WO2020258147A1

WO2020258147A1 - Display device and display driving method

Info

Publication number: WO2020258147A1
Application number: PCT/CN2019/093239
Authority: WO
Inventors: 杨文强; 熊彬; 秦杰辉
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-30
Also published as: CN113348499A

Abstract

A display driving method, which is applied to a display device (100). The display device (100) comprises a data driving circuit (1), a scanning driving circuit (2), and a plurality of pixel units (3) which are arranged in an array manner. The pixel units (3) which are arranged in the array manner are divided into at least two display partitions (A1), and each display partition (A1) comprises at least one row of pixel units (3). The method comprises: adjusting a scanning voltage applied to at least one row of pixel units (3) in each display partition (A1) according to a conducting distance at which the data driving circuit (1) applies a data voltage to each display partition (A1), wherein the scanning voltage is positively correlated with the conducting distance; and sequentially providing an adjusted scanning voltage for at least one pixel unit (3) in each display partition (A1) by means of the scanning driving circuit (2). When the attenuation of the data voltage applied by the data driving circuit (1) to the display partition (A1) increases due to the increase of the conducting distance, the scanning voltage is increased, the attenuation of the data voltage can be effectively compensated, and the uniformity of light emitting is maintained.

Description

Display device and display driving method

Technical field

The present application relates to a display technology, and in particular to a display device and a display driving method used for the display device.

Background technique

Currently, display devices such as OLED (Organic Light Emitting Diode) display panels/displays have been widely used. Among them, AMOLED (Active Matrix Organic Light Emitting Diode; Active Matrix Organic Light Emitting Diode) display devices are the most commonly used type of OLED display devices due to their high display performance and low power consumption. The current AMOLED display device is driven by row scanning and column data lines, and the driving voltage output by the data driver is applied to the pixels in the corresponding column gated by the row scanning through the data line of each column. However, due to the impedance of the data line itself, it will cause a voltage drop in the data voltage output by the data driver, and as the conduction distance of the data voltage increases, the voltage drop will be greater, making the pixels farther from the data driver receive The data voltage will be smaller, because the light-emitting brightness of the pixel depends on the applied data voltage, resulting in uneven light emission of the AMOLED display device.

Summary of the invention

The present application provides a display device and a display driving method, which can compensate for the attenuation of the data voltage caused by the conduction distance, and improve the light emission uniformity of the display device.

An embodiment of the present application provides a display device. The display device includes a data driving circuit, a scan driving circuit, and a plurality of pixel units arranged in an array. The plurality of pixel units arranged in an array are divided into at least two display regions, and each display region includes at least one row of pixel units. The data driving circuit is electrically connected to a plurality of columns of pixel units through a plurality of data lines, and is used to provide data voltages for the corresponding column of pixel units according to the content to be displayed. The scan driving circuit is electrically connected to a plurality of rows of pixel units through a plurality of scan lines, and is used to sequentially provide a scan voltage for each row of pixel units, wherein the scan driving circuit applies a data voltage to each display partition according to the data driving circuit. The conduction distance adjusts the scan voltage applied to at least one row of pixel units in each display area, the scan driving circuit applies the scan voltage to at least one row of pixel units in each display area, and the data driving circuit applies the data voltage to each display area. One shows that the conduction distance of the partition is positively correlated.

Another embodiment of the present application provides a display driving method applied to a display device. The display device includes a data driving circuit, a scanning driving circuit, and a plurality of pixel units arranged in an array, wherein the pixels arranged in an array The unit is divided into at least two display partitions, each display partition includes at least one row of pixel units, and the display driving method includes: adjusting the transmission distance applied to each display partition according to the conduction distance of the data voltage applied by the data driving circuit to each display partition. Scanning voltage of at least one row of pixel units, wherein the scanning voltage applied by the scan driving circuit to at least one row of pixel units in each display partition is positively correlated with the conduction distance of the data voltage applied by the data driving circuit to each display partition; and The scan driving circuit sequentially provides the adjusted scan voltage for at least one pixel unit in each display area.

In the present application, when the increase in the conduction distance leads to an increase in the attenuation of the data voltage applied by the data driving circuit to the display partition, by increasing the scan voltage, the attenuation of the data voltage can be effectively compensated, so that the light emission provided to the pixel unit The voltage of the device remains roughly constant, maintaining the uniformity of light emission.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic structural diagram of a display device in an embodiment of the application.

