CN112951166A - Drive IC, drive method of display panel, display panel and display device - Google Patents
Drive IC, drive method of display panel, display panel and display device Download PDFInfo
- Publication number
- CN112951166A CN112951166A CN202110348778.1A CN202110348778A CN112951166A CN 112951166 A CN112951166 A CN 112951166A CN 202110348778 A CN202110348778 A CN 202110348778A CN 112951166 A CN112951166 A CN 112951166A
- Authority
- CN
- China
- Prior art keywords
- display area
- actual
- driving voltage
- display
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention relates to the technical field of display, and discloses a drive IC (integrated circuit), a drive method of a display panel, the display panel and a display device, wherein the drive IC comprises the display panel, a control drive module connected with the display panel and an area detection module connected with the control drive module; the display panel includes a display area; the area detection module is used for detecting the actual display area of the display area and sending the actual display area to the control driving module; the control driving module is used for determining actual characteristic parameters matched with the actual display area according to the corresponding relation between the preset display area interval and the characteristic parameters, and driving the display area to display according to the actual characteristic parameters, wherein the characteristic parameters are used for representing the charging and discharging capacity of the control driving module on the display panel. The driving IC, the driving method of the display panel, the display panel and the display device provided by the invention can improve the display effect of the display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a driving IC, a driving method of a display panel, the display panel and a display device.
Background
The display panel of the conventional AMOLED device has the advantages of high image quality, power saving, thin body, wide application range, etc., and thus is widely applied to various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, etc., and becomes the mainstream of the display panel. At present, the AMOLED display device still has the problem of display nonuniformity in the aspect of brightness, and the nonuniformity of brightness display is mainly caused by the fact that the brightness of different areas of a display luminescent screen body is different due to the change of the display luminescent area of the module display screen body.
Therefore, it is necessary to provide a new driving IC and a driving method to solve the above problems.
Disclosure of Invention
Embodiments of the present invention provide a driving IC, a driving method of a display panel, a display panel and a display device, which can improve the display effect of the display panel.
To solve the above technical problem, an embodiment of the present invention provides a driving IC, including:
the device comprises a control driving module and an area detection module connected with the control driving module; the area detection module is used for detecting the actual display area of the display panel and sending the actual display area to the control driving module; the control driving module is used for determining an actual characteristic parameter matched with the actual display area according to a preset display area interval and a corresponding relation between characteristic parameters, and driving the display area to display according to the actual characteristic parameter, wherein the characteristic parameter is used for representing the charging and discharging capacity of the control driving module on the display panel.
In addition, the characteristic parameters comprise driving voltage, and the control driving module comprises a voltage selection unit, a digital-to-analog conversion unit and a power amplifier; the voltage selection unit is connected with the region detection module, and is used for receiving the actual display area, determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area interval and the driving voltage, and sending the actual driving voltage to the digital-to-analog conversion unit; the digital-to-analog conversion unit is connected with the voltage selection unit and is used for converting the received image data digital signals into image data analog signals under the actual driving voltage and sending the image data analog signals to the power amplifier; the power amplifier is connected with the digital-to-analog conversion unit and used for amplifying the received image data analog signals and outputting the amplified image data analog signals so as to drive the display area to display. An implementable method for improving display effect by changing driving voltage is provided.
In addition, the characteristic parameters comprise driving voltage and amplification factors, the control driving module comprises a voltage selection unit, a digital-to-analog conversion unit, a first power amplifier selection unit and M power amplifiers, wherein the amplification factors of the M power amplifiers are different from each other, and M is an integer greater than 1; the voltage selection unit is connected with the region detection module, and is used for receiving the actual display area, determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area and the driving voltage, and sending the actual driving voltage to the digital-to-analog conversion unit; the digital-to-analog conversion unit is connected with the voltage selection unit and is used for converting the received image data digital signals into image data analog signals under the actual driving voltage and sending the image data analog signals to the first power amplifier selection unit; the first power amplifier selection unit is connected with the region detection module and the input ends of the M power amplifiers, and is used for receiving the actual display area; determining an actual amplification factor matched with the actual display area according to a second corresponding relation between a preset display area and an amplification factor; selecting a power amplifier matched with the actual amplification factor from the M power amplifiers as a target power amplifier; sending the image data analog signal to the target power amplifier; the target power amplifier is used for amplifying the received image data analog signal and outputting the amplified image data analog signal so as to drive the display area to display. An implementable method of changing a driving voltage and a power amplifier to improve a display effect is provided.
