CN110111735A - Driving method, driving chip and the display device of OLED display panel - Google Patents
Driving method, driving chip and the display device of OLED display panel Download PDFInfo
- Publication number
- CN110111735A CN110111735A CN201910471883.7A CN201910471883A CN110111735A CN 110111735 A CN110111735 A CN 110111735A CN 201910471883 A CN201910471883 A CN 201910471883A CN 110111735 A CN110111735 A CN 110111735A
- Authority
- CN
- China
- Prior art keywords
- dbv
- cathode voltage
- value
- voltage
- interval
- 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
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]
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses the driving method of OLED display panel, driving chip and display devices, when driving OLED display panel, it can be according to the preset section DBV, determine the first interval where the DBV received, and according to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section, the second cathode voltage for compensating the first cathode voltage is generated.First cathode voltage is that power management chip is generated according to the DBV received, first cathode voltage and the corresponding DBV of the second cathode voltage belong to first interval, utilize the second cathode voltage with high accuracy first cathode voltage low come compensation precision, display panel is driven jointly by two voltages, it is able to solve since the adjacent corresponding luminance difference of two display brightness values is away from larger, the technical issues of display screen flashing can be significantly seen when adjusting brightness, reaches the brightness uniformity variation of display screen when user adjusts brightness, the technical effect flashed does not occur.
Description
Technical field
The present invention relates to the driving method of field of display technology more particularly to OLED display panel, driving chip and displays
Device.
Background technique
Organic Light Emitting Diode (organic light-emitting diode, OLED) is a kind of emerging display skill
Art, compared with traditional liquid crystal display, the display screen using OLED production has broader visual angle, higher refresh rate and more
Thin size.
To provide the user with good usage experience, can preset in electronic equipment for adjusting OLED display screen
The display brightness value (display brightness value, DBV) of brightness, for example, the value of display brightness value can be set
Range is [0,100], and user can adjust the brightness of display screen by changing the display brightness value of OLED display screen.For example,
When light is stronger, user can increase the display brightness value of OLED display screen, allow users to see clearly in OLED display screen
The content of display；When light is weaker, user can reduce the display brightness value of OLED display screen, to avoid ambient light and show
The luminance difference of display screen is excessive and causes eyes of user shouting pain.
Since the display brightness of OLED display screen is determined by the voltage difference at the light emitting diode both ends of OLED display screen,
Therefore, the display brightness value of OLED display screen, the actually voltage at the light emitting diode both ends of adjustment OLED display screen are adjusted
Difference.The voltage difference at light emitting diode both ends and the cathode voltage (electro of data (data) voltage and light emitting diode
Luminescence source supply voltage, ELVSS) between difference it is associated.In the prior art, it adjusts aobvious
Show that brightness value is substantially exactly to adjust data voltage.However, between the corresponding data voltage of two adjacent display brightness values
Difference may be larger, and therefore, when adjusting the brightness of display screen, user may significantly see that display screen flashes.
Summary of the invention
The embodiment of the present invention is used by providing the driving method, driving chip and display device of a kind of OLED display panel
In the prior art since the adjacent corresponding luminance difference of two display brightness values is away from larger in solving, user is when adjusting brightness
The technical issues of significantly seeing display screen flashing.
In order to achieve the above object, in a first aspect, one embodiment of the invention provides a kind of driving of OLED display panel
Method, comprising:
Receive display brightness value DBV；
According to the preset section DBV, determine described in first interval locating for the DBV that receives；
According to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section, generates and use
In the second cathode voltage for compensating the first cathode voltage, first cathode voltage is received according to as power management chip
DBV generate, the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage and
The corresponding DBV of second cathode voltage is belonged in the first interval；
Second cathode voltage is exported to the cathode signal end of light emitting diode in the OLED display panel, so that
First cathode voltage and second cathode voltage drive the OLED display panel to shine jointly.
It, can be according to the corresponding relationship in the preset section DBV and predeterminated voltage section and described the in present embodiment
One section generates the second cathode voltage for compensating the first cathode voltage.Wherein, the first cathode voltage is power management chip
It is generated according to the DBV received, using the second cathode voltage with high accuracy first cathode voltage low come compensation precision, is passed through
Two voltages drive display panel jointly, are able to solve since the adjacent corresponding luminance difference of two display brightness values is away from larger,
User can significantly see the technical issues of display screen flashing when adjusting brightness, and display screen is bright when reaching user's adjusting brightness
There is not the technical effect flashed in degree even variation.
Optionally, the corresponding relationship and described first according to the preset section DBV and predeterminated voltage section
Section generates the second cathode voltage for compensating the first cathode voltage, comprising:
According to the endpoint value of the first interval, the corresponding relationship in the preset section DBV and predeterminated voltage section, institute is determined
State the corresponding voltage value of endpoint value；
According to the endpoint value of the first interval and the corresponding voltage value of the endpoint value, second cathode voltage is calculated
Value；
According to the value of second cathode voltage, second cathode voltage is generated.
Optionally, the endpoint value and the corresponding voltage value of the endpoint value according to the first interval, described in calculating
The value of second cathode voltage, comprising:
According to the endpoint value of the first interval, the corresponding voltage value of the endpoint value, the determining and first interval pair
The first function answered；
According to the first function and the DBV received, the value of second cathode voltage is obtained.
In above embodiment, the firstth area can be determined according to the corresponding voltage value of endpoint value and endpoint value of first interval
Between corresponding first function, can accurately calculate the value of the second cathode voltage using functional relation, improve the second cathode
The accuracy of voltage.
Optionally, the first function are as follows:
Vs=(V1-V2)/d* (D-DBV)
Wherein, Vs is the value of the second cathode voltage, and DBV is the display brightness value received, and d is firstth area
Between siding-to-siding block length, D be the first interval in display brightness value value in maximum value, V2 be and the first interval
The corresponding preset voltage value of minimum value, V1 are preset voltage value corresponding with the maximum value of the first interval, and V1 is greater than V2.
Present embodiment gives the common version of the first function for all default sections DBV, to bring into not
The specific value in the same default section DBV can obtain the corresponding first function in each default section DBV, simplify and determine first
The process of function improves the execution speed of this driving method.