FIG. 2 is a schematic plan view showing each display partition of the display device in an embodiment of the application.

FIG. 3 is a schematic plan view of a display device in another embodiment of the application showing each display partition.

FIG. 4 is a schematic diagram of a specific structure of a pixel unit in an embodiment of the application.

FIG. 5 is a schematic diagram of the relationship between the conduction degree of the switch tube and the gate-source voltage in an embodiment of the application.

FIG. 6 is a more specific structural diagram of a display device in an embodiment of the application.

FIG. 7 is a flowchart of a display driving method in an embodiment of the application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Please refer to FIG. 1, which is a schematic structural diagram of a display device 100 in an embodiment of the application.

As shown in FIGS. 1 and 2, the display device 100 includes a data driving circuit 1, a scan driving circuit 2, and a plurality of pixel units 3 arranged in an array. Each pixel unit 3 can correspond to a pixel point of the display device 100. The data driving circuit 1 and the scanning driving circuit 2 are coupled to the plurality of pixel units 3 arranged in an array.

The data driving circuit is electrically connected to several columns of pixel units 3 through several data lines D1, and is used to provide data voltages for the pixel units 3 of the corresponding column according to the content to be displayed.

The scan driving circuit 2 is electrically connected to a plurality of rows of pixel units 3 through a plurality of scan lines G1, and is used to sequentially provide scan voltages for each row of pixel units 3. The scan driving circuit 2 applies a data voltage to each row according to the data driving circuit 1. The conduction distance of a display area A1 adjusts the scan voltage applied to at least one row of pixel units 3 in each display area A1, and the scan driving circuit 2 applies to at least one row of pixel units 3 in each display area A1. The conduction distance of the data driving circuit 1 applying the data voltage to each display area A1 is positively correlated.

Therefore, when the increase in the conduction distance causes the attenuation of the data voltage applied by the data driving circuit to the display partition to increase, by increasing the scan voltage, the attenuation of the data voltage can be effectively compensated.

Specifically, when the data driving circuit 1 applies the data voltage to the display area A1, the longer the conduction distance, the greater the scan voltage applied by the scan driving circuit 2, so that the switch tube in the pixel unit 3 in the corresponding display area A1 The higher the degree of conduction, the smaller the resistance value of the switch tube, and the smaller the divided voltage. Therefore, even if the data voltage is attenuated due to the increase of the conduction distance, the scanning voltage can be adjusted to provide the pixel unit 3 The voltage of the light-emitting device remains substantially unchanged, maintaining the uniformity of the overall light emission of the display device 100.

As shown in FIG. 1, each data line D1 is sequentially connected to at least one row of pixel units 3 in each display area A1 of the corresponding column, and the conduction distance of the data driving circuit 1 applying the data voltage to each display area A1 is the data driving circuit The length L of the data line D1 connected between 1 and each display area A1.

That is, as shown in FIG. 1, one end of each data line D1 is connected to the data driving circuit 1, and the other end of each data line D1 sequentially extends through each display area A1 and is connected to the pixel unit 3 of the corresponding column in the corresponding display area A1. Therefore, the data driving circuit 1 applies the corresponding data voltage to the pixel unit 3 of the corresponding column in each display area A1 through the data line D1, and the conduction distance of the data driving circuit 1 applying the data voltage to each display area A1 is the data driving circuit 1. The length L of the data line D1 connected to each display area A1.

As shown in FIG. 1, further, the data driving circuit 1 includes a number of data driving interfaces P1, and each data line D1 is connected to a corresponding data driving interface P1 and sequentially extends through at least one row in each display area A1 in a corresponding column. The pixel units 3 are sequentially connected to at least one row of pixel units 3 in each display area A1. The length of the data line D1 connected between the data driving circuit 1 and each display area A1 passes at least The length between the connection point N1 of a row of pixel units 3 connected to the data line D1 and the corresponding data driving interface P1 is obtained.

In some embodiments, when a certain display area A1 includes at least two rows of pixel units 3, the length of the data line D1 connected between the data driving circuit 1 and the display area A1 is: within the display area A1 The average value of the distance between the connection point N1 of each row of pixel units 3 connected to the data line D1 and the corresponding data driving interface P1 in the data driving circuit 1.