In addition, the voltage selection unit comprises a first storage subunit, N driving voltage subunits and a first processing subunit; the N driving voltage subunits are connected with the digital-to-analog conversion unit and used for providing N driving voltages which are mutually unequal, wherein each driving voltage subunit is used for providing one driving voltage, and N is an integer greater than 1; the first storage subunit is used for storing N first corresponding relations between N driving voltages and N display area intervals, wherein each driving voltage corresponds to one display area interval, and the N display area intervals are intervals obtained by equally dividing the maximum display area N of the display panel; the first processing subunit is connected to the region detection module, the N driving voltage subunits, and the first storage subunit, and configured to determine a target display area interval to which the actual display area belongs, determine the actual driving voltage corresponding to the target display area interval according to the N first correspondence relationships, and control the driving voltage subunit corresponding to the actual driving voltage to operate. An implementable manner of the voltage selection unit is provided.
In addition, the first power amplifier selection unit comprises a second storage subunit and a second processing subunit; the second storage subunit is configured to store M second correspondence relationships between M amplification factors and M display area sections, where each amplification factor corresponds to one display area section, and the M display area sections are sections obtained by equally dividing a maximum display area M of the display panel; the second processing subunit is connected to the region detection module and the second storage subunit, and the second processing subunit is configured to determine a target display area interval to which the actual display area belongs, determine the actual amplification factor corresponding to the target display area interval according to the M second correspondence relationships, and control operation of a target power amplifier corresponding to the actual amplification factor. An implementable manner of the first power amplifier selection unit is provided.
In addition, the control driving module further comprises a second power amplifier selection unit, and the second power amplifier selection unit is used for receiving the amplified image data analog signal sent by the target power amplifier; and controlling whether to output the amplified image data analog signal.
An embodiment of the present invention further provides a driving method of a display panel, including: acquiring the actual display area of a display panel; determining an actual characteristic parameter matched with the actual display area according to a corresponding relation between a preset display area interval and the characteristic parameter, wherein the characteristic parameter is used for representing the charge and discharge capacity of the driving IC; and driving the display area to display according to the actual characteristic parameters.
In addition, the characteristic parameters include a driving voltage and an amplification factor; the determining the actual characteristic parameters matched with the actual display area according to the corresponding relation between the preset display area interval and the characteristic parameters comprises the following steps: determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area and the driving voltage; and determining an actual amplification factor matched with the actual display area according to a second corresponding relation between the preset display area and the amplification factor.
The embodiment of the invention also provides a display panel, which comprises a display area and a non-display area, wherein the driving IC is arranged in the non-display area, and the driving IC is connected with the data line arranged in the display area.
The embodiment of the invention also provides a display device which comprises the display panel.
Compared with the prior art, the embodiment of the invention at least has the following advantages:
because the display area of the display area can change when the display panel is dynamically curled to display, the actual display area of the display panel can be detected when the display panel is curled to display by arranging the area detection module; through setting up the control drive module, the control drive module can be according to the display area interval of predetermineeing, the corresponding relation between the characteristic parameter, confirm the actual characteristic parameter with actual display area matching, that is to say, even if can change along with the display area of the display panel that curls of display panel, the actual characteristic parameter who nevertheless adopts is according to the display area interval of predetermineeing, the corresponding relation between the characteristic parameter and actual display area determine, also be the actual characteristic parameter is relevant with display panel's display area, so can avoid the inconsistent problem of display area luminance because of the display area changes and arouse to appear, display panel's demonstration homogeneity has been improved, thereby display panel's display effect has been improved.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a driving IC according to a first embodiment of the present invention;
fig. 2 is another structural schematic diagram of a driving IC according to the first embodiment of the present invention;
fig. 3 is a schematic view of still another structure of a driving IC according to the first embodiment of the present invention;
fig. 4 is a flowchart illustrating a driving method of a display panel according to a second embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a driving IC, a schematic structural diagram of the driving IC is shown in fig. 1, and the driving IC includes:
the device comprises a control driving module 1 and an area detection module 2 connected with the control driving module 1; the region detection module 2 is used for detecting the actual display area of the display region of the display panel and sending the actual display area to the control drive module 1; the control driving module 1 is configured to determine an actual characteristic parameter matching the actual display area according to a preset display area interval and a corresponding relationship between the characteristic parameters, and drive the display area to display according to the actual characteristic parameter, where the characteristic parameter is used to represent a charging and discharging capability of the control driving module 1 on the display panel.
