TW201037673A - Display and gamma correction circuit thereof - Google Patents

Abstract

A display and a gamma correction circuit thereof are provided. The gamma correction circuit which is suitable for disposing on a printed wire board includes a plurality of the first voltage divider units. The first voltage divider units are connected in series between a first reference voltage and a second reference voltage. Each of the first voltage divider units includes a first reference resistance and a first impedance adjustment device electrically connected to the first reference resistance. The first impedance adjustment device is used for adjusting an equivalent impedance of the first voltage divider units. At least one first impedance adjustment device is a first adjustment resistance, and the other first impedance adjustment devices are first conducting lines respectively.

Description

201037673 u«iui〇uuW30322twf.doc/n VI. Description of the Invention: [Technical Field of the Invention] In particular, the invention relates to a gamma adjustment circuit for a display and display. [Prior Art]

The robbery of the second: the evolution of semiconductor technology 'so led to the display of the display L display, liquid crystal display aiquidCfystai Qiulay, LCD) has been widely used recently, ^, (〇ath〇deRayTube, CRT) flow ° The driving method that the liquid is inconvenient is to control the rotation test of the liquid crystal by changing the electric strength at both ends of the liquid crystal layer, thereby changing the polarization direction of the light. Both ends of the liquid helium layer are electrically connected to the halogen voltage and the common voltage. According to the application: the direction of the liquid layer, the driving method of the liquid crystal display can be divided into a positive driving and a negative driving. When the voltage of the halogen is higher than the voltage, it is called positive polarity driving, and vice versa, when the voltage of the halogen is lower than the negative polarity.曰 When the same voltage difference is applied to both ends of the liquid crystal layer but different electric field directions are applied, the transmittance of the liquid is not affected. However, if the direction of the electric field applied to the liquid crystal layer is always positive or negative, the liquid crystal quality will be deteriorated for a long time and cannot be smoothly rotated in response to the electric field change. This phenomenon is called liquid crystal. In order to avoid the phenomenon of liquid crystal polarization, it is necessary to alternately use voltages of different polarities to drive the liquid crystal at different times, that is, to drive by "polarity reverse 201037673 usiuibuu w ^0322twf.doc/n". Fig. 1A1 shows a partial top view of a conventional liquid crystal display. Referring to FIG. 1A, the liquid crystal display 100 includes a gamma circuit 12A, a crystal display panel 130, and a driving element, wherein the driving element 14 composed of the source circuit 141 and the gate driving circuit 142 is: Between the trace circuit 12G and the display panel (10). The liquid celestial day _ plate 130 includes a plurality of parallel data lines 131a, u ratio, 夂 夂 = parallel scan lines m, m, ... and the intersection of each other = 3la: 31b, ...and the scan line 132, 134, ... define the source area 130a, 130b, the source drive unit H in the basin ~ m妗 :== 141; a; and; == sexual connection source The source driving unit 141b, J 132, m, ... electrically connected to the gate driving circuit 142 in the pole driving circuit 141 = output gamma reference voltage U source driving circuit hummer = source driving circuit 141 provides liquid crystal display The information required for the panel m is the driving waveform diagram of the liquid crystal display panel according to the figure. In the second, v G is the scanning signal provided by the gate driving circuit 142, and the signals are transmitted by the A and B in the A and B. d is the data voltage on the bellows lines 131a, 131b, and v is the pixel voltage in the pixel regions 130a, 130b. PAi PB1^ Please refer to FIG. 1A and FIG. 1B at the same time, the frame is positive polarity driving, and the second frame time is 2; 曰曰.,,, and member 100 are negative polarity driving. Among them, in the frame time τ 神的201037673... wo ινιυν/i. iW 30322twf.doc/n tl and in the frame pg 142 provides scanning signal 日, day broadcast = time t2, gate drive circuit The source driving unit 141==32' and the source driving circuit (4) the material lines Bla, 131b, . (10) Provide data voltage % to capital respectively

