TW200901136A - Liquid crystal display, gate driving circuit and driving circuit unit thereof - Google Patents

Abstract

A driving circuit unit of a liquid crystal display fabricated on a glass substrate and outputting a driving signal includes a first transistor, an assistant input unit, and a second transistor. The gate electrode of the first transistor receives an input signal, the first electrode of which electrically couples to a power source, the second electrode of which outputs a first signal. The assistant input unit electrically couples to the second electrode of the first transistor, and receives the first signal and a clock signal to output a second signal. The gate electrode of the second transistor electrically couples to the assistant input unit and receives the second signal, the first electrode of which receives the clock signal, the second electrode of which outputs the driving signal. A liquid crystal display and a gate driving circuit are also disclosed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a driving circuit and a driving circuit unit thereof, and more particularly to a gate driving circuit and a driving circuit unit thereof in a liquid crystal display. [Prior Art]

In a gate driving circuit for a liquid crystal display recently, a gate driving circuit including a plurality of driving circuit units is formed on a glass substrate, and the gate driving signals are sequentially output to the scanning lines by using the driving circuit units. This can replace the use of a general gate drive integrated circuit (IC), thereby saving the expensive cost of using the gate drive ic. Fig. 1 is a schematic view showing a driving circuit unit in a conventional gate driving circuit. In this case, the driving circuit unit of the κ level is taken as an example. After the transistor M1 receives the inter-pole driving signal SNu outputted from the (K-1)-th driving circuit unit, the transistor M1 is turned on, so that the voltage source is The signal is transmitted to the node P through the transistor M1, thereby conducting the transistor M2. Then, when the timing signal CLK is at a high level, the timing signal CLK is again output through the transistor Μ 2 to serve as the idle driving signal s n & This method shortens the rise time of the pole drive signal SNK (s_dme) between the outputs by pulling up the extreme voltage between the crystal ft M2; that is, in the transistor

When M1 is turned on, the voltage of the two-, and 曰曰 of the node p is first pulled, and then when the transistor M2 receives the timing signal CLK, the voltage of the node P is pulled again to accelerate the time when the transistor M2 is turned on. Reduce the rise time of the rounded signal capture. 6 200901136 ^However, the amorphous yttrium (a-Si) used in the fabrication of thin-film transistors has a very low privilege rate, and generally only uses n-type thin germanium transistors as switches to make 'Shaw' After the signal is turned on, the thin-film transistor cannot be turned off immediately. The falling time of the output gate drive signal is too long, and the gate drive signal of the output will be dropped. The pole drive signals overlap in time; that is, the two scan lines are thus broken and driven at the same time, so that the write data may be out of green. O ® this is necessary to propose a kind of driving circuit unit, which can improve the problem that the scanning line is driven at the same time, and avoid data writing errors. SUMMARY OF THE INVENTION The technical aspect of the present invention relates to a driving circuit unit of a liquid crystal display device. The driving circuit unit is fabricated on a glass substrate and used to output a driving number. Stop Sahu* contains a first-transistor, an auxiliary input, a second and a second transistor. The gate terminal of the first transistor receives a round of 仏's ’', the first end of which is electrically coupled to the -voltage source, and the second end of which is used to output a first signal. The auxiliary input unit is electrically reduced from the first transistor = the second terminal, and receives the first signal and a timing signal to output -ί - (4). The gate of the second transistor is electrically connected (4) to the auxiliary input unit and receives the second signal. The direct azole is used to receive the timing signal, and the second end is used to output the driving signal. Another technical aspect of the present invention relates to a gate drive circuit fabricated on a glass substrate and including a plurality of drive circuits for driving a plurality of sweeping cat lines in a liquid crystal display, 200901136 = circuit unit Output the 1-pole drive (four) line separately. Each of the driving circuit units further includes a --electrode body auxiliary input unit and a first electrified body, a younger body. The first transistor is received by the upper-stage driving circuit unit, and the first end is electrically connected to a voltage source, and the second end is a second signal. The auxiliary input unit is electrically connected to the second transistor of the first transistor and receives the 苐-signal and the timing signal to output a second ΠΓ extreme system electrically consuming the auxiliary input unit and receiving the U-terminal receiving The timing signal has a second end for outputting the secret driving signal and transmitting the gate driving signal to the lower-level driving circuit unit. Kind 2: Another technical aspect of Ming Hao is about liquid crystal display. The line driver and a gate = line: several broom lines, - resource - display array, and data line = then = _ intersection and form an image signal to the data line. Close (four), shellfish line and produce plural