Compared with the prior art, the embodiment of the invention at least has the following advantages: because the display area of the display area can change when the display panel is dynamically curled to display, the actual display area of the display panel can be detected when the display panel is curled to display by arranging the area detection module 2; through setting up control drive module 1, control drive module 1 can be according to the display area interval that predetermines, the corresponding relation between the characteristic parameter, confirm the actual characteristic parameter that matches with actual display area, even if can change along with the display area of the curly display panel of display panel, the actual characteristic parameter who nevertheless adopts is according to the display area interval that predetermines, the corresponding relation between the characteristic parameter and actual display area determine, also be the actual characteristic parameter is relevant with the display area of display panel, so can avoid the problem that the display area luminance inconsistent appears that arouses because of the display area changes, display panel's demonstration homogeneity has been improved, thereby display panel's display effect has been improved.
Referring to fig. 1, the characteristic parameter includes a driving voltage, and the control driving module 1 includes a voltage selecting unit 11, a digital-to-analog converting unit 12, and a power amplifier 13; the voltage selection unit 11 is connected with the region detection module 2, the voltage selection unit 11 is configured to receive an actual display area, determine an actual driving voltage matched with the actual display area according to a first corresponding relationship between a preset display area interval and the driving voltage, and send the actual driving voltage to the digital-to-analog conversion unit 12; the digital-to-analog conversion unit 12 is connected to the voltage selection unit 11, and the digital-to-analog conversion unit 12 is configured to convert the received image data digital signal into an image data analog signal under the actual driving voltage, and send the image data analog signal to the power amplifier; the power amplifier 13 is connected to the digital-to-analog conversion unit 12, and the power amplifier 13 is configured to amplify the received image data analog signal and output the amplified image data analog signal to drive the display area to display.
It should be noted that the higher the driving voltage of the display panel is, the larger the current in the display panel is, so that the time for fully charging the storage capacitor in the display panel is shorter, that is, the charging capability of the display panel is stronger. Therefore, by changing the driving voltage of the display panel, the charging capability of the display panel can be changed, i.e., the charging and discharging capability of the display panel can be changed.
Specifically, the voltage selection unit 11 includes a first storage subunit, N driving voltage subunits, and a first processing subunit; the N driving voltage subunits are connected with the digital-to-analog conversion unit and used for providing N driving voltages which are mutually unequal, wherein each driving voltage subunit is used for providing one driving voltage, and N is an integer greater than 1; the first storage subunit is used for storing N first corresponding relations between N driving voltages and N display area intervals, wherein each driving voltage corresponds to one display area interval, and the N display area intervals are intervals obtained by equally dividing the maximum display area N of the display panel; the first processing subunit is connected with the region detection module, the N driving voltage subunits and the first storage subunit, and is used for judging a target display area interval to which the actual display area belongs, determining an actual driving voltage corresponding to the target display area interval according to the N first corresponding relations, and controlling the driving voltage subunit corresponding to the actual driving voltage to operate.
For convenience of understanding, the following takes as an example that the characteristic parameters include a driving voltage, N is equal to three, and a specific example is given to how the driving IC of the present embodiment works:
the voltage selection unit 11 includes three driving voltage sub-units, namely: the driving circuit comprises a first driving voltage subunit, a second driving voltage subunit and a third driving voltage subunit, wherein the first driving voltage subunit has a first driving voltage V1, the second driving voltage subunit has a second driving voltage V2, and the third driving voltage subunit has a third driving voltage V3.
Trisecting the maximum display area S of the display panel, namely, the N display area intervals are first intervals: [0, 1/3S), second interval: [1/3S, 2/3S ] and a third interval: (2/3S, S.) that is, the first section represents that the actual display area of the display panel is less than one-third of the maximum display area, the second section represents that the actual display area of the display panel is greater than or equal to one-third of the maximum display area and less than or equal to two-thirds of the maximum display area, and the third section represents that the actual display area of the display panel is greater than two-thirds of the maximum display area and less than or equal to the maximum display area.
It is understood that the first driving voltage V1, the second driving voltage V2 and the third driving voltage V3 are different from each other, and the first driving voltage V1, the second driving voltage V2 and the third driving voltage V3 are preset to correspond to the first interval, the second interval and the third interval, respectively, and the corresponding relationship is stored in the first storage subunit.