The waveform of the scanning signal on St should be missing ν, 沾, and + 1 delay effect (Rcdelay) will cause scanning: Lu:: shape loss, ,. Assume that it is closer to the gate driving circuit 142

v, the waveform of the domain 13Ga smear signal v, ga is different from the scanning signal G, "4 mesh same" and the B at the far end of the idle driving circuit 142 = (10) (four) shape has been distorted to be different from the sweep signal v, g Very large scans At the end of time t1 and _t2, the pixel voltages in the doping domains 13Qa, i3〇b are low as the scanning signals v, ga, v, gb switch from the high level to the low level. In the data, this phenomenon is called the feed-through effect. The difference between the voltage of the pixel and the data voltage vD is called the feed-through voltage. However, A. The scanning signals V, ga, v, and gb at the two locations are not the same. Therefore, the feedthrough voltage of the halogen region 13〇a is naturally not equal to the feedthrough voltage A VFTB of the halogen region 13〇b. In the halogen region 130a, the common voltage should be set to the intermediate value Vc() mA of the pixel voltage VPA+ and the pixel voltage 乂^- to ensure the display quality of the pixel region 130a at a. However, the pixel region 13 is In the case of 〇b, the common voltage is set to the intermediate value VcomB of the pixel voltage VpB+ and the pixel voltage VpB_ to ensure the pixel region 13 at b.显示b's display product 5 201037673 08I01601TW 3〇322twf.doc/n. It can be seen that regardless of the shared mosquito, it is impossible to match each pixel area 13 in the frequency panel 130, service, ... This will cause the display to occur _ (flieke〇. In addition, when the size of the liquid display panel 130 is larger, the electric_容延纽 should be more serious, which makes the problem of flicker more difficult to solve. Contents], the invention provides a kind of gamma adjustment circuit, which is applied to the display, and the flicker phenomenon of the display surface of the σ display device. The invention provides a display with a flicker phenomenon that can be modified. a circuit, wherein the gamma adjustment circuit is adapted to the circuit board of the unit 1. The gamma adjustment circuit includes a plurality of first-to-the-mox pressure dividing units connected in series with the n reference voltage and the first one-dividing unit includes; Sexual connection: ί:; anti-adjustment component, wherein the first-impedance adjusts the impedance voltage; the equivalent of the element, and at least one of the components is a wire adjustment resistor, and the remaining first-impedance adjusts the display Including the aforementioned gamma The second and the driving element gamma adjusting circuit are adapted to be connected to the display surface: the circuit board, and the driving element is in the display of the present invention:: vulgar - in the embodiment, every 201037673 uoiuiouiiW 30322twf.doc /n - the first-division element partial pressure - reference · ^ should be output - the first - gamma reference voltage. In, test = 矣 to adjust the resistance of at least - the first partial pressure unit: two = two:: one The node of the reference generates - the first - gamma;;; in the display of the present invention and the gamma adjustment and rectification circuit further includes (d) the second sub-real 16 case, the gamma is concatenated in the aforementioned first-minute The second unit of the pressure unit is firm.) Each of the second partial pressure units includes H: the test is hidden between. The second impedance adjusting component uses == to connect the second test electric equivalent impedance, and at least the current resistance of the first voltage unit, and the remaining second impedance, 21: the adjusting component is a second tuning The display of the invention and the gamma S3 are the second conductor. A second voltage dividing unit divides the first reference emperor circuit, and in one embodiment, each of the second gamma reference cells is output. And the first reference voltage is in the at least-second division of the light resistance: in the embodiment, the node between the second 〇1 reference resistor is generated: = 'second adjustment resistance and the gamma of the present invention The first gamma adjustment voltage is adjusted. The unit further includes - in the iC embodiment, the first stabilizing capacitor is electrically connected to the first gamma reference voltage and is connected between the gamma pressures of the present invention. In addition, in the second stable embodiment, each-second tap is connected to the second gamma reference voltage 'one: the second stable, the voltage-capacitor is electrically connected between the gamma of the present invention|adjustment', steam In the case of the court, the printed circuit board 7 201037673 0810160ITW 30322twf.doc/n is adapted to electrically connect a source driving unit, and the source driving unit receives the first gamma reference voltage, at least a first gamma adjusting voltage, The second gamma spring voltage and at least one second gamma adjustment voltage. In an embodiment of the display of the present invention, the driving component includes a source driving unit, wherein the source driving unit receives the first gamma reference voltage ^ at least one gamma adjustment voltage, the second gamma reference voltage, and at least – Second gamma adjustment voltage. In an embodiment of the display and gamma adjustment circuit of the present invention, the first reference voltage is the system voltage and the second reference voltage is the ground voltage. Based on the above-described display of the present invention, the gamma adjustment circuit of the present invention is purely provided, and the gamma gamma circuit contributes to the improvement of the flickering phenomenon of the display panel, thereby improving the display quality of the display. The above described features and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] and the prior art shown in FIG. 1B, the liquid crystal display 2 in the process of transmitting the scanning signal, the different bits t ttt13Ga, 13Gb will be subjected to the resistance-capacitor delay effect (rc 7 η thus having unequal value feedthrough) Voltage (feed_thr〇ugh