U, and contains a plurality of drives (four) tr used for the glass substrate: soap order: do not output - the interpole signal to the corresponding sweep line:! The element also contains a first transistor, - auxiliary input two - The gate driving signal outputted by the driving circuit unit is electrically connected to the voltage source, and the second end is used for outputting the first operation. The auxiliary transmission unit is electrically connected to the second end of the first transistor, and the pure third and the timing signal are outputted to the second signal terminal to electrically steal the auxiliary input unit and receive the second 200901136 end system. The timing signal is received, and the first end thereof is used for outputting the gate driving signal, and the gate driving signal is transmitted to the next-stage driving circuit unit. According to the present invention, the application of the gate drive circuit and the drive circuit unit thereof can control the rise time of the output gate drive signal, thereby avoiding the situation that the two scan lines are simultaneously driven and the written data is incorrect. [Embodiment] Referring to Figure 2, there is shown a schematic view of a liquid crystal display device in accordance with an embodiment of the present invention. The liquid crystal display device 2 includes a plurality of data lines 〜.. dn, a plurality of _ lines G1...Gn, a data line driver, and a gate driving circuit 204. The data line driver 202 is connected to the data line Di.·. 仏' and transmits the complex number of images to the data. The gate driving circuit 2〇4 is fabricated on the glass substrate (not shown) and includes plural numbers. The driving circuit unit 210 is configured to drive the broom lines & (5), and sequentially output the inter-pole driving signals SNi...SNn to the corresponding broom lines. The data line (J 〇1. 鸣 and the broom line Gi...Gn are interleaved to form the display array 220, and the display array 2 2 0 is based on the data line D (the image signal transmitted in the DN and the broom center: GN The closed-pole driving signal transmitted in the middle displays the image. Fig. 3 is a schematic diagram of a driving circuit unit in the green diagram. The actual [·! is based on the driving circuit unit of the K-th order, and the driving circuit The element comprises a transistor, a transistor Q2, and an auxiliary input unit, wherein a' of the transistor Q4Q2 is a (4) gold oxide semiconductor (NMOS) Thunder impurity η upper level in the present embodiment - that is, the first call The gate terminal of the transistor Φ receives the gate drive letter 200901136 number SNK_丨' output by the ''drive circuit unit'. It is not used for extreme poles. The mountain is connected to the voltage source VCC' and its source Connected to the electricity day: the first signal is. The auxiliary input unit is the bird's electrical light source terminal, and receives the first signal L of the first signal Μ Q2 that it is rotating: the number CLK 'by outputting a second signal ss. The gate of crystal Q2 is electrically coupled to Gan, Wenmi, and the help input is 300a, and receives the second. No. S, the 汲 extreme system receives Ο Ο to output _ drive signal called 2:: and its source terminal uses signal S to the next level 2 = line Gk' and one additional, auxiliary input unit 2 (: drive circuit unit And the transistor Q3 is in the real: two = a transistor with a transistor & Q3, the gate is extremely electric, the electricity is the day, the body is the day, the body is receiving the day, the source is extreme, and the source is extreme.

It is the closed end of the CLKL that receives the timing (4) and is used for the rim. ... is coupled to the transistor Q2 transistor 03 Μ '出弟-仏号... In the preferred embodiment, the electrode body Q3 can be a large size channel width to length ratio (W/L). The electric raft body, i.e., it has the intention of referring to Fig. 4, to the dry sound map of the dry field, and to the other driving circuit unit in Fig. 2 . Compared with Figure 3, Pingyi can also contain H Ω4, and the auxiliary wheel units 3_ and Q5 of the example are in the second: Guanghe-Crystal Q5, and the crystal Q4 Q is also in the Benbe example. The extreme electrical uniformity of a N-strainer is connected to the two bodies. The electromorpho 2 and Q5 and the extremes all receive the timing signal, while the source terminal of the electric Q5 is electrically a-Q4 and the output μ: The extremes of Q are used to take the 佗旒-佗旒 SS. In the preferred embodiment, it can be - large size NM0 4 Q4 and still electric day and body and each of different sizes, also 10 200901136 has different Channel width to length ratio (W/L).

(J) The operation of the driving circuit unit will be described below with reference to an embodiment in which the driving circuit unit of Fig. 3 is substantially the same as that of Fig. 4. Fig. 5 is a diagram showing the driving circuit of Fig. 3 == timing chart Referring to FIG. 3 and FIG. 5, when at time u, the gate drive signal si that is rotated by the upper stage (ie, the κ-υ-drive circuit unit is transmitted to the transistor φ, so that the transistor Q1 is turned on. At this time, the voltage source VCC will be output through the source terminal of the transistor Q1, and stored as the first apostrophe FS at the gate terminal of the transistor q3, and the transistor is turned on. Since the transistor Q3 The timing signal received at this time is in the low level state, so the node p is also in the state of low Q2, which is still closed.

