CN115631713A - Driving module and driving method thereof, display panel and display device - Google Patents
Driving module and driving method thereof, display panel and display device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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Abstract
The embodiment of the invention discloses a driving module, a driving method thereof, a display panel and a display device, wherein the driving module comprises a logic operation circuit, a gamma driving circuit and a source driving circuit; the logic operation circuit is respectively electrically connected with the control mainboard and the power chip and is used for determining power supply voltage according to the display demand signal output by the control mainboard and the analog reference voltage output by the power chip; the power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations; the gamma driving circuit is electrically connected with the logic operation circuit and is used for outputting a gray scale voltage group according to power supply voltage, and the gray scale voltage group comprises a plurality of gray scale voltages; the source driving circuit is respectively electrically connected with the control mainboard and the gamma driving circuit and is used for outputting data signals according to the display demand signals and the gray scale voltage groups. In the technical scheme provided by the embodiment of the invention, the logic operation circuit determines the power supply voltages of at least two groups of corresponding relations through the display demand signal and the analog reference voltage, so that the power consumption of the driving module is saved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a driving module, a driving method thereof, a display panel and a display device.
Background
With the continuous development of display technologies, display devices are more and more widely used, for example, products such as mobile phones, computers, tablet computers, electronic books, and the like, and in addition, the display devices can also be applied to instrument displays, control panels of smart homes, and the like.
In the conventional display device, there is a problem that power consumption is large in adjustment based on different display luminances.
Disclosure of Invention
The embodiment of the invention provides a driving module, a driving method thereof, a display panel and a display device, so as to realize the effect of low power consumption of the driving module.
In a first aspect, a driving module provided in an embodiment of the present invention includes a logic operation circuit, a gamma driving circuit, and a source driving circuit;
the logic operation circuit is respectively and electrically connected with the control mainboard and the power chip and is used for determining power voltage according to the display demand signal output by the control mainboard and the analog reference voltage output by the power chip; wherein the power supply voltage and the analog reference voltage comprise at least two different sets of corresponding relationships;
the gamma driving circuit is electrically connected with the logic operation circuit and is used for outputting a gray scale voltage group according to the power supply voltage, and the gray scale voltage group comprises a plurality of gray scale voltages;
the source driving circuit is respectively electrically connected with the control mainboard and the gamma driving circuit and is used for outputting data signals according to the display demand signals and the gray scale voltage groups.
In a second aspect, an embodiment of the present invention provides a driving method for a driving module, which is applied to the driving module in the first aspect, and the driving method includes:
acquiring display demand information and a reference voltage signal;
determining a corresponding relation between a power supply voltage and the reference voltage signal according to the display requirement information; the power supply voltage and the analog reference voltage comprise at least two different corresponding relations;
and outputting the power supply voltage to a gamma driving circuit so as to control the gamma driving circuit to output different gray scale voltage groups to a source driving circuit.
In a third aspect, an embodiment of the present invention provides a display panel, including a display area and a non-display area;
the display area comprises a plurality of data lines;
the non-display area includes the driving module of the first aspect, and the source driving circuit includes a plurality of data signal output terminals electrically connected to the data lines.
In a fourth aspect, an embodiment of the present invention provides a display device, including the display panel according to the first aspect.
The embodiment of the invention provides a driving module, which comprises a logic operation circuit, a gamma driving circuit and a source electrode driving circuit; the logic driving circuit is electrically connected with the control mainboard and is used for acquiring a display demand signal output by the control mainboard, and the logic driving circuit is also electrically connected with the power chip and is used for acquiring an analog reference voltage output by the power chip. The logic driving circuit drives the power supply voltage based on the display demand signal and the analog reference voltage, and the output power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations. Since the supply voltage is used for determining the gamma input voltage, and the larger the difference between the supply voltage and the gamma input voltage, the lower the driving efficiency of the driving module, in the embodiment of the present invention, at least two supply voltages are obtained according to the display requirement information, the larger supply voltage may be used for determining the larger gamma input voltage, and the smaller supply voltage may be used for determining the smaller gamma input voltage. So can guarantee that mains voltage produces gamma input voltage's efficiency higher, guarantee that drive module possesses higher drive efficiency, guarantee that drive module's whole consumption is less, guarantee to promote drive module's drive efficiency, reduce drive module's consumption. .
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below 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 the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a driving module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another driving module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another driving module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another driving module provided in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of another driving module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another driving module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another driving module according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a driving method of a driving module according to an embodiment of the present invention;
fig. 9 is a schematic diagram of another driving method of the driving module according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those steps or elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
Fig. 1 is a schematic structural diagram of a driving module according to an embodiment of the present invention, and referring to fig. 1, a driving module 10 according to an embodiment of the present invention includes a logic operation circuit 100, a gamma driving circuit 200, and a source driving circuit 300; the logic operation circuit 100 is electrically connected to the control motherboard 20 and the power chip 30, and is configured to determine a power voltage according to the display demand signal output by the control motherboard 20 and the analog reference voltage output by the power chip 30; the power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations; the gamma driving circuit 200 is electrically connected to the logic operation circuit 100, and is configured to output a gray scale voltage group according to a power voltage, where the gray scale voltage group includes a plurality of gray scale voltages; the source driving circuit 300 is electrically connected to the control main board 20 and the gamma driving circuit 200, respectively, and is configured to output a data signal according to the display requirement signal and the gray scale voltage group.
The driving module 10 is configured to drive a light emitting element in a display device to perform light emitting display, so as to ensure a display function of the display device, the embodiment of the present invention does not specifically limit the type of the light emitting element, for example, the light emitting element may be an organic light emitting diode, a micro light emitting diode, a liquid crystal type light emitting element, or an electrophoresis type light emitting element, and the embodiment of the present invention does not describe the display device and the light emitting element in the display device.
Further, the driving module 10 is electrically connected to the control main board 20 and the power chip 30, the control main board 20 can output a display demand signal to the driving module 10, the display demand signal can be a demand for a highlight display picture or a demand for a low-highlight display picture, and the display demand signal can be adaptively adjusted according to an actual display demand. The power supply chip 30 outputs the analog reference voltage VCI to the driving module 10. The driving module 10 outputs a data signal meeting the display signal requirement according to the acquired display requirement signal and the analog reference voltage VCI, and transmits the data signal to the light emitting element electrically connected to the driving module 10 to implement light emitting display of the light emitting element, that is, to complete the driving operation of the driving module 10.