He domain: fFTB ’ makes the total (four) 丽 u method conform to B = 佥 shared voltage can not meet the A pixel area a, and then the flashing phenomenon occurs. : ', , and text; ^ The above problem, this implementation follows the voltage division unit in the light gamma adjustment circuit W 30322twf.doc/n 201037673 (to be described later) to part of the source drive circuit, = adjust the ink ( After the capacity of the detailed data supply voltage, into the tb 1 ^ some source drive circuit in the region of the book I electric ^ such as the source drive circuit electrically connected to the area of the halogen region _, and the voltage can be Approximate to each oo equivalent = the local part of the gamma adjustment circuit of this embodiment is suitable for being arranged in -2; L2, the gamma adjustment circuit of the sequence · 21〇b, with m partial voltage units 210a, . · · · 夕 / knife unit 22 〇 a, 220b, 懕罝 - 210a, 21 〇 b, iu » eight r- knife pressure early ... and the pressure dividing units 220a, 220b, ... in series箆 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考Between the two reference voltages Vr£F2.. In the present embodiment, the first reference voltage ^ muscle and the second reference battery ref2 are, for example, different system power and ground voltage, and the voltage dividing unit 2 Ϊ́〇 &, = =, ·.. and the voltage dividing unit 2, 220b, ... will jointly divide the first reference private basket vreFi and the second reference voltage Vref2 to further correspond to the output -, the horse reference voltage ^ Lake 'where i is an integer greater than or equal to 1. That is, the 'dividing unit 21〇a, 21〇b, ... and 220a, 220b, ... are connected in series with the second reference voltage Vref2, Vrefi The voltage dividing point between two adjacent voltage dividing units respectively provides a gamma reference voltage VGAMi. In this embodiment, i is, for example, a positive integer of 14 to 14, that is, the gamma multi-test voltage of the embodiment It is Vgami~VGAMM. However, the present invention is not limited to 9 201037673 0810160ITW 30322twf.doc/n and the number of (4) shirt voltage vGAMi should be determined according to the actual product. In order to maintain the per-gamma reference voltage The value of Vm can be further stepped on the voltage dividing unit 21Ga, the hiring, ... and the voltage dividing unit, 220b, ... towel & set voltage regulator capacitor Cr, the towel capacitor is connected to the gamma reference voltage VGAMi (for example, V (jami, V6am2, .. connected and the second reference voltage VREF2. GAM14) ^ S ^, the secret of the riding device towel _ circuit Sexual connection to the display (four) board sighs Wei's gamma turn the whole circuit 200 door ^ gamma tone (four) road read for gamma reference (enough to show the panel (four) (four) voltage. In addition, the real _ 3 = a 21Gb,. .. can provide the horse reference voltage GAMl required for positive polarity driving, such as VGAM1~VGAM7), and the voltage dividing unit 22 plus, u〇b, soil can provide negative polarity (four) Ma reference voltage ... ~ vGAM14). Continued Chuanru VGAM8 In this real supplement, each----------------------