Optionally, the preset section DBV includes three sections, the locating for the DBV received described in the determination
One section, comprising:
The endpoint value for comparing the DBV and three sections received, determine described in the locating for the DBV that receives
One section.
In present embodiment, defines that the preset section DBV includes three sections, according to the endpoint value for comparing section and connect
The DBV received is just capable of determining that first interval, gives a kind of method of simple determining first interval, simplifies this driving side
The implementation procedure of method, and accelerate to execute the speed of this driving method.
Optionally, the method also includes:
Before generation is used to compensate second cathode voltage of the first cathode voltage, according to the DBV received
With the endpoint value of the first interval, judge whether first cathode voltage needs to compensate；
When the DBV received is equal to the endpoint value of the first interval, determine that first cathode voltage is not required to
It compensates.
In present embodiment, it can be determined that whether the first cathode voltage, which needs, compensates, and can not give birth to when needing not compensate for
At the second cathode voltage, to reduce the time of driving display panel, the luminous speed of driving display panel is improved.
Second aspect, one embodiment of the invention provide a kind of driving chip of OLED display panel, comprising:
Circuit is received, for receiving display brightness value DBV；
Compensation circuit, for determining described receive first locating for the DBV that circuit receives according to the preset section DBV
Section, and, it is generated and is used according to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section
In the second cathode voltage for compensating the first cathode voltage, first cathode voltage is received according to as power management chip
DBV generate, the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage and
The corresponding DBV of second cathode voltage is belonged in the first interval；
Output circuit, for exporting second cathode voltage to the yin of light emitting diode in the OLED display panel
Pole signal end, so that first cathode voltage and second cathode voltage drive the OLED display panel to shine jointly；
Memory, for storing the preset section DBV and the preset section DBV and the predeterminated voltage
The corresponding relationship in section.
Optionally, the compensation circuit, comprising:
Compare sub-circuit, the first interval where DBV for receiving described according to the preset section DBV, determining；
Sub-circuit is calculated, for the endpoint value and the corresponding voltage value of the endpoint value according to the first interval, is calculated
The value of second cathode voltage；
Voltage generates sub-circuit, for the value according to second cathode voltage, generates second cathode voltage.
Optionally, the calculating sub-circuit, comprising:
First arithmetic device, for endpoint value, the corresponding voltage value of the endpoint value according to the first interval, and,
The corresponding relationship of predeterminated voltage section and function determines first function corresponding with the first interval；
Second arithmetic device, for obtaining second cathode voltage according to the first function and the DBV received
Value.
Optionally, the voltage generates sub-circuit, including multinomial selection switch, resistance string and controller；
The resistance string, including multiple resistors are provided with an input port between every two adjacent resistor；
The controller controls the switch and the resistance string for the value according to second cathode voltage
First input port connection in multiple input ports, when the switch is connect with the first input port, the voltage
The voltage value for generating sub-circuit output is the value of second cathode voltage.
Optionally, the driving chip further include:
Decision circuitry, for generating second cathode voltage for compensating the first cathode voltage in the compensation circuit
Before, according to the endpoint value of the DBV received and the first interval, judge whether first cathode voltage needs to mend
It repays；When the DBV received is equal to the endpoint value of the first interval, determine that first cathode voltage does not need to mend
It repays.
The third aspect, one embodiment of the invention provide a kind of display device, including power management chip, display panel,
And the driving chip as described in above-mentioned second aspect.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
In the present invention, when driving OLED display panel, the DBV institute received can be determined according to the preset section DBV
First interval, it is raw and according to the corresponding relationship in the preset section DBV and predeterminated voltage section and the first interval
At the second cathode voltage for compensating the first cathode voltage.Wherein, the first cathode voltage is that power management chip meeting basis connects
What the DBV that receives was generated, the first cathode voltage and the corresponding DBV of the second cathode voltage belong to first interval, allow the first cathode
Voltage and the second cathode voltage drive the display panel to shine jointly, i.e., using the second cathode voltage with high accuracy come compensation precision
The first low cathode voltage drives display panel by two voltages jointly, is able to solve due to two adjacent display brightness
It is worth corresponding luminance difference away from the technical issues of larger, user can significantly see display screen flashing when adjusting brightness, reaches use
The brightness uniformity of display screen changes, the technical effect flashed does not occur when family adjusts brightness.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the driving method of OLED display panel provided in an embodiment of the present invention；
Fig. 2 a is the relation schematic diagram between the value and driving voltage of DBV in the prior art；
Relationship signal of Fig. 2 b between the preset section DBV provided in an embodiment of the present invention and the brightness of display panel
Figure；
Relationship signal of Fig. 3 a between the preset section DBV provided in an embodiment of the present invention and predeterminated voltage section
Figure；
Relationship of Fig. 3 b between the preset section DBV provided in an embodiment of the present invention and preset first cathode voltage is shown
It is intended to；
Fig. 4 is a kind of flow chart of the method for value for calculating the second cathode voltage provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of the driving chip of OLED display panel provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that a kind of voltage provided in an embodiment of the present invention generates sub-circuit；
Fig. 7 is an a kind of schematic diagram of display device provided in an embodiment of the present invention；
Fig. 8 is a kind of another schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
In order to solve the above-mentioned technical problem, the general thought of the technical solution in the embodiment of the present invention is as follows:
The driving method, driving chip and display device of a kind of OLED display panel are provided, specifically, driving method packet
It includes:
Receive display brightness value DBV；
According to the preset section DBV, determine described in first interval locating for the DBV that receives；
According to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section, generates and use
In the second cathode voltage for compensating the first cathode voltage, first cathode voltage is received according to as power management chip
DBV generate, the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage and
The corresponding DBV of second cathode voltage is belonged in the first interval；
Second cathode voltage is exported to the cathode signal end of light emitting diode in the OLED display panel, so that
First cathode voltage and second cathode voltage drive the OLED display panel to shine jointly.