Specifically, referring to fig. 1, the driving module 10 includes a logic operation circuit 100, wherein the logic operation circuit 100 is electrically connected to the control motherboard 20 and the power chip 30, respectively, that is, receives the display request signal and the analog reference voltage VCI, and determines the power voltage AVDD. It should be noted that the power supply voltage AVDD generated by the logic operation circuit 100 corresponds to the analog reference voltage VCI, for example, the power supply voltage AVDD is equal to p times the analog reference voltage VCI, that is, a voltage doubling relationship exists, where p is a positive number. Further, the power supply voltage AVDD generated by the logic operation circuit 100 according to the embodiment of the present invention and the analog reference voltage VCI include at least two different sets of corresponding relationships, that is, the generated power supply voltage AVDD and the analog reference voltage VCI have at least two voltage-multiplying relationships, for example, the power supply voltage AVDD generated by the logic operation circuit 100 includes a first power supply voltage AVDD1 and a second power supply voltage AVDD2, and the first power supply voltage AVDD1 is equal to 1 time of the analog reference voltage VCI, that is, the voltage-multiplying relationship thereof may be 1 time; the second power voltage AVDD2 is equal to 2 times the analog reference voltage VCI, that is, the voltage-multiplying relationship may be 2 times, or the voltage-multiplying relationship may further include other voltage-multiplying relationships, for example, 1.5 times, 2.3 times, or 4 times.
Specifically, the logic operation circuit 100 has a low dropout regulator LDO, and the low dropout regulator LDO receives the power supply voltage AVDD and outputs a gamma input voltage, which can be used as an input voltage of the subsequent gamma driving circuit 200. That is, the power supply voltage AVDD and the gamma input voltage are respectively the input signal and the output signal of the low dropout regulator LDO. Because the larger the voltage difference between the input end voltage and the output end voltage of the low dropout regulator LDO is, the lower the working efficiency of the low dropout regulator LDO is, and the gamma input voltage in different voltage ranges is the necessary working voltage for the display device to normally display, in order to ensure that the low dropout regulator LDO has a larger working efficiency, the difference between the input end information and the output end signal of the low dropout regulator LDO can be set to be smaller. Therefore, in the embodiment of the present invention, the supply voltage AVDD and the analog reference voltage VCI are set to include at least two different sets of corresponding relationships, that is, at least two supply voltages AVDD are obtained according to the display requirement information, the larger supply voltage AVDD may be used to determine the larger gamma input voltage, and the smaller supply voltage AVDD may be used to determine the smaller gamma input voltage. So guarantee satisfying under the condition that normally shows the demand, guarantee that low dropout linear regulator LDO possesses great work efficiency, guarantee that drive module 20 possesses higher drive efficiency, guarantee that drive module 20's whole consumption is less, guarantee to promote drive module 20's drive efficiency, reduce drive module 20's consumption.
Further, referring to fig. 1, the driving module 10 further includes a gamma driving circuit 200, the gamma driving circuit 200 is electrically connected to the logic operation circuit 100, and is configured to convert the power supply voltage AVDD output by the logic operation circuit 100 into a gray scale voltage group, and the gray scale voltage group includes a plurality of gray scale voltages, and is configured to implement display driving with multiple luminances. It should be noted that the power supply voltage AVDD output by the logic operation circuit 100 and the reference analog reference voltage VCI include at least two different corresponding relationships, that is, the logic operation circuit 100 outputs at least two power supply voltages AVDD, the gamma driving circuit 200 outputs different gray scale voltage sets under different power supply voltages AVDD, and a plurality of gray scale voltage sets generated by a plurality of power supply voltages AVDD form all gray scale voltages meeting display requirements, thereby implementing display driving of the driving module 10 with multiple luminances. The gray scale is a gradation level representing a degree of light emission, i.e., different brightness from the darkest to the brightest. The different gray levels have corresponding gray level voltages, which is not specifically limited in the embodiment of the present invention.
Further, referring to fig. 1, the driving module 10 further includes a source driving circuit 300, the source driving circuit 300 is electrically connected to the gamma driving circuit 200 and the control main board 20, respectively, the source driving circuit 300 outputs a data signal according to the gray scale voltage group and the display requirement signal, and further transmits the data signal to the light emitting element in the display device, so that the driving module 10 drives the light emitting element 200 to display.
To sum up, in the driving module provided in the embodiment of the present invention, at least two corresponding relationships between the power supply voltage and the analog reference voltage capacitor are determined according to the display requirement information, that is, at least two power supply voltages are obtained, a larger power supply voltage can be used to determine a larger gamma input voltage so as to obtain a larger gray scale voltage, and a smaller power supply voltage can be used to determine a smaller gamma input voltage so as to obtain a smaller gray scale voltage. So when guaranteeing to satisfy normal demonstration demand, can guarantee that supply voltage produces gamma input voltage's efficiency is higher, guarantees that drive module possesses higher drive efficiency, guarantees that drive module's whole consumption is less, guarantees to promote drive module's drive efficiency, reduces drive module's consumption.
FIG. 2 is a schematic diagram of another driving module according to an embodiment of the present invention, and referring to FIG. 2, a gamma driving circuit 200 includes at least two sub-gamma driving circuits; the at least two sub-gamma driving circuits include a first sub-gamma driving circuit 210 and a second sub-gamma driving circuit 220; the first sub-gamma driving circuit 210 is configured to output a first gray scale voltage group according to a first power voltage AVDD1, where the first power voltage AVDD1 and the analog reference voltage VCI satisfy AVDD1= a × VCI, and the first gray scale voltage group includes a plurality of first gray scale voltages; the second sub-gamma driving circuit 220 is configured to output a second gray scale voltage group according to a second power voltage AVDD2, where the second power voltage AVDD2 and the analog reference voltage VCI satisfy AVDD1= b × VCI, and the second gray scale voltage group includes a plurality of second gray scale voltages; wherein 0-a-b, and the first gray scale voltage is less than the second gray scale voltage.