For example, as shown in FIG. 1, the display area A1 at the top includes two rows of pixel units 3. The first row of pixel units 3 is connected to the connection point N11 of the data line D1 and the data driving interface corresponding to the data driving circuit 1. The distance between P1 is d1, and the distance between the connection point N12 of the second row of pixel units 3 connected to the data line D1 and the corresponding data driving interface P1 in the data driving circuit 1 is d2. Then, the length of the data line D1 connected between the data driving circuit 1 and the display area A1 may be (d1+d2)/2.

In other embodiments, when a certain display area A1 includes at least two rows of pixel units 3, the length of the data line D1 connected between the data driving circuit 1 and the display area A1 is: the display area A The distance between the connection point N1 of any row of pixel units 3 connected to the data line D1 and the data driving circuit 1.

For example, as shown in FIG. 1, the distance between the connection point N11 of the first row of pixel units 3 connected to the data line D1 and the corresponding data driving interface P1 in the data driving circuit 1 is d1, and the second row of pixel units 3 The distance between the connection point N12 connected to the data line D1 and the corresponding data driving interface P1 in the data driving circuit 1 is d2. Then, the length of the data line D1 connected between the data driving circuit 1 and the display area A1 may be d1 or d2.

Wherein, in this application, different data lines D1 connected by different data driving interfaces P1 of the data driving circuit 1 extend to the same distances of pixel units 3 in different columns of the same display area A1, so that in a certain row of the display area A1 The distance between the connection point N1 between the pixel unit 3 and the data line D1 in a certain column and the corresponding data drive interface P1 can be regarded as the connection point N1 between all the pixel units 3 in the row of the pixel unit 3 and the data line D1 The distance from the corresponding data-driven interface P1. Therefore, the distance between the connection point N1 of a row of pixel units 3 connected to the data line D1 and the data driving circuit 1 in this application refers to: the pixel unit 3 in any column of the row of pixel units 3 is connected to It corresponds to the distance between the connection point N1 of the data line D1 and the data driving interface P1 of the data driving circuit 1.

The number of rows of pixel units 3 included in different display areas A1 may be the same or different.

Please refer to FIG. 2, which is a schematic plan view showing each display area A1 of the display device 100 in an embodiment of this application. As shown in FIG. 2, the number of rows of pixel units 3 included in each display area A1 is the same.

Please refer to FIG. 3, which is a schematic plan view illustrating each display area A1 of the display device 100 in another embodiment of the present application. As shown in FIG. 3, the number of rows of pixel units 3 included in different display areas A1 is different.

Obviously, in other embodiments, the number of rows of pixel units 3 included in the partial display area A1 of the display device 100 may be the same, and the number of rows of pixel units 3 included in the partial display area A1 are different.

In some embodiments, the number of rows of pixel units 3 included in each display area A1 is less than or equal to the preset number, so as to ensure that the data voltages of different rows in the same display area A1 have approximately the same attenuation due to the conduction distance, and the pixel units 3 emit The brightness is approximately equal, and by applying the same scanning voltage, the light-emitting brightness of the display area A1 can be adjusted to be approximately the same as that of other display areas A1.

Wherein, the preset number can be preset according to the resolution and screen size of the display device 100. Specifically, the number of rows included in the unit preset distance of the display device 100 can be obtained according to the resolution and screen size of the display device 100, and the number of rows included in the unit preset distance can be used as the preset number.

The unit preset distance is a millimeter-level physical distance. The multiple rows of pixel units 3 within the unit preset distance can be regarded as a whole, that is, the attenuation caused by the conduction distance is approximately the same, and the luminance of the pixel unit 3 is approximately Equal, etc. The unit preset distance may be 0.2 mm or the like.

Please also refer to FIG. 4, which is a schematic diagram of a specific structure of the pixel unit 3. Among them, each pixel unit 3 has the same structure. As shown in FIG. 4, only the specific structure of one pixel unit is illustrated for description. Wherein, each pixel unit 3 may include a light-emitting display device J1 and a pixel driving circuit 32, and the pixel driving circuit 32 is used to drive the corresponding light-emitting display device J1 to emit light.

Among them, each pixel driving circuit 32 includes a scanning switch tube T1 and a driving switch tube T2. The driving control circuit 1 also includes a driving power supply (not shown) for providing a positive voltage ELVDD.