After the area detection module 2 detects the actual display area of the display area, the first processing subunit determines which section the actual display area belongs to (if the maximum display area of 1/6 is detected, it is determined that the actual display area belongs to the first section, and if the maximum display area of 1/2 is detected, it is determined that the actual display area belongs to the second section), taking the maximum display area of 3/4 as an example, it is determined that the actual display area belongs to the third section, and the voltage corresponding to the third section is the third driving voltage V3, and then the driving voltage subunit corresponding to the third driving voltage V3 is controlled to operate.
It should be noted that the third driving voltage V3 is greater than the second driving voltage V2, and the second driving voltage V2 is greater than the first driving voltage V1 in the above example. Specifically, when the actual display area of the display panel is larger, the resistance value in the plane is larger, so that the voltage drop is larger, and further, the luminance of the display area far away from the driving IC is obviously darker than that of the display area close to the driving IC.
Preferably, the first driving voltage V1, the second driving voltage V2 and the third driving voltage V3 in the above example have a proportional relationship, the magnitude of the second driving voltage V2 is between 1.5 times and 1.8 times that of the first driving voltage V1, and the magnitude of the third driving voltage V3 is between 1.4 times and 1.75 times that of the second driving voltage V2.
Fig. 2 is a schematic structural diagram of a driving IC in one possible embodiment of the invention. The characteristic parameters comprise driving voltage and amplification factors, the control driving module 1 comprises a voltage selection unit 11, a digital-to-analog conversion unit 12, a first power amplifier selection unit 13 and M power amplifiers 14, wherein the amplification factors of the M power amplifiers 14 are different from each other, and M is an integer greater than 1; the voltage selection unit 11 is connected with the region detection module 2, and the voltage selection unit 11 is configured to receive an actual display area, determine an actual driving voltage matched with the actual display area according to a first corresponding relationship between a preset display area and the driving voltage, and send the actual driving voltage to the digital-to-analog conversion unit; the digital-to-analog conversion unit 12 is connected to the voltage selection unit 11, and the digital-to-analog conversion unit 12 is configured to convert the received image data digital signal into an image data analog signal under the actual driving voltage, and send the image data analog signal to the first power amplifier selection unit 13; the first power amplifier selection unit 13 is connected with the region detection module 2 and the input ends of the M power amplifiers 14, and the first power amplifier selection unit 13 is used for receiving the actual display area; determining an actual amplification factor matched with the actual display area according to a second corresponding relation between the preset display area and the amplification factor; selecting a power amplifier matched with the actual amplification factor from the M power amplifiers 14 as a target power amplifier; sending the image data analog signal to a target power amplifier; the target power amplifier is used for amplifying the received image data analog signal and outputting the amplified image data analog signal so as to drive the display area to display.
For easy understanding, in the following, with reference to fig. 2, taking as an example that the characteristic parameters include a driving voltage and an amplification factor, and M is equal to three, a specific example is given to how the driving IC of the present embodiment works:
the three power amplifiers 14 shown in fig. 2 include a first power amplifier OP1, a second power amplifier OP2 and a third power amplifier OP3, wherein the first power amplifier OP1 has a first amplification factor, the second power amplifier OP2 has a second amplification factor, the third power amplifier has a third amplification factor, the third amplification factor is greater than the second amplification factor, the second amplification factor is greater than the first amplification factor, that is, the strongest driving capability of the third power amplifier OP3 is, and the weakest driving capability of the first power amplifier OP1 is.
Preferably, the first amplification factor, the second amplification factor and the third amplification factor have a certain proportional relationship, the second amplification factor of the second power amplifier OP2 is between 1.35 times and 1.65 times of the first amplification factor of the first power amplifier OP1, and the third amplification factor of the third power amplifier OP3 is between 1.45 times and 1.85 times of the second amplification factor of the second power amplifier OP 2.
The voltage selecting unit 11 shown in fig. 2 includes a first driving voltage subunit having a first driving voltage V1, a second driving voltage subunit having a second driving voltage V2, and a third driving voltage subunit having a third driving voltage V3.
Trisecting the maximum display area S of the display panel, namely M display area areas are first intervals: [0, 1/3S), second interval: [1/3S, 2/3S ] and a third interval: (2/3S, S.) that is, the first section represents that the actual display area of the display panel is less than one-third of the maximum display area, the second section represents that the actual display area of the display panel is greater than or equal to one-third of the maximum display area and less than or equal to two-thirds of the maximum display area, and the third section represents that the actual display area of the display panel is greater than two-thirds of the maximum display area and less than or equal to the maximum display area.