Referring to fig. 2, the gamma driving circuit 200 includes at least two sub-gamma driving circuits, which respectively receive different power voltages AVDD output by the logic operation circuit 100 and output corresponding gray scale voltage groups.
Specifically, the power supply voltage AVDD output by the logic operation circuit 100 includes a first power supply voltage AVDD1 and a second power supply voltage AVDD2, where the first power supply voltage AVDD1 and the analog reference voltage VCI satisfy AVDD1= a × VCI, that is, the first power supply voltage AVDD1 and the analog reference voltage VCI satisfy a voltage-multiplying relationship, a is a voltage-multiplying coefficient, the second power supply voltage AVDD2 and the analog reference voltage VCI satisfy AVDD1= b × VCI, that is, the second power supply voltage AVDD2 and the analog reference voltage VCI satisfy b voltage-multiplying relationship, and b is a voltage-multiplying coefficient. And 0 s are woven from yarn-woven fabric (a) or yarn-woven fabric (b), i.e., the voltage multiplying factor of the second power supply voltage AVDD2 and the analog reference voltage VCI is larger than the voltage multiplying factor of the first power supply voltage AVDD1 and the analog reference voltage VCI. Correspondingly, the sub-gamma driving circuit includes a first sub-gamma driving circuit 210 and a second sub-gamma driving circuit 220, the first sub-gamma driving circuit 210 is configured to output a first gray scale voltage group according to a first power voltage AVDD1, the first gray scale voltage group includes a plurality of first gray scale voltages, the second sub-gamma driving circuit 220 is configured to output a second gray scale voltage group according to a first power voltage AVDD2, the second gray scale voltage group includes a plurality of second gray scale voltages. According to the corresponding relation between the driving current and the gray scale voltage, the larger the gray scale voltage is, the smaller the driving current is, and the smaller the display brightness is. That is, the first sub-gamma driving circuit 210 is used for generating a low gray scale voltage according to the first power voltage AVDD1 when a high display brightness display requirement is required, and the second sub-gamma driving circuit 220 is used for generating a high gray scale voltage according to the second power voltage AVDD2 when a low display brightness display requirement is required.
Further, different power supply voltages are determined according to different display requirements, different sub-gamma driving circuits are further set to correspondingly obtain different gray scale voltage groups, it is guaranteed that the driving module 10 can be driven under different display requirements without switching the gamma driving circuit 200, and the working effect of the driving module 10 is further guaranteed. Moreover, different sub-gamma driving circuits can be set differently according to different display requirements and different power supply voltages AVDD, for example, different numbers of gray scale voltages can be included in gray scale voltage groups generated by different sub-gamma driving circuits, so as to ensure display effects under different display requirements.
It should be noted that the set number of the sub-gamma driving circuits may be the same as the number of the power supply voltages AVDD, so that each sub-gamma driving circuit may generate a gray scale voltage group matched with the power supply voltage AVDD according to the input power supply voltage AVDD, thereby implementing different display requirements.
Fig. 3 is a schematic structural diagram of another driving module according to an embodiment of the invention, and referring to fig. 3, the first sub-gamma driving circuit 210 includes a first gamma voltage regulating unit 211, a first reference gamma voltage generating unit 212, and a first gray scale voltage generating unit 213; the first gamma voltage adjusting unit 211 is electrically connected to the logic operation circuit 100, and determines a first gamma input voltage according to a first power supply voltage; the first gamma input voltage includes a first high level gamma input voltage and a first low level gamma input voltage; the first reference gamma voltage generating unit 212 is electrically connected to the first gamma voltage adjusting unit 211, for determining a first reference gamma voltage according to the first gamma input voltage; the first gray scale voltage generating unit 213 is electrically connected to the first reference gamma voltage generating unit 212, and configured to generate a first gray scale voltage group according to the first reference gamma voltage; the second sub-gamma driving circuit 220 includes a second gamma voltage adjusting unit 221, a second reference gamma voltage generating unit 222, and a second gray scale voltage generating unit 223; the second gamma voltage adjusting unit 221 is electrically connected to the logic operation circuit 100, and determines a second gamma input voltage according to a second power supply voltage; the second gamma input voltage includes a second high level gamma input voltage and a second low level gamma input voltage; the second reference gamma voltage generating unit 222 is electrically connected to the second gamma voltage adjusting unit 221, and determines a second reference gamma voltage according to a second gamma input voltage; the second gray scale voltage generating unit 223 is electrically connected to the second reference gamma voltage generating unit 222, and is configured to generate a second gray scale voltage group according to the second reference gamma voltage; the second high level gamma input voltage is greater than the first high level gamma input voltage, and the second low level gamma input voltage is greater than the first low level gamma input voltage.
As shown in fig. 3, the first sub-gamma driving circuit 210 includes a first gamma voltage adjusting unit 211, a first reference gamma voltage generating unit 212, and a first gray scale voltage generating unit 213, and specifically, the connection relationship is as follows: the first gamma voltage adjusting unit 211 is electrically connected to the logic operation circuit 100, the first reference gamma voltage generating unit 212 is electrically connected to the first gamma voltage adjusting unit 211, and the first gray scale voltage generating unit 213 is electrically connected to the first gray scale voltage generating unit 213. Through the above connection relationship, the first sub-gamma driving circuit 210 may generate the first gray scale voltage group according to the first power voltage AVDD 1. Similarly, the second sub-gamma driving circuit 220 includes a second gamma voltage adjusting unit 221, a second reference gamma voltage generating unit 222, and a second gray scale voltage generating unit 223, and specifically, the connection relationship is: the second gamma voltage adjusting unit 221 is electrically connected to the logical operation circuit 100, the second reference gamma voltage generating unit 222 is electrically connected to the second gamma voltage adjusting unit 221, and the second gradation voltage generating unit 223 is electrically connected to the second gradation voltage generating unit 223. Through the above connection relationship, the second sub-gamma driving circuit 220 may generate the second gray scale voltage group according to the second power supply voltage AVDD 2.