Driving method provided by the invention, according to the preset section DBV, determines during driving OLED display panel
First interval where the DBV received, according to the corresponding relationship in the preset section DBV and predeterminated voltage section and described
First interval generates the second cathode voltage for compensating the first cathode voltage.First cathode voltage is power management chip meeting
It is generated according to the DBV that receives, the first cathode voltage and the corresponding DBV of the second cathode voltage belong to first interval, allow the
One cathode voltage and the second cathode voltage drive the display panel to shine jointly, i.e., are mended using the second cathode voltage with high accuracy
The first low cathode voltage of precision is repaid, drives display panel jointly by two voltages, is able to solve since adjacent two aobvious
Show the corresponding luminance difference of brightness value away from larger, the technical issues of user can significantly see display screen flashing when adjusting brightness,
Reach the brightness uniformity variation of display screen when user adjusts brightness, the technical effect flashed occur.
Driving method provided by the invention can be applied to have in the electronic equipment of display screen, which includes:
Mobile phone, computer, tablet computer etc., the display screen of the electronic equipment is by Organic Light Emitting Diode (organic light-
Emitting diode, OLED) display panel composition, OLED includes passive organic light-emitting diode (passive matrix
Rganic light-emitting diode, PMOLED) and active organic light-emitting diode (active matrix
Rganic light-emitting diode, AMOLED).
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than complete
The embodiment in portion.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention one provides a kind of driving method of OLED display panel, including following step
It is rapid:
Step S110 receives display brightness value DBV；
Step S120, according to the preset section DBV, determine described in first interval locating for the DBV that receives；
Step S130, according to the corresponding relationship and firstth area in the preset section DBV and predeterminated voltage section
Between, generate for compensating the second cathode voltage of the first cathode voltage, first cathode voltage by power management chip according to
The DBV that receives is generated, and the precision of second cathode voltage is higher than the precision of first cathode voltage, and described first
Cathode voltage and the corresponding DBV of second cathode voltage are belonged in the first interval；
Step S140 exports second cathode voltage to the cathode letter of light emitting diode in the OLED display panel
Number end so that first cathode voltage and second cathode voltage drive jointly the OLED display panel shine.
ELVSS in the prior art is the fixed voltage generated by power management chip, so adjusting display brightness
Value is to change data voltage in the case where ELVSS is constant, to achieve the purpose that the voltage difference for changing light emitting diode both ends.
The relationship in the prior art between the value of DBV and data voltage Vdata is given in Fig. 2 a, as shown in Figure 2 a, DBV is divided into 3
A section, the corresponding data voltage in each section, section [0, D1] corresponding data voltage are V1, and section (D1, D2] it is corresponding
Data voltage be V2, section (D2, D3] corresponding data voltage is V3, wherein V1 is greater than V2 and is greater than V3, a section DBV
Interior all DBV values all correspond to the same data voltage, for example, D1 be equal to 30, D2 be equal to 60, then DBV value be 35,
36,50 or 60 corresponding data voltages are all V2.There are gaps for the corresponding data voltage in the two neighboring section DBV, due to data
There are gap, the brightness of the corresponding display panel of data voltage there is gap for voltage, and for example, section (D1, D2] corresponding number
According to voltage V2, and section (D2, D3] corresponding data voltage V3, D2 is equal to 60, D3 and is equal to 100, the corresponding number in DBV value 60
Be V2 according to voltage, and corresponding data voltage is V3 when DBV value is 61, user by DBV from 60 adjust to 61 when, data electricity
Pressure becomes V3 from V2, and user can significantly see the brightness suddenly change of screen, that is, screen flicker.
By the driving method of OLED display screen (that is, light-emitting diodes of the display brightness of OLED display screen by OLED display screen
What the voltage difference at pipe both ends determined), it is known that, change any one voltage in the cathode voltage of data voltage and light emitting diode
Or the two voltages are changed simultaneously, the effect for changing the voltage difference at light emitting diode both ends may be implemented.Therefore, in this Shen
It please propose that user adjusts DBV while changing data voltage, change the cathode voltage of light emitting diode in embodiment, thus
Reduce the difference between the voltage difference at the corresponding light emitting diode both ends of two adjacent display brightness values, i.e. reduction two is adjacent
The corresponding display panel of display brightness value brightness between luminance difference, be able to solve due to two adjacent display brightness values
Corresponding luminance difference is away from the technical issues of larger, user can significantly see display screen flashing when adjusting brightness.
Step S110 is first carried out.
The DBV that user can be provided by electronic equipment adjusts control key to adjust DBV, such as the DBV that electronic equipment provides
Adjusting control key is exactly volume key, and the value of DBV is increased or decreased by pressing volume key.User can also pass through electronic equipment
The input interface of offer inputs the value of DBV, user specifically how to be interacted with electronic equipment adjusts DBV can also be with reference to existing
There is the method in technology, is not limited thereto.
After user's adjusting display brightness value DBV, step S110 is executed, receives display brightness value DBV.For example, electronics is set
Standby is mobile phone, and mobile phone receives DBV by cell phone mainboard.
After receiving display brightness value DBV, the power management chip in electronic equipment can be raw according to the DBV received
At the first cathode voltage, the method for generating the first cathode voltage can be found in the prior art, and no further details to be given herein.
After executing the step S110, step S120 is executed, that is, according to the preset section DBV, receive described in determination
First interval locating for DBV.Fig. 2 b illustratively gives the pass between the preset section DBV and the brightness Lux of display panel
System, total value range of DBV is [0,100] in Fig. 2 b, is preset with 3 sections DBV, and first preset section DBV takes
Being worth range is [0,30], and the corresponding brightness value range in first section DBV set is [0, L1], second preset area DBV
Between value range be (30,70], the brightness value range in second preset section DBV be (L1, L2], third is preset
The value range in the section DBV be (70,100], the brightness value range in second preset section DBV be (L2, L3].Firstth area
Between refer to section locating for the DBV received in the preset section DBV, the value of the DBV received by comparing and default
The section DBV endpoint value, it will be able to determine which section the DBV that receives is in.
When determining first interval, if the preset section DBV includes three sections, it is determined that locating for the DBV received
First interval, comprising:
Compare the endpoint value in DBV and three section received, first interval locating for the DBV received described in determination.
Continue to continue to use 3 sections DBV in precedent, by taking the value of the DBV received is 80 as an example, the endpoint in 3 sections
Value include 0,30,70 and 100,80 and 0,30,70 and 100 are compared, obtain 80 this value be in section (70,
100] in, it is determined that the first interval gone out is exactly the preset section DBV of third.
In the present embodiment, define that the preset section DBV includes three sections, according to the endpoint value and reception for comparing section
To DBV be just capable of determining that first interval, give a kind of method of simple determining first interval, simplify this driving method
Implementation procedure, and accelerate to execute the speed of this driving method.
It should be noted that the quantity in the preset section DBV is not limited in 3, it can be according to the section actual setting DBV
Quantity.
After determining first interval, the first yin can be judged according to the endpoint value of the DBV and first interval that receive
Whether pole tension, which needs, compensates, wherein when the DBV received is equal to the endpoint value of first interval, determines the first cathode voltage
It needs not compensate for, for example, continuing to continue to use 3 sections DBV in precedent, if it is preset DBV that the DBV received, which is equal to 70,70,
The endpoint value in section, so that the first cathode voltage of judgement at this time does not need to compensate.
In the present embodiment, it can be determined that whether the first cathode voltage, which needs, compensates, and can not generate when needing not compensate for
Second cathode voltage improves the luminous speed of driving display panel to reduce the time of driving display panel.
After executing the step S120, step S130 is continued to execute, that is, according to the preset section DBV and default electricity
Corresponding relationship and the first interval between pressure area generate the second cathode voltage for compensating the first cathode voltage, described
The DBV that first cathode voltage is received according to as power management chip is generated, and the precision of second cathode voltage is higher than
The precision of first cathode voltage, first cathode voltage and the corresponding DBV of second cathode voltage belong to described
In first interval.
Fig. 3 a illustratively gives a kind of corresponding relationship in the preset section DBV and predeterminated voltage section, it can be seen that
Predeterminated voltage Vh and preset DBV in Fig. 3 a is directly proportional.It, can be according to the preset area DBV after first interval has been determined
Between and predeterminated voltage section corresponding relationship, the corresponding relationship of first interval and predeterminated voltage is obtained, further according to the DBV received
Value, it will be able to electric from the second cathode corresponding with the DBV received is obtained in the corresponding relationship of first interval and predeterminated voltage
The value of pressure, and then generate the second cathode voltage.
It, can be according to the endpoint value of first interval, pair in the preset section DBV and predeterminated voltage section in implementation process
It should be related to, determine the corresponding voltage value of the endpoint value of first interval；
According to the endpoint value of first interval and the corresponding voltage value of endpoint value, the value of the second cathode voltage is calculated；
According to the value of the second cathode voltage, the second cathode voltage is generated.
It specifically, can be according to the preset section DBV and default electricity under the premise of obtaining the endpoint value of first interval
Corresponding relationship between pressure area obtains the corresponding voltage value of endpoint value of first interval, with the preset section DBV in Fig. 3 b and in advance
If the corresponding relationship of voltage range, first interval are the endpoint value difference of first interval for this section 0~D1 in Fig. 3 b
For 0 and D1, according to the corresponding relationship it is found that corresponding voltage value is 0 when endpoint value is 0, when endpoint value is D1, corresponding voltage
Value is V1.
After the corresponding voltage value of endpoint value that first interval has been determined, according to the endpoint value, the corresponding electricity of endpoint value
Pressure value can calculate the value of the second cathode voltage, continue to continue to use precedent, the endpoint value of first interval is respectively 0 and D1, end
The corresponding voltage value of point value is respectively 0 and V1, and the value of the DBV received is D0, in first interval, the value and electricity of DBV
Pressure value is proportional, thus the second cathode voltage Vs=V0-V1/D1*D0.It should be noted that according to the preset area DBV
Between difference with the corresponding relationship in predeterminated voltage section, the mode for calculating the second cathode voltage is also different, for example, in first interval
Interior, the value of DBV and the relationship of voltage value can also be inverse relation, logarithmic relationship, exponential relationship, power function relationship etc., root
According to the difference of the relationship, the method that the value of the second cathode voltage of calculating uses is also different, it is not limited here.Calculating
After the value of two cathode voltages, it will be able to generate the second cathode voltage according to the value.
Referring to fig. 4, in implementation process, the value of the second cathode voltage can be calculated according to following steps, comprising:
Step S210, it is determining with described the according to the endpoint value of the first interval, the corresponding voltage value of the endpoint value
The corresponding first function in one section；
Step S220 obtains taking for second cathode voltage according to the first function and the DBV received
Value.
It, can after the value of the corresponding voltage value of endpoint value, endpoint value and cathode voltage that first interval has been determined
To execute step S210.It, can be according to the preset section DBV and predeterminated voltage when determining the corresponding first function of first interval
The corresponding relationship in section, obtains first function, for example, the value and voltage value of DBV is proportional, root in first interval
First function is obtained according to proportional relation are as follows:
Vs=(V1-0)/(D1-0) * D0
Wherein, Vs is the second cathode voltage, and the endpoint value 0 and D1 of first interval are respectively the corresponding voltage value of endpoint value
The value of respectively 0 and V1, the DBV received are D0.
In above-described embodiment, first interval can be determined according to the corresponding voltage value of endpoint value and endpoint value of first interval
Corresponding first function can accurately calculate the value of the second cathode voltage using functional relation, improve the second cathode electricity
The accuracy of pressure.
In addition to this, function corresponding with each preset section DBV can be stored in advance, determining that first interval is corresponding
First function when, so that it may according to first interval, directly acquire function corresponding with first interval.For example, the area DBV prestored
Between corresponding function are as follows:
Vs=(V1-V2)/d* (D-DBV)
Wherein, Vs is the value of the second cathode voltage, and DBV is the display brightness value received, and d is firstth area
Between siding-to-siding block length, D be the first interval in display brightness value value in maximum value, V2 be and the first interval
The corresponding preset voltage value of minimum value, V1 are preset voltage value corresponding with the maximum value of the first interval, and V1 is greater than V2.
By taking the preset section DBV in Fig. 3 a as an example, 3 preset sections DBV are shared, first default section DBV
Endpoint value is 0 and D1, and the endpoint value in second default section DBV is D1 and D2, and the endpoint value in the default section DBV of third is D2
And the corresponding preset voltage value of D3, D1 is V11, the corresponding preset voltage value of D2 is V22, and the corresponding preset voltage value of D3 is V33,
Bring the value of the corresponding voltage value of endpoint value, endpoint value in each default section DBV and the first cathode voltage into above-mentioned prestore
The corresponding function in the section DBV in, so that it may obtain each default corresponding function in the section DBV, then first default DBV
The corresponding first function in section are as follows:
Vs=(V11-0)/(D1-0) * (D1-DBV)
The corresponding first function in second default section DBV are as follows:
Vs=(V22-V11)/(D2-D1) * (D2-DBV)
The default corresponding first function in the section DBV of third are as follows:
Vs=(V33-V22)/(D3-D2) * (D3-DBV)
The common version of the first function for all default sections DBV is given in the present embodiment, to bring into not
The specific value in the same default section DBV can obtain the corresponding first function in each default section DBV, simplify and determine first
The process of function improves the execution speed of this driving method.
After executing the step S210, step S220 is executed, that is, according to the first function and the DBV received,
Obtain the value of second cathode voltage.
After obtaining first function, the value for receiving DBV is brought into first function, can calculate the second cathode electricity
The value of pressure, for example, continuing to continue to use in previous example, first function is Vs=V00- (V33-V22)/(D3-D2) * DBV, D3 etc.
In 100, D2 be equal to 70, V33 be equal to 3.8, V22 be equal to 2.7, the DBV received be equal to 85, then the second cathode voltage Vs be equal to-
0.55.It should be noted that if the DBV received is equal to the endpoint value in some preset section DBV, at this time calculated second
The value of cathode voltage is 0, is equivalent to the first cathode voltage at this time and does not need to compensate.
After executing the step S130, step S140 is executed, that is, export second cathode voltage to the OLED
The cathode signal end of light emitting diode in display panel, so that first cathode voltage and second cathode voltage drive jointly
The OLED display panel is moved to shine.
The second cathode voltage generated is by the cathode information signal for the Light-Emitting Diode being output in OLED display panel
End, so that the first cathode voltage and the second cathode voltage can drive OLED display panel to shine jointly, it should be noted that the
The effect of two cathode voltages be compensation the first cathode voltage, although in above-described embodiment calculated second cathode voltage value
For positive number, but it includes positive compensation and Contrary compensation two ways that the second cathode voltage, which compensates the first cathode voltage, wherein positive
When compensation, the first cathode voltage of brightness ratio for the Light-Emitting Diode that the first cathode voltage and the second cathode voltage drive jointly is alone
Brightness when driving is high, and when Contrary compensation, the Light-Emitting Diode that the first cathode voltage and the second cathode voltage drive jointly
Brightness when the first cathode voltage of brightness ratio drives alone is low.
Specifically, the second cathode voltage is to the compensation way of the first cathode voltage and the value phase of the first cathode voltage
It closes, although the first cathode voltage is that power management chip is generated according to the DBV received, but power management chip is according to pre-
If the section DBV and the corresponding relationship of default first cathode voltage generate the first cathode voltage, a preset section pair DBV
The value of same first cathode voltage is answered, as shown in Figure 3b, section [0, D1] corresponding first cathode voltage Vf is V1.It is setting
It, can be as the first cathode voltage Vf be set in Fig. 3 b when setting the preset section DBV and presetting the corresponding relationship of the first cathode voltage
Be set to the section DBV can corresponding voltage maximum value, the second cathode voltage is exactly reversed to the compensation of the first cathode voltage at this time
Compensation, if setting by the first cathode voltage Vf be set as the section DBV can corresponding voltage minimum value, the second cathode voltage pair
The compensation of first cathode voltage is exactly positive compensation, if setting set the section DBV for the first cathode voltage Vf can corresponding electricity
The median of pressure, then the second cathode voltage is exactly that positive compensation and Contrary compensation can all exist to the compensation of the first cathode voltage.
When the first cathode voltage and the second cathode voltage drive OLED display panel to shine jointly, in OLED display panel
The voltage that is an actually-received of light emitting diode can indicate with the following methods:
Vtarget=Vf ± Vs=Vf ± (V1-V2)/d* (D-DBV)
Wherein, Vtarget is the value of voltage that the light emitting diode in OLED display panel is an actually-received, and Vf is the
The value of one cathode voltage, Vs are the value of the second cathode voltage, and DBV is the display brightness value received, and d is described the
The siding-to-siding block length in one section, D are the maximum value in the display brightness value value in the first interval, and V2 is and firstth area
Between the corresponding preset voltage value of minimum value, V1 is preset voltage value corresponding with the maximum value of the first interval, and V1 is greater than
V2。
In forward direction compensation, Vtarget=Vf+Vs, when Contrary compensation, Vtarget=Vf-Vs.For example, the first yin
Pole tension is 3.8V, and the second cathode voltage is 0.225V, when compensation way is positive compensation, voltage that Light-Emitting Diode receives
Vtarget=3.8+0.225=4.025, when compensation way is Contrary compensation, Vtarget=3.8-0.225=3.575.
Based on the same inventive concept, second embodiment of the present invention provides a kind of driving chips 50 of OLED display panel, should
The specific embodiment that driving chip executes the driving method of OLED display panel can be found in retouching for above method embodiment part
It states, overlaps will not be repeated, as shown in figure 5, the driving chip 50 includes:
Circuit 51 is received, for receiving display brightness value DBV；
Compensation circuit 52, for according to the preset section DBV, determining locating for DBV that the reception circuit receives the
One section, and, it is generated according to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section
For compensating the second cathode voltage of the first cathode voltage, first cathode voltage is by power management chip according to the reception
The DBV arrived is generated, and the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage
DBV corresponding with second cathode voltage is belonged in the first interval；
Output circuit 53, for exporting second cathode voltage to light emitting diode in the OLED display panel
Cathode signal end, so that first cathode voltage and second cathode voltage drive the OLED display panel to send out jointly
Light；
Memory 54, for storing the preset section DBV and the preset section DBV and the default electricity
Corresponding relationship between pressure area.
Optionally, the compensation circuit, comprising:
Compare sub-circuit, the first interval where DBV for receiving described according to the preset section DBV, determining；
Sub-circuit is calculated, for the endpoint value and the corresponding voltage value of the endpoint value according to the first interval, is calculated
The value of second cathode voltage；
Voltage generates sub-circuit, for the value according to second cathode voltage, generates second cathode voltage.
Optionally, the calculating sub-circuit, comprising:
First arithmetic device, for endpoint value, the corresponding voltage value of the endpoint value according to the first interval, and,
The corresponding relationship of predeterminated voltage section and function determines first function corresponding with the first interval；
Second arithmetic device, for obtaining second cathode voltage according to the first function and the DBV received
Value.
Optionally, the voltage generates sub-circuit, including multinomial selection switch, resistance string and controller；
The resistance string, including multiple resistors are provided with an input port between every two adjacent resistor；
The controller controls the switch and the resistance string for the value according to second cathode voltage
First input port connection in multiple input ports, when the switch is connect with the first input port, the voltage
The voltage value for generating sub-circuit output is the value of second cathode voltage.
Specifically, giving a kind of schematic diagram of voltage generation sub-circuit 60, including multinomial selection switch 61, electricity in Fig. 6
Resistance string 62 and controller 63, resistance string can be made of 2~4096 resistors, and the particular number of resistor can be according to reality
Demand setting, this is not restricted, and the resistance string 62 in Fig. 6 includes 20 resistors, multinomial that switch 61 is selected to select for 21
Switch, so that user can select to open or close the compensation function of the first cathode voltage, it is when compensation function is closed, i.e., multinomial
When selection switch 61 switches to port 1 (i.e. the port Default), driving chip does not generate the second cathode voltage, OLED at this time
Display panel is only driven alone by the first cathode voltage, and when compensation function is opened, multinomial selection switch 61 at this time switches
To the port in addition to the port Default, driving chip at this time can generate the second cathode for compensating the first cathode voltage
Voltage, to drive OLED display panel jointly by the first cathode voltage and the second cathode voltage.
Optionally, the driving chip further include:
Decision circuitry, for generating second cathode voltage for compensating the first cathode voltage in the compensation circuit
Before, according to the endpoint value of the DBV received and the first interval, judge whether first cathode voltage needs to mend
It repays；When the DBV received is equal to the endpoint value of the first interval, determine that first cathode voltage does not need to mend
It repays.
Referring to Fig. 7, based on the same inventive concept, the embodiment of the present invention three provides a kind of display device 70, including power supply
Managing chip 71, display panel 72 and the driving chip 73 as described in above-described embodiment two.
Optionally, referring to Fig. 8, display device 70 further includes main 74 (main flexible printed of flexible print circuit
Circuit, MFPC), flip chip 75 (chip on film, COF), connector 76Connector, wherein power management core
Piece 71 is connected to main flexible print circuit 74 by connector 76, and main flexible print circuit 74 is connect with flip chip 75, flip
Film 75 is connect with display panel 72, so that the first cathode voltage that power management chip 71 generates can be delivered to display panel
72.Driving chip 73 is connect with flip chip 75, so that the second cathode voltage can also be delivered to display panel 72.
Specifically, power management chip 71 can be used HIP6301, IS6537, RT9237, ADP3168, KA7500,
The chip of the models such as TL494.Flip chip 75 are used to driving chip 73 being fixed on main flexible print circuit 74.Display panel
72 be OLED display panel.
Optionally, display device further includes voltage combiner circuit, and the voltage combiner circuit is used for first cathode
Voltage and second cathode voltage synthesize third cathode voltage, and the third cathode voltage is exported and is shown to the OLED
The cathode of the light emitting diode of panel, to drive the OLED display panel to shine.It should be noted that utilizing the first cathode
It, can be by the way that voltage combiner circuit be arranged, first by the first cathode electricity when voltage and the second cathode voltage driving OLED display panel
Pressure and the second cathode voltage are collectively referred to as a third cathode voltage, to be delivered to the yin of the light emitting diode of OLED display panel
Extreme mouth is third cathode voltage, can also be shown using the first cathode voltage and the second cathode voltage are all delivered to OLED
The mode at the cathode signal end of the light emitting diode of panel drives OLED display panel, and the cathode signal end can receive two at this time
A voltage.
Technical solution in the embodiments of the present invention, at least have the following technical effects or advantages:
, can be according to the preset section DBV when driving OLED display panel in the embodiment of the present invention, determination receives
DBV where first interval, and according to the corresponding relationship and described first in the preset section DBV and predeterminated voltage section
Section generates the second cathode voltage for compensating the first cathode voltage.Wherein, the first cathode voltage is power management chip meeting
It is generated according to the DBV that receives, the first cathode voltage and the corresponding DBV of the second cathode voltage belong to first interval, allow the
One cathode voltage and the second cathode voltage drive the display panel to shine jointly, i.e., are mended using the second cathode voltage with high accuracy
The first low cathode voltage of precision is repaid, drives display panel jointly by two voltages, is able to solve since adjacent two aobvious
Show the corresponding luminance difference of brightness value away from larger, the technical issues of user can significantly see display screen flashing when adjusting brightness,
Reach the brightness uniformity variation of display screen when user adjusts brightness, the technical effect flashed occur.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of driving method of OLED display panel characterized by comprising
Receive display brightness value DBV；
According to the preset section DBV, determine described in first interval locating for the DBV that receives；
According to the corresponding relationship and the first interval in the preset section DBV and predeterminated voltage section, generate for mending
The second cathode voltage of the first cathode voltage is repaid, what first cathode voltage was received according to as power management chip
DBV is generated, and the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage and institute
The corresponding DBV of the second cathode voltage is stated to belong in the first interval；
Second cathode voltage is exported to the cathode signal end of light emitting diode in the OLED display panel, so that described
First cathode voltage and second cathode voltage drive the OLED display panel to shine jointly.
2. the method as described in claim 1, which is characterized in that described according to the preset section DBV and predeterminated voltage area
Between corresponding relationship and the first interval, generate for compensating the second cathode voltage of the first cathode voltage, comprising:
According to the endpoint value of the first interval, the corresponding relationship in the preset section DBV and predeterminated voltage section, the end is determined
The corresponding voltage value of point value；
According to the endpoint value of the first interval and the corresponding voltage value of the endpoint value, taking for second cathode voltage is calculated
Value；
According to the value of second cathode voltage, second cathode voltage is generated.
3. method according to claim 2, which is characterized in that the endpoint value and the endpoint according to the first interval
It is worth corresponding voltage value, calculates the value of second cathode voltage, comprising:
According to the endpoint value of the first interval, the corresponding voltage value of the endpoint value, determination is corresponding with the first interval
First function；
According to the first function and the DBV received, the value of second cathode voltage is obtained.
4. method as claimed in claim 3, which is characterized in that the first function are as follows:
Vs=(V1-V2)/d* (D-DBV)
Wherein, Vs is the value of the second cathode voltage, and DBV is the display brightness value received, and d is the first interval
Siding-to-siding block length, D are the maximum value in the display brightness value value in the first interval, and V2 is the minimum with the first interval
It is worth corresponding preset voltage value, V1 is preset voltage value corresponding with the maximum value of the first interval, and V1 is greater than V2.
5. method as claimed in claim 4, which is characterized in that the preset section DBV includes three sections, the determination
First interval locating for the DBV received, comprising:
Compare the endpoint value of the DBV and three sections received, the firstth area locating for the DBV received described in determination
Between.
6. the method according to claim 1 to 5, which is characterized in that the method also includes:
Before generation is used to compensate second cathode voltage of the first cathode voltage, according to the DBV received and institute
The endpoint value for stating first interval, judges whether first cathode voltage needs to compensate；
When the DBV received is equal to the endpoint value of the first interval, determine that first cathode voltage does not need to mend
It repays.
7. a kind of driving chip of OLED display panel characterized by comprising
Circuit is received, for receiving display brightness value DBV；
Compensation circuit, for according to the preset section DBV, determining first interval locating for DBV that the reception circuit receives,
And it is generated according to the preset section DBV and the corresponding relationship in predeterminated voltage section and the first interval for compensating
Second cathode voltage of the first cathode voltage, the DBV that first cathode voltage is received according to as power management chip
It generates, the precision of second cathode voltage is higher than the precision of first cathode voltage, first cathode voltage and described
The corresponding DBV of second cathode voltage is belonged in the first interval；
Output circuit, for exporting second cathode voltage to the cathode letter of light emitting diode in the OLED display panel
Number end so that first cathode voltage and second cathode voltage drive jointly the OLED display panel shine；
Memory, for storing the preset section DBV and the preset section DBV and the predeterminated voltage section
Corresponding relationship.
8. driving chip as claimed in claim 7, which is characterized in that the compensation circuit, comprising:
Compare sub-circuit, the first interval where DBV for receiving described according to the preset section DBV, determining；
Sub-circuit is calculated, for the endpoint value and the corresponding voltage value of the endpoint value according to the first interval, described in calculating
The value of second cathode voltage；
Voltage generates sub-circuit, for the value according to second cathode voltage, generates second cathode voltage.
9. driving chip as claimed in claim 8, which is characterized in that the calculating sub-circuit, comprising:
First arithmetic device, for endpoint value, the corresponding voltage value of the endpoint value according to the first interval, and, it is described
The corresponding relationship of predeterminated voltage section and function determines first function corresponding with the first interval；
Second arithmetic device, for obtaining taking for second cathode voltage according to the first function and the DBV received
Value.
10. driving chip as claimed in any one of claims 7-9, which is characterized in that the voltage generates sub-circuit, including
Multinomial selection switch, resistance string and controller；
The resistance string, including multiple resistors are provided with an input port between every two adjacent resistor；
The controller, for the value according to second cathode voltage, the control switch is multiple with the resistance string
First input port connection in input port, when the switch is connect with the first input port, the voltage is generated
The voltage value of sub-circuit output is the value of second cathode voltage.
11. driving chip as claimed in claim 10, which is characterized in that the driving chip further include:
Decision circuitry, for the compensation circuit generate for compensate the first cathode voltage second cathode voltage it
Before, according to the endpoint value of the DBV received and the first interval, judge whether first cathode voltage needs to mend
It repays；When the DBV received is equal to the endpoint value of the first interval, determine that first cathode voltage does not need to mend
It repays.
12. a kind of display device, which is characterized in that including power management chip, display panel and as claim 7-11 appoints
Driving chip described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471883.7A CN110111735B (en) | 2019-05-31 | 2019-05-31 | Driving method and driving chip of OLED display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471883.7A CN110111735B (en) | 2019-05-31 | 2019-05-31 | Driving method and driving chip of OLED display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110111735A true CN110111735A (en) | 2019-08-09 |
| CN110111735B CN110111735B (en) | 2020-08-18 |
Family
ID=67493521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910471883.7A Active CN110111735B (en) | 2019-05-31 | 2019-05-31 | Driving method and driving chip of OLED display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110111735B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724735A (en) * | 2020-07-22 | 2020-09-29 | 京东方科技集团股份有限公司 | Driving voltage adjusting method and display device |
| CN111798813A (en) * | 2020-07-20 | 2020-10-20 | 昆山国显光电有限公司 | Brightness adjusting method and device of display device and display device |
| WO2020249066A1 (en) * | 2019-06-14 | 2020-12-17 | 华为技术有限公司 | Voltage regulation method and electronic device |
| CN113450693A (en) * | 2021-07-02 | 2021-09-28 | 昆山国显光电有限公司 | Driving device and driving method of display panel and display device |