When the timing signal CLK == state received by the transistor Q3, the timing signal CLK is output through the source terminal of the transistor Q3 as the second signal ss, and the quasi-state makes the transistor Q2 turn on. At this time, the square is output through the source terminal of the transistor Q2, so as to be able to grasp the charging speed of the electric (4) Q3, that is, by designing the transistor Q3. The large 】^ points the conduction speed of P Q2, which in turn determines the interval between the transistors. The rim time of the handle (when rising, it can be seen from the above embodiment of the present invention that the drive circuit unit can control the output of the pole drive circuit to move the two broom lines in time to cause the data to be incorrect. 13 200901136 Occurs. The invention has been disclosed in the above embodiments. However, it is not intended to limit the general knowledge in the technical field of the present invention, and various changes can be made without departing from the spirit and scope of February. And the retouching, and therefore the quasi--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention: FIG. 3 is a schematic diagram showing a driving circuit unit in FIG. 2. FIG. 4 is a second drawing. Fig. 5 is a timing chart showing the operation of the driving circuit unit in Fig. 3. [... Main element symbol description] 200: Liquid crystal display device 220: Display array 202: Data Line driver 30 0a, 300b: auxiliary input unit 204 : 210 : gate drive circuit drive circuit unit transistor

Claims (1)

200901136 X. Application for Patent Park: 1. The driving circuit unit of the liquid crystal display device is fabricated on a glass substrate for taking out a driving signal. The driving circuit unit comprises: a first transistor, and an ancient ^ ^ , ', has the gate creep, the brother-end and the second end, the gate extreme receives an input practice, #哲虎 the first-Μ is used to receive the voltage signal, the first knowledge is used for the round The first signal; the O o end, the unit 'Electrical_Connected (four) - the second 钿 of the transistor and receives the first signal and a timing and the chord 彳 ° a to output the second signal; Second power =:= a body having a gate terminal, a first end, and a second end, wherein the second circuit is electrically connected to the auxiliary input unit and receives the first end of the body transistor to receive the timing signal The second end of the electric body of the brother is used to rotate the driving signal. 2. The scope of the patent application is as follows: The auxiliary input unit comprises: the driving circuit unit described in the item, wherein: the electric cymbal: two transistors, having the idle end, the first end and the second end, the cough-electric body The gate of the gate is electrically connected to the second electrode of the first transistor, and the second transistor is electrically coupled to the second transistor. The _ electric day 曰筱 this second signal. Brother-transistor gate extreme and used for output 3. As claimed in the second paragraph of the patent application, the first electric 9_ bucket externally described drive circuit unit, 苴_ transistor, the second electro-crystal I# π /, r the second transistor is an N-type gold 13 200901136 oxygen semiconductor os) transistor, and the first transistor, the first end of the third transistor is a 汲 extreme, the first The second transistor of the second transistor and the third transistor is a source. The first end, the first end, the driving circuit unit according to claim 1, wherein the auxiliary input unit comprises: a fourth transistor having a gate terminal, a first end and a second end The gate of the four transistors is electrically coupled to the second end of the second transistor, the first end of the fourth transistor receives the timing signal; and the first to fifth transistors have an extreme, first And the second end of the fifth transistor is electrically coupled to the second end of the second transistor of the first transistor to receive the timing signal; The second end and the second transistor are electrically connected to the second transistor and the signal. j position 鳊, and is used to output the second Ο ^ 曰 曰 曰 曰 曰 曰 曰 曰 曰 曰 曰 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动 驱动a crystal, and the first:: the fourth electric body and the fourth electric crystal of the fourth transistor and the present; the Panyu μ 1 crystal, the second transistor, the first electron -:, the first end of the crystal The 为 汲 , , , , 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四Hedian Electric Co., Ltd. 6. The gate drive circuit is fabricated on a glass substrate and includes 14 200901136 2 drive circuit units for driving multiple layers in the liquid crystal display. =晦, and the drive circuits The unit sequentially rotates one of the plurality of broom lines corresponding to a pole drive letter (4), wherein each of the zones is movable - including: the second - transistor 'has a closed extreme, a first end and a second end, The system receives the gate drive outputted by the upper-level driving circuit unit of the driving circuit unit, and the terminal is used to receive the voltage signal, and the second end is used to receive the voltage signal. The second input signal is used to output the first signal; the auxiliary input unit is electrically connected to the second of the first transistor, and receives the first signal and a timing signal to output the second signal; 'Having a gate terminal, a first terminal and a second terminal, the first gate terminal is electrically connected to the auxiliary input unit and receives the second: the first end of the !2 transistor receives the timing Signal, the body, the second end is used to output the gate drive Signal, and the driving circuit unit transmits the G ° / to an actuation signal. The auxiliary drive circuit of the sixth item mentioned in the sixth paragraph, wherein the three electric 曰 ^ three transistors have an extreme pole, a first end and a second end, the third third spur, the spur extreme is electrically coupled Connected to the second end of the first transistor, the first end of the second crystal receives the timing signal, and the second transistor is electrically connected to the closed end of the second transistor and used for Output 15 200901136 The oxygen body and the third transistor are N plastic gold = body (: M 〇 S) transistors, and the first transistor, the second transistor, the first crystal The r end is - not extreme, the first transistor, the sun body and the second end of the third transistor are - source terminals. Ο ϋ 9 · If you apply for a patent plan, the auxiliary input unit further includes the gate drive circuit described in the item, wherein the first end, the first end, the fourth power has an idle extreme, the first end and the second end four electric days The extreme between the body is the first end of the fourth transistor: the first transistor of the younger brother receives the timing signal; and the fifth and second transistors have the extreme, the first end and the second The terminal end electrical system is configured to receive the timing signal at a first end of the second body connected to the first transistor, and the power is lightly connected to the second end signal of the second transistor and the fifth transistor. Λ 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电 电a second transistor, the fourth transistor, and the fifth body, and the first transistor, the second transistor, and the first end of the fifth transistor, The first ray, the second transistor, the fourth transistor, and the first transistor of the 16 200901136 fifth transistor are a source terminal. H. A liquid crystal display device comprising: a plurality of data lines; a plurality of scan lines, a data line driver signal to the data lines; and the data lines are formed to form a display array; and the data lines are coupled Generate multiple images and The inter-electrode driving circuit is formed on a glass substrate and includes a plurality of driving circuit units for driving the potassium dichloride field green and the driving circuits are single-sequentially outputting one-pole driving signals to corresponding scans One of the twisted wires, wherein each of the driving circuit units includes a first transistor between the first and the second transistors, and receives the idle electrode outputted by the upper-level (four) circuit units of the driving circuit units The driving signal 'the first end of the first transistor is electrically connected to the voltage source, and the second end of the first transistor is used for outputting - An auxiliary input unit is electrically coupled to the first end of the first transistor, and receives the _th signal and the “timing signal to output two signals; and a second transistor, the gate of the second transistor Electrically coupled to the auxiliary input unit and receiving the second signal, the second transistor receives the timing signal, and the second end of the second transistor is configured to output the gate driving signal. And transmitting the gate driving signal to the lower-level driving circuit unit in the driving circuit units. 17 Ο 第 the first timing signal of the first transistor; and a fifth transistor, the first timing signal of the first transistor; ', medium. The second end of the fourth transistor and the second of the fifth transistor are electrically coupled to the gate terminal of the second transistor, and are used to output the 200901136 12. The auxiliary input unit is as claimed in the patent scope. The method includes: replacing the liquid sputum display device, the second transistor of the xylophone, and the first: the first phase of the first transistor - the body is electrically coupled to the timing signal, and the second electrical 曰曰The younger brother-end receives the gate extreme of the crystal and uses to rotate the second signal. The liquid crystal display device of the second aspect, wherein the nmos transistor, and the transistor and the third transistor are both a first end of the transistor = a crystal, the second transistor, and the The third crystal and the first: electric body: the first end of the first transistor, the second end of the second body is a source terminal. In the middle section, the liquid crystal display device according to the eleventh patent scope is applied, wherein the auxiliary input unit comprises: a fourth electric aa body, wherein the gate electrode of the fourth transistor is electrically connected to the end, and the fourth transistor The first end receives the gate of the fifth transistor electrically coupled to the end, and the first end of the fifth transistor receives the 18 200901136 two signal. 15. The liquid crystal display device of claim 4, wherein the transistor, the second transistor, the fourth transistor, and the fifth transistor are NMOS transistors, and The first end of the first transistor, the second transistor, the fourth transistor, and the fifth transistor are a terminal, the first transistor, the second transistor, and the fourth transistor And the second end of the fifth transistor is a source terminal. -〇 19