The i.J reference resistor is erroneously and with reference resistor 2 blocking 1 component 2M' and each-dividing unit 22 one, . 2) and an impedance adjusting component electrically connected to the reference 222, J:, in addition, in the present embodiment, the impedance adjusting component is called at least two to four (four) resistors, and the remaining impedance adjusting components 214 are equally divided. At least the resistance of the ground impedance adjusting component 224, and the remaining impedance adjusting components 224 are respectively -

O o 201037673 .........IW 30322twf.doc/n For example, as shown in FIG. 2, the impedance adjustment = 214 in the voltage dividing unit 2i 〇 b is, for example, an adjustment resistor 214 feet, and a voltage dividing unit The impedance adjustment element 224 in 22% is, for example, the adjustment resistor 224R, while the other impedance adjustment elements 214, 224 are, for example, wires 214W, 224W, respectively. In the present embodiment, the impedance adjusting component 214 is mainly used to adjust the equivalent impedance of the voltage dividing unit (4), the employee, ... where the bean is located, and the impedance is adjusted, and the 224 is mainly used to adjust the voltage dividing unit 22Ga where it is located. , 220b, ..., f ^ impedance specific and S, in the case that the impedance adjusting element 214 is the pressing unit 210a of the wire 214W, the equivalent impedance value of the voltage dividing unit 21〇a is substantially the impedance of the reference resistance value. On the other hand, the Jingyou impedance adjusting component Η is the adjusting unit 2MR of the adjusting resistor 2MR, and the voltage-dividing unit hired = the effective impedance can be regarded as the impedance of both the reference resistance and the adjustment resistor. Similarly, the equivalent impedance value applied by the voltage dividing unit can substantially be the impedance value of 222, and the equivalent impedance of the voltage dividing unit 2, the resistance 222 and the adjusting resistor 224R jointly produce a resistance. Eight; the partial pressure unit 21% towel, the touch resistance can also be generated by the voltage Vrefi and the second reference voltage V coffee, the node between the step-gamma adjustment and the reference resistance 212 can generate '', 〆 垄VGAM-CI. Similarly, the node between the voltage dividing unit 22〇b integral resistance 224R and the gamma light voltage t(four) resistor 222 can also generate another embodiment, for example, the adjustment resistor is placed in the knife pressure early element. In 21Gb and 22Gb, the gamma adjustment voltage v_^1 y GANl C2 0 is provided so that the voltage dividing unit 11 201037673 0810160ITW 30322twf.doc/n 兀 210b, 220b. However, the present invention does not take this test. For example, the adjustment resistors can also be configured in another or other plurality of voltage divider units to provide a gamma adjustment voltage for the divider unit or other plurality of voltage divider units. In particular, when the gamma adjustment circuit 2 of the embodiment is applied to the display, the gamma adjustment voltages VGAM_C1 and VGAM_C2 rotated by the gamma adjustment circuit 200 can be transmitted through the source driving circuit. Adjust the display data = the required data voltage of the board, and then the phenomenon of flickering on the display surface is improved. The wiper vGAM C1 and vGAM C2 are positive and negative polarity drive gamma adjustment voltages. In the following implementation, the general structure of the display of the gamma adjustment circuit 200 of the present embodiment will be first described, and how the gamma adjustment circuit 200 improves the flashing phenomenon of the display surface. Figure 3 is a partial elevational view of a display of one embodiment of the present invention. Referring to FIG. 3, the display 5 of the present embodiment includes a gamma=full circuit 200, a display panel 300, and a driving element 4A. The 'medium gamma adjustment circuit 200 is adapted to be disposed on a printed circuit board (not shown) electrically connected to the driving element 4, and the driving element 4 is electrically connected to the gamma adjustment circuit 200 and the display Between the panels 300, and the display panel is a liquid crystal display panel. On the other hand, the driving element 400 of the present embodiment includes a source driving circuit 410 and a gate driving circuit 420, and is electrically connected to the above-described printed wiring board. Further, the source driving circuit 41 of the present embodiment is electrically connected to the printed wiring board and electrically connected to the gamma adjusting circuit 200 disposed on the printed wiring board. Of course, the display 5 of the present embodiment is also included in the package. 201037673 fW 30322twf.doc/n contains other components (eGmp. Brain t). Taking a transmissive liquid crystal display or a transflective semi-reflective display as an example, the display device 500 can further set the backlight module (not shown in green). In short, item 3 is only for the related components, and will be described in the following embodiments. In this embodiment, the display panel 3A includes a plurality of data lines 31〇a, 3l〇b, . . . , which are parallel to each other, and a plurality of scanning lines 322, 324, ... which are parallel to each other. The regions 33Ga, 33Gb, wherein the data lines, o the scan lines 322, 324, ... intersect each other and define the cells & fields 33〇a, 33〇b, .. In addition, the data line, the 鸠, ... are electrically connected to the source drive circuit, and the scan line 322 is the gate drive circuit. The source driving circuit 410 of the present embodiment is constituted by, for example, (4) 1 ?, 41%, ... of the source. More specifically, the source driving unit 41a 电 a electrically connected to the reference voltage v_ and the gamma adjustment voltage VG : V gamma-polar drive = required data voltage; in addition, the source voltage v of the embodiment The % is connected to the lean material, line 310b, and receives the data voltage required by the gamma to reference 31% of the data region of the data. However, its addition = and source drive single (four) configuration _ and so on, here is not VG case L „ according to the drive waveform diagram of the panel in Figure 3, straight in v0A; v: v to, VDB for example ^ The scanning signals transmitted by the two places B, plus, for example, the data voltages on the data lines 310a, 310b, respectively, 13 201037673 OS10160JTW 30322twf.doc/n

