TWI650741B - Display panel and driving method thereof - Google Patents

Abstract

The display panel includes: a pixel array having a plurality of pixels, a plurality of data lines, and a plurality of gate lines, wherein the pixels are located at individual intersections of the data lines and the gate lines; a source driver coupled to the data lines of the pixel array for outputting a plurality of gray scale voltages to the pixels; and a plurality of gate drivers coupled to the gates of the pixel array Line, used to decide whether to open these pixels. The source drivers adjust an output gray scale voltage outputted to the pixels according to a distance between the pixels and the source drivers.

Description

Display panel and driving method thereof

The present invention relates to a display panel and a method of driving the same.

In the case of a display device (such as a liquid crystal display LCD), as the resolution is increased and the frame rate is increased, the load of the data signal line of the panel becomes heavier, and the far-end pixel (a picture farther from the signal source) The data signal received by the source is called the far-end pixel, and the source of the signal is, for example, the source driver.

A high slew rate (HSR) technique has been proposed to compensate for the distortion of the data signal.

FIG. 1 is a diagram showing waveforms of data signals received by a near-end pixel and a far-end pixel in the prior art. However, due to the high slew rate technique, as shown in Figure 1, the data signal received by the near-end pixel (the pixel near the source is called the near-end pixel) may be jittery (such as The problem of overshoot, undershoot, etc., and the brightness of the near-end pixels is too bright, which tends to increase power consumption. Due to the relationship between the RC delay and the HSR effect cancellation, the data signal received by the far-end pixel is less jittery, but the far-end pixel is darker.

Therefore, there is a need for a display panel and a driving method thereof for the purpose of improving the above problems.

According to an embodiment of the present invention, a display panel includes: a pixel array having a plurality of pixels, a plurality of data lines, and a plurality of gate lines, wherein the pixels are located in the data lines and the gates An individual intersection of the polar lines; a plurality of source drivers coupled to the data lines of the pixel array for outputting a plurality of gray scale voltages to the pixels; and a plurality of gate drivers coupled to the plurality of gate drivers The gate lines of the pixel array are used to determine whether to open the pixels. The source drivers adjust an output gray scale voltage outputted to the pixels according to a distance between the pixels and the source drivers.

According to another embodiment of the present invention, a driving method of a display panel is provided. The display panel includes a pixel array, a plurality of source drivers, and a plurality of gate drivers. The pixel array has a plurality of pixels and a plurality of data lines. And a plurality of gate lines, the pixels are located at the respective intersections of the data lines and the gate lines, and the source drivers are coupled to the data lines of the pixel array and used to output a plurality of grays The gate voltage is coupled to the pixels, and the gate drivers are coupled to the gate lines of the pixel array and used to determine whether to turn on the pixels. The driving method includes: spacing the pixels according to the pixels A distance between the pole drivers adjusts an output gray scale voltage outputted by the source drivers to the pixels.

In order to better understand the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings

200‧‧‧ display panel

210‧‧‧ pixel array

220_1-220_M‧‧‧Source Driver

230_1-230_N‧‧‧ gate driver

P11-PMN‧‧ ‧ pixels

D1-DM‧‧‧ data line

G1-GN‧‧‧ gate line

V0-VN‧‧‧ gray scale voltage

300‧‧‧Source Driver

310‧‧‧ Gray scale voltage adjustment unit

320‧‧‧Control unit

330‧‧‧ Gray scale voltage generating unit

GLBON‧‧‧ gray scale voltage adjustment signal

R1-R6, R71-R7X, R81-R8X‧‧‧ resistance

SWR1, SWR2, SWR31-SWR3X, SWR41-SWR4X‧‧‧ Switching resistor strings

SW1, SW2, SW31-SW3X, SW41-SW4X‧‧‧ switch

AVDD‧‧‧ voltage source

GND‧‧‧ Grounding

FEH, DFH, 7FH, 1FH, 01H, 00H, FFH+△VB, 00H-△VB‧‧‧ gray scale voltage

γ‧‧‧Original gamma curve

γ’‧‧‧Adjusted gamma curve

iGMA1-iGMA14, iGMA4'‧‧‧ voltage

L1-L5‧‧‧ Curve

T1-T6‧‧‧ Timing

700‧‧‧ display panel

710‧‧‧ pixel array

720_1-720_M‧‧‧ source driver

730_1-730_N‧‧‧ gate driver

Ts‧‧‧Charging time

FIG. 1 is a diagram showing waveforms of data signals received by a near-end pixel and a far-end pixel in the prior art.

Fig. 2 is a view showing a display panel according to the first embodiment of the present invention.

Fig. 3 is a functional block diagram showing a source driver according to the first embodiment of the present invention.

Fig. 4 is a view showing the adjustment of the gray scale voltage according to the first embodiment of the present invention.

Figure 5 shows the original gamma curve and the adjusted gamma curve.

Fig. 6 is a view showing a gray scale voltage waveform diagram according to the first embodiment of the present invention.

Fig. 7 is a view showing a display panel according to a second embodiment of the present invention.

Fig. 8 is a view showing a waveform diagram of a gray scale voltage according to the second embodiment of the present invention, in which a waveform diagram of the gray scale voltages of the first region and the second region is displayed.

The technical terms of the present specification refer to the idioms in the technical field, and some of the terms are explained or defined in the specification, and the explanation of the terms is based on the description or definition of the specification. Various embodiments of the present disclosure each have one or more of the technical features. Those skilled in the art can selectively implement some or all of the technical features of any embodiment, or selectively combine some or all of the technical features of these embodiments, where possible.

First embodiment

Fig. 2 is a view showing a display panel according to the first embodiment of the present invention. As shown in FIG. 2, the display panel 200 includes a pixel array 210, a plurality of source drivers (SD) 220_1-220_M (M is a positive integer), and a plurality of gate drivers (GD) 230_1-230_N (N is positive Integer). The pixel array 210 includes a plurality of pixels P11-PMN, a plurality of data lines D1-DM and a plurality of gate lines G1-GN, wherein the pixels P11-PMN are located at an individual intersection of the data lines D1-DM and the gate lines G1-GN At the office. The data lines D1-DM are electrically coupled to the source drivers 220_1-220_M, respectively, and the gate lines G1-GN are electrically coupled to the gate drivers 230_1-230_N, respectively. The details of the pixel array 210 can be omitted herein.

The source drivers 220_1-220_M are coupled to the data lines D1-DM of the pixel array 210 for outputting a plurality of gray scale voltages to the pixels P11-PMN. The gate drivers 230_1-230_N are coupled to the gate lines G1-GN of the pixel array 210 for determining whether to turn on the pixels P11-PMN.

Fig. 3 is a functional block diagram showing the source driver 300 according to the first embodiment of the present invention. As shown in FIG. 3, the source driver 300 includes at least: a gray level boosting circuit 310, a control unit 320, and a gray scale voltage generating unit 330.

The gray scale voltage adjustment unit 310 is coupled to the control unit 320. The gray scale voltage adjusting unit 310 is configured to determine whether to adjust the gray scale voltage generated by the gray scale voltage generating unit 330, and accordingly generate the gray scale voltage adjustment signal GLBON to the control unit 320.

The control unit 320 is coupled to the gray scale voltage adjustment unit 310 and the gray scale voltage generating unit 330. When the gray scale voltage adjustment signal GLBON received by the control unit 320 indicates that the gray scale voltage is to be adjusted, the control unit 320 controls the gray scale voltage generating unit 330 to cause the gray scale voltage generating unit 330 to generate the adjusted gray scale voltage to the pixel. Array 210.

As shown in FIG. 3, the gray scale voltage generating unit 330 includes: a plurality of series resistors (here, four series resistors R1 - R4 are taken as an example, but the case is not limited thereto), and the switch The resistor strings SWR1, SWR2, SWR31-SWR3X (X is a positive integer) and SWR41-SWR4X. Of course, the source driver 300 can include other necessary functional components, which are omitted herein.

The switch resistor string SWR1 is connected to the resistor R1. The switch resistor string SWR1 includes a switch SW1 and a resistor R5, wherein the switch SW1 is connected in series to the resistor R1, and the resistor R5 is connected in series to the switch SW1.

The switch resistor string SWR2 is connected to the resistor R4. The switch resistor string SWR2 includes a switch SW2 and a resistor R6, wherein the switch SW2 is connected in series to the resistor R4, and the resistor R6 is connected in series to the switch SW2. Whether the switch SW1 and the switch SW2 are turned on or not is synchronized. That is, the switch SW1 and the switch SW2 are turned on synchronously or synchronously.

The switch resistor strings SWR31-SWR3X are connected in parallel with each other (so may also be referred to as a shunt switch resistor string) and are connected in parallel between the voltage source AVDD and the resistor R6 of the switch resistor string SWR1. The switch resistor strings SWR31-SWR3X include switches SW31-SW3X and resistors R71-R7X, respectively, wherein the switches SW31-SW3X are connected in series to the resistor R5 of the switch resistor string SWR1, and the resistors R71-R7X are respectively connected in series to the switches SW31-SW3X.

Similarly, the switch resistor strings SWR41-SWR4X are connected in parallel with each other (so, also referred to as a shunt switch resistor string), and are connected in parallel between the ground GND and the resistor R6 of the switch resistor string SWR2. The switch resistor strings SWR41-SWR4X include switches SW41-SW4X and resistors R81-R8X, respectively, wherein switches SW41-SW4X are connected in series to resistor R6 of switch resistor string SWR2, and resistors R81-R8X are connected in series to switches SW41-SW4X, respectively.

Therefore, under the control of the control unit 320, when the gray scale voltage needs to be adjusted When the switches SW1 and SW2 are turned on, the switches SW31-SW3X and the switches SW41-SW4X can be selectively turned on as needed, as shown in FIG. Fig. 4 is a view showing the adjustment of the gray scale voltage according to the first embodiment of the present invention. Although in FIG. 4, the switches SW31 and SW41 are turned on, and the remaining switches SW32-SW3X and SW42-SW4X are turned off, they are not intended to limit the present case.

Therefore, the control unit 320 controls the conduction of the switch resistor strings SWR31-SWR3X and SWR41-SWR4X and controls the effective resistance values of the switch resistor strings SWR31-SWR3X and SWR41-SWR4X, which can generate different gray scale voltages FFH+ΔVB and gray. The step voltage 00H-ΔVB, wherein the value of ΔVB is related to the number of on-off switches of the switch resistor strings SWR31-SWR3X and SWR41-SWR4X. When the number of on-resistors of the switch resistor strings SWR31-SWR3X and SWR41-SWR4X is small, the value of ΔVB is large, and vice versa. Further, the value of ΔVB can be determined depending on the distortion of the gray scale voltage received by the pixel. In Fig. 3, FEH, DFH, 7FH, 1FH, 01H, and 00H are also gray scale voltages.

Figure 5 shows the original gamma curve γ and the adjusted gamma curve γ'. For example, in the case of the original gamma curve γ before adjustment, the voltage corresponding to the gray scale voltage 7FH is iGMA4. In view of the adjusted gamma curve γ', the adjusted voltage corresponding to the gray scale voltage 7FH is iGMA4', wherein the voltage iGMA4' is higher than the voltage iGMA4. iGMA1-iGMA14 is the voltage.

The details of the operation of the first embodiment of the present invention will be explained below. In the first embodiment of the present invention, the gray scale voltage adjusting unit 310 immediately detects the gray scale voltage output by the source driver (illustrated by taking the source driver 220_1 in FIG. 2 as an example) (as shown in FIG. 2, Source The gray scale voltage V0) output by the pole driver 220_1 and the actual gray scale voltages V1-VN received by the respective pixels. As shown in FIG. 2, the gray scale voltages V1-VN actually received by the pixels P11-P1N are different from the gray scale voltage V0 outputted by the source driver, wherein the gray scale voltages V1-VN are affected by the RC of the signal lines. There are different signal distortions due to the effects of delay/RC attenuation. In principle, V1 distortion is the lowest and VN distortion is the highest.

As is known, due to the RC delay of the signal line, the signal is transmitted to the farther end, and the RC attenuation encountered is more severe.

Therefore, in the first embodiment of the present invention, the gray scale voltage adjusting unit 310 immediately detects the gray scale voltage V0 output by the source driver and the gray scale voltage received by the pixel currently in the on state. For example, when the pixel P1N is currently in the on state, the grayscale voltage adjusting unit 310 immediately detects the grayscale voltage V0 output by the source driver and the grayscale voltage actually received by the pixel P1N currently in the on state. VN. If the difference between the gray scale voltage V0 and the gray scale voltage VN is greater than a reference value (this reference value can be adjusted according to requirements), the gray scale voltage actually received by the pixel representing the currently open state is more serious. distortion. Therefore, the gray scale voltage adjusting unit 310 outputs a logic high gray scale voltage adjustment signal GLBON to the control unit 320. Accordingly, the control unit 320 can control the switch resistor strings SWR1, SWR2, SWR31-SWR3X, and SWR41-SWR4X according to the situation. Do not turn on the situation to increase all grayscale voltages (such as the adjusted gamma curve γ' in Figure 5).

Conversely, if the difference between the gray scale voltage V0 and the gray scale voltage VN is smaller than the reference value, the distortion of the gray scale voltage actually received by the pixel representing the currently on state is less severe. Therefore, the gray scale voltage adjustment unit 310 outputs a logic low gray scale The voltage adjustment signal GLBON is given to the control unit 320. According to the control unit 320, the respective conduction states of the switch resistor strings SWR1, SWR2, SWR31-SWR3X and SWR41-SWR4X can be controlled according to the situation, so that all the gray scale voltages are as original ( The original gamma curve γ as shown in Fig. 5.

Generally speaking, the farther away from the source (ie, the source driver), the farther pixels (such as pixels P1N, P2N, etc.), the more severe the received grayscale voltage will be, when driving these far When the pixel is on, it may be necessary to increase the grayscale voltage. Conversely, the closer to the source (ie, the source driver), the near-end pixels (such as pixels P11, P21, etc.), the distortion of the received gray-scale voltage is less severe, when driving these near-end paintings When it is prime, it may be unnecessary to increase the gray scale voltage.

Fig. 6 is a view showing a gray scale voltage waveform diagram according to the first embodiment of the present invention. The curve L1 represents the ideal gray scale voltage (i.e., the gray scale voltage V0 output by the source driver), and the curve L2 represents the adjusted gray scale voltage actually received by the pixel (at the rising edge). Representing that before the timing T1, the difference between the adjusted grayscale voltage actually received by the pixel and the ideal grayscale voltage is still greater than the reference value (that is, the grayscale voltage adjustment unit 310 outputs a logic high grayscale voltage adjustment signal GLBON is given to control unit 320). Due to the gray-scale voltage adjustment, the difference between the adjusted gray-scale voltage actually received by the pixel and the ideal gray-scale voltage is equal to or smaller than the reference value at the timing T1. In the present embodiment, in order to avoid excessive adjustment At the timing T1, the gray scale voltage adjustment function is turned off (that is, the gray scale voltage adjustment signal GLBON of the output logic low is supplied to the control unit 320). After the timing T1, the gray scale voltage is as shown by the curve L3.

Similarly, when the falling edge is turned on, the gray scale voltage adjustment function is turned on, and the curve L4 represents the adjusted grayscale voltage (when falling edge) actually received by the pixel. At timing T2, the difference between the adjusted grayscale voltage actually received by the pixel and the ideal grayscale voltage is equal to or less than the reference value, so the grayscale voltage adjustment function can be turned off (ie, the grayscale voltage The adjustment unit 310 outputs a logic low gray scale voltage adjustment signal GLBON to the control unit 320). After the timing T2, the gray scale voltage is as shown by the curve L5.

Therefore, comparing Fig. 1 and Fig. 6, it can be seen that in Fig. 1, although HSR technology is applied, jitter may occur. However, in FIG. 6, by adjusting the gray scale voltage and appropriately turning off the gray scale voltage adjustment function, the embodiment of the present invention can effectively solve the problem of jitter, and the distortion of the gray scale voltage of the far-end pixel can also be improved.

Second embodiment

In the second embodiment of the present invention, the time for turning on the gray scale voltage adjustment function is determined according to the area where the pixel is located. Fig. 7 is a view showing a display panel according to a second embodiment of the present invention. As shown in FIG. 7, the display panel 700 includes a pixel array 710, a plurality of source drivers 720_1-720_M, and a plurality of gate drivers 730_1-730_N. Wherein, according to the distance from the source (source driver 720_1-720_M), the pixel array 710 is virtually partitioned into a plurality of regions (the first region to the Y region, Y is a positive integer), that is, the first region is away The source drivers 720_1-720_M are closest, the second region is closer to the source drivers 720_1-720_M, and the Yth region is farthest from the source drivers 720_1-720_M. For example, with a resolution of 4K (3840*2160) as an example, 2160 gate lines can be divided into 5 zones (Y=5), and each zone includes 2160/5=432 gate lines. Of course, this case is not limited to this.

According to each zone, the gray scale voltage adjustment unit in the source driver turns on different gray scale voltage adjustment function time. Figure 8 shows a gray scale according to the second embodiment of the present invention. A waveform diagram of a voltage in which waveforms of gray scale voltages of the first region and the second region are displayed. In Fig. 8, ts represents the charging time of one source signal line (for example, taking 4K resolution as an example, the charging time of one source signal line is about 2.7 μs, ts = 2.7 μs). Taking the first zone as an example, at the rising edge and the falling edge, the opening time of the gray scale voltage adjustment function = Z% * ts (the Z value can be adjusted as needed, but Z is a positive value); and the second zone is taken as an example. At the rising edge and the falling edge, the turn-on time of the gray scale voltage adjustment function (also referred to as gray scale voltage adjustment time) = 2 * Z% * ts.

The following is an example of Z=5 and ts=2.7μs, but it is not limited to this case. That is, taking the first area as an example, at the rising edge, after the source signal line starts charging, the gray scale voltage adjustment function is turned on first, and when the timing T3 is reached, the gray scale voltage adjustment function is turned off, wherein the timing T3 represents gray. The turn-on time of the step voltage adjustment function = 5% * 2.7 μs = 0.135 μs. Similarly, taking the first area as an example, at the falling edge, after the end of the source signal line is charged, the gray scale voltage adjustment function is turned on, and when the timing T4 is reached, the gray scale voltage adjustment function is turned off, wherein the timing T4 represents the gray scale. The turn-on time of the voltage adjustment function = 5% * 2.7 μs = 0.135 μs.

Taking the second area as an example, at the rising edge, after the source signal line starts charging, the gray scale voltage adjustment function is turned on first, and when the timing T5 is reached, the gray scale voltage adjustment function is turned off, wherein the timing T5 represents the gray scale voltage adjustment. The on time of the function = 10% * 2.7 μs = 0.27 μs. Similarly, taking the second area as an example, at the falling edge, after the end of the source signal line is charged, the gray scale voltage adjustment function is turned on, and when the timing T6 is reached, the gray scale voltage adjustment function is turned off, wherein the timing T6 represents the gray scale. The turn-on time of the voltage adjustment function = 10% * 2.7 μs = 0.27 μs.

Of course, the opening time of the grayscale voltage adjustment function per zone is not necessarily If the number of additional stages increases, it can be adjusted according to the situation.

As for how to judge the region where the currently driven pixel is located, various methods are proposed in the second embodiment of the present case, and two of them are described below.

The first type of partition determination method: look up the table

The gray scale voltage adjusting unit in the source driver may have a look-up table unit. Through the look-up table, the gray scale voltage adjusting unit knows which region the currently driven pixel belongs to, and also knows the gray scale voltage adjusting function of the region. What is the opening time? Therefore, when the gray scale voltage adjustment function of the region is started (for example, when the source signal line starts to be charged or begins to discharge), the gray scale voltage adjusting unit can generate a logic high gray scale voltage adjustment signal GLBON to the control unit to The gray scale voltage adjustment function is turned on (that is, the switch resistor strings SWR1 and SWR2 are turned on, and the SWR31-SWR3X and SWR41-SWR4X are selectively turned on). When the gray scale voltage adjustment function of the area is to be ended (as in the timing T3-T6 in FIG. 8), the gray scale voltage adjustment unit can generate a logic low gray scale voltage adjustment signal GLBON to the control unit to turn off the gray scale. Voltage adjustment function.

The second type of partition determination method: counting

The gray scale voltage adjusting unit in the source driver may have a counting unit. Through the counting, the gray scale voltage adjusting unit knows which area the currently driven pixel belongs to, and also knows the opening time of the gray scale voltage adjusting function of the area. How much. Therefore, when the gray scale voltage adjustment function of the region is started (for example, when the source signal line starts to be charged or begins to discharge), the gray scale voltage adjusting unit can generate a logic high gray scale voltage adjustment signal GLBON to the control unit to Turn on the grayscale voltage adjustment function. When the grayscale voltage adjustment function of the zone is to be ended (as in the timing T3-T6 in Fig. 8), the grayscale voltage adjustment unit can generate a logic low gray. The step voltage adjustment signal GLBON is applied to the control unit to turn off the gray scale voltage adjustment function.

What's more, you can let the user choose the resolution. According to the resolution selected by the user (the total number of partitions of the entire display panel is assumed to be fixed here), the grayscale voltage adjustment unit of the source driver can know how to The gate lines are partitioned. For example, with a resolution of 4K as an example, there are 2,160 gate lines. Therefore, taking the 5 zone as an example, there are 2160/5=432 gate lines per zone. When the gray scale voltage adjusting unit counts 1-432, the gray scale voltage adjusting unit can judge that the pixel located in the first area is currently being driven; similarly, when the gray scale voltage adjusting unit counts 433-864, the gray scale voltage adjusting unit It can be judged that the pixel located in the second zone is currently being driven, and the rest can be deduced by analogy.

In the second embodiment of the present invention, the turn-on time of the gray scale voltage adjustment is determined according to the distance between the pixel sources (source drivers) and the farther away from the RC delay. When the pixel in the farther zone is driven, the grayscale voltage adjustment is turned on longer to compensate for the RC delay.

The structure of the source driver of the second embodiment of the present invention is substantially similar to that of the source driver 300 of the first embodiment of the present invention. However, the operation and principle of the gray scale voltage adjusting unit of the source driver of the second embodiment of the present invention are different from the present case. The gray scale voltage adjusting unit 310 of the source driver 300 of the first embodiment is different from the following. In the second embodiment of the present invention, the gray scale voltage adjusting unit can determine the gray scale voltage adjustment time to be turned on by determining which partition the pixel currently being driven belongs to. In the first embodiment of the present invention, the gray scale voltage adjusting unit 310 of the source driver 300 compares the gray scale voltage output by the source driver and the gray scale voltage actually received by the pixel (by the RC attenuation). The difference between them determines whether the grayscale voltage adjustment function is turned on/off instantly.

In addition, in the above two embodiments, each source driver includes a gray scale voltage adjusting unit, but in other possible embodiments of the present invention, the gray scale voltage adjusting unit may be independent of the source driver and all the sources. The driver shares one or several gray scale voltage adjustment units, which is also within the spirit of the case.

In addition, in the above two embodiments, when the actual gray scale voltage received by the pixel is attenuated due to the RC attenuation, the embodiment of the present invention does not adjust the gray scale value, but adjusts the gray scale voltage (as shown in FIG. 5). Shown).

It can be seen from the above that in the above embodiments of the present invention, by adjusting the gray scale voltage, the problem of gray scale voltage jitter can be effectively solved for the near-end pixel, and the problem of increasing power consumption can be effectively solved; In terms of pixels, the brightness is appropriately compensated, which can effectively solve the problem of uneven brightness.

In addition, in the above embodiments of the present invention, by adjusting (increasing) the gray scale voltage, the problem of insufficient pixel charging can be improved, and a better pixel charging time can be obtained.

In conclusion, the present invention has been disclosed in the above embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

Claims (15)

A display panel includes: a pixel array having a plurality of pixels, a plurality of data lines, and a plurality of gate lines, wherein the pixels are located at individual intersections of the data lines and the gate lines; a plurality of source drivers coupled to the data lines of the pixel array for outputting a plurality of gray scale voltages to the pixels; and a plurality of gate drivers coupled to the pixel arrays a gate line for determining whether to turn on the pixels, wherein the source drivers adjust an output gray scale voltage to be output according to a distance between the pixels and the source drivers The pixel is determined to determine whether the output gray scale voltage is an original gray scale voltage or an adjusted gray scale voltage. The display panel of claim 1, wherein the individual internal effective resistance values of the source drivers are adjusted according to the distance between the pixels and the source drivers to adjust each of the pixels. The output gray scale voltage of some of the source drivers. The display panel of claim 1, wherein the source drivers instantaneously compare the output gray scale voltage output by the source drivers with an actual gray scale voltage actually received by the pixels. a difference value between the two; if the difference value is greater than a reference value, the source drivers turn on a gray scale voltage adjustment to adjust the output gray scale voltage output; and if the difference value is not greater than a reference value, The source drivers then turn off the gray scale voltage adjustment. The display panel of claim 1, wherein the pixels of the pixel array are virtually divided into a plurality of regions according to the distance between the pixels and the source drivers. The source drivers determine which regions the currently driven pixels belong to to determine a grayscale voltage adjustment time. The display panel of claim 4, wherein the source drivers determine a region to which the currently driven pixels belong to by using a look-up table, and determine to turn on the grayscale voltage adjustment time. The display panel of claim 4, wherein the source drivers count, determine which region the currently driven pixels belong to, and determine to turn on the grayscale voltage adjustment time. The display panel of claim 1, wherein each source driver comprises: a control unit, and a gray scale voltage generating unit coupled to the control unit, the gray scale voltage generating unit comprising: a plurality of The series resistors are connected in series with each other; a first switch resistor string is connected in series to the series resistors; a second switch resistor string is connected in series to the series resistors; a plurality of first parallel switch resistor strings are connected in parallel with each other and connected in series a first switch resistor string; and a plurality of second shunt switch resistor strings connected in parallel with each other and in series with the second switch resistor string; wherein the control is based on the distance between the pixels and the source drivers The unit controls the conduction and effective resistance values of the first switch resistor string, the second switch resistor string, the first parallel switch resistor strings, and the second parallel switch resistor strings. The display panel of claim 7, wherein the source driver uses a lookup table to determine which region the currently driven pixels belong to, and when the source driver decides to adjust the output. The output of the gray scale voltage, the first open The off resistor string and the second switch resistor string are turned on, and the first shunt switch resistor string and the second shunt switch resistor strings are selectively turned on. The display panel of claim 7, wherein the source driver counts to determine which region the currently driven pixels belong to, and when the source driver decides to adjust the output When the gray scale voltage is output, the first switch resistor string and the second switch resistor string are turned on, and the first parallel switch resistor string and the second parallel switch resistor strings are selectively turned on. A display panel driving method, the display panel includes a pixel array, a plurality of source drivers, and a plurality of gate drivers, the pixel array having a plurality of pixels, a plurality of data lines, and a plurality of gate lines, The pixels are located at the intersections of the data lines and the gate lines, and the source drivers are coupled to the data lines of the pixel array and used to output a plurality of gray scale voltages to the pixels. The gate drivers are coupled to the gate lines of the pixel array and used to determine whether to turn on the pixels. The driving method includes: according to a distance between the pixels and the source drivers, Adjusting an output gray scale voltage outputted by the source drivers to the pixels and determining whether the output gray scale voltage is an original gray scale voltage or an adjusted gray scale voltage. The driving method of claim 10, wherein the individual internal effective resistance values of the source drivers are adjusted according to the distance between the pixels and the source drivers to adjust each of the pixels. The output gray scale voltage of some of the source drivers. The driving method of claim 10, wherein the source drivers instantaneously compare the output gray scale voltage output by the source drivers with an actual gray scale voltage actually received by the pixels a difference value between the two; if the difference value is greater than a reference value, the source drivers turn on a gray scale voltage adjustment to adjust the output gray scale voltage output; If the difference value is not greater than a reference value, the source drivers turn off the gray scale voltage adjustment. The driving method of claim 10, wherein the pixels of the pixel array are virtually divided into a plurality of regions according to the distance between the pixels and the source drivers, the sources The pole driver determines which zone the currently driven pixels belong to to determine a grayscale voltage adjustment time. The driving method of claim 13, wherein the source drivers determine a region to which the currently driven pixels belong to by using a look-up table, and determine to turn on the grayscale voltage adjustment time. The driving method of claim 13, wherein the source drivers count, determine which region the currently driven pixels belong to, and decide to turn on the grayscale voltage adjustment time.