The first driving voltage V1 is preset to correspond to the first interval, the second driving voltage V2 corresponds to the second interval, and the third driving voltage V3 corresponds to the third interval, and the correspondence relationship is stored in the first storage subunit. A first amplification factor is preset to correspond to the first interval, a second amplification factor corresponds to the second interval, and a third amplification factor corresponds to the third interval.
After the region detecting module 2 detects the actual display area of the display region, the first processing subunit determines which section the actual display area belongs to, taking the maximum display area with the actual display area being 3/4 as an example, determines that the actual display area belongs to the third section, and controls the third driving voltage subunit corresponding to the third driving voltage V3 to operate if the voltage corresponding to the third section is the third driving voltage V3. The first power amplifier selecting unit 13 determines that the actual display area also belongs to the third interval, and the amplification factor corresponding to the third interval is the third amplification factor, that is, the digital-to-analog converting unit 12 converts the received image data digital signal into the image data analog signal under the third driving voltage V3, and sends the image data analog signal to the third power amplifier, and the image data analog signal is amplified by the third power amplifier and then output to drive the display area to display.
Preferably, the first power amplifier selecting unit 13 includes a second storage subunit and a second processing subunit. The second storage subunit is used for storing M second corresponding relations between M amplification factors and M display area intervals, wherein each amplification factor corresponds to one display area interval, and the M display area intervals are the intervals obtained by equally dividing the maximum display area M of the display panel; the second processing subunit is connected to the region detection module 2 and the second storage subunit, and is configured to determine a target display area interval to which an actual display area belongs, determine the actual amplification factor corresponding to the target display area interval according to the M second correspondence relationships, and control the target power amplifier corresponding to the actual amplification factor to operate. The specific process can be seen in the above example, which is not described herein.
It is worth to be noted that, when the actual display area of the display panel is larger, the RC (resistance capacitance) delay in the display panel is larger, so that the charging and discharging time of the capacitance at the end of the display panel, which is farther from the driving IC, is shorter, and the luminance of the display panel in different areas is different, and by setting the amplification coefficients of the driving voltage and the power amplifier larger when the actual display area is larger, on the one hand, the larger driving voltage can compensate the luminance difference caused by the voltage drop, that is, even if there is a voltage drop during the display process of the display panel, the voltage in the display area far from the driving IC will have a higher value; on the other hand, the amplification factor of the power amplifier is increased, so that the charging and discharging capacity of the capacitor is improved, the charging and discharging time of the capacitor at the tail end of the display panel which is farther away from the driving IC is shorter, but the capacitor at the tail end of the display panel which is farther away from the driving IC can still be fully charged or discharged within a shorter time, and therefore a user cannot feel the brightness difference of the display area easily, and the effect of improving the display effect of the display panel is achieved.
Referring to fig. 3, the control driving module 1 further includes a second power amplifier selecting unit 15, where the second power amplifier selecting unit 15 is configured to receive an amplified image data analog signal sent by a target power amplifier; and controls the amplified image data analog signal output. By the method, whether the image data analog signals are output or not can be controlled according to actual requirements, and the reliability of the display panel is improved.
Preferably, the second power amplifier selecting unit 15 is further connected to the area detecting module 2; the second power amplifier selection unit 15 is connected with the region detection module 2 and the output ends of the M power amplifiers 13, and the second power amplifier selection unit 15 is used for receiving the actual display area; determining an actual amplification factor corresponding to the actual display area according to a second corresponding relation between the preset display area and the amplification factor; and selecting a power amplifier matched with the actual amplification factor from the M power amplifiers 13, wherein the power amplifier selected by the second power amplifier selection unit and the target power amplifier are the same power amplifier.
Specifically, a switch subunit is arranged in the second power amplifier selection unit 15, and when the switch subunit is opened, the second power amplifier selection unit 15 outputs the amplified image data analog signal; when the switch subunit is closed, the second power amplifier selection unit 15 stops outputting the amplified image data analog signal.
A second embodiment of the present invention relates to a driving method of a display panel, and a flowchart of the driving method of the display panel in this embodiment is shown in fig. 4, and specifically includes:
step 101: an actual display area of a display panel is acquired.
Specifically, the driving IC of the display panel includes a GIP module, where the GIP module is used to drive a scan signal, and the driving IC of this embodiment can determine the current actual display area of the display panel by detecting the number of lines of the TFT switch turned on by each frame of the GIP module in real time.
Step 102: and determining the actual characteristic parameters matched with the actual display area according to the corresponding relation between the preset display area interval and the characteristic parameters.