In the first sub-gamma driving circuit 210, the first gamma voltage adjusting unit 211 receives the first power voltage AVDD1 and determines the first gamma input voltage according to the first power voltage AVDD 1. Illustratively, the first gamma voltage regulating unit 211 may be a first low dropout linear regulator LDO1. That is, the first power supply voltage AVDD1 and the first gamma input are input into the input signal and the output signal of the first low dropout regulator LDO1. Further, the first gamma input voltage includes a first high level gamma input voltage VGMP1 and a first low level gamma input voltage VGSP1, i.e., a range of the first gamma input voltage is determined by the first high level gamma input voltage VGMP1 and the first low level gamma input voltage VGSP 1. Further, the first reference gamma voltage generating unit 212 determines a first reference gamma voltage according to the first gamma input voltage, and the first gray scale voltage generating unit 213 generates a first gray scale voltage group according to the first reference gamma voltage.
Similarly, in the second sub-gamma driving circuit 220, the second gamma voltage adjusting unit 221 receives the second power voltage AVDD2 and determines the second gamma input voltage according to the second power voltage AVDD 2. Illustratively, the second gamma voltage regulating unit 211 may also be a second low dropout linear regulator LDO2. That is, the second power supply voltage AVDD2 and the second gamma input are input into the input signal and the output signal of the second low dropout regulator LDO2. Further, the second gamma input voltages include a second high level gamma input voltage VGMP2 and a second low level gamma input voltage VGSP2, i.e., a range of the second gamma input voltages is determined by the second high level gamma input voltage VGMP2 and the second low level gamma input voltage VGSP 2. Based on the difference between the voltage-multiplying relationship between the first and second power supply voltages AVDD1 and AVDD2 and the analog reference voltage VCI, the determined first and second gamma input voltages are also different. Specifically, in a voltage-multiplying relationship where the first power voltage AVDD1 is smaller than the second power voltage AVDD2, the first low-level gamma input voltage VGSP1 is smaller than the second low-level gamma input voltage VGSP2, and the first high-level gamma input voltage VGMP1 is smaller than the second high-level gamma input voltage VGMP2. Further, the second reference gamma voltage generating unit 222 determines a second reference gamma voltage according to the second gamma input voltage, and the second gray scale voltage generating unit 223 generates a second gray scale voltage group according to the second reference gamma voltage. By setting the first power supply voltage AVDD1 and the second power supply voltage AVDD2 that include at least two different sets of corresponding relationships with the analog reference voltage VCI, the larger power supply voltage AVDD, i.e., the second power supply voltage AVDD2, may be used to determine the larger gamma input voltage, and the smaller power supply voltage AVDD, i.e., the first power supply voltage AVDD1, may be used to determine the smaller gamma input voltage. So guarantee satisfying under the condition that normally shows the demand, guarantee that low dropout linear regulator LDO possesses great work efficiency, guarantee that drive module 20 possesses higher drive efficiency, guarantee that drive module 20's whole consumption is less, guarantee to promote drive module 20's drive efficiency, reduce drive module 20's consumption.
Fig. 4 is a schematic structural diagram of another driving module according to an embodiment of the invention, and referring to fig. 4, the first grayscale voltage generating unit 213 includes a plurality of first voltage-dividing resistors 213A, a number of the first voltage-dividing resistors 213A is greater than a number of the first grayscale voltages; the second gray scale voltage generating unit 223 includes a plurality of second voltage dividing resistors 223A, and the number of the second voltage dividing resistors 223A is greater than the number of the second gray scale voltages.
Specifically, the first gray-scale voltage generating unit 213 includes a plurality of first voltage dividing resistors 213A, and the second gray-scale voltage generating unit 223 includes a plurality of second voltage dividing resistors 223A. In the first sub-gamma driving circuit 210, the first gray-scale voltage generating unit 213 inputs into the plurality of first voltage dividing resistors 213A according to the first reference gamma voltage, generates a plurality of gray-scale voltages, and composes a first gray-scale voltage group. For example, referring to fig. 4, the plurality of first voltage-dividing resistors 213A may be independently disposed, and different first voltage-dividing resistors 213A may obtain different gray-scale voltages based on the first reference gamma voltage. Alternatively, the plurality of first voltage-dividing resistors 213A may be serially connected to form a first voltage-dividing string, and the first reference gamma voltages may obtain different gray-scale voltages after passing through different numbers of first voltage-dividing resistors 213A in the first voltage-dividing string. The connection manner and the number of the first voltage dividing resistors 213A are not specifically limited in the embodiment of the present invention. Similarly, in the second sub-gamma driving circuit 220, the second gray scale voltage generating unit 223 generates a plurality of gray scale voltages according to the second reference gamma voltage input to the plurality of second voltage dividing resistors 223A, and constitutes a second gray scale voltage group. For example, referring to fig. 4, the plurality of second voltage-dividing resistors 223A may be independently arranged, and different second voltage-dividing resistors 223A may obtain different gray-scale voltages based on the second reference gamma voltage. Alternatively, a plurality of second voltage dividing resistors 223A may be serially connected to form a second voltage dividing string, and the second reference gamma voltage may obtain different gray scale voltages after passing through different numbers of second voltage dividing resistors 223A in the second voltage dividing string. The embodiment of the present invention does not specifically limit the connection manner and the number of the second voltage-dividing resistors 223A.
Further, in order to satisfy the refined display effect, the requirement under different display requirements has a sufficient number of gray scale voltages, taking an 8-byte display panel as an example, the display panel has 256 display gray scales, that is, 256 gray scale voltages are required, for example, the highlight display requirement corresponds to 128 display gray scales, that is, 128 gray scale voltages, and the low highlight display requirement corresponds to 128 display gray scales, that is, 128 gray scale voltages. In order to ensure the display effect under different display requirements, the number of the first voltage-dividing resistor 213A and the second voltage-dividing resistor 223A may be set to be sufficient, so as to ensure that a sufficient number of gray scale voltages are generated, and the requirements of the gray scale voltages under different display requirements are met. That is, the number of the first voltage dividing resistors 213A is greater than the number of the first gray scale voltages, and the number of the second voltage dividing resistors 223A is greater than the number of the second gray scale voltages, so as to achieve the display effect of the driving module 10 under different display requirements.
As shown in fig. 4, the first gray-scale voltage generating unit 213 includes a plurality of first dividing resistors 213A, and the second gray-scale voltage generating unit 223 includes a plurality of second dividing resistors 223A; wherein, the number of the second voltage dividing resistors 223A is larger than the number of the first voltage dividing resistors 213A.
