CN112639945A

CN112639945A - Display device and display driving method thereof

Info

Publication number: CN112639945A
Application number: CN201880094163.7A
Authority: CN
Inventors: 郭星灵; 张肖; 谭小平
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2018-09-21
Filing date: 2018-09-21
Publication date: 2021-04-09
Also published as: WO2020056739A1

Abstract

The invention discloses a display device (10, 30, 50) and a display driving method thereof, wherein a display panel (11, 31, 51) of the display device (10, 30, 50) comprises a plurality of adjusting areas (110, 510), the adjusting areas (110, 510) are arranged in parallel along a first direction (F1), and the display driving method comprises the following steps: adjusting a plurality of image data to be displayed provided to each adjustment region (110, 510), and outputting the adjusted image data to the corresponding adjustment region (110, 510); alternatively, the driving voltage (ELVDD) is supplied to two opposite sub-directions along a second direction (F2) in each adjustment region (110, 510), the second direction (F2) being perpendicular to the first direction (F1).

Description

Display device and display driving method thereof

Technical Field

The present invention relates to the field of display driving technologies, and in particular, to a display device and a display driving method thereof.

Background

Fig. 1 is a schematic diagram showing a transmission method of a driving Voltage (ELVDD) of an Organic Light-Emitting Diode (OLED) display Device in the prior art. The ELVDD is multiplexed out of plane after being generated with a voltage by a Power driver 5(Power IC), transmitted from near to far in a direction in which the Power supply line 6 is arranged by the Power driver 5, and then drives the organic light emitting diode to emit light in cooperation with a data voltage Vdara of the corresponding image data transmitted by the data line 7 to perform image display.

However, in the actual operation process of such a driving scheme, there is a phenomenon of uneven brightness, and especially, the brightness of the display area adjacent to the power driver 5 is higher than that of the display area far away from the voltage chip 5, so that the image displayed by the display panel is not good, and the visual experience of the user is affected.

Disclosure of Invention

In order to solve the above problem, an embodiment of the present invention discloses a display device capable of improving a display effect and a display driving method thereof.

A display driving method of a display device, a display panel of the display device including a plurality of adjustment regions arranged in parallel along a first direction, the display driving method comprising: and adjusting a plurality of image data to be displayed provided to each adjusting area, and outputting the adjusted image data to the corresponding adjusting area.

A display driving method of a display device, a display panel of the display device including a plurality of adjustment regions arranged in parallel along a first direction, the display driving method comprising:

providing the driving voltage to two opposite sub-directions along a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.

A display device comprises a display panel for displaying images, a data driver and a power driver, wherein the data driver and the power driver are arranged on one side of the display panel, the display panel comprises a plurality of adjustment areas, the adjustment areas are arranged in parallel along a first direction, the data driver is used for providing image data for displaying the images for the display panel along the first direction,

the display device further comprises a processing module, wherein the processing module is used for adjusting a plurality of image data to be displayed, which are provided to each adjusting area, and the processing module is used for outputting the adjusted image data to the corresponding adjusting area through the data driver.

A display device includes a display panel for image display, a data driver and a power driver provided at one side of the display panel, the display panel including a plurality of adjustment regions arranged in parallel along a first direction, the data driver for providing image data for image display to the display panel along the first direction,

the power supply driver supplies the driving voltage to two opposite sub-directions in a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.

The invention provides a display device and a display driving method, and a processing module adjusts the sub-adjustment areas of a display panel, so that the brightness difference of each area of the display panel is improved, and the display effect of the display panel is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic block diagram of a conventional OLED display device.

Fig. 2 is a functional block diagram of a display device according to a first embodiment of the present invention.

Fig. 3 is a schematic area diagram of a display device.

Fig. 4 is a functional block diagram of the timing controller.

Fig. 5 is a schematic block diagram of a lookup unit.

FIG. 6 is a schematic diagram of gray levels before and after adjustment in each adjustment region.

FIG. 7 is a diagram illustrating a relationship between an initial gray level and an adjusted gray level according to another embodiment of the present invention.

Fig. 8 is a functional block diagram of a display device according to a second embodiment of the present invention.

Fig. 9 is a schematic block diagram of a processing module.

FIG. 10 is a gamma scheme.

FIG. 11 is a diagram illustrating gamma reference voltages corresponding to adjustment regions of a display panel according to an embodiment.

FIG. 12 is a diagram illustrating a relationship between an analog signal voltage and a gray level value according to an embodiment.

FIG. 13 is a diagram illustrating a relationship between a gray level value and a luminance according to an embodiment.

Fig. 14 is a schematic plan view of a display device according to a fourth embodiment of the present invention.

Fig. 15 is a flowchart of a display driving method of a display device according to a third embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As for the problem of brightness unevenness in the image display of the OLED display device shown in fig. 1, it has been found through intensive research that, even under the premise of ensuring that the image data voltage Vdara is accurately transmitted to each pixel unit, that is, under the influence of the transmission factor of the image data voltage Vdata, when analyzing from the angle of another driving voltage ELVDD, since the driving voltage ELVDD in the initial state output by the power driver 5 is transmitted unidirectionally in the process of being transmitted on the power line, the resistance on the power line 6 gradually increases with the increase of the distance from the power driver 5, so that the driving voltage ELVDD is continuously decreased with the increase of the transmission distance on the power line 6, that is, even under the premise that the image data voltage Vdara is completely accurate, the voltage difference between the data voltage Vdara and the driving voltage ELVDD decreases with the increase of the distance from the voltage chip 5, and then the brightness of the OLED light-emitting element is gradually reduced, so that the root cause of the uneven brightness and poor display effect of the image displayed on the display panel is finally found.

In order to solve the foregoing technical problem, this embodiment provides a display device, where the display device includes a display panel for displaying an image, a data driver and a power driver, where the data driver and the power driver are disposed on one side of the display panel, the display panel includes a plurality of adjustment regions, the adjustment regions are arranged in parallel along a first direction, the data driver is configured to provide image data for image display to the display panel along the first direction, the display device further includes a processing module, the processing module is configured to adjust the image data provided to each of the adjustment regions, and the processing module is configured to output the adjusted image data to the corresponding adjustment region through the data driver; alternatively, the power supply driver supplies the driving voltage to two opposite sub-directions in a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.

Referring to fig. 2, a functional block diagram of a display device 10 according to a first embodiment of the invention is shown.

As shown in fig. 2, the display device 10 includes a display panel 11, a timing controller 13, a data driver 15, a scan (gate) driver 17, and a power driver 19. The timing controller 13, the data driver 15, the scan driver 17, and the power driver 19 may be disposed independently of the display panel 11, or may be disposed directly in a non-display region (not shown) at a peripheral position of the display panel 11.

The display panel 11 is provided with a plurality of pixel units PX arranged in an array, while the display panel 11 further includes thereon data lines D (source lines D) extending along the first direction F1 and arranged at a first distance along the second direction F2, scan lines G (gate lines G) extending along the second direction F2 and arranged at a second distance along the first direction F1, and power supply lines 114 parallel to and in one-to-one correspondence with each of the scan lines G. That is, the first direction F1 is the extending direction of the data line D in the display panel 11. The second direction F2 is the extending direction of the power line 114 and the scan line G of the display panel 11. Each pixel unit PX is located in a region formed by 2 adjacent scan lines G and data lines D, and each pixel unit PX is connected to one scan line G, one data line D, and one power line 114.

The timing controller 13 is used for controlling the operation timings of the data driver 15, the scan driver 17 and the power driver 19 and supplying image data to be displayed to the data driver 15.

The data driver 15 is disposed at one side of the display panel 11, and the data driver 15 supplies image data to the pixel units PX in a first direction F1.

The scan driver 17 is used for sequentially scanning a plurality of scan lines G according to timing signals under the control of the timing controller 13, and the data driver 15 supplies a data voltage V corresponding to image data during a scanning period corresponding to one scan line G_dataTo all the data lines D, the power driver 19 supplies the driving voltage ELVDD to a row of the pixel units PX electrically connected to the scan lines G and the power lines 114 under the voltage control signal supplied from the timing controller 13, so that the row of the pixel units PX are at the data voltage V_dataAnd displaying an image by matching with the driving voltage ELVDD.

Note that the drive voltage supplied to all the power lines 114 and all the pixel units PX by the power driver 19 is the same.

Please refer to fig. 3, which is a schematic plane structure diagram of the first embodiment for providing image data for the display panel 11 shown in fig. 2.

As shown in fig. 3, the display panel 11 includes a plurality of adjustment regions 110. The adjustment regions 110 are divided in such a manner as to be arranged in parallel in sequence along the first direction F1. The adjustment regions 110 are sequentially denoted as a region 1, a region 2 from near to far along the first direction F1 from the data driver 15, a region (n-1), and a region n, where n is an integer greater than 1. In other words, the plurality of adjustment regions 110 gradually increase in distance along the first direction F1 with respect to one side edge of the display panel 11.

In the present embodiment, each adjustment region 110 includes at least one row of pixel units PX in the second direction F2.

Referring to fig. 4, the timing controller 13 includes a processing module 131 for adjusting a plurality of image data provided to each of the adjustment regions 110, and outputting the adjusted image data to the corresponding adjustment region 110 via the data driver 15.

More specifically, the timing controller 13 further includes a register module 133 for storing a look-up table 135 (shown in fig. 5). The lookup table 135 includes a plurality of lookup units (shown in fig. 5). The register module 133 stores each search unit in correspondence with the arrangement position of one adjustment area 110. The plurality of lookup units includes lookup unit 1(LUT1), lookup unit 2(LUT2). The searching unit 1 corresponds to the area 1, the searching unit 2 corresponds to the area 2.

The processing module 131 is configured to adjust a plurality of image data provided to each adjustment region 110 according to the search unit corresponding to each adjustment region 110 of the display panel 11, and output the adjusted image data to the corresponding adjustment region 110 through the data driver 15.

In this embodiment, the searching unit includes a corresponding relationship between each initial gray-scale value of the image data corresponding to the adjustment region 110 and the corresponding adjustment gray-scale value. The display panel 11 is divided into n adjustment regions 110 according to the display effect. According to the preset target brightness value corresponding to the initial gray-scale value of the image data (including each pixel unit PX in the adjustment region 110) of each adjustment region 110, the gray-scale value of each pixel unit PX in each adjustment region 110 is adjusted and changed and a corresponding adjustment gray-scale value is generated, and the corresponding relationship between each initial gray-scale value and the adjustment gray-scale value of each adjustment region 110 is recorded to generate a search unit.

The initial gray scale value of each adjustment region 110 may be adjusted by using the brightness of a certain adjustment region 110 as a standard (setting the region as a standard brightness region), so that the adjusted brightness of each adjustment region 110 is consistent with the gray scale brightness of the standard brightness region, and the generated correspondence relationship between the gray scales before and after adjustment is a search unit for subsequent adjustment compensation.

Referring to fig. 6, the gray-scale luminance of the initial gray-scale value 255 in the image data of the farthest adjustment region 110 (the region n in fig. 6) is taken as the preset target luminance value. The processing module 131 adjusts and changes the gray scale with the initial gray scale value of 255 in the image data of the other adjustment region 110 according to the preset target brightness value. Wherein the initial gray-scale value 255 in the image data of the adjustment region 110 (region (n-1) in fig. 6) adjacent to the region n is adjusted to the adjustment gray-scale value 254. the initial gray-scale value 255 in the image data of the adjustment region 110 (region 1 in fig. 6) located closer to the data driver 15 is adjusted to the adjustment gray-scale value 245. In this way, after the display brightness of the initial gray scale value 255 in the image data of each adjustment area 110 is adjusted, the adjusted display brightness is consistent with the gray scale brightness of 255 in the image data of the farthest adjustment area 110, that is, after the image data of each adjustment area 110 is adjusted, under the condition of the same initial gray scale value, the adjusted gray scale values are different, but the display brightness is the same, so that the difference of the display brightness of each adjustment area 110 of the display panel 11 is reduced. Obviously, the initial gray-scale value 255 of the image data of the remaining adjustment region 110 except the region n is smaller than the initial gray-scale value after adjustment. Here, the pixel unit PX having the initial gray-scale value 255 in the image data of each adjustment area 110 is described as an example, and the pixel units PX having the initial gray-scale values having the other gray-scale values are adjusted in a similar manner.

In one embodiment, fig. 7 is a graph of a gray level value corresponding relationship before and after adjustment in a lookup unit corresponding to one of the adjustment regions 110, where the horizontal axis is an initial gray level value and the vertical axis is an adjustment gray level value. For example, if the initial gray-scale value of a pixel cell PX is A1 (0. ltoreq. A1. ltoreq. 255), the adjusted gray-scale value of the pixel cell PX is B1 (0. ltoreq. B1. ltoreq. 255), and obviously, after correction compensation, B1 > A1.

The data driver 15 is configured to output the adjusted image data to the corresponding adjustment area 110. The processing module 131 obtains an adjusted gray level value corresponding to each initial gray level value of the image data, and the adjusted gray level value is used as an adjusted data voltage (V) corresponding to the adjusted region 110_{data_out}). The data driver 15 applies the adjusted data voltage to the data line D corresponding to the adjustment region 110. Referring again to FIG. 3, the adjusted data voltage applied to region 1 is set to V_{data(1)_out}The regulated data voltage applied to region 2 by the facility is V_{data(2)_out}..., the adjusted data voltage applied by the device to the region (n-1) is V_{data(n-1)_out}The regulated data voltage applied to the region n is V_{data(n)_out}。

The timing controller 13 transmits timing signals to the data driver 15 and the scan driver 17, respectively, by receiving the start signal. The timing signal comprises a plurality of pulses arranged continuously and periodically, wherein each pulse is scanned corresponding to a row of pixel cells PX arranged along the first direction F1, and the number of pulses characterizes the number of rows of pixel cells PX. The scan driver 17 is used for applying to the scan lines G according to the timing signals generated by the timing controller 13 to control the on and off of the thin film transistors of each row of pixel units PX. The power driver 19 is used for supplying the driving voltage ELVDD to each row of pixel units PX of the display panel 11 according to the power control signal supplied from the timing controller 13.

The timing controller 13 also includes a counting module 137 (shown in fig. 4). The counting module 137 is used for detecting the number of pulses in the timing signal to determine the position of the adjustment region 110 corresponding to the current image data signal. When the data driver 15 applies the adjusted data voltage to the data lines D of one adjustment region 110 of the display panel 11, if the number of pulses of the timing signal detected by the counting module 137 reaches the total number of rows of pixels corresponding to the adjustment region 110, the processing module 131 controls to switch the search unit corresponding to the next adjustment region 110. In this embodiment, the number of pulses is obtained by counting the number of rising edges of the timing signal, and in one embodiment, the number of pulses is obtained by counting the number of falling edges of the timing signal.

When the display panel 11 is lit, the timing controller 13 receives image data to be displayed. The processing module 131 adjusts and compensates the image data of each adjustment area 110 according to the search unit corresponding to each adjustment area 110. The data driver 15 supplies the adjusted image data to the corresponding adjustment area 110. For example, in the process of lighting the region 1 of the display panel 11, the data driver 15 adjusts the first adjustment data voltage V_{data(1)_out}Applied to the area 1, when the counting module 137 detects that the number of rising edges of the timing signal reaches the total number of rows of the 1 st pixel in the area 1, the processing module 131 controls to switch to the searching unit 2.

Since the processing module 131 performs adjustment compensation on the image data to be displayed according to the search unit corresponding to each adjustment region 110, the data driver 15 applies the adjustment data voltage of each adjustment region 110 to the data line D of each adjustment region 110. The adjustment data voltage is generated through compensation and correction, so that the gate voltage (Vg) of the display panel 11 is the same as the adjustment data voltage, thereby improving the brightness difference of each adjustment region 110 of the display panel 11 and improving the display effect of the display panel 11.

To facilitate implementation of the embodiments of the present invention, the display device 10 further includes other necessary or unnecessary structures and modules, such as a chip, a memory (which may include one or more computer-readable storage media). Wherein the chip can be integrated to include: one or more processors, a power management module. These components may communicate over one or more communication buses.

It should be understood that the display device 10 is only one example of the present invention, and that the display device 10 may have more or less components than those shown, may combine two or more components, or may have a different configuration of components.

The memory is coupled to the processor for storing various software programs and/or sets of instructions. In particular implementations, the memory may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.

Referring to fig. 8, a display device 30 according to a second embodiment of the invention is shown. The display device 30 is substantially similar to the display device 10 provided in the first embodiment, except that: the processing module 33 of the display device 30 performs gamma correction on the image data of each adjustment region (not shown), and the gamma correction value corresponding to each adjustment region (not shown) is different and changes monotonically with increasing distance from the adjustment region to the data driver. The single modulation is that the corresponding gamma correction value increases or decreases as the distance between the adjustment region and the data driver increases.

The processing module 33 is configured to obtain an initial gray scale value of image data in each adjustment region according to a lookup table (not shown), perform gamma correction on the initial gray scale value to generate an adjustment gray scale value, where the adjustment gray scale value is used as an adjustment data voltage; and outputting the adjusting data voltage to the corresponding adjusting area.

The register module 35 is configured to store a lookup table, where the lookup table includes a plurality of lookup units, and each lookup unit corresponds to one adjustment area. The registering module 35 establishes a correspondence between each search unit and an arrangement position of one adjustment area for storage. Referring to fig. 9, the processing module 33 is configured to perform gamma correction on a plurality of image data provided to each adjustment region according to the search unit corresponding to each adjustment region, and the initial gray level value is corrected and adjusted to correspond to the adjustment gray level value. The initial gray scale value is used as the initial data voltage V_aata(n) _{_in}The adjusted gray level value is used as the adjusted data voltage V_{data(n)_out}. The processing module 33 will adjust the data voltage V_{data(n)_out}To the corresponding adjustment region.

In the present embodiment, referring to fig. 10, 10-bit (i.e., 1024-gray scale) digital data (0, 1.. 1023) is converted into analog signal voltages (V0, V1.. V1023) having linearity. Referring to fig. 11, the gamma correction value is a predetermined gamma reference Voltage (VGMA), and each adjustment region corresponds to a predetermined gamma reference voltage.

Because gamma debugging is needed in practical application, and processing about display effects such as moire (De-mura) and the like is required, the gamma debugging effect is fully improved and the accuracy of image processing is improved by performing gamma debugging compensation on the display panel 31 in different regions in the embodiment.

In one embodiment, referring to fig. 12, gamma is corrected and adjusted with the same target brightness for each adjustment region of the display panel 31. The searching unit is a gamma table corresponding to the adjusting area.

In one embodiment, the gamma correction value is a gamma coefficient. Referring to fig. 13, the search unit is generated by setting different gamma coefficients corresponding to the display brightness difference of each adjustment region of the unadjusted front display panel 31.

Referring to fig. 14, a display device 50 according to a fifth embodiment of the present invention includes a display panel 51, a data driver 53 and a power driver 55. The display panel 51 is used for image display. The data driver 53 is provided on the display panel 51 side for supplying the display panel 51 with image data for image display along the first direction F1. The power driver 55 is provided at one side of the display panel 51 to supply a driving voltage (ELVDD) to the display panel 51. The first direction F1 is an extending direction of data lines (not shown) in the display panel 51. The second direction F2 is an extending direction of a power line (not shown) of the display panel 51.

Specifically, the display panel 51 includes a display area 511 and a non-display area 513. The display area 511 includes a plurality of adjustment regions 510. The non-display area 513 is disposed around the display area 511. The display panel 51 has a plurality of regularly arranged pixel units (not shown) disposed in the display region 511. In this embodiment, each adjustment region 510 has at least two rows of pixel units. The data driver 53 is provided in the non-display area 513. It is understood that the data driver 53 and the power driver 55 may be disposed in the non-display region 513, or may not be disposed on the display panel 51, but disposed on other structures of the display device 50, for example, the power driver 55 may be disposed on a flexible circuit board.

The power driver 55 provides the driving voltages to two opposite sub-directions along a second direction in each of the adjustment regions 510, the second direction F2 being perpendicular to the first direction F1.

The display panel 51 further includes a first end portion 515 and a second end portion 517, which are disposed opposite to each other, wherein the data driver 53 is disposed at the first end portion 515. The second direction F2 includes a first sub-direction along which the transmission direction of the driving voltage supplied to one adjustment region 510 is along and a second sub-direction opposite to the first sub-direction along which the transmission direction of the driving voltage supplied to the other adjustment region 510 is along in each of two adjacent adjustment regions 510. Wherein the first sub-direction is that the first end 515 faces the second end 517, and the second sub-direction is that the second end 517 faces the first end 515.

The display device 50 further comprises a first transmission line 57 and a second transmission line 58. The first transmission line 57 is extended from the power driver 55 to the first end 515 of the display panel 51, thereby supplying a driving voltage to each of the adjustment regions 510. The second transmission line 58 extends from the power driver 55 to the second end 517 of the display panel 51. In every two adjacent rows of pixel units of each adjustment region 510, the driving voltage of one row of pixel units is provided by the power driver 55 through the first transmission line 57, and the transmission direction of the driving voltage transmitted through the first transmission line 57 is the first sub-direction; the driving voltage for the other row of pixel cells is provided by the power driver 55 via the second transmission line 58, and the transmission direction of the driving voltage transmitted via the second transmission line 58 is the second sub-direction.

In one embodiment, it is not limited that the transmission direction of the driving voltages transmitted to each two adjacent rows of pixel units of each adjustment region 510 is opposite, wherein the transmission direction of the driving voltages transmitted to at least one row of pixel units in the adjustment region 510 is opposite to the transmission direction of the driving voltages transmitted to other rows of pixel units in the adjustment region 510.

When the display panel 51 is lit, the driving voltages supplied to every two adjacent rows of pixel units adopt opposite transmission directions, so that the brightness uniformity of the display panel 51 is improved, and the visual experience of a user is improved.

In the display device 50 of the present embodiment, the power driver 55 provides two sets of driving voltages ELVDD with opposite directions to the display panel 51, two sets of driving voltages ELVDD generate two voltage drops (IR drop) in the transmission directions, and the two voltage drops have spatially uniform effects on the display of the display panel 51, so as to achieve visually uniform display, effectively reduce the effects of the line resistance on the display effect, and effectively improve the image display effect.

Referring to fig. 15, a display driving method of a display device, a display panel of the display device includes a plurality of adjustment regions, the adjustment regions are arranged in parallel along a first direction, and the display driving method includes the following steps:

step 103, adjusting a plurality of image data to be displayed provided to each of the adjustment regions.

And 105, outputting the adjusted image data to the corresponding adjustment area.

In one embodiment, in step 103, the adjusting the plurality of image data to be displayed provided to each of the adjustment regions includes: each adjustment area corresponds to one search unit, and the image data provided to each adjustment area are adjusted according to the search unit corresponding to each adjustment area, wherein each search unit comprises an adjustment gray-scale value of each initial gray-scale value of the corresponding adjustment area.

In one embodiment, before the adjusting the plurality of image data to be displayed provided to each of the adjusting regions, that is, before step 103, the display driving method further includes: and generating a searching unit corresponding to each adjusting area in advance.

In an embodiment, the pre-generating the search unit corresponding to each adjustment region includes: and adjusting and changing the initial gray scale value of each adjusting area according to the preset target brightness value corresponding to the initial gray scale value of the image data of each adjusting area so as to generate a corresponding adjusting gray scale value, and recording the corresponding relation between the initial gray scale value and the adjusting gray scale value of each adjusting area to generate a searching unit.

In one embodiment, the adjusting, for the plurality of adjustment regions distributed along the first direction, a plurality of image data provided to each of the adjustment regions, and outputting the adjusted image data to the corresponding adjustment region includes: acquiring a plurality of initial gray-scale values corresponding to the image data in each adjusting area; and acquiring an adjustment gray scale value corresponding to each initial gray scale value according to the search unit corresponding to each adjustment area, wherein the adjustment gray scale value is used as an adjustment data voltage, and outputting the adjusted image data to the corresponding adjustment area comprises the following steps: applying the adjustment data voltage to the data line of the corresponding adjustment region.

In one embodiment, the distance between the adjustment regions and the data driver disposed at one side of the display panel gradually increases along a first direction, each adjustment region corresponds to a search unit, and the image data provided to each adjustment region is adjusted according to the search unit corresponding to the adjustment region, wherein each search unit includes an adjustment gray-scale value of each initial gray-scale value of the corresponding adjustment region, and the method includes: the image data of each adjustment region is gamma-corrected, and the gamma correction value corresponding to each adjustment region is different and monotonically changes with increasing distance from a data driver of the display device.

In one embodiment, the gamma correcting the image data for each adjustment region, the gamma correction value for each adjustment region being different and changing monotonically with increasing distance from the data driver, includes: acquiring an initial gray scale value of image data of each adjusting area; performing gamma correction on the initial gray-scale value to generate an adjusted gray-scale value, wherein the adjusted gray-scale value is used as an adjusted data voltage; and outputting the adjusting data voltage to the corresponding adjusting area.

In one embodiment, the outputting the adjusted image data to the corresponding adjustment region includes: the method comprises the steps of obtaining a time sequence signal, wherein the time sequence signal comprises a plurality of pulses which are continuously and periodically arranged, each pulse corresponds to a line of pixel units which are arranged along the first direction and is scanned, the number of the pulses represents the line number of the pixel units, when adjusted image data are output to an adjusting area of a display panel, the number of the pulses of the time sequence signal is detected, and if the number of the pulses reaches the total line number of pixels of the corresponding adjusting area, a searching unit corresponding to the next adjusting area is controlled to be switched.

In one embodiment, a display driving method of a display device having a display panel including a plurality of adjustment regions arranged in parallel in a first direction includes: the driving voltage is supplied to two opposite directions in a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.

In one embodiment, the supplying the driving voltage to two opposite directions along a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction, includes: the second direction comprises a first sub-direction and a second sub-direction opposite to the first sub-direction, every two adjacent rows of pixel units in each adjusting area have a first sub-direction along which the transmission direction of the driving voltage provided to one row of pixel units is along the second direction, and have a second sub-direction along which the transmission direction of the driving voltage provided to the other row of pixel units is along the second direction.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

A display driving method of a display device, wherein a display panel of the display device includes a plurality of adjustment regions arranged in parallel along a first direction, the display driving method comprising:

and adjusting a plurality of image data to be displayed provided to each adjusting area, and outputting the adjusted image data to the corresponding adjusting area.
The display driving method according to claim 1, wherein the adjusting a plurality of image data to be displayed supplied to each of the adjustment regions comprises:

each adjustment area corresponds to one search unit, and the image data provided to each adjustment area are adjusted according to the search unit corresponding to each adjustment area, wherein each search unit comprises an adjustment gray-scale value of each initial gray-scale value of the corresponding adjustment area.
The display driving method according to claim 2, wherein before the adjusting of the plurality of image data to be displayed supplied to each of the adjustment regions, the display driving method further comprises:

pre-generating a search unit corresponding to each adjustment region, where the pre-generating a search unit corresponding to each adjustment region includes:

and adjusting and changing the initial gray scale value of each adjusting area according to the preset target brightness value corresponding to the initial gray scale value of the image data of each adjusting area so as to generate a corresponding adjusting gray scale value, and recording the corresponding relation between the initial gray scale value and the adjusting gray scale value of each adjusting area to generate a searching unit.
The display driving method according to claim 3, wherein the adjusting a plurality of image data to be displayed supplied to each of the adjustment regions includes:

acquiring a plurality of initial gray-scale values corresponding to the image data in each adjusting area;

obtaining an adjustment gray scale value corresponding to each initial gray scale value according to the search unit corresponding to each adjustment area, wherein the adjustment gray scale value is used as an adjustment data voltage,

the outputting the adjusted image data to the corresponding adjustment region includes: and applying the adjusting data voltage to the data line of the corresponding adjusting area.
The display driving method according to claim 2, wherein the distance between the adjustment regions and the data driver disposed at one side of the display panel along the first direction gradually increases, each adjustment region corresponds to a search unit, and the image data provided to each adjustment region is adjusted according to the search unit corresponding to the adjustment region, wherein each search unit includes an adjustment gray-level value of each initial gray-level value of the corresponding adjustment region, and the method comprises:

the image data of each adjustment region is gamma-corrected, and the gamma correction value corresponding to each adjustment region is different and monotonically changes with increasing distance from a data driver of the display device.
The display driving method according to claim 5, wherein the gamma correction of the image data for each adjustment region, the gamma correction value for each adjustment region being different and changing monotonically with increasing distance from the data driver, comprises: acquiring an initial gray scale value of image data of each adjusting area; performing gamma correction on the initial gray-scale value to generate an adjusted gray-scale value, wherein the adjusted gray-scale value is used as an adjusted data voltage; and outputting the adjusting data voltage to the corresponding adjusting area.
The display driving method according to any one of claims 1 to 6, wherein the outputting the adjusted image data to the corresponding adjustment region includes:

the method comprises the steps of obtaining a time sequence signal, wherein the time sequence signal comprises a plurality of pulses which are continuously and periodically arranged, each pulse corresponds to a line of pixel units which are arranged along a first direction and is scanned, the number of the pulses represents the line number of the pixel units, when adjusted image data are output to an adjusting area of a display panel, the number of the pulses of the time sequence signal is detected, and if the number of the pulses reaches the total line number of pixels of the corresponding adjusting area, a searching unit corresponding to the next adjusting area is controlled to be switched.
A display driving method of a display device, wherein a display panel of the display device includes a plurality of adjustment regions arranged in parallel along a first direction, the display driving method comprising:

providing the driving voltage to two opposite sub-directions along a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.
The display driving method according to claim 8, wherein the supplying the driving voltage to two opposite sub-directions in the second direction in each of the adjustment regions comprises: the second direction comprises a first sub-direction and a second sub-direction opposite to the first sub-direction, every two adjacent rows of pixel units in each adjusting area have a first sub-direction along which the transmission direction of the driving voltage provided to one row of pixel units is along the second direction, and have a second sub-direction along which the transmission direction of the driving voltage provided to the other row of pixel units is along the second direction.
A display device, comprising a display panel for image display, a data driver and a power driver, the data driver and the power driver being disposed on one side of the display panel, the display panel comprising a plurality of adjustment regions, the adjustment regions being arranged side by side along a first direction, the data driver being configured to provide image data for image display to the display panel along the first direction,

the display device further comprises a processing module, wherein the processing module is used for adjusting a plurality of image data to be displayed, which are provided to each adjusting area, and the processing module is used for outputting the adjusted image data to the corresponding adjusting area through the data driver.
The display device according to claim 10, wherein the display device further comprises a register module, the register module is configured to store a lookup table, the lookup table comprises a plurality of lookup units, and each lookup unit comprises a corresponding relationship between each initial gray-scale value and an adjusted gray-scale value of the adjustment region; the processing module is used for adjusting a plurality of image data to be displayed provided to each adjusting area according to the searching unit corresponding to each adjusting area.
The display apparatus according to claim 11, wherein the adjustment gray-scale value is generated by a preset target brightness value corresponding to an initial gray-scale value of each adjustment region image data.
The display device according to claim 12, wherein the processing module is configured to obtain a plurality of initial gray-scale values corresponding to the image data in each adjustment region, and obtain an adjustment gray-scale value corresponding to each initial gray-scale value according to the search unit corresponding to each adjustment region, where the adjustment gray-scale value is used as the adjustment data voltage; the data driver is used for applying the adjusting data voltage to the data line of the corresponding adjusting area.
The display device of claim 12, wherein the processing module is further configured to perform gamma correction on the image data for each adjustment region, the gamma correction value for each adjustment region being different and changing monotonically with increasing distance from the data driver.
The display device of claim 14, wherein the processing module is configured to obtain an initial gray-scale value of the image data of each adjustment region; and carrying out gamma correction on the initial gray-scale value to generate an adjusted gray-scale value, wherein the adjusted gray-scale value is used as an adjusted data voltage.
The display device according to any one of claims 10 to 15, further comprising a timing controller electrically connected to the display panel, the data driver, the processing module and the power driver, wherein the data driver outputs the adjusted image data to the adjustment region of the display panel based on a timing signal transmitted from the timing controller.
The display device of claim 16, wherein the timing signal comprises a plurality of pulses arranged in a continuous and periodic manner, wherein each pulse is scanned for a row of pixel cells arranged along the first direction, the number of pulses characterizing the number of rows of pixel cells,

the display device further comprises a counting module, wherein the counting module is used for detecting the number of pulses of the time sequence signal, detecting the number of pulses of the time sequence signal when adjusted image data is output to one adjustment area of the display panel, and controlling to switch the searching unit corresponding to the next adjustment area if the number of pulses reaches the total number of pixel rows of the corresponding adjustment area.
A display device, comprising a display panel for image display, a data driver and a power driver provided on one side of the display panel, wherein the display panel comprises a plurality of adjustment regions arranged in parallel along a first direction, the data driver is configured to provide image data for image display to the display panel along the first direction,

the power supply driver supplies the driving voltage to two opposite sub-directions in a second direction in each of the adjustment regions, the second direction being perpendicular to the first direction.
The display device according to claim 18, wherein the second direction includes a first sub-direction and a second sub-direction opposite to the first sub-direction, and in each two adjacent rows of pixel cells in each of the adjustment regions, the power supply driver supplies the driving voltage to one row of the pixel cells in the first sub-direction of the second direction, and supplies the driving voltage to the other row of the pixel cells in the second sub-direction of the second direction.
The display device of claim 19, wherein the display panel further comprises a first end and a second end disposed opposite to each other, wherein the first sub-direction is that the first end faces the second end, and the second sub-direction is that the second end faces the first end, the display device further comprising a first transmission line and a second transmission line, the first transmission line extending from the power driver to the first end of the display panel, the second transmission line extending from the power driver to the second end of the display panel.