Specifically, the characteristic parameters in the present embodiment include a drive voltage and an amplification factor; the determining of the actual characteristic parameter matched with the actual display area according to the corresponding relationship between the preset display area interval and the characteristic parameter may be: determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area and the driving voltage; and determining an actual amplification factor matched with the actual display area according to a second corresponding relation between the preset display area and the amplification factor.
Step 103: and driving the display area to display according to the actual characteristic parameters.
Compared with the prior art, the embodiment of the invention at least has the following advantages: because the display area of the display area can change when the display panel is dynamically curled to display, the actual display area of the display panel can be detected when the display panel is curled to display by arranging the area detection module; through setting up the control drive module, the control drive module can be according to the display area interval of predetermineeing, the corresponding relation between the characteristic parameter, confirm the actual characteristic parameter with actual display area matching, that is to say, even if can change along with the display area of the display panel that curls of display panel, the actual characteristic parameter who nevertheless adopts is according to the display area interval of predetermineeing, the corresponding relation between the characteristic parameter and actual display area determine, also be the actual characteristic parameter is relevant with display panel's display area, so can avoid the inconsistent problem of display area luminance because of the display area changes and arouse to appear, display panel's demonstration homogeneity has been improved, thereby display panel's display effect has been improved.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
It should be understood that the present embodiment is a related method embodiment to the first embodiment, and the present embodiment can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
A third embodiment of the present invention relates to a display panel including: the display device comprises a display area and a non-display area, wherein the driving IC is arranged in the non-display area, and the driving IC is connected with a data line arranged in the display area. Specifically, the display panel in this embodiment is a flexible rollable display panel.
A fourth embodiment of the present invention relates to a display device including the display panel in the above-described embodiments.
The display device can be applied to intelligent wearable equipment (such as an intelligent bracelet and an intelligent watch) and also can be applied to equipment such as a smart phone, a tablet personal computer and a display. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A driver IC, comprising: the device comprises a control driving module and an area detection module connected with the control driving module;
the area detection module is used for detecting the actual display area of the display panel and sending the actual display area to the control driving module;
the control driving module is used for determining an actual characteristic parameter matched with the actual display area according to a corresponding relation between a preset display area interval and the characteristic parameter, and driving the display area to display according to the actual characteristic parameter;
the characteristic parameters are used for representing the charging and discharging capacity of the control driving module to the display panel.
2. The driver IC of claim 1, wherein the characteristic parameter comprises a driving voltage, and the control driving module comprises a voltage selection unit, a digital-to-analog conversion unit, and a power amplifier;
the voltage selection unit is connected with the region detection module, and is used for receiving the actual display area, determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area interval and the driving voltage, and sending the actual driving voltage to the digital-to-analog conversion unit;
the digital-to-analog conversion unit is connected with the voltage selection unit and is used for converting the received image data digital signals into image data analog signals under the actual driving voltage and sending the image data analog signals to the power amplifier;
the power amplifier is connected with the digital-to-analog conversion unit and used for amplifying the received image data analog signals and outputting the amplified image data analog signals so as to drive the display area to display.
3. The driver IC of claim 1, wherein the characteristic parameters include a driving voltage and an amplification factor, and the control driving module includes a voltage selection unit, a digital-to-analog conversion unit, a first power amplifier selection unit, and M power amplifiers, wherein the amplification factors of the M power amplifiers are different from each other, and M is an integer greater than 1;
the voltage selection unit is connected with the region detection module, and is used for receiving the actual display area, determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area and the driving voltage, and sending the actual driving voltage to the digital-to-analog conversion unit;
the digital-to-analog conversion unit is connected with the voltage selection unit and is used for converting the received image data digital signals into image data analog signals under the actual driving voltage and sending the image data analog signals to the first power amplifier selection unit;
the first power amplifier selection unit is connected with the region detection module and the input ends of the M power amplifiers, and is used for receiving the actual display area; determining an actual amplification factor matched with the actual display area according to a second corresponding relation between a preset display area and an amplification factor; selecting a power amplifier matched with the actual amplification factor from the M power amplifiers as a target power amplifier; sending the image data analog signal to the target power amplifier;
the target power amplifier is used for amplifying the received image data analog signal and outputting the amplified image data analog signal so as to drive the display area to display.