When the voltage-multiplying coefficient of the second power voltage AVDD2 is greater than the voltage-multiplying coefficient of the first power voltage AVDD1, the gray scale output by the second sub-gamma driving circuit 220 according to the second power voltage AVDD2 corresponds to a high gray scale voltage, i.e., low display luminance, and the gray scale output by the first sub-gamma driving circuit 210 according to the first power voltage AVDD1 corresponds to a low gray scale voltage, i.e., high display luminance.
Specifically, the gray scale voltage generated by the second gray scale voltage generating unit 223 in the second sub-gamma driving circuit 220 is larger than the gray scale voltage generated by the first gray scale voltage generating unit 213 in the first sub-gamma driving circuit 210, that is, the number of the second voltage dividing resistors 223A in the second gray scale voltage generating unit 223 may be increased to ensure better and finer voltage dividing effect under the large gray scale voltage generated by the second sub-gamma driving circuit 220. In contrast, the number of the second voltage dividing resistors 223A is greater than the number of the first voltage dividing resistors 213A, so as to ensure the driving effect of the driving module 10 at the low display gray scale.
Fig. 5 is a schematic structural diagram of another driving module according to an embodiment of the invention, and referring to fig. 5, the first sub-gamma driving circuit 210 further includes a first gamma register unit 214, and the first gamma register unit 214 is electrically connected to the first gray scale voltage generating unit 213; the first gamma registering unit 214 is configured to output the modulated first gray scale modulation voltage to the first gray scale voltage generating unit 213, and the first gray scale voltage generating unit 213 is configured to output a first gray scale voltage group to the source driving circuit 300 according to the first gray scale modulation voltage; the second sub-gamma driving circuit 220 further includes a second gamma registering unit 224, the second gamma registering unit 224 being electrically connected to the second gray scale voltage generating unit 223; the second gamma register unit 224 is configured to output the modulated second gray scale modulation voltage to the second gray scale voltage generating unit 223, and the second gray scale voltage generating unit 223 is configured to output a second gray scale voltage group to the source driving circuit 300 according to the second gray scale modulation voltage.
Wherein, gamma drive circuit 200 still includes gamma registering unit, and gamma registering unit is used for modulating grey scale voltage, guarantees the accuracy of the grey scale voltage of drive module 10 output, the better demonstration demand that satisfies. Specifically, in the first sub-gamma driving circuit 210, the first gamma registering unit 214 is included, and in the second sub-gamma driving circuit 220, the second gamma registering unit 224 is included, as shown in fig. 6, in the first sub-gamma driving circuit 210, the first gamma registering unit 214 is electrically connected to the first gray scale voltage generating unit 213, the first gamma registering unit 214 is configured to modulate the first gray scale voltage generated by the first gray scale voltage generating unit 213, and transmit the modulated first gray scale modulation voltage to the first gray scale voltage generating unit 213, and the first gray scale voltage generating unit 213 then transmits the first gray scale modulation voltage modulated by the first gamma registering unit 214 to the source driving circuit 300, so as to ensure that the output first gray scale voltage group better conforms to the display requirement signal, and ensure the display driving effect of the driving module 10. Similarly, in the second sub-gamma driving circuit 220, the second gamma register unit 224 is electrically connected to the second gray scale voltage generating unit 223, the second gamma register unit 224 is configured to modulate the second gray scale voltage generated by the second gray scale voltage generating unit 223, and transmit the modulated second gray scale modulation voltage to the second gray scale voltage generating unit 223, and the second gray scale voltage generating unit 223 transmits the second gray scale modulation voltage modulated by the second gamma register unit 224 to the source driving circuit 300, so as to ensure that the output second gray scale voltage group better conforms to the display requirement signal, and in combination with the first gamma register unit 214 and the second gamma register unit 224, the driving effect of the driving module 10 can be better ensured as a whole.
Fig. 6 is a schematic structural diagram of another driving module according to an embodiment of the present invention, fig. 7 is a schematic structural diagram of another driving module according to an embodiment of the present invention, and referring to fig. 6 and 7, the at least two sub-gamma driving circuits further include a third sub-gamma driving circuit 230 and a second sub-gamma driving circuit 220; the third sub-gamma driving circuit 230 includes a third power voltage AVDD3 and a third gray scale voltage group, the third power voltage AVDD3 and the analog reference voltage VCI satisfy AVDD1= c × VCI, and the third gray scale voltage group includes a plurality of third gray scale voltages; wherein 0-a-b-c and third gray scale voltage is greater than second gray scale voltage.
Specifically, the logic operation circuit 100 may output a power supply voltage AVDD having a plurality of voltage multiplication relationships with the reference analog reference voltage VCI, and different power supply voltages AVDD are transmitted to different sub-gamma driving circuits. Referring to fig. 2, taking the first power voltage AVDD1 and the second power voltage AVDD2 of two voltage-multiplying relationships output by the logic operation circuit 100 as an example, based on the two power voltages AVDD, the gamma driving circuit 200 includes the first sub-gamma driving circuit 210 and the second sub-gamma driving circuit 220, so as to ensure that the driving module 10 can be switched under different display requirements without switching the gamma driving circuit 200, and can perform differential setting on different sub-gamma driving circuits according to different display requirements and different power voltages AVDD, for example, gray scale voltage groups generated by different sub-gamma driving circuits may include different numbers of gray scale voltages, so as to further ensure the working effect of the driving module 10. To further realize the more refined division and control of the power supply voltage AVDD, referring to fig. 6, the logic operation circuit 100 may output a first power supply voltage AVDD1, a second power supply voltage AVDD2, and a third power supply voltage AVDD3 in three voltage-multiplying relationships, based on that the third power supply voltage AVDD3 and the analog reference voltage VCI satisfy the relationship of AVDD1= c × VCI, that is, the third power supply voltage AVDD3 and the analog reference voltage VCI satisfy the relationship of c voltage-multiplying, and c is a voltage-multiplying coefficient. And 0-a-b-c, i.e., the voltage-multiplying coefficient of the second power supply voltage AVDD2 and the analog reference voltage VCI is greater than the voltage-multiplying coefficient of the first power supply voltage AVDD1 and the analog reference voltage VCI, and the voltage-multiplying coefficient of the third power supply voltage AVDD3 and the analog reference voltage VCI is greater than the voltage-multiplying coefficient of the second power supply voltage AVDD2 and the analog reference voltage VCI. The gamma driving circuit 200 outputs different gray scale voltages based on different power supply voltages AVDD, so as to further ensure the driving effect of the driving module 10 under different display requirements.