Vpa2 and VPB2 are, for example, the pixel voltages of the halogen regions 33〇a and 33〇bR, respectively. In this implementation, the display is driven by the positive polarity in the frame time τ+, and the negative time is driven in the (four) frame time. In detail, the circuit (4) in the frame = between 1+ provides the scan signal G to the scan line 322 in the display panel 3, wherein the scan signal % transmission = the waveform when the pixel region is on, for example It is the same as the scan signal %, the life is A, VGA" but the waveform when it is transmitted to the pixel area 3 of B: the resistance valley delay effect is really different from the scan minus %.

= signal VGB. Similarly, during the time 图 in the frame time, the circuit 420 # provides the scanning signal % to the scanning line 322, wherein the scanning signal waveform of the pixel region in the transmission A is, for example, i, but the pixel at B _ 33% of the sweep (four) wave side if the scan signal I VGB 〇 eight, changed the f A pixel region 33Ga and B at the pixel region 33 〇 b 5 = 1 scan signal VGA_ plug signal I g feedthrough effect of the same degree, the percentage of the halogen region in this embodiment

, 33" Do not receive unequal data voltage vDA and data 怠:: good _ phenomenon. However 'is through, hire to provide gamma reference voltage 〃 _ and gamma adjustment "vH, _JrM: G2 to make the source _ move The unit steals the output data voltage, and the gamma is provided by the gamma adjustment circuit 2°G.

To *mGAMiU 〇 original drive unit miscellaneous output data voltage vdb 'pixel area 330b. DB is worth noting that the gamma adjusts the shape of the electric castle ν_—〇, v_—a 14

At the end of time 11, the data voltage VDA is scanned by the signal VGj. (4) The scale is set (4) and the money is pressed. Vp: 'The poor material voltage Vdb is also affected by the high-frequency shift of the VGB from the high level to the low level. And let Susie Lai fall to U, when the door t ends, 'the data voltage vDA is scanned by the Vga from the high level ^201037673 υδΐυιουιι W30322twf.doc/n is by adjusting the gamma adjustment circuit 2〇〇 partial pressure The equivalent impedance of the cells 21〇b, 22〇b, wherein the gamma adjustment voltages VGAM_C1, vGAm can effectively improve the flicker phenomenon of a certain grayscale tone of the display pupil. However, the invention does not limit the gamma. The adjustment voltages Vgam_ci and VGAM_C2 are generated by the voltage dividing units 210b and 220b, and the designer can adjust the equivalent of the voltage dividing unit according to the requirements of the product (for example, the southernmost, the lowest grayscale tone or the intermediate grayscale tone). The method of adjusting the equivalent impedance in this embodiment is to set the corresponding impedance adjusting component as the adjusting resistor. Taking the prior art disclosed in FIG. 1 as an example, the feeding of the pixel regions 130a and 130b at two places A and B The pass voltage is νντΑ ' ΔνρτΒ. In the present embodiment, the data voltages Vda and Vdb are supplied based on the feed voltages Αγρα and ΔvFTB of the two unequal values, for example, to improve the flash phenomenon of the display surface. The pixel region 330a at A receives the data voltage VDA on the data line 31〇a, and the pixel region 33〇b at the B receives the data voltage vDB on the data line 31%, wherein the data voltage Vda (four) voltage value is, for example, greater than the data voltage VDB. The voltage value, and the voltage difference between the voltage value of the data voltage ν〇Α and the voltage value of the data voltage VDB is substantially equal to the difference |AVfta_AVftb丨 of the feedthrough voltage feedthrough voltage ΔνΡΤΒ. /, 15 201037673 0810160ITW 30322twf.doc The effect of /n low level causes the pixel voltage to drop to Vp-, and the data voltage Vdb also doubles to the influence of the scan signal VGB switching from the high level to the low level and the voltage drops to VP-. In the frame time τ+, the 昼^ region = has the same value of the pixel voltage Vp+ as 330b; and in the frame time, the halogen regions 330a and 330b also have the equivalent pixel voltage ν1. Thus, after the end of time t, the alizarin The region 33〇a and the pixel region, 330b are respectively subjected to different feedthrough effects and thus have the same feedthrough voltage AVfta and the feedthrough voltage, but the halogen regions 33 and 33〇b have the same pixel voltage Vp+. By the same token, after the end of time h, the halogen regions 330a, 330b also have the same pixel voltage Vp-. Thus, the common voltage of this embodiment can be set at the pixel voltage and the pixel voltage VP- The intermediate value of VCDm. P+ It can be seen from the above that the gamma adjustment circuit is used to provide the gamma n-cycles vGAM C1, vGAM C2 to the source driver unit but not to the source driver unit 41〇b to adjust the pixel region. The data voltage vDA* received by 31〇a causes the difference between the voltages ΔVfta and Δ% to be obtained, and thus the common voltage Vc〇m can substantially conform to all the check regions 310a, 310b, . Traditionally, the gamma adjustment circuit can only provide the gamma reference voltage', so that the material of the 昼 昼 region can not be supplemented, and thus the display surface flickers. It should be noted that the above embodiment is a gamma adjustment circuit that provides a gamma adjustment voltage Vgam ci, ν_Α to the source driving unit 410a that is connected to the halogen region a, but is not provided to the pixel region 16 201037673 081016011W 30322twf.doc/n The source drive unit 41〇b of the field 330b is electrically connected, and the method is as follows: the data voltage is applied to the pixel area 3 without changing the data voltage Vdb of the pixel area 33Gb. Vda increases the chirp, and thus the halogen regions 330a, 330b have the same pixel voltages Vp+, Vp_. However, in other embodiments, the gamma adjustment circuit 200 may also provide the gamma adjustment voltages vGAM C1, Vgam-ci to the source drive unit side that is electrically connected to the halogen region 3, but not to the pixel. The source drive unit 4i〇a of the region is electrically connected to reduce the data voltage v of the pixel region 33〇b by 资料ΔVfta-AVfTM without changing the data voltage vDA❺ of the pixel region 33〇& Further, the halogen regions 330a, 330b have the same pixel voltages VP+, νΡ-. In a broad sense, when the resistance-capacitance effect in the display panel period is very =¥' can be fixed at the material voltage of the halogen region, and then calculate the difference between the feedthrough voltage of the region and the feedthrough voltage of other halogen regions. value. If the value is exceeded, the data of the other halogen regions will be supplemented, and the common voltage of all the pixel regions in the panel 300 will be substantially the same, thereby improving the flickering of the display surface. The gamma adjustment circuit of the present invention is applied to the material of the present invention. The severe display area can also utilize the code adjustment circuit to achieve a substantial improvement. Overall: =; = _ Good display quality.叩°明明的显器 has a good hair second hair 201037673 0810160ITW 30322twf.doc/n Within the spirit and scope of the present invention, when some changes and refinements can be made, the scope of protection of the present invention is attached to the patent application. The scope is defined. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a partial top plan view of a conventional liquid crystal display. Fig. 1B is a driving waveform diagram of the liquid crystal display panel according to 1A of the drawing. 2 is a partial equivalent circuit diagram of a gamma adjustment circuit according to an embodiment of the present invention. Figure 3 is a partial elevational view of a display in accordance with one embodiment of the present invention. Fig. 4 is a view showing driving waveforms of a display panel according to an embodiment of the present invention. [Description of main component symbols] 100. Liquid crystal display 13 0 · Liquid crystal display panel 130a, 130b: Alizarin regions 131a, 131b: Data lines 132, 134: Scanning line 140: Driving element 141: Source driving circuit 142: Gate driving circuit 200: gamma adjusting circuit 210a, 210b, 220a, 220b: voltage dividing unit 18 201037673 ^ UO JLVJ iLiV/l 丄W 30322twf.doc/n 212, 222: reference resistance 214, 224: impedance adjusting element 214R 224R: adjustment resistors 214W, 224W: wire 300: display panels 310a, 310b · data lines 322, 324: scan lines 330a, 330b: halogen region 〇 400: drive element 410: source drive circuit 420: gate drive Circuit 500: Display CR: Voltage stabilizing capacitor h, t2: Time T+, T_: Frame time VcomA 'VcomB: Common voltage VDA, VDB, V'D: Data voltage AVfta, AVFTB: Feedthrough voltage