As shown in FIG. 4, the driving switch T2 of each pixel unit 3 is electrically connected between the positive voltage ELVDD, the scan switch T1 of the same pixel unit 3 and the positive terminal V+ of the light emitting display device J1 of the same pixel unit 3. The negative terminal V- of the light emitting display device J1 of each pixel unit 3 is electrically connected to the ground potential point ELVSS.

Among them, all the pixel units 3 are connected to the same positive voltage ELVDD and ground potential point ELVSS.

Wherein, the gate G of the scan switch tube T1 is connected to the corresponding scan line G1, and is electrically connected to the scan driving circuit 2 through the corresponding scan line G1.

The drain D of the scan switch T1 is connected to the corresponding data line D1, and is connected to the data driving circuit 1 through the corresponding data line D1. The source S of the scan switch T1 is connected to the drive switch T2. Grid connection. The drain D and source S of the driving switch tube T2 are respectively connected to the positive voltage ELVDD and the positive terminal V+ of the light emitting display device J1.

Therefore, when the scan voltage applied by the scan driving circuit 2 is different, the gate-source voltage Vgs of the scan switch tube T1 is different, and the conduction degree of the scan switch tube T1 is different.

Please also refer to FIG. 5, which is a schematic diagram of the relationship between the conduction degree of the scan switch tube T1 and the gate-source voltage Vgs. As shown in FIG. 5, before reaching the turn-on threshold, the greater the gate-source voltage Vgs, the greater the conduction degree of the scan switch T1, and the smaller the resistance of the scan switch T1, the smaller the divided voltage. Therefore, when the increase in the conduction distance causes the attenuation of the data voltage to increase, the gate-source voltage Vgs is increased by increasing the scan voltage, so that the resistance value of the scan switch tube T1 becomes smaller and the divided voltage is reduced. Therefore, the voltage supplied to the gate of the driving switch tube T2 can be kept substantially the same as when the data voltage is not attenuated, or the voltage supplied to the gate of the driving switch tube T2 in the pixel unit 3 in each display area A1 can be made Are all equal. Therefore, the conduction degree of the driving switch tube T2 is the same, and the voltage applied to the positive terminal V+ of the corresponding light-emitting display device J1 from the ELVDD in the pixel unit 3 in each display area A1 is the same. As a result, the light-emitting brightness of the pixel units 3 in all the display areas A1 can be approximately the same.

The light emitting display device J1 includes at least one Organic Light Emitting Diode (OLED) D1. Only one organic light-emitting diode D1 is shown in FIG. 4. Obviously, in other embodiments, the light-emitting display device J1 may include a plurality of devices connected in series or in parallel between the positive terminal V+ and the negative terminal V- of the light-emitting display device J1. Organic light emitting diode D1.

Please refer to FIG. 6, which is a more specific structural diagram of a display device in an embodiment of the application. As shown in FIG. 6, the display device 100 further includes an adjustment controller 4, which is coupled to the scan driving circuit 2, and the adjustment controller 4 is used for conducting distance and scanning according to a preset data voltage. The corresponding relationship between the voltages and the conduction distance applied by the current data driving circuit to each display area A1 determines the current target scan voltage required for each display area A1, and outputs the corresponding control signal to the scan driving circuit 2 so that The scan driving circuit 2 adjusts the scan voltage applied to the pixel unit 3 in each display area A to a corresponding target scan voltage.

That is, in some embodiments, the display device 100 is preset with a corresponding relationship between the data voltage conduction distance and the scan voltage, and the conduction distance applied to each display area A1 by the data driving circuit can be obtained according to the corresponding relationship and , And can determine the target scan voltage required for each display area A1.

In some embodiments, the preset correspondence between the data voltage conduction distance and the scan voltage defines the correspondence between multiple data voltage conduction distance intervals and the scan voltage, and the adjustment controller 4 first determines the data driving circuit 1 The data voltage conduction distance interval in which the conduction distance applied to each display area A1 is located, and then the data voltage conduction distance interval and the scan voltage are defined according to the preset correspondence between the data voltage conduction distance and the scan voltage. The corresponding relationship determines the target scanning voltage required for each display area A1.

Therefore, by predefining multiple intervals, there is no need for each conduction distance to correspond to a scanning voltage, which reduces the amount of data calculation and simplifies control.