For example, referring to fig. 7, the logic operation circuit 100 may output a three-supply voltage AVDD having a voltage-multiplying relationship, where n may be any positive integer greater than 1, which is not specifically limited in the embodiment of the present invention.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of a driving module, and fig. 8 is a schematic diagram of the driving method of the driving module provided in the embodiment of the present invention, where the driving method includes:
and S110, acquiring display requirement information and a reference voltage signal.
The driving module is configured to drive the light emitting element in the display device to perform light emitting display, so as to ensure a display function of the display device, the embodiment of the present invention does not specifically limit the type of the light emitting element, for example, the light emitting element may be an organic light emitting diode, a micro diode, a liquid crystal type light emitting element, or an electrophoresis type light emitting element, and the embodiments of the present invention do not describe the display device and the light emitting element in the display device.
Furthermore, the driving module is respectively electrically connected with the control main board and the power chip, the control main board can output a display demand signal to the driving module, the display demand signal can be the requirement of a highlight display picture or the requirement of a low-highlight display picture, and the display demand signal can be adjusted adaptively according to the actual display demand. The power supply chip outputs the analog reference voltage VCI to the driving module. The driving module outputs a data signal meeting the display signal requirement according to the acquired display requirement signal and the analog reference voltage VCI, and transmits the data signal to the light-emitting element electrically connected with the driving module to realize the light-emitting display of the light-emitting element, namely, to complete the driving work of the driving module.
S120, determining the corresponding relation between the power supply voltage and the reference voltage signal according to the display requirement information; the power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations.
Further, the driving module comprises a logic operation circuit, wherein the logic operation circuit is respectively electrically connected with the control mainboard and the power supply chip, namely receives the display demand signal and the analog reference voltage VCI, and determines the power supply voltage AVDD. It should be noted that, the power supply voltage AVDD generated by the logic operation circuit has a corresponding relationship with the analog reference voltage VCI, for example, the power supply voltage AVDD is equal to p times the analog reference voltage VCI, i.e., a voltage doubling relationship exists, where p is a positive number. Further, the power supply voltage AVDD generated by the logic operation circuit according to the embodiment of the present invention and the analog reference voltage VCI include at least two different sets of corresponding relationships, that is, the generated power supply voltage AVDD and the analog reference voltage VCI have at least two voltage-multiplying relationships, for example, the power supply voltage AVDD generated by the logic operation circuit includes a first power supply voltage AVDD1 and a second power supply voltage AVDD2, and the first power supply voltage AVDD1 is equal to 1 time of the analog reference voltage VCI, that is, the voltage-multiplying relationship thereof may be 1 time; the second power supply voltage AVDD2 is equal to 2 times the analog reference voltage VCI, i.e., the voltage doubling relationship may be 2 times, or the voltage doubling relationship may further include other voltage doubling relationships, for example, 1.5 times, 2.3 times, or 4 times, which is not limited by the specific values in the embodiment of the present invention. Furthermore, a low dropout regulator (LDO) exists in the logic operation circuit, the LDO receives the power voltage AVDD and outputs a gamma input voltage, and the gamma input voltage can be used as an input voltage of a subsequent gamma driving circuit. That is, the power supply voltage AVDD and the gamma input voltage are respectively the input signal and the output signal of the low dropout regulator LDO. Because the larger the voltage difference between the input end voltage and the output end voltage of the low dropout regulator LDO is, the lower the working efficiency of the low dropout regulator LDO is, and the gamma input voltage in different voltage ranges is the necessary working voltage for the display device to normally display, in order to ensure that the low dropout regulator LDO has a larger working efficiency, the difference between the input end information and the output end signal of the low dropout regulator LDO can be set to be smaller. Therefore, in the embodiment of the present invention, the power supply voltage AVDD and the analog reference voltage VCI are set to include at least two different sets of corresponding relationships, that is, at least two power supply voltages AVDD are obtained according to the display requirement information, the larger power supply voltage AVDD may be used to determine the larger gamma input voltage, and the smaller power supply voltage AVDD may be used to determine the smaller gamma input voltage. So guarantee satisfying under the condition that normally shows the demand, guarantee that low dropout linear regulator LDO possesses great work efficiency, guarantee that drive module possesses higher drive efficiency, guarantee that drive module's whole consumption is less, guarantee to promote drive module's drive efficiency, reduce drive module's consumption. .
S130, outputting the power voltage to the gamma driving circuit to control the gamma driving circuit to output different gray scale voltage groups to the source driving circuit.
Furthermore, the driving module further comprises a gamma driving circuit, the gamma driving circuit is electrically connected with the logic operation circuit and is used for converting the power supply voltage AVDD output by the logic operation circuit into a gray scale voltage group, and the gray scale voltage group comprises a plurality of gray scale voltages and is used for realizing display driving of various luminances. It should be noted that the power supply voltage AVDD output by the logic operation circuit and the reference analog reference voltage VCI include at least two different corresponding relationships, that is, the logic operation circuit outputs at least two power supply voltages AVDD, the gamma driving circuit outputs different gray scale voltage sets under different power supply voltages AVDD, and a plurality of gray scale voltage sets generated by the plurality of power supply voltages AVDD form all gray scale voltages meeting display requirements, thereby realizing display driving of the driving module with multiple luminances. The gray scale is a gradation level representing a degree of light emission, i.e., different brightness from the darkest to the brightest. The different gray levels have corresponding gray level voltages, which is not specifically limited in the embodiment of the present invention. Furthermore, the driving module further comprises a source driving circuit, the source driving circuit is respectively electrically connected with the gamma driving circuit and the control main board, the source driving circuit outputs data signals according to the gray scale voltage group and the display demand signals, and further transmits the data signals to the light-emitting elements in the display device, so that the driving module drives the light-emitting elements to display.
To sum up, in the driving method of the driving module according to the embodiment of the present invention, at least two corresponding relationships between the power supply voltage and the analog reference voltage capacitor are determined according to the display requirement information, that is, at least two power supply voltages are obtained, a larger power supply voltage can be used to determine a larger gamma input voltage so as to obtain a larger gamma reference voltage, and a smaller power supply voltage can be used to determine a smaller gamma input voltage so as to obtain a smaller gamma reference voltage. So when guaranteeing to satisfy normal demonstration demand, can guarantee that supply voltage produces gamma input voltage's efficiency is higher, guarantees that drive module possesses higher drive efficiency, guarantees that drive module's whole consumption is less, guarantees to promote drive module's drive efficiency, reduces drive module's consumption. .
Further, fig. 9 is a schematic diagram of another driving method of a driving module according to an embodiment of the present invention, and referring to fig. 9, the driving method further includes:
and S210, acquiring display requirement information and a reference voltage signal.
S220, determining the corresponding relation between the power supply voltage and the reference voltage signal according to the display requirement information; the power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations.
S230, outputting different power voltages to different sub-gamma driving circuits to control the different sub-gamma driving circuits to output different gray scale voltage sets to the source driving circuit.
Illustratively, the supply voltage AVDD output by the logic operation circuit includes a first supply voltage AVDD1 and a second supply voltage AVDD2, where the first supply voltage AVDD1 and the analog reference voltage VCI may satisfy AVDD1= a × VCI, that is, the first supply voltage AVDD1 and the analog reference voltage VCI satisfy a voltage-multiplying relationship, a is a voltage-multiplying coefficient, the second supply voltage AVDD2 and the analog reference voltage VCI may satisfy AVDD1= b × VCI, that is, the second supply voltage AVDD2 and the analog reference voltage VCI satisfy b voltage-multiplying relationship, and b is a voltage-multiplying coefficient. And 0 s are woven from yarn-woven fabric (a) or yarn-woven fabric (b), i.e., the voltage multiplying factor of the second power supply voltage AVDD2 and the analog reference voltage VCI is larger than the voltage multiplying factor of the first power supply voltage AVDD1 and the analog reference voltage VCI.
Correspondingly, the sub-gamma driving circuit comprises a first sub-gamma driving circuit and a second sub-gamma driving circuit, the first sub-gamma driving circuit is used for outputting a first gray scale voltage group according to a first power voltage AVDD1, the first gray scale voltage group comprises a plurality of first gray scale voltages, the second sub-gamma driving circuit is used for outputting a second gray scale voltage group according to a first power voltage AVDD2, and the second gray scale voltage group comprises a plurality of second gray scale voltages. According to the corresponding relationship between the driving current and the gray scale voltage, it can be known that the larger the gray scale voltage is, the smaller the driving current is, and the smaller the display brightness is. Namely, the first sub-gamma driving circuit is used for generating a low gray scale voltage according to the first power voltage AVDD1 when the display requirement of high display brightness is required, and the second sub-gamma driving circuit is used for generating a high gray scale voltage according to the second power voltage AVDD2 when the display requirement of low display brightness is required.
Furthermore, different power supply voltages are determined according to different display requirements, different sub-gamma driving circuits are further arranged to correspondingly obtain different gray scale voltage groups, it is guaranteed that the driving module can be switched without switching the gamma driving circuits under different display requirements, and the working effect of the driving module is further guaranteed. Moreover, different sub-gamma driving circuits can be set differently according to different display requirements and different power supply voltages AVDD, for example, different numbers of gray scale voltages can be included in gray scale voltage groups generated by different sub-gamma driving circuits, so as to ensure display effects under different display requirements.
It should be noted that the set number of the sub-gamma driving circuits may be the same as the number of the power supply voltage AVDD, so that each sub-gamma driving circuit may generate a gray scale voltage group matched with the power supply voltage AVDD according to the input power supply voltage AVDD, thereby implementing different display requirements.
In conclusion, different power supply voltages are output to different sub-gamma driving circuits, so that the driving module is ensured to be capable of switching the gamma driving circuits under different display requirements, and the working effect of the driving module is further ensured.
Based on the same inventive concept, an embodiment of the present invention further provides a display panel, fig. 10 is a schematic structural diagram of the display panel provided in the embodiment of the present invention, as shown in fig. 10, the display panel 1 includes a display area 410 and a non-display area 420, the display area 410 includes a plurality of data lines 430; the non-display region 420 includes the driving module 10, and the source driving circuit includes a plurality of data signal output terminals 440, and the data signal output terminals 440 are electrically connected to the data lines 430.
Referring to fig. 10, the display panel 1 includes a display area 410 and a non-display area 420, and includes a plurality of light emitting elements 450 and data lines 430 connected to the light emitting elements 450 in the display area 41 for implementing a display function of the display panel 10. The non-display region 420 includes therein a driving module 10 electrically connected to a data line 430, and the data line 430 is electrically connected to a data signal output terminal 440 of a source driving circuit in the driving module 10. The driving module 10 provides a display signal to drive the display panel 1 to realize a display function.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, and fig. 11 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and as shown in fig. 11, the display device 2 includes the display panel 1 according to any embodiment of the present invention, so that the display device 2 provided in the embodiment of the present invention has the technical effects of the technical solutions in any embodiment, and explanations of structures and terms that are the same as or corresponding to the embodiments are not repeated herein.
The display device 2 provided by the embodiment of the present invention may be a mobile phone shown in fig. 11, and may also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (11)
1. A drive module is characterized by comprising a logic operation circuit, a gamma drive circuit and a source drive circuit;
the logic operation circuit is respectively electrically connected with the control mainboard and the power supply chip and is used for determining the power supply voltage according to the display demand signal output by the control mainboard and the analog reference voltage output by the power supply chip; wherein the power supply voltage and the analog reference voltage comprise at least two different sets of corresponding relationships;
the gamma driving circuit is electrically connected with the logic operation circuit and is used for outputting a gray scale voltage group according to the power supply voltage, and the gray scale voltage group comprises a plurality of gray scale voltages;
the source driving circuit is respectively electrically connected with the control main board and the gamma driving circuit and is used for outputting data signals according to the display demand signals and the gray scale voltage groups.