| CN114387920A (en) * | 2022-02-16 | 2022-04-22 | 武汉华星光电半导体显示技术有限公司 | OLED display device and brightness driving method thereof |
| US11798494B2 (en) | 2022-02-16 | 2023-10-24 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | OLED display device and brightness driving method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015088412A (en) * | 2013-11-01 | 2015-05-07 | 有限会社大平技研 | Led drive circuit |
| CN106297657A (en) * | 2016-09-27 | 2017-01-04 | 广东欧珀移动通信有限公司 | The brightness adjusting method of a kind of AMOLED display screen and terminal |
| US20170132988A1 (en) * | 2015-11-06 | 2017-05-11 | Le Holdings (Beijing) Co., Ltd. | Control method and device for changing brightness |
| CN107358909A (en) * | 2017-07-01 | 2017-11-17 | 深圳市灵星雨科技开发有限公司 | A kind of brightness regulation Modification of Curves |
| CN107945733A (en) * | 2017-11-22 | 2018-04-20 | 广东欧珀移动通信有限公司 | Brightness of display screen method of adjustment, device, storage medium and electronic equipment |
| CN108877710A (en) * | 2018-07-03 | 2018-11-23 | 京东方科技集团股份有限公司 | Grid on-state voltage provides unit, method, display driving mould group and display device |
| CN109147682A (en) * | 2018-11-28 | 2019-01-04 | 南京中电熊猫平板显示科技有限公司 | A kind of method and system of the brightness linear compensation of LED backlight driving |
| CN109326265A (en) * | 2016-08-18 | 2019-02-12 | 联发科技股份有限公司 | A kind of method and brightness control system of the brightness of adjusting panel |
| CN109473067A (en) * | 2018-12-13 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of back light brightness regulating method, device and display equipment |
-
2019
- 2019-05-31 CN CN201910471883.7A patent/CN110111735B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015088412A (en) * | 2013-11-01 | 2015-05-07 | 有限会社大平技研 | Led drive circuit |
| US20170132988A1 (en) * | 2015-11-06 | 2017-05-11 | Le Holdings (Beijing) Co., Ltd. | Control method and device for changing brightness |
| CN109326265A (en) * | 2016-08-18 | 2019-02-12 | 联发科技股份有限公司 | A kind of method and brightness control system of the brightness of adjusting panel |
| CN106297657A (en) * | 2016-09-27 | 2017-01-04 | 广东欧珀移动通信有限公司 | The brightness adjusting method of a kind of AMOLED display screen and terminal |
| CN107358909A (en) * | 2017-07-01 | 2017-11-17 | 深圳市灵星雨科技开发有限公司 | A kind of brightness regulation Modification of Curves |
| CN107945733A (en) * | 2017-11-22 | 2018-04-20 | 广东欧珀移动通信有限公司 | Brightness of display screen method of adjustment, device, storage medium and electronic equipment |
| CN108877710A (en) * | 2018-07-03 | 2018-11-23 | 京东方科技集团股份有限公司 | Grid on-state voltage provides unit, method, display driving mould group and display device |
| CN109147682A (en) * | 2018-11-28 | 2019-01-04 | 南京中电熊猫平板显示科技有限公司 | A kind of method and system of the brightness linear compensation of LED backlight driving |
| CN109473067A (en) * | 2018-12-13 | 2019-03-15 | 青岛海信电器股份有限公司 | A kind of back light brightness regulating method, device and display equipment |
Non-Patent Citations (2)
| Title |
|---|
| 严利民 等: "一种新型的OLED像素补偿驱动电路", 《液晶与显示》 * |
| 贺轶: "OLED亮度补偿电路浅析", 《工业技术创新》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020249066A1 (en) * | 2019-06-14 | 2020-12-17 | 华为技术有限公司 | Voltage regulation method and electronic device |
| US11854494B2 (en) | 2019-06-14 | 2023-12-26 | Huawei Technologies Co., Ltd. | Voltage adjustment method and electronic device |
| CN111798813A (en) * | 2020-07-20 | 2020-10-20 | 昆山国显光电有限公司 | Brightness adjusting method and device of display device and display device |
| CN111724735A (en) * | 2020-07-22 | 2020-09-29 | 京东方科技集团股份有限公司 | Driving voltage adjusting method and display device |
| CN111724735B (en) * | 2020-07-22 | 2021-12-28 | 京东方科技集团股份有限公司 | Driving voltage adjusting method and display device |
| CN113450693A (en) * | 2021-07-02 | 2021-09-28 | 昆山国显光电有限公司 | Driving device and driving method of display panel and display device |
| CN113450693B (en) * | 2021-07-02 | 2022-07-19 | 昆山国显光电有限公司 | Driving device and driving method of display panel and display device |
| CN114387920A (en) * | 2022-02-16 | 2022-04-22 | 武汉华星光电半导体显示技术有限公司 | OLED display device and brightness driving method thereof |
| US11798494B2 (en) | 2022-02-16 | 2023-10-24 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | OLED display device and brightness driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110111735B (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110111735A (en) | Driving method, driving chip and the display device of OLED display panel | |
| US10665181B2 (en) | Backlights with dynamic dimming ranges | |
| JP5347100B2 (en) | Image display device capable of adjusting brightness and image display method | |
| KR102662813B1 (en) | Host Content Adaptive Backlight Control (CABC) and Local Dimming | |
| CN102682715B (en) | Gray scale voltage generating circuit and method, source driver IC and liquid crystal display (LCD) device | |
| CN101329839B (en) | Display drive circuit | |
| CN111210778A (en) | Method and device for modulating backlight source driving signal | |
| CN106297699B (en) | The picture adjusting method and device of liquid crystal display panel | |
| CN106328090B (en) | Driving method and driving system of liquid crystal display | |
| CN102456324B (en) | Driving device and driving method of backlight module | |
| CN104751807A (en) | Method and device for regulating backlight brightness and liquid crystal display device | |
| CN107770506B (en) | Location regulation method, device and the terminal device of laser emitter | |
| CN102272820A (en) | Liquid crystal display apparatus and method for driving same | |
| WO2017101273A1 (en) | Lattice backlight source driving method, device and system | |
| CN109493813A (en) | A kind of display control method, relevant apparatus and computer-readable medium | |
| CN205959595U (en) | Electronic equipment and controller | |
| KR20160068443A (en) | Organic light emitting display device and method for controling the same | |
| WO2019000157A1 (en) | Method for controlling backlight power of liquid crystal display and liquid crystal display | |
| CN103514853B (en) | A kind of backlight smoothing method and device being applied to liquid crystal display dynamic light adjustment | |
| CN112309321B (en) | Display control method and device and storage medium | |
| CN110853578B (en) | Voltage compensation method and device | |
| CN102682723B (en) | The drive unit of display and driving method | |
| TWI225235B (en) | Method for dynamically controlling driving current of backlight module | |
| CN105185322A (en) | Control method and control device for screen backlight source, and display device | |
| CN110534063A (en) | The backlight method of adjustment and display device of local dimming |
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 |