Vg, V (3A, Vqb, V'G, V'GA, V'GB: scan signal . VgAMI ~ VgaM14 ' VGAMi : gamma reference voltage V〇AM_Cl ' V〇AM_C2 : gamma adjustment voltage

VpAl ' VpBl ' VPA2 ' VPB2 ' Vp+ ' Vp- : halogen voltage VpA+, VPA — , VpB+, Vpb− · halogen voltage Vrefi : first reference voltage VREF2 : second reference voltage 19

Claims (1)

201037673 0810160ITW 30322twf.doc/n VII. Patent application: 1. A gamma adjustment circuit suitable for the gamma adjustment circuit, comprising: 罝 on a printed circuit board, a plurality of first voltage dividing units, connected in series Between the reference voltages, each of the first test voltages and the first-first reference resistances; and the early 70s are included: the first impedance adjusting component, the life resistance, to adjust the first-side connection The first-shensi electric power, in which the first-impedance adjusts the effective impedance, adjusts the resistance, and the rest of the t-th is - the -th line. The anti-adjustment components are respectively a first guide. 2. For example, the first-divided-pressure unit sub-matrix adjustment circuit, wherein the corresponding round-to-gamma reference and the second reference are pressed The electric field includes a gamma adjustment circuit according to item 2, an adjustment resistor in the basin, and the first reference voltage squeezing pressure, the gamma adjustment voltage. The node between the electricity and the first gamma is generated. 4. For example, the third patent of the patent scope and the +, the printed circuit board is suitable for the gamma circuit of the electrical connection item, wherein 20 201037673 081U160 Π W 30322twf. Doc/n - an "the first" voltage and the second reference voltage ^ is electrically connected to the first - gamma reference power repeatedly. 6. The scope of the patent application includes: the gamma adjustment circuit described in the item, more Between the second reference voltage and the second reference voltage, each of the secret-feeding unit and the second reference==-turning unit includes: O 〇 resistance, using (10) pieces; _ electrically connecting the second reference In the electric circuit, the equivalent impedance of the second resistors 71 adjusts the resistance, and the rest of the at least ten is a second line. The 弟- 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬 杬The electric slow response corresponds to the output - the second two gamma reference voltage. In the gamma adjustment circuit described in item 7 of the spoon garden, wherein the sin =:, the money_at least the second voltage dividing unit, the gamma adjusts the voltage. The node between the first reference resistor generates a gamma adjustment circuit according to the second gamma range, wherein two _p, \^ are electrically connected to a source driving unit, and the source is driven The second reference voltage and the whole voltage. 0. The pseudo-mouth adjustment circuit according to claim 7, wherein 21 201037673 0810160ITW 30322twf.doc/n each of the second voltage dividing unit further comprises: a second stable capacitor, the electric_and the Between the second reference voltages. The voltage of a gamma ginseng temple is as follows: 11. The gamma tone of the patent range is as follows: the reference voltage is the system power & type, the display includes: ^ 4 is the grounded ink. - gamma adjustment circuit, suitable for 1 mA adjustment circuit includes: on the circuit board, the gamma plurality of first voltage division units, connected in series - the second reference voltage of the gate reference voltage and / can be - Between each of the - the first - the first - the first reference resistance, and the H - the first impedance adjusting component, electrically connected to the 兮筮A1 resistor, used to adjust the position of the 忒 忒 苓 苓 苓 ... ... ... Some first impedance adjusting components, Qiudi-adjusting resistors, the remaining two of them are --wires; one brother_several five weeks, the whole two pieces are respectively - the second one is electrically connected to the printed circuit board; and the gamma The driving component of the adjusting circuit is electrically connected to the display panel and w I3. For example, the pressing unit according to the Uth aspect of the patent scope divides the first reference voltage and the first: the corresponding output of the first: The reference voltage β Λ is - the reference voltage is the display boundary described in the thirteenth patent range, the first half of the material is an adjustment resistor of the at least - first-dividing unit; 22 201037673 uoiuiouiiW 30322twf.doc/n The entire resistance and the node between the first reference resistor A first gamma adjustment voltage is generated. 15. The display of claim 14, wherein the driving component comprises a source driving unit, the source driving unit receiving the first gamma reference voltage and the at least one first gamma adjustment voltage. The display of claim 12, wherein the gamma adjustment circuit further comprises: a plurality of second voltage dividing units connected in series to the first voltage dividing unit and the U second reference voltage Each of the second voltage dividing units includes: a second reference resistor; and a second impedance adjusting component electrically connected to the second reference resistor for adjusting the equivalent of the second voltage dividing unit The impedance, wherein at least one of the second impedance adjusting components is a second adjusting resistor, and the remaining second impedance adjusting components are respectively a second wire. 17. The display of claim 16, wherein each of the second voltage dividing units divides the first reference voltage and the second reference voltage to output a second gamma reference voltage. 18. The display of claim 17, wherein in the at least one second voltage dividing unit including the second adjusting resistor, a node between the second adjusting resistor and the second reference resistor A second gamma adjustment voltage is generated. 19. The display of claim 18, wherein the driving component comprises a source driving unit, the source driving unit receiving the 23rd 201037673 0810160ITW 30322twf.doc/n digamma reference voltage and the at least A second gamma adjustment voltage. 20. The display of claim 12, wherein the first reference voltage is a system voltage and the second reference voltage is a ground voltage. twenty four