CN112467835A - Display panel charging method and device and display panel - Google Patents
Display panel charging method and device and display panel Download PDFInfo
- Publication number
- CN112467835A CN112467835A CN202011305008.0A CN202011305008A CN112467835A CN 112467835 A CN112467835 A CN 112467835A CN 202011305008 A CN202011305008 A CN 202011305008A CN 112467835 A CN112467835 A CN 112467835A
- Authority
- CN
- China
- Prior art keywords
- gray scale
- charged
- bias current
- current
- charging
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000013507 mapping Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
Abstract
The application provides a display panel charging method, a display panel charging device and a display panel, wherein the display panel comprises an IC chip, an amplifier, a plurality of charging lines and a plurality of sub-pixels, each charging line is connected with a plurality of sub-pixels, the IC chip is connected with the plurality of charging lines through the amplifier, the IC chip outputs bias current to the plurality of charging lines in sequence through the amplifier so as to charge the sub-pixels connected to the corresponding charging lines, and the method is applied to the IC chip and comprises the following steps: acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged; determining a target bias current according to a gray scale interval corresponding to a current circuit to be charged; and outputting the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a display panel charging method and device and a display panel.
Background
When the display panel charges the circuit and the sub-pixels connected to the circuit by using the IC chip and the amplifier, the luminance required to be displayed by different circuits is different, and the existing charging method is that no matter whether the luminance required to be displayed by different circuits is different, the IC chip controls the amplifier to output according to the same bias current.
Disclosure of Invention
An object of the embodiments of the present application is to provide a display panel charging method, a display panel charging apparatus, an electronic device, and a storage medium, so as to solve the problem that power consumption is high when an IC chip controls an amplifier to output a bias current with the highest luminance according to a difference in luminance required to be displayed in different lines in an existing display panel charging manner.
In a first aspect, the present invention provides a method for charging a display panel, where the display panel includes an IC chip, an amplifier, a plurality of charging lines, and a plurality of sub-pixels, each charging line is connected to a plurality of sub-pixels, the IC chip is connected to the plurality of charging lines through the amplifier, and the IC chip sequentially outputs a bias current to the plurality of charging lines through the amplifier to charge the sub-pixels connected to the corresponding charging lines, and the method is applied to the IC chip and includes: acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to different gray scale intervals are different; determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged; and outputting a driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
In the above designed display panel charging method, all luminance values are divided into a plurality of gray scale intervals, so that when the charging circuit is charged, the corresponding gray scale interval is determined based on the luminance value required to be displayed by the current circuit to be charged, the target bias current value required to be output by the amplifier is further determined according to the gray scale interval corresponding to the current circuit to be charged, then the driving current corresponding to the target bias current is output to the amplifier, and the amplifier is further controlled to output the target bias current value to the current circuit to be charged, through the design, the target bias current value output by the amplifier is not maintained to be the highest and unchanged as the existing mode, but is adaptively adjusted based on the luminance required to be displayed by the charging circuit, and the problem that when the luminance required to be displayed by different circuits is different in the existing display panel charging mode is solved, the IC chip can control the amplifier to output the bias current with the highest brightness, so that the power consumption is high, and the display panel designed by the scheme can save more power when charging and displaying.
In an optional implementation manner of the first aspect, the determining a target bias current according to a gray scale interval corresponding to the current circuit to be charged includes: and searching a preset first mapping relation table according to the gray scale interval corresponding to the current circuit to be charged so as to obtain the corresponding target bias current.
In an optional implementation manner of the first aspect, the determining a target bias current according to a gray scale interval corresponding to the current circuit to be charged includes: acquiring a second gray scale interval corresponding to a previous charging circuit, wherein the previous charging circuit is a charging circuit which has completed charging in a previous charging cycle; determining a gray scale difference value between the current charging line to be charged and the last charging line according to the gray scale interval corresponding to the current charging line to be charged and the second gray scale interval; determining the adjustment amount of the bias current according to the gray scale difference value; and determining the target bias current according to the bias current adjustment amount and a first output bias current, wherein the first output bias current is the output bias current of the amplifier after the last charging circuit is charged.
In an optional implementation manner of the first aspect, the determining a gray scale difference value between a current charging line to be charged and a previous charging line according to a gray scale interval corresponding to the current charging line to be charged and a second gray scale interval includes: acquiring a first interval identifier of a gray scale interval corresponding to a current line to be charged and a second interval identifier of a second gray scale interval, wherein all gray scale intervals have interval identifiers from small to large according to brightness from dark to bright; and calculating the difference value of the first interval mark and the second interval mark to obtain the gray scale difference value.
In an optional implementation manner of the first aspect, the determining an adjustment amount of a bias current according to the gray scale difference value includes: acquiring a unit adjustment quantity of a bias current corresponding to a preset gray scale difference value of each unit; and calculating the bias current adjustment amount corresponding to the gray scale difference value according to the gray scale difference value and the bias current unit adjustment amount.
In an optional implementation manner of the first aspect, the determining an adjustment amount of a bias current according to the gray scale difference value includes: and searching a preset second mapping relation table according to the gray scale difference value to obtain a corresponding bias current adjustment value.
In a second aspect, the present invention provides a display panel, where the display panel includes an IC chip, an amplifier, a plurality of charging lines and a plurality of sub-pixels, each charging line is connected to a plurality of sub-pixels, and the IC chip is connected to the plurality of charging lines through the amplifier; the IC chip is used for outputting bias current to the plurality of charging lines in sequence through the amplifier so as to charge the sub-pixels connected to the corresponding charging lines; the IC chip is also used for acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to different gray scale intervals are different; determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged; and outputting a driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
In the display panel designed above, by dividing all the luminance values into a plurality of gray scale sections, when the charging circuit is charged, the corresponding gray scale section is determined based on the luminance value required to be displayed by the current circuit to be charged, and further the target bias current value required to be output by the amplifier is determined according to the gray scale section corresponding to the current circuit to be charged, and then the driving current corresponding to the target bias current is output to the amplifier so as to control the amplifier to output the target bias current value to the current circuit to be charged, through the design, the target bias current value output by the amplifier is not maintained to be the highest and unchanged as in the existing mode, but the target bias current value required to be displayed by the charging circuit is further adaptively adjusted based on the luminance required to be displayed by the charging circuit, thereby solving the problem that when the existing display panel charging mode has different luminance requirements, the IC chip can control the amplifier to output the bias current with the highest brightness, so that the power consumption is high, and the display panel designed by the scheme can save more power when charging and displaying.
In a third aspect, the present invention provides a display panel charging device, where the display panel includes an IC chip, an amplifier, a plurality of charging lines, and a plurality of sub-pixels, each charging line is connected to a plurality of sub-pixels, the IC chip is connected to the plurality of charging lines through the amplifier, the IC chip sequentially outputs a bias current to the plurality of charging lines through the amplifier to charge the sub-pixels connected to the corresponding charging lines, and the device is applied to the IC chip, and includes: the acquisition module is used for acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; the determining module is used for determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to the different gray scale intervals are different; and determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged. And the output module is used for outputting the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
In the display panel charging device with the above design, all the luminance values are divided into a plurality of gray scale sections, so that when the charging lines are charged, the corresponding gray scale section is determined based on the luminance value required to be displayed by the current circuit to be charged, the target bias current value required to be output by the amplifier is further determined according to the gray scale section corresponding to the current circuit to be charged, then the driving current corresponding to the target bias current is output to the amplifier, and the amplifier is further controlled to output the target bias current value to the current circuit to be charged, through the design, the target bias current value output by the amplifier is not maintained to be the highest and unchanged as the existing mode, but the target bias current value is adaptively adjusted based on the luminance required to be displayed by the charging lines, so that the problem that when the luminance required to be displayed by different lines is different in the existing display panel charging mode is solved, the IC chip can control the amplifier to output the bias current with the highest brightness, so that the power consumption is high, and the display panel designed by the scheme can save more power when charging and displaying.
In an optional implementation manner of the third aspect, the determining module is specifically configured to search a preset first mapping relation table according to a gray scale interval corresponding to the current circuit to be charged to obtain a corresponding target bias current.
In an optional implementation manner of the third aspect, the determining module is further specifically configured to obtain a second gray scale interval corresponding to a previous charging line, where the previous charging line is a charging line that has been charged in a previous charging cycle; determining a gray scale difference value between the current charging line to be charged and the last charging line according to the gray scale interval corresponding to the current charging line to be charged and the second gray scale interval; determining the adjustment amount of the bias current according to the gray scale difference value; and determining the target bias current according to the bias current adjustment amount and a first output bias current, wherein the first output bias current is the output bias current of the amplifier after the last charging circuit is charged.
In a fourth aspect, an embodiment provides an electronic device, including a memory and a processor, where the memory stores a computer program, and the processor executes the computer program to perform the method in the first aspect or any optional implementation manner of the first aspect.
In a fifth aspect, the embodiments provide a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the method in the first aspect or any optional implementation manner of the first aspect.
In a sixth aspect, embodiments provide a computer program product, which when run on a computer, causes the computer to execute the method of the first aspect, or any optional implementation manner of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a first flowchart of a display panel charging method according to an embodiment of the present disclosure;
FIG. 3 is a second flowchart of a method for charging a display panel according to an embodiment of the present disclosure;
fig. 4 is a third flowchart of a charging method for a display panel according to an embodiment of the present disclosure;
fig. 5 is a fourth flowchart of a display panel charging method according to an embodiment of the present disclosure;
fig. 6 is a fifth flowchart of a display panel charging method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a display panel charging device according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Icon: 10-IC chip; 20-an amplifier; 30-a charging line; 40-sub-pixels; 200-an obtaining module; 201-a determination module; 202-an output module; 3-an electronic device; 301-a processor; 302-a memory; 303-communication bus.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The embodiment of the present application provides a display panel, as shown in fig. 1, the display panel includes an IC chip 10, an amplifier 20, a plurality of charging lines 30, and a plurality of sub-pixels 40, each charging line 30 is connected in parallel to a plurality of sub-pixels 40, each sub-pixel 40 has a capacitor therein for storing and discharging electricity, 3 sub-pixels RGB form a pixel unit, or four sub-pixels RGBG form a pixel unit; the IC chip 10 is electrically connected to each charging line 30 through the amplifier 20, and sequentially charges each charging line 30. Specifically, when the IC chip 10 sequentially charges the charging lines 30 through the amplifier 20, the amplifier 20 is controlled to output the bias current to the corresponding charging line, the specific connection of the IC chip can be as shown in fig. 1, the IC chip is connected to the positive input end of the amplifier 20, the negative input end of the amplifier 20 is connected to the output end, the output end of the amplifier 20 is electrically connected to each charging line 30, here, it should be noted that a controllable switch can be arranged between the output end of the amplifier 20 and each charging line 30, and then when a certain charging line is charged, the corresponding controllable switch is closed, where the controllable switch can be a PMOS transistor, a thyristor, or the like.
On the basis of the display panel designed above, the present application provides a display panel charging method, which is applied to the IC chip described above, and as shown in fig. 2, the method specifically includes the following steps:
step S100: and acquiring expected brightness values of a plurality of sub-pixels connected with the current circuit to be charged.
Step S102: and determining a gray scale interval corresponding to the current circuit to be charged according to the expected brightness values of the plurality of sub-pixels corresponding to the current circuit to be charged.
Step S104: and determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged.
Step S106: and outputting the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
In step S100, when the IC chip charges the charging line, it needs to obtain an expected brightness value of the charging line from the front end (AP end), where the expected brightness value represents an expected display brightness of a plurality of sub-pixels connected to the charging line, where the IC chip is described as charging the charging line in sequence through an amplifier, and on this basis, the current charging line in step S100 represents any charging line currently needing to be charged in the charging line, for example, when there are n charging lines in each of the charging line numbers 1 to n, the IC chip is assumed to be charged in sequence from 1 to n when charging is performed, and the charging line can represent any charging line in the numbers 1 to n. After the IC chip performs step S100 to obtain the expected luminance values of the sub-pixels connected to the current circuit to be charged, step S102 may be performed.
In step S102, a plurality of gray scale sections are pre-stored in the IC chip, each gray scale section corresponds to a plurality of different brightness values, and the brightness values corresponding to the different gray scale sections are different, specifically, the brightness values of 0 to 255 may be divided into a plurality of gray scale sections, for example, all the brightness values may be sequentially divided into a plurality of gray scale sections with section identifiers from small to large according to the brightness values of the gray scale sections from light to dark, for example, when the gray scale sections are divided into 5 gray scale sections, the gray scale section identifiers of the 5 gray scale sections are respectively 1, 2, 3, 4 and 5 from small to large, each gray scale section has 51 brightness values, wherein the gray scale sections gradually increase in brightness value from the section identifier 1 to 5, that is, the gray scale sections and the identifiers corresponding to the gray scale sections are stored in advance in a register or a buffer of the driving IC chip, after the IC chip obtains the expected brightness value of the current line to be charged in step S100, the gray scale interval corresponding to the current circuit to be charged can be determined according to which gray scale interval the expected brightness value is located in, and then step S104 is executed.
In step S104, the IC chip may determine a target bias current currently required to be output by the amplifier according to a gray scale interval corresponding to a current circuit to be charged, where the determination of the target bias current according to the gray scale interval corresponding to the current circuit to be charged may be performed in the following manner, as shown in fig. 3, and the method specifically includes the following steps:
step S1040: and searching a preset first mapping relation table according to the gray scale interval corresponding to the current circuit to be charged so as to obtain the corresponding target bias current.
In step S1040, it is stated that a plurality of gray scale intervals can be set, a first mapping table may also be set in advance, and the first mapping table has the bias current mapped to each gray scale interval, so that after the gray scale interval corresponding to the circuit to be charged is obtained, the target bias current corresponding to the gray scale interval can be found in the first mapping table. Specifically, according to the foregoing example, the gray scale interval gradually increases from the interval identifier 1 to 5, and the larger the brightness is, the larger the required bias current is, the sequentially increasing bias current may be set, for example, assuming that the maximum bias current corresponding to the gray scale interval identified as 5 is 1.0X, X represents the magnitude of the bias current output by the amplifier according to the brightest brightness value in the conventional mode, the gray scale interval identified as 4-1 may be set to 0.8X, 0.6X, 0.4X, and 0.2X, respectively, so that each gray scale interval corresponds to a bias current, and the above designed bias current is only for example to facilitate solution understanding, and the magnitude of the bias current of each gray scale interval may be set according to the actual situation when the application is performed. On the basis, if the current charging line is the 1 st line and the gray scale interval in which the current charging line is located is the interval marked with 4, the corresponding target bias current value can be found to be 0.8X; for example, if the current charging line is the aforementioned 5 th charging line, and the gray scale interval in which the current charging line is located is the interval marked with 3, the target bias current value corresponding to the current charging line can be found to be 0.6X.
In an alternative embodiment of this embodiment, in addition to the above embodiment to determine the target bias current, in order to make the change of the bias current reflect the brightness difference between two adjacent charging lines and further adjust the bias current more accurately, the bias current may be further adjusted based on the gray scale interval by the following method, as shown in fig. 4, which specifically includes the following steps:
step S1041: and acquiring a second gray scale interval corresponding to the last charging circuit.
Step S1042: and determining the gray scale difference value between the current charging line to be charged and the last charging line according to the gray scale interval corresponding to the current charging line to be charged and the second gray scale interval.
Step S1043: and determining the adjustment amount of the bias current according to the gray scale difference value.
Step S1044: and determining a target bias current according to the bias current adjustment amount and a first output bias current, wherein the first output bias current is the output bias current of the amplifier after the last charging circuit is charged.
In step S1041, the previous charging line represents a charging line that has been charged in the previous charging cycle, and since the charging is completed in the previous charging cycle, the corresponding second gray scale interval can be obtained, and the second gray scale interval corresponding to the previous charging line can also be determined by the gray scale interval where the expected brightness value is located as described above. Specifically, for example, when the number of the charging lines is 1 to n, assuming that the current charging line to be charged is the xth charging line, the last charging line can be represented as the xth-1 charging line. In addition, it should be noted that in this embodiment, when the system is just started, that is, when the current charging line to be charged is the 1 st charging line, because there is no previous charging line, in such a case, the 1 st charging line may determine its bias current value by directly searching the corresponding target bias current value in the first mapping table through the gray scale section as described in the previous embodiment, and the subsequent charging lines may sequentially determine their output bias current values by using the above method. After the second gray scale interval corresponding to the last charging line is obtained in step S1041, step S1042 is executed.
In step S1042, the IC chip determines a gray scale difference value between the current charging line to be charged and the previous charging line according to the gray scale interval corresponding to the current charging line and the second gray scale interval, specifically, as shown in fig. 5, the gray scale difference value may be specifically determined in the following manner:
step S10420: and acquiring a first interval identifier of a gray scale interval corresponding to the current circuit to be charged and a second interval identifier of a second gray scale interval.
Step S10421: and calculating the difference value of the first interval mark and the second interval mark to obtain a gray scale difference value.
As described above, all luminance values are sequentially divided into a plurality of gray scale intervals with interval identifications from small to large according to the luminance values of the gray scale intervals from light to dark, for example, when the luminance values are divided into 5 gray scale intervals, the gray scale interval identifications of the 5 gray scale intervals are respectively 1, 2, 3, 4 and 5 from small to large, on this basis, step S10420 represents that a first interval identification of the gray scale interval corresponding to the current line to be charged and a second interval identification of a second gray scale interval corresponding to the last charging line are obtained, and then step S10421 is executed to calculate the difference value between the first interval identification and the second interval identification, and the difference value is used as a gray scale difference value. For example, if the first interval is identified as 3 and the second interval is identified as 5, the calculated gray level difference value is-2.
After the gray scale difference values are obtained in the above manner, step S1043 may be executed to determine the bias current adjustment amount according to the gray scale difference values, where the manner of determining the bias current adjustment amount according to the gray scale difference values may also adopt a mapping table manner, for example, a second mapping relation table may be preset, and each gray scale difference value in the second mapping relation table corresponds to a bias current adjustment amount, and then after the gray scale difference values are obtained by calculation, the corresponding bias current adjustment amount may be obtained by directly searching in the second mapping relation table according to the gray scale difference values. In addition to this way, the bias current adjustment amount may be calculated as follows, as shown in fig. 6, which specifically includes the following steps:
step S10430: and acquiring a unit adjustment quantity of the bias current corresponding to the preset gray scale difference value of each unit.
Step S10431: and calculating the bias current adjustment amount corresponding to the gray scale difference value according to the gray scale difference value and the bias current unit adjustment amount.
In the above step, the unit adjustment amount of the bias current corresponding to each unit gray scale difference value may be preset, that is, what the unit adjustment amount of the bias current corresponding to each unit gray scale difference value differs by 1, for example, the unit adjustment amount of the bias current corresponding to each unit gray scale difference value differs by 1 is 0.2X, according to the foregoing example, if the first interval identifier is 3 and the second interval identifier is 5, the calculated gray scale difference value is-2, and then the corresponding unit adjustment amount of the bias current is-2X 0.2X-0.4X; assuming that the first interval is labeled 4 and the second interval is labeled 1, the calculated gray-scale difference value is +3, and the corresponding bias current adjustment amount is 3 × 0.2 × 0.6X.
Based on the obtained offset current adjustment amount, step S1044 may be executed to determine a target offset current value according to the offset current adjustment amount and a first output offset current value, where the first output offset current is a current output offset current of the amplifier, that is, an output offset current of the amplifier after the charging of the last charging line is completed.
Based on the above design, step S106 may be executed to output the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged. In this step, the IC chip may adjust the output bias current of the amplifier by adjusting the driving current to the amplifier, so that the output bias current of the amplifier is adjusted to the target bias current. Specifically, the target bias current of the amplifier and the drive current of the drive amplifier may also be mapped in advance, so that the drive current can be obtained after the target bias current is obtained, for example, when the target bias output by the amplifier is 0.6X, the mapped drive current is 5uA, and the like; of course, a mapping relationship between each bias current adjustment amount and the corresponding driving current adjustment amount may also be set, and then the driving current may be changed based on the bias current adjustment amount, so that the bias current output by the amplifier may be the target bias current.
For example, it has been described above that the 1 st charging line may determine its bias current value by directly searching for the corresponding target bias current value through the gray scale interval as described in the previous embodiment, and the subsequent charging lines may sequentially determine their output bias current values by the above method, and assuming that the current charging line to be charged is the 2 nd charging line and its corresponding first interval identifier is 3, then the previous charging line is the 1 st charging line and its corresponding second interval identifier is 5, then the first output bias current value may be determined as 1.0X by the method of directly searching for the corresponding target bias current value through the gray scale interval as described in the previous embodiment, and the obtained bias current adjustment amount is-0.4X, then the first output bias current value 1.0X may be adjusted down by 0.4X when the 2 nd charging line is charged, obtaining a target bias current value of 0.6X, further inquiring a drive current corresponding to the target bias current value of 0.6X, and further driving the amplifier to enable the bias current output by the amplifier to be 0.6X; when the adjustment amount mode is adopted, the corresponding drive current adjustment amount can be inquired according to the bias current adjustment amount of-0.4X, and then the drive current of the amplifier is adjusted to enable the bias current output by the amplifier to be 0.6X; and (3) in the upper and lower charging lines based on the above, obtaining the target bias current value output by the amplifier in the above steps to further output the 3 rd charging line, and similarly, calculating the target bias current value of the charging line up to the nth charging line by the same method.
In the above designed display panel charging method, all luminance values are divided into a plurality of gray scale intervals, so that when the charging circuit is charged, the corresponding gray scale interval is determined based on the luminance value required to be displayed by the current circuit to be charged, the target bias current value required to be output by the amplifier is further determined according to the gray scale interval corresponding to the current circuit to be charged, then the driving current corresponding to the target bias current is output to the amplifier, and the amplifier is further controlled to output the target bias current value to the current circuit to be charged, through the design, the target bias current value output by the amplifier is not maintained to be the highest and unchanged as the existing mode, but is adaptively adjusted based on the luminance required to be displayed by the charging circuit, and the problem that when the luminance required to be displayed by different circuits is different in the existing display panel charging mode is solved, the IC chip can control the amplifier to output the bias current with the highest brightness, so that the power consumption is high, and the display panel designed by the scheme can save more power when charging and displaying.
Fig. 7 shows a schematic structural block diagram of a display panel charging device provided in the present application, it should be understood that the display panel is the display panel introduced in the foregoing, the device corresponds to the method embodiment executed by the IC chip in fig. 2 to 6, the steps involved in the method executed by the IC chip in the foregoing embodiment can be executed, the specific functions of the device can be referred to the description in the foregoing, and a detailed description is appropriately omitted here to avoid redundancy. The device includes at least one software function that can be stored in memory in the form of software or firmware (firmware) or solidified in the Operating System (OS) of the device. Specifically, the apparatus includes: an obtaining module 200, configured to obtain expected luminance values of a plurality of sub-pixels connected to a current line to be charged; the determining module 201 is configured to determine a gray scale interval corresponding to a current circuit to be charged according to expected luminance values of a plurality of sub-pixels corresponding to the current circuit to be charged, where the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different luminance values, and luminance values corresponding to different gray scale intervals are different; determining a target bias current according to a gray scale interval corresponding to the current circuit to be charged; the output module 202 is configured to output a driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
In the display panel charging device with the above design, all the luminance values are divided into a plurality of gray scale sections, so that when the charging lines are charged, the corresponding gray scale section is determined based on the luminance value required to be displayed by the current circuit to be charged, the target bias current value required to be output by the amplifier is further determined according to the gray scale section corresponding to the current circuit to be charged, then the driving current corresponding to the target bias current is output to the amplifier, and the amplifier is further controlled to output the target bias current value to the current circuit to be charged, through the design, the target bias current value output by the amplifier is not maintained to be the highest and unchanged as the existing mode, but the target bias current value is adaptively adjusted based on the luminance required to be displayed by the charging lines, so that the problem that when the luminance required to be displayed by different lines is different in the existing display panel charging mode is solved, the IC chip can control the amplifier to output the bias current with the highest brightness, so that the power consumption is high, and the display panel designed by the scheme can save more power when charging and displaying.
In an optional implementation manner of this embodiment, the determining module 201 is specifically configured to search a preset first mapping relation table according to a gray scale interval corresponding to a current circuit to be charged to obtain a corresponding target bias current.
In an optional implementation manner of this embodiment, the determining module 201 is further specifically configured to obtain a second gray scale interval corresponding to a previous charging line, where the previous charging line is a charging line that has been charged in a previous charging cycle; determining a gray scale difference value between the current charging line to be charged and the last charging line according to the gray scale interval corresponding to the current charging line to be charged and the second gray scale interval; determining the adjustment amount of the bias current according to the gray scale difference value; and determining a target bias current according to the bias current adjustment amount and a first output bias current, wherein the first output bias current is the output bias current of the amplifier after the last charging circuit is charged.
As shown in fig. 8, the present application provides an electronic device 3 including: a processor 301 and a memory 302, the processor 301 and the memory 302 being interconnected and communicating with each other via a communication bus 303 and/or other form of connection mechanism (not shown), the memory 302 storing a computer program executable by the processor 301, the computer program being executable by the processor 301 when the computing device is running to perform the method process of any of the previous implementations, such as the steps S100 to S106: acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged; determining a target bias current according to a gray scale interval corresponding to a current circuit to be charged; and outputting the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
The present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the method processes of any of the preceding implementations.
The storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk.
The present application provides a computer program product which, when run on a computer, causes the computer to perform the method processes of any of the preceding implementations.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A display panel charging method is characterized in that the display panel comprises an IC chip, an amplifier, a plurality of charging lines and a plurality of sub-pixels, the plurality of sub-pixels are connected to each charging line, the IC chip is connected with the plurality of charging lines through the amplifier, the IC chip sequentially outputs bias currents to the plurality of charging lines through the amplifier so as to charge the sub-pixels connected to the corresponding charging lines, and the method is applied to the IC chip and comprises the following steps:
acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged;
determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to different gray scale intervals are different;
determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged;
and outputting a driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
2. The method of claim 1, wherein the determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged comprises:
and searching a preset first mapping relation table according to the gray scale interval corresponding to the current circuit to be charged so as to obtain the corresponding target bias current.
3. The method of claim 1, wherein the determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged comprises:
acquiring a second gray scale interval corresponding to a previous charging circuit, wherein the previous charging circuit is a charging circuit which has completed charging in a previous charging cycle;
determining a gray scale difference value between the current charging line to be charged and the last charging line according to the gray scale interval corresponding to the current charging line to be charged and the second gray scale interval;
determining the adjustment amount of the bias current according to the gray scale difference value;
and determining the target bias current according to the bias current adjustment amount and a first output bias current, wherein the first output bias current is the output bias current of the amplifier after the last charging circuit is charged.
4. The method according to claim 3, wherein the determining a gray scale difference value between the current circuit to be charged and the last circuit to be charged according to the gray scale interval corresponding to the current circuit to be charged and the second gray scale interval comprises:
acquiring a first interval identifier of a gray scale interval corresponding to a current line to be charged and a second interval identifier of a second gray scale interval, wherein all gray scale intervals have interval identifiers from small to large according to brightness from dark to bright;
and calculating the difference value of the first interval mark and the second interval mark to obtain the gray scale difference value.
5. The method of claim 4, wherein determining an amount of bias current adjustment based on the gray level difference value comprises:
acquiring a unit adjustment quantity of a bias current corresponding to a preset gray scale difference value of each unit;
and calculating the bias current adjustment amount corresponding to the gray scale difference value according to the gray scale difference value and the bias current unit adjustment amount.
6. The method of claim 3, wherein determining an amount of bias current adjustment based on the gray level difference value comprises:
and searching a preset second mapping relation table according to the gray scale difference value to obtain a corresponding bias current adjustment value.
7. A display panel is characterized by comprising an IC chip, an amplifier, a plurality of charging lines and a plurality of sub-pixels, wherein each charging line is connected with the plurality of sub-pixels, and the IC chip is connected with the plurality of charging lines through the amplifier;
the IC chip is used for outputting bias current to the plurality of charging lines in sequence through the amplifier so as to charge the sub-pixels connected to the corresponding charging lines;
the IC chip is also used for acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged; determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to different gray scale intervals are different; determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged; and outputting a driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
8. The utility model provides a display panel charging device, the display panel includes IC chip, amplifier, many charging lines and a plurality of sub-pixel, is connected with a plurality of sub-pixel on each charging line, the IC chip pass through the amplifier with many charging lines are connected, the IC chip passes through the amplifier in proper order to many charging lines output bias current in order to charge the sub-pixel of connecting on the corresponding charging line, the device is applied to the IC chip, include:
the acquisition module is used for acquiring expected brightness values of a plurality of sub-pixels connected with a current circuit to be charged;
the determining module is used for determining a gray scale interval corresponding to the current circuit to be charged according to expected brightness values of a plurality of sub-pixels corresponding to the current circuit to be charged, wherein the IC chip is preset with a plurality of gray scale intervals, each gray scale interval corresponds to a plurality of different brightness values, and the brightness values corresponding to the different gray scale intervals are different; determining a target bias current according to the gray scale interval corresponding to the current circuit to be charged;
and the output module is used for outputting the driving current corresponding to the target bias current to the amplifier, so that the amplifier outputs the target bias current to the current circuit to be charged.
9. An electronic device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the method of any of claims 1 to 6 when executing the computer program.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method of any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305008.0A CN112467835A (en) | 2020-11-18 | 2020-11-18 | Display panel charging method and device and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305008.0A CN112467835A (en) | 2020-11-18 | 2020-11-18 | Display panel charging method and device and display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112467835A true CN112467835A (en) | 2021-03-09 |
Family
ID=74837294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011305008.0A Pending CN112467835A (en) | 2020-11-18 | 2020-11-18 | Display panel charging method and device and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112467835A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937657A (en) * | 2009-06-12 | 2011-01-05 | 瑞萨电子株式会社 | Display control circuit |
| CN105304024A (en) * | 2015-11-30 | 2016-02-03 | 上海天马有机发光显示技术有限公司 | Display panel pixel current compensation method and system |
| CN107195271A (en) * | 2017-07-31 | 2017-09-22 | 京东方科技集团股份有限公司 | Driving chip and display panel |
| CN109473059A (en) * | 2019-01-24 | 2019-03-15 | 京东方科技集团股份有限公司 | Show electric current determination, compensation method, device, display device and storage medium |
| CN111369926A (en) * | 2020-03-18 | 2020-07-03 | Tcl华星光电技术有限公司 | Charging method and device for display panel |
-
2020
- 2020-11-18 CN CN202011305008.0A patent/CN112467835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937657A (en) * | 2009-06-12 | 2011-01-05 | 瑞萨电子株式会社 | Display control circuit |
| CN105304024A (en) * | 2015-11-30 | 2016-02-03 | 上海天马有机发光显示技术有限公司 | Display panel pixel current compensation method and system |
| CN107195271A (en) * | 2017-07-31 | 2017-09-22 | 京东方科技集团股份有限公司 | Driving chip and display panel |
| CN109473059A (en) * | 2019-01-24 | 2019-03-15 | 京东方科技集团股份有限公司 | Show electric current determination, compensation method, device, display device and storage medium |
| CN111369926A (en) * | 2020-03-18 | 2020-07-03 | Tcl华星光电技术有限公司 | Charging method and device for display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10074306B2 (en) | Remote compensation service method, remote compensation service system, OLED display device, and remote compensation server | |
| US9715850B2 (en) | Display panel optical compensating apparatus, display panel and display panel optical compensating method | |
| US11380282B2 (en) | Gamma voltage generating circuit, driver circuit and display device | |
| TWI528345B (en) | Gamma voltage generation unit and display device using the same | |
| US11056038B2 (en) | Gray-scale compensation device and method for combined pixels, and display device | |
| US9799299B2 (en) | Gamma voltage generation circuit, method and data driver | |
| CN107682682A (en) | A kind of chromaticity coordinates of automatic correction display screen and the method and relevant device of brightness | |
| CN101996618B (en) | Control method for increasing brightness consistency, brightness correction controller | |
| CN106531066A (en) | Gamma correction method and apparatus for display module group | |
| CN109257507B (en) | Method for adjusting screen brightness, mobile terminal and storage medium | |
| CN102097072A (en) | Driving method for local dimming of liquid crystal display device and apparatus using the same | |
| CN101419783A (en) | Gamma curve correcting method | |
| CN110544452A (en) | power supply time sequence control circuit and control method, display driving circuit and display device | |
| CN113228152A (en) | Device and method for controlling screen brightness | |
| CN113763857B (en) | Display panel driving method, driving device and computer equipment | |
| JP6925523B2 (en) | Display drive method and display drive device, liquid crystal display panel, computer-readable storage medium, computer program | |
| CN113495709A (en) | Color correction method, AP chip, terminal and storage medium | |
| US20180254003A1 (en) | Display data transmission method and apparatus, display panel drive method and apparatus | |
| CN112735343B (en) | Light-emitting component dimming control method and device and display device | |
| CN112467835A (en) | Display panel charging method and device and display panel | |
| CN114267312A (en) | Afterimage optimization circuit and method | |
| CN113870811B (en) | Display device, brightness adjusting method and device thereof, electronic equipment and storage medium | |
| CN112863424A (en) | Display screen brightness adjusting method and device and electronic equipment | |
| CN114694584B (en) | Display device and control method thereof | |
| CN115019716A (en) | Compensation method, device and equipment of display panel and storage medium |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |
|
| RJ01 | Rejection of invention patent application after publication |