As shown in FIG. 6, the display device 100 further includes a memory 5, and the memory 5 stores length data of the data line D1 connected between each display area A1 and the data driving circuit 1, wherein each display area A1 The length data of the data line D1 connected to the data driving circuit 1 is obtained according to pre-measurement or further calculation. Wherein, the length data is a length value.

For example, as mentioned above, the multiple distances between the connection point N1 of the multiple rows of pixel units 3 connected to the data line D1 of a certain display area A1 and the data driving interface P1 corresponding to the data driving circuit 1 can be measured in advance, Then, the average value of the multiple distances is used as the length of the data line D1 connected between the display area A1 and the data driving circuit 1.

For another example, the distance between the connection point N1 of any row of pixel units 3 connected to the data line D1 and the data driving circuit 1 in the display area A can be measured in advance, and any row of pixel units 3 can be connected to the The distance between the connection point N1 of the data line D1 and the data driving circuit 1 is taken as the length of the data line D1 connected between the display area A1 and the data driving circuit 1.

Wherein, the adjustment controller 4 determines the length data of the data line D1 connected between each display area A1 and the data driving circuit A as the conduction distance applied by the data driving circuit 1 to each display area A1, and according to The correspondence between the preset data voltage conduction distance and the scan voltage and the current conduction distance applied by the data driving circuit to each display area A1 determine the current target scan voltage to be applied to each display area A1.

The correspondence relationship between the preset data voltage conduction distance and the scanning voltage may be a correspondence relationship table stored in the memory 5. The corresponding relationship between the preset data voltage conduction distance and the scan voltage can be obtained by pre-analyzing the attenuation caused by different conduction distances and how much target scan is applied to compensate for the attenuation.

As shown in FIG. 6, the display device 100 further includes a level shift controller 6. The shift controller 6 is located between the adjustment controller 4 and the scan driving circuit 2. The adjustment controller The control signal output by 4 is converted by the shift controller 6 and then output to the scan driving circuit 2.

For example, the control signal can be switched in level and timing through the shift controller 6.

As shown in FIG. 6, the display device 100 further includes a timing controller 7. The timing controller 7 is connected to the shift controller 6 and connected to the data driving circuit 1, and the timing controller 7 uses To generate corresponding various timing signals, and output to the data drive circuit 1 and output to the scan drive circuit 2 through the shift controller 6, and the data voltage output by the data drive circuit 1 and the scan drive circuit 2 output The timing of the voltage is controlled. For example, the scan driving circuit 2 is controlled to output scan voltages row by row, and the data driving circuit 1 is controlled to output data voltages in corresponding columns according to the content to be displayed.

As shown in FIG. 6, the display device 100 further includes a power supply module 8, which is used to supply power to the adjustment controller 4, the timing controller 7, etc., and the power supply module 8 may include DC/DC ( The DC-to-DC converter 81 is used to convert the connected voltage into a suitable working voltage to supply power to the regulating controller 4, the timing controller 7, etc.

Wherein, the display device 100 may also include other devices, which are not described here because they are not related to the improvement of the present application.

Wherein, the display device 100 is an AMOLED (Active Matrix Organic Light Emitting Diode; Active Matrix Organic Light Emitting Diode) display screen, display panel, etc. It can also be a mobile phone, tablet computer, TV, display, etc. including AMOLED display and display panel.

Among them, the aforementioned adjustment controller 4 may be a central processing unit, a microcontroller, a microprocessor, a single-chip microcomputer, a digital signal processor, etc.

Wherein, the data driving circuit 1 and the scanning driving circuit 1 may be two physically independent driving chips, or may be integrated driving chips to form a whole.

In some embodiments, the division of the display area A1 may be set by the manufacturer before leaving the factory, and the distance between each display area A1 and the data driving circuit 1 is also predetermined by the manufacturer and stored in the memory 5. in.

Please refer to FIG. 7, which is a flowchart of a display driving method in an embodiment of the application. The display driving method is applied to a display device. The display device includes a data drive circuit, a scan drive circuit, and a plurality of pixel units arranged in an array, wherein the pixel units arranged in an array are divided into at least two display regions, and each display region includes at least one row of pixel units, so The display driving method includes:

S701: Adjust the scan voltage applied to at least one row of pixel units in each display area according to the conduction distance of the data voltage applied by the data driving circuit to each display area, wherein the scan driving circuit is applied to at least one row in each display area The scan voltage of a row of pixel units is positively correlated with the conduction distance of the data voltage applied by the data driving circuit to each display area.

S703: Provide adjusted scan voltages to at least one row of pixel units in each display partition sequentially through the scan driving circuit.

In some embodiments, the display driving method includes: according to the content to be displayed, a data driving circuit is used to provide data voltages to pixel units of a corresponding column.

In some embodiments, the adjusting the scan voltage applied to at least one row of pixel units in each display area according to the conduction distance of the data voltage applied by the data driving circuit to each display area includes:

Determine the current target scan voltage to be applied for each display area according to the preset correspondence between the data voltage conduction distance and the scan voltage and the current conduction distance applied by the data driving circuit to each display area;

The scan driving circuit is controlled to adjust the scan voltage applied to the pixel unit in each display partition to a corresponding target scan voltage.

In some embodiments, the preset correspondence between the data voltage conduction distance and the scan voltage defines the correspondence between multiple data voltage conduction distance intervals and the scan voltage, and the preset data voltage conduction distance and the scan voltage correspond to each other. The correspondence between the voltages and the conduction distance applied by the current data driving circuit to each display partition determines the current target scanning voltage required for each display partition, and further includes:

Determine the data voltage conduction distance interval in which the conduction distance applied by the data driving circuit to each display partition is located;

The target scan voltage to be applied for each display partition is determined according to the correspondence between the plurality of data voltage conduction distance intervals defined in the preset correspondence between the data voltage conduction distance and the scan voltage and the scan voltage.

In some embodiments, the display driving method further includes determining the conduction distance applied by the data driving circuit to each display partition.

Wherein, the determining the conduction distance applied by the data driving circuit to each display partition may include: determining the data driving circuit according to preset length data of the data line connected between each display partition and the data driving circuit The conduction distance applied to each display area.

Wherein, the data driving circuit includes a plurality of data driving interfaces, and each data line is connected to a corresponding data driving interface and sequentially extends through at least one row of pixel units located in each display partition in a corresponding column to sequentially connect with each display partition. At least one row of pixel units connected to each display area, the method further includes: obtaining each of the presets based on the length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data drive interface Display the length data of the data line connected between the partition and the data drive circuit.

In some embodiments, the length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data drive interface is used to obtain the preset display area and data drive interface. The length data of the data lines connected between the circuits, including:

When a certain display area includes at least two rows of pixel units, it is determined that the length of the data line connected between the data driving circuit and the display area is: each row of pixel units in the display area is connected to the data line The average value of the length between the connection point and the corresponding data drive interface in the data drive circuit.

In other embodiments, the length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data drive interface is used to obtain the preset display area and data The length data of the data lines connected between the driving circuits include:

When a certain display area includes at least two rows of pixel units, it is determined that the length of the data line connected between the data driving circuit and the display area is: any row of pixel units in the display area is connected to the data line The length between the connection point and the corresponding data drive interface in the data drive circuit.

Wherein, the preset correspondence between the data voltage conduction distance and the scan voltage is a prestored correspondence table.

Wherein, the display driving method can be applied to the aforementioned display device 100. The steps included in the display driving method correspond to the functional steps performed by the aforementioned display device 100, and related descriptions may be cross-referenced.

Therefore, in the display device 100 and the display driving method of the present application, the scan voltage applied to each display partition is proportional to the conduction distance of the data voltage applied by the data driving circuit to the corresponding display partition. When the data driving circuit applies the data voltage to the display area as the conductive distance is farther, the scan voltage applied by the scan driving circuit is larger, so that the switch tube in the pixel unit in the corresponding display area becomes more conductive. The smaller the resistance value of, the smaller the divided voltage, so that even if the data voltage is attenuated due to the increase in the conduction distance, the voltage provided to the light emitting device in the pixel unit remains substantially unchanged.