4. The driver IC according to claim 2 or 3, wherein the voltage selection unit comprises a first storage subunit, N drive voltage subunits, and a first processing subunit;
the N driving voltage subunits are connected with the digital-to-analog conversion unit and used for providing N driving voltages which are different from each other, wherein each driving voltage subunit is used for providing one driving voltage, and N is an integer greater than 1;
the first storage subunit is configured to store N types of driving voltages and N first corresponding relationships between N display area sections, where each type of driving voltage corresponds to one display area section, and the N display area sections are sections obtained by equally dividing a maximum display area N of the display panel;
the first processing subunit is connected to the region detection module, the N driving voltage subunits, and the first storage subunit, and configured to determine a target display area interval to which the actual display area belongs, determine the actual driving voltage corresponding to the target display area interval according to the N first correspondence relationships, and control the driving voltage subunit corresponding to the actual driving voltage to operate.
5. The driver IC of claim 3, wherein the first power amplifier selection unit comprises a second storage subunit and a second processing subunit;
the second storage subunit is configured to store M second correspondence relationships between M amplification factors and M display area sections, where each amplification factor corresponds to one display area section, and the M display area sections are sections obtained by equally dividing a maximum display area M of the display panel;
the second processing subunit is connected to the region detection module and the second storage subunit, and the second processing subunit is configured to determine a target display area interval to which the actual display area belongs, determine the actual amplification factor corresponding to the target display area interval according to the M second correspondence relationships, and control the operation of the target power amplifier corresponding to the actual amplification factor.
6. The driver IC of claim 3 or 5, wherein the control driver module further comprises a second power amplifier selection unit, and the second power amplifier selection unit is configured to receive the amplified image data analog signal sent by the target power amplifier and control whether to output the amplified image data analog signal.
7. A method of driving a display panel, comprising:
acquiring the actual display area of a display panel;
determining an actual characteristic parameter matched with the actual display area according to a corresponding relation between a preset display area interval and the characteristic parameter, wherein the characteristic parameter is used for representing the charge and discharge capacity of the driving IC;
and driving the display area to display according to the actual characteristic parameters.
8. The driving method of the display panel according to claim 7, wherein the characteristic parameters include a driving voltage and an amplification factor;
the determining the actual characteristic parameters matched with the actual display area according to the corresponding relation between the preset display area interval and the characteristic parameters comprises the following steps:
determining an actual driving voltage matched with the actual display area according to a first corresponding relation between a preset display area and the driving voltage;
and determining an actual amplification factor matched with the actual display area according to a second corresponding relation between the preset display area and the amplification factor.
9. A display panel, comprising: a display region and a non-display region, the non-display region having the driver IC of any one of claims 1 to 6 provided therein, the driver IC being connected to a data line provided in the display region.
10. A display device characterized by comprising the display panel according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348778.1A CN112951166B (en) | 2021-03-31 | 2021-03-31 | Drive IC, drive method of display panel, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348778.1A CN112951166B (en) | 2021-03-31 | 2021-03-31 | Drive IC, drive method of display panel, display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112951166A true CN112951166A (en) | 2021-06-11 |
| CN112951166B CN112951166B (en) | 2022-10-04 |
Family
ID=76231547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110348778.1A Active CN112951166B (en) | 2021-03-31 | 2021-03-31 | Drive IC, drive method of display panel, display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951166B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150301636A1 (en) * | 2014-04-18 | 2015-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Display Device and Operation Method Thereof |
| KR20180028568A (en) * | 2016-09-08 | 2018-03-19 | 삼성디스플레이 주식회사 | Rollable display device and electronic device including the same |
