ , "N "the first point of the pole is received before the basic sweep of the second P-type V oxygen half-lei two ^ ^ to the starting signal extreme point to receive the horizontal The second end phase of the crystal series group is connected to the younger brother and the third ρ-type oxy-halide transistor ί / Y 曰 曰 1 body, which is not the same? The total quiescent pole of the type 2 volt-oxide semi-electric stagnation body and the third ρ-type MOS semi-electrode crystal: the common gate terminal connection of the source gate electrode group; a '-p type MOS-oxide semi-transistor series Transistor sheet metal /, + gate electric upper body? , the pole and the second type of gold oxide half 1 pole and the brother-p-type MOS type metal oxide semi-transistor series page 17 1301256 difference number 94110299 six, the patent scope A 曰 repair" group of common gate extreme connection The source is connected to a first direct current and a reversed phase, and has a round of an input end and an output end, and the input end is connected to the second end point of the series of p-type MOS transistors. 4. The driving circuit of the flat panel display according to claim 2, wherein the first direct current voltage is 〆VSS potential. 5 · The driving circuit of the flat panel display as described in the second paragraph of the patent application, wherein the inverter comprises an N-type MOS transistor, the source of which is connected to the first DC galvanic, the gate connection To the input of the inverter, the drain is connected to the output of the inverter; and a P-type MOS transistor, the source of which is connected to a second DC voltage, the gate is connected to the opposite The input of the phase comparator is connected to the output of the inverter. 6. The driving circuit of the flat panel display as described in claim 4, wherein the second direct current voltage is a VDD potential. 7 · A method for driving a flat panel display, comprising: ▲ using a lateral start signal to make a bidirectional control circuit turn the pulse U to about twice as wide; and see the output according to the bidirectional control circuit The pulse produces a double pulse pulse. Review
Schema Revision Page Revision Period: 95/2/10 Λ
BC1 BC2 BC3 1301256
1301256 : _ Case No. 94 Π 0299 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (2) The representative symbol of the representative figure in this case is briefly described: BC1~BC3: complex level basic scan shift register unit; HCK/XHCK: complementary clock signal line; HST: horizontal start signal generator; Bi-direc : bidirectional switching circuit; SR1 ~ SR3: displacement register; TG: transmission gate; DL: data line; _ RGB: RGB signal.
Page 5
TW94110299A 2005-03-31 2005-03-31 Driving circuit and method of flat panel display TWI301256B (en)

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TW94110299A TWI301256B (en) 2005-03-31 2005-03-31 Driving circuit and method of flat panel display

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW94110299A TWI301256B (en) 2005-03-31 2005-03-31 Driving circuit and method of flat panel display
US11/332,922 US7830352B2 (en) 2005-01-14 2006-01-17 Driving circuit for flat panel display which provides a horizontal start signal to first and second shift register cells

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TWI301256B true TWI301256B (en) 2008-09-21

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