The display driving method provided in this application can be implemented in hardware and firmware, or can be used as software or computer code that can be stored in a computer-readable storage medium such as CD, ROM, RAM, floppy disk, hard disk, or magneto-optical disk, or can be As the computer code originally stored on a remote recording medium or a non-transitory machine-readable medium, downloaded via a network, and stored in a local recording medium, the method described here can use a general-purpose computer or a special processor or be used in such as ASIC or FPGA Such programmable or dedicated hardware is presented in software stored on a recording medium. As can be understood in the art, a computer, processor, microprocessor, controller, or programmable hardware includes memory components, such as RAM, ROM, flash memory, etc., when the computer, processor, or hardware implements the processing methods described here When fetching and executing software or computer code, the memory component can store or receive the software or computer code. In addition, when a general-purpose computer accesses the code for implementing the processing shown here, the execution of the code converts the general-purpose computer into a dedicated computer for executing the processing shown here.

Wherein, the computer-readable storage medium may be a solid-state memory, a memory card, an optical disc, etc. The computer-readable storage medium stores program instructions for the computer to call to execute the display driving method shown in FIG. 7.

The above are the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and modifications can be made, and these improvements and modifications are also considered The protection scope of this application.

Claims

A display device, characterized in that the display device comprises:

A plurality of pixel units arranged in an array, wherein the pixel units arranged in an array are divided into at least two display regions, and each display region includes at least one row of pixel units;

The data driving circuit is electrically connected to several columns of pixel units through several data lines, and is used to provide data voltages for the corresponding column of pixel units according to the content to be displayed;

The scan driving circuit is electrically connected to a plurality of rows of pixel units through a plurality of scan lines, and is used to sequentially provide scan voltages for each row of pixel units, wherein the scan driving circuit applies a data voltage to each display partition according to the conduction of the data driving circuit The distance adjusts the scan voltage applied to at least one row of pixel units in each display area, the scan driving circuit applies the scan voltage to at least one row of pixel units in each display area, and the data driving circuit applies a data voltage to each The conduction distance of the display area is positively correlated.
The display device of claim 1, wherein each data line is sequentially connected to at least one row of pixel units located in each display area in a corresponding column, and the data driving circuit applies a data voltage to the conduction of each display area. The distance is the length of the data line connected between the data driving circuit and each display partition.
The display device according to claim 2, wherein the data driving circuit comprises a plurality of data driving interfaces, and each data line is connected to a corresponding data driving interface and sequentially extends through the corresponding column of the At least one row of pixel units are sequentially connected to at least one row of pixel units in each display area, and the length of the data line connected between the data driving circuit and each display area is connected to at least one pixel unit in each display area The length between the connection point of the data line and the corresponding data drive interface is obtained.
4. The display device of claim 3, wherein when a certain display area includes at least two rows of pixel units, the length of the data line connected between the data driving circuit and the display area is: the display The average value of the distance between the connection point of each row of pixel units in the subarea connected to the data line and the data driving interface corresponding to the data driving circuit.
4. The display device of claim 3, wherein when a certain display area includes at least two rows of pixel units, the length of the data line connected between the data driving circuit and the display area is: the display The distance between the connection point of any row of pixel units in the subarea connected to the data line and the data driving interface corresponding to the data driving circuit.
The display device according to any one of claims 2-5, wherein the display device further comprises an adjustment controller, the adjustment controller is coupled to the scan driving circuit, and the adjustment controller is configured to The corresponding relationship between the data voltage conduction distance and the scan voltage and the conduction distance applied by the current data driving circuit to each display partition determine the current target scan voltage required for each display partition, and output the corresponding control signal to the scan driver Circuit, so that the scan driving circuit adjusts the scan voltage applied to the pixel unit in each display subarea to the corresponding target scan voltage.
7. The display device of claim 6, wherein the preset correspondence between the data voltage conduction distance and the scan voltage defines a plurality of correspondence between the data voltage conduction distance interval and the scan voltage, and the adjustment control The device first determines the data voltage conduction distance interval in which the conduction distance of the data driving circuit applied to each display partition is located, and then according to the preset data voltage conduction distance and the scanning voltage corresponding relationship defined multiple data voltage conduction distance The corresponding relationship between the interval and the scan voltage determines the target scan voltage to be applied for each display area.
7. The display device of claim 6, wherein the display device further comprises a memory, and the memory stores the length data of the data line connected between each display partition and the data drive circuit, wherein each display The length data of the data line connected between the partition and the data driving circuit is obtained according to pre-measurement, and the adjustment controller determines the length data of the data line connected between each display partition and the data driving circuit as the data driving circuit The conduction distance applied to each display partition, and the current target of each display partition needs to be determined according to the corresponding relationship between the preset data voltage conduction distance and the scan voltage and the current conduction distance applied by the data driving circuit to each display partition Scan voltage.
8. The display device of claim 8, wherein the correspondence between the preset data voltage conduction distance and the scanning voltage is a correspondence table stored in the memory.
8. The display device of claim 8, wherein the display device further comprises a shift controller, the shift controller is located between the adjustment controller and the scan driving circuit, the adjustment controller output The control signal is converted by the shift controller and then output to the scan driving circuit.
A display driving method applied to a display device, wherein the display device includes a data driving circuit, a scan driving circuit, and a plurality of pixel units arranged in an array, wherein the pixel units arranged in an array are divided into At least two display partitions, each display partition includes at least one row of pixel units, and the display driving method includes:

The scan voltage applied to at least one row of pixel units in each display area is adjusted according to the conduction distance of the data voltage applied by the data drive circuit to each display area, wherein the scan drive circuit is applied to at least one row of pixels in each display area The scan voltage of the cell is positively correlated with the conduction distance of the data voltage applied by the data driving circuit to each display area; and

The scan driving circuit sequentially provides the adjusted scan voltage for at least one pixel unit in each display area.
11. The display driving method of claim 11, wherein the method further comprises:

According to the content to be displayed, the data driving circuit provides the data voltage for the pixel unit of the corresponding column.
11. The display driving method of claim 11, wherein the adjusting the scan voltage applied to at least one row of pixel units in each display partition according to the conduction distance of the data voltage applied by the data driving circuit to each display partition comprises :

Determine the current target scan voltage to be applied for each display area according to the preset correspondence between the data voltage conduction distance and the scan voltage and the current conduction distance applied by the data driving circuit to each display area;

The scan driving circuit is controlled to adjust the scan voltage applied to the pixel unit in each display partition to a corresponding target scan voltage.
The display driving method of claim 13, wherein the preset correspondence between the data voltage conduction distance and the scan voltage defines a plurality of correspondence between the data voltage conduction distance interval and the scan voltage, and The correspondence between the preset data voltage conduction distance and the scan voltage and the current conduction distance applied by the data driving circuit to each display area determine the current target scan voltage required for each display area, including:

Determine the data voltage conduction distance interval in which the conduction distance applied by the data driving circuit to each display partition is located;

The target scan voltage to be applied for each display area is determined according to the corresponding relationship between the multiple data voltage conduction distance intervals defined in the preset correspondence between the data voltage conduction distance and the scan voltage and the scan voltage.
14. The display driving method according to any one of claims 11-14, wherein the display driving method further comprises:

Determine the conduction distance applied by the data driving circuit to each display partition.
15. The display driving method of claim 15, wherein the determining the conduction distance applied by the data driving circuit to each display partition comprises:

According to the preset length data of the data line connected between each display partition and the data driving circuit, the conduction distance applied by the data driving circuit to each display partition is determined.
The display driving method according to claim 16, wherein the data driving circuit includes a plurality of data driving interfaces, and each data line is connected to a corresponding data driving interface and sequentially extends through the corresponding columns located in the respective display partitions. At least one row of pixel units in each display area is sequentially connected to at least one row of pixel units in each display area, and the method further includes:

The length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data drive interface is used to obtain the preset value of the data line connected between each display area and the data drive circuit. Length data.
The display driving method according to claim 17, wherein the predetermined length is obtained by the length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data driving interface. The length data of the data line connected between each display partition and the data drive circuit includes:

When a certain display area includes at least two rows of pixel units, it is determined that the length of the data line connected between the data driving circuit and the display area is: each row of pixel units in the display area is connected to the data line The average value of the length between the connection point and the data drive interface corresponding to the data drive circuit.
The display driving method according to claim 17, wherein the predetermined length is obtained by the length between the connection point of at least one pixel unit in each display area connected to the data line and the corresponding data driving interface. The length data of the data line connected between each display partition and the data drive circuit includes:

When a certain display area includes at least two rows of pixel units, it is determined that the length of the data line connected between the data driving circuit and the display area is: any row of pixel units in the display area is connected to the data line The length between the connection point and the data drive interface corresponding to the data drive circuit.
15. The display driving method of claim 13, wherein the preset correspondence between the data voltage conduction distance and the scan voltage is a pre-stored correspondence table.