2. The driving module of claim 1, wherein the gamma driving circuit comprises at least two sub-gamma driving circuits; at least two of the sub-gamma driving circuits include a first sub-gamma driving circuit and a second sub-gamma driving circuit;
the first sub-gamma driving circuit is configured to output a first gray scale voltage group according to a first power supply voltage AVDD1, where the first power supply voltage AVDD1 and the analog reference voltage VCI satisfy AVDD1= a × VCI, and the first gray scale voltage group includes a plurality of first gray scale voltages;
the second sub-gamma driving circuit is configured to output a second gray scale voltage group according to a second power supply voltage AVDD2, where the second power supply voltage AVDD2 and the analog reference voltage VCI satisfy AVDD1= b × VCI, and the second gray scale voltage group includes a plurality of second gray scale voltages;
wherein 0-straw a-straw b, the first gray scale voltage is less than the second gray scale voltage.
3. The driving module of claim 2, wherein the first sub-gamma driving circuit comprises a first gamma voltage adjusting unit, a first reference gamma voltage generating unit, and a first gray scale voltage generating unit;
the first gamma voltage regulating unit is electrically connected with the logic operation circuit and is used for determining a first gamma input voltage according to the first power supply voltage; the first gamma input voltages include first high level gamma input voltages and first low level gamma input voltages;
the first reference gamma voltage generating unit is electrically connected with the first gamma voltage regulating unit and is used for determining a first reference gamma voltage according to the first gamma input voltage;
the first gray scale voltage generation unit is electrically connected with the first reference gamma voltage generation unit and is used for generating the first gray scale voltage group according to the first reference gamma voltage;
the second sub-gamma driving circuit includes a second gamma voltage adjusting unit, a second reference gamma voltage generating unit, and a second gray scale voltage generating unit;
the second gamma voltage regulating unit is electrically connected with the logic operation circuit and is used for determining a second gamma input voltage according to the second power supply voltage; the second gamma input voltages include a second high level gamma input voltage and a second low level gamma input voltage;
the second reference gamma voltage generating unit is electrically connected with the second gamma voltage regulating unit and used for determining a second reference gamma voltage according to the second gamma input voltage;
the second gray scale voltage generation unit is electrically connected with the second reference gamma voltage generation unit and is used for generating the second gray scale voltage group according to the second reference gamma voltage;
wherein the second high level gamma input voltage is greater than the first high level gamma input voltage, and the second low level gamma input voltage is greater than the first low level gamma input voltage.
4. The driving module according to claim 3, wherein the first gray scale voltage generating unit includes a plurality of first dividing resistors, the number of the first dividing resistors being greater than the number of the first gray scale voltages;
the second gray scale voltage generating unit includes a plurality of second voltage dividing resistors, and the number of the second voltage dividing resistors is greater than the number of the second gray scale voltages.
5. The driving module according to claim 3, wherein the first grayscale voltage generating unit includes a plurality of first voltage-dividing resistors, and the second grayscale voltage generating unit includes a plurality of second voltage-dividing resistors;
wherein the number of the second voltage-dividing resistors is greater than the number of the first voltage-dividing resistors.
6. The driving module of claim 3, wherein the first sub-gamma driving circuit further comprises a first gamma registering unit electrically connected to the first gray scale voltage generating unit;
the first gamma registering unit is used for outputting a modulated first gray scale modulation voltage to the first gray scale voltage generating unit, and the first gray scale voltage generating unit is used for outputting a first gray scale voltage group to the source driving circuit according to the first gray scale modulation voltage;
the second sub-gamma driving circuit further comprises a second gamma registering unit which is electrically connected with the second gray scale voltage generating unit;
the second gamma registering unit is used for outputting a second gray scale modulation voltage after modulation to the second gray scale voltage generating unit, and the second gray scale voltage generating unit is used for outputting a second gray scale voltage group to the source driving circuit according to the second gray scale modulation voltage.
7. The driving module of claim 2, wherein the at least two sub-gamma driving circuits further comprise a third sub-gamma driving circuit and a second sub-gamma driving circuit;
the third sub-gamma driving circuit includes a third power voltage AVDD3 and a third gray scale voltage group, the third power voltage AVDD1= c × VCI is satisfied with the analog reference voltage VCI, and the third gray scale voltage group includes a plurality of third gray scale voltages;
wherein 0-straw-a-straw-b-straw-c, and the third gray scale voltage is greater than the second gray scale voltage.
8. A driving method of a driving module, applied to the driving module according to any one of claims 1 to 7, the driving method comprising:
acquiring display demand information and a reference voltage signal;
determining a corresponding relation between a power supply voltage and the reference voltage signal according to the display requirement information; the power supply voltage and the analog reference voltage comprise at least two different groups of corresponding relations;
and outputting the power supply voltage to a gamma driving circuit so as to control the gamma driving circuit to output different gray scale voltage groups to a source driving circuit.
9. The driving method according to claim 8, wherein the gamma driving circuit includes at least two sub gamma driving circuits;
outputting the power supply voltage to a gamma driving circuit to control the gamma driving circuit to output different gray scale voltages to organize a source driving circuit, comprising:
and outputting different power supply voltages to different sub-gamma driving circuits to control the different sub-gamma driving circuits to output different gray scale voltage groups to the source level driving circuit.
10. A display panel includes a display region and a non-display region;
the display area comprises a plurality of data lines;
the non-display region includes the driving module of claims 1-7, the source driving circuit includes a plurality of data signal output terminals, and the data signal output terminals are electrically connected to the data lines.
11. A display device characterized by comprising the display panel according to claim 10.
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| CN110867168A (en) * | 2019-10-15 | 2020-03-06 | 昆山龙腾光电股份有限公司 | Gamma voltage adjusting circuit, adjusting method and display device |
| CN112863456A (en) * | 2021-03-02 | 2021-05-28 | 重庆先进光电显示技术研究院 | Display module, gamma voltage adjusting method of display module and display device |
| CN114283721A (en) * | 2021-11-18 | 2022-04-05 | 昆山国显光电有限公司 | Display panel, driving method of display panel and display device |
| CN114399980A (en) * | 2021-12-21 | 2022-04-26 | Tcl华星光电技术有限公司 | Working voltage determination method and device and display device |
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