| CN108037886A (en) * | 2017-11-29 | 2018-05-15 | 努比亚技术有限公司 | Display methods, mobile terminal and the readable storage medium storing program for executing of flexible screen |
| US20180197492A1 (en) * | 2016-07-20 | 2018-07-12 | Wuhan China Star Optoelectronics Technology Co., L td. | Gamma voltage generation circuit and drive apparatus |
| CN108877525A (en) * | 2018-06-29 | 2018-11-23 | 武汉天马微电子有限公司 | A kind of bent display panel and its display driving method |
| CN109300443A (en) * | 2018-12-03 | 2019-02-01 | 惠科股份有限公司 | A kind of displaying panel driving method and driving circuit |
| CN110610682A (en) * | 2019-08-20 | 2019-12-24 | 昆山国显光电有限公司 | Display panel, pixel circuit detection method and display device |
| CN110728935A (en) * | 2019-09-29 | 2020-01-24 | 昆山国显光电有限公司 | Detection method and detection device for display panel |
| US20200066219A1 (en) * | 2018-08-22 | 2020-02-27 | Boe Technology Group Co., Ltd. | Display Method of Curved Display Panel, and Curved Display Device |
| CN111681586A (en) * | 2020-06-11 | 2020-09-18 | Oppo广东移动通信有限公司 | Folding screen, control method thereof and electronic equipment |
| CN112242115A (en) * | 2019-07-16 | 2021-01-19 | 三星显示有限公司 | Display device and method of driving the same |
-
2021
- 2021-03-31 CN CN202110348778.1A patent/CN112951166B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150301636A1 (en) * | 2014-04-18 | 2015-10-22 | Semiconductor Energy Laboratory Co., Ltd. | Display Device and Operation Method Thereof |
| US20180197492A1 (en) * | 2016-07-20 | 2018-07-12 | Wuhan China Star Optoelectronics Technology Co., L td. | Gamma voltage generation circuit and drive apparatus |
| KR20180028568A (en) * | 2016-09-08 | 2018-03-19 | 삼성디스플레이 주식회사 | Rollable display device and electronic device including the same |
| CN108037886A (en) * | 2017-11-29 | 2018-05-15 | 努比亚技术有限公司 | Display methods, mobile terminal and the readable storage medium storing program for executing of flexible screen |
| CN108877525A (en) * | 2018-06-29 | 2018-11-23 | 武汉天马微电子有限公司 | A kind of bent display panel and its display driving method |
| US20200066219A1 (en) * | 2018-08-22 | 2020-02-27 | Boe Technology Group Co., Ltd. | Display Method of Curved Display Panel, and Curved Display Device |
| CN109300443A (en) * | 2018-12-03 | 2019-02-01 | 惠科股份有限公司 | A kind of displaying panel driving method and driving circuit |
| CN112242115A (en) * | 2019-07-16 | 2021-01-19 | 三星显示有限公司 | Display device and method of driving the same |
| CN110610682A (en) * | 2019-08-20 | 2019-12-24 | 昆山国显光电有限公司 | Display panel, pixel circuit detection method and display device |
| CN110728935A (en) * | 2019-09-29 | 2020-01-24 | 昆山国显光电有限公司 | Detection method and detection device for display panel |
| CN111681586A (en) * | 2020-06-11 | 2020-09-18 | Oppo广东移动通信有限公司 | Folding screen, control method thereof and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112951166B (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100405876B1 (en) | Liquid crystal driver and liquid crystal display incorporating the same | |
| CN107909980B (en) | GOA circuit and liquid crystal display device with same | |
| CN108877723B (en) | GOA circuit and liquid crystal display device with same | |
| JP5133585B2 (en) | Method and related apparatus for reducing power consumption of source driver | |
| CN109493824B (en) | Source driver, display device and driving method thereof | |
| US8482502B2 (en) | Common voltage generator, display device including the same, and method thereof | |
| US20070195054A1 (en) | Source driver circuit for controlling slew rate according to frame frequency and method of controlling slew rate according to frame frequency in the source driver circuit | |
| KR20150051462A (en) | Liquid crystal display and driving method thereof | |
| US9984646B2 (en) | Driving circuit for display panel | |
| US10263517B2 (en) | Voltage boosting circuit capable of modulating duty cycle automatically | |
| KR20080107064A (en) | Liquid crystal display and method of dirving the same | |
| US9153188B2 (en) | Driving apparatus of display with pre-charge mechanism | |
| CN106097991B (en) | The data drive circuit and driving method of liquid crystal display panel | |
| CN111243540A (en) | Driving method and driving circuit of display panel and display device | |
| US20060119739A1 (en) | Gamma correction apparatus and methods thereof | |
| CN108735171A (en) | Output circuit, datawire driver and display device | |
| US9711102B2 (en) | DC-DC converter, display apparatus having the same and method of driving display panel using the same | |
| CN112951166B (en) | Drive IC, drive method of display panel, display panel and display device | |
| CN112542125A (en) | Slew rate enhancement circuit, source driving chip and display device | |
| US11455931B1 (en) | Source driving circuit for improving gamma voltage response time and display device | |
| US8228097B2 (en) | Circuit for driving a display panel using a driving capacitor | |
| CN214279558U (en) | Slew rate enhancement circuit, source driving chip and display device | |
| TW201032580A (en) | Gamma voltage generating apparatus and gamma voltage generator | |
| CN108417173B (en) | Display device | |
| CN109147680B (en) | Backlight source drive circuit and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |