CN109509462B - Brightness adjusting method and device under panel energy-saving mode - Google Patents
Brightness adjusting method and device under panel energy-saving mode Download PDFInfo
- Publication number
- CN109509462B CN109509462B CN201910055056.XA CN201910055056A CN109509462B CN 109509462 B CN109509462 B CN 109509462B CN 201910055056 A CN201910055056 A CN 201910055056A CN 109509462 B CN109509462 B CN 109509462B
- Authority
- CN
- China
- Prior art keywords
- brightness
- adjusting
- panel
- gamma circuit
- adjustment
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
-
- 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
-
- 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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a brightness adjusting method and device under a panel energy-saving mode. The brightness adjusting method in the panel energy-saving mode comprises the following steps: step 10, an energy-saving algorithm module calculates adjustment parameters required by output brightness adjustment; and 20, adjusting each binding point voltage of the gamma circuit according to the adjusting parameters, and adjusting the brightness of the panel through the adjusted binding point voltage. The invention also provides a corresponding brightness adjusting device under the panel energy-saving mode. The brightness adjusting method and the brightness adjusting device in the panel energy-saving mode can change the display brightness of the panel in the panel energy-saving mode by adopting a mode of adjusting the gamma voltage, and can ensure that the image data is not lost and is displayed as an original image effect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a brightness adjusting method and device under a panel energy-saving mode.
Background
The continuous development and progress of display technologies such as Liquid Crystal Display (LCD) panels, active matrix type organic light emitting diode (AMOLED) panels, etc. bring increasingly abundant display products, and the AMOLED panels are drawing attention as emerging technologies; people pay more and more attention to the environmental protection problem and put forward more rigorous energy consumption requirements on the AMOLED panel; in order to reduce energy consumption, an economic energy saving (ECO) mode is used as a necessary function of the AMOLED panel in the industry, and the ECO mode can not only save energy consumption, but also relieve the aging problem of the AMOLED panel and prolong the service life of the display.
Fig. 1 is a schematic diagram illustrating a method for adjusting panel brightness when a conventional panel enters an energy-saving mode. The panel is preset with an energy-saving algorithm module to realize the energy-saving mode of the panel, and the working process of the energy-saving algorithm module mainly comprises the following steps: stage one, circularly calculating an average pixel brightness (APL) value under a current frame (frame), comparing the average pixel brightness value of the previous frame, and if the average pixel brightness value is not changed within the ECO _ time1 time, determining that the panel playing content is in a static state at the moment and no dynamic video playing is performed; when the average pixel brightness value is not changed within the ECO _ time1 time, the method enters a second stage, brightness adjustment is started at a certain brightness reduction speed, during the second stage, if the average pixel brightness value is changed, the method returns to the first stage, if the average pixel brightness value is not changed within the ECO _ time2 time, the method enters a third stage, if the average pixel brightness value is not changed within the ECO _ time3 time, the method enters a fourth stage, and at this time, the average pixel brightness value is not changed, and the existing brightness is maintained unchanged.
In fig. 1, ECO _ time1, ECO _ time2, ECO _ time3 are time points preset by the energy saving algorithm module, and the corresponding luminance decreases from Lum to Lum _ target1 and then to Lum _ target. The Count _ time represents the current time, i.e., the time since entering the power saving algorithm, to the present time.
The ECO _ RATIO1 and ECO _ RATIO2 are preset values of the energy-saving algorithm module, and represent the RATIO of the brightness of the previous time period to the brightness of the next time period after the energy-saving algorithm is started.
The energy saving algorithm module may calculate slopes of the energy saving curve in different phases, such as a phase two energy saving curve slope K1 and a phase three energy saving curve slope K2:
K1＝(LUM－LUM*ECO_RATIO1)/(ECO_time2－ECO_time1)；
K2＝(Lum_target1－Lum_target1*ECO_RATIO2)/(ECO_time3－ECO_time2)。
the energy-saving algorithm module may calculate the luminance Lum _ count at the current time count _ time according to the current time count _ time, for example:
If(0<count_time<ECO_time1)
Lum_count＝LUM；
If(ECO_time1<＝count_time<ECO_time2)
Lum_count＝K1*(count_time－ECO_time1)+LUM；
If(ECO_time2<＝count_time<ECO_time3)
Lum_count＝K2*(count_time－ECO_time2)+LUM_target1；
If(ECO_time3<＝count_time)
Lum_count＝Lum_target。
when the current time count _ time is in stage two/stage three, the luminance Lum _ count is associated with an adjustment coefficient K1/K2 for adjusting the luminance.
Based on the display principle of the panel driving system, one way to control the display brightness of the panel is to adjust the size of the input data (brightness information) so as to adjust the brightness.
As shown in fig. 2, it is a schematic diagram of a brightness adjusting device in an energy-saving mode of an existing panel, and mainly includes an energy-saving algorithm module and a Gamma circuit (Gamma IC), which displays a change process of brightness through the energy-saving algorithm module before and after the brightness, and after brightness information of an image enters the energy-saving algorithm module for processing, the adjusted brightness information is output, and after adjustment through the Gamma circuit, the Gamma circuit generates a data signal voltage to drive the panel to display an image.
The brightness adjusting method under the existing panel energy-saving mode has the following problems: as shown in the table one below, according to the energy saving algorithm, after the energy saving algorithm module adjusts the luminance input data by using the coefficient K1/K2, the gray area data is 1, and when the coefficient K1/K2 is equal to 0.1, the luminance output data after the luminance input data is 5-14 converted is all 1, that is, a large part of gray scales cannot be displayed, so that the gray scale data is lost, and the image distortion is serious. When the value of the coefficient K1/K2 increases, the lost gray level value is improved, and in view of the effect of energy-saving picture display, the panel manufacturer usually sets the coefficient K1/K2 to be above 0.5, but still some data is lost, so that the picture is displayed as the non-original picture effect.
TABLE I Brightness input data and Brightness output data adjusted with an adjustment factor K1/K2
When the brightness adjustment method in the existing panel energy-saving mode is used, when the brightness of the panel is adjusted after the panel enters the energy-saving mode, the image data is adjusted in a certain proportion, and a part of the data is lost, so that the image is displayed as a non-original image effect, and therefore improvement is needed.
Disclosure of Invention
Therefore, an object of the present invention is to provide a method and an apparatus for adjusting brightness in a panel power saving mode, which change the display brightness of the panel by adjusting the gamma voltage.
In order to achieve the above object, the present invention provides a brightness adjustment method in a panel energy saving mode, comprising:
step 10, an energy-saving algorithm module calculates adjustment parameters required by output brightness adjustment;
and 20, adjusting each binding point voltage of the gamma circuit according to the adjusting parameters, and adjusting the brightness of the panel through the adjusted binding point voltage.
And the adjusting parameter is the ratio of the average pixel brightness after adjustment to the average pixel brightness before adjustment.
Wherein the step 20 comprises:
step 21, inputting the adjusting parameters into a reference voltage adjusting module, and generating adjusted reference voltages by the reference voltages of the gamma circuit according to the adjusting parameters;
and step 22, inputting the regulated reference voltage into the gamma circuit so as to regulate each binding point voltage of the gamma circuit, and regulating the brightness of the panel through the regulated binding point voltage.
Wherein, the adjusting parameter is denoted as K ', the reference voltage of the gamma circuit is denoted as Vref, and the adjusted reference voltage is denoted as Vref ', then Vref ═ K ' × Vref.
Wherein the step 20 comprises:
step 201, inputting the adjusting parameters into a binding point voltage adjusting module, and generating adjusted binding point voltages according to the adjusting parameters;
step 202, the gamma circuit adjusts the brightness of the panel through the adjusted tie voltage.
Wherein, the adjusting parameter is represented as K ', the reference voltage of the gamma circuit is represented as Vref, the parameter corresponding to each binding point gray scale is represented as G, and the adjusted binding point voltage is represented as Vgamma', so that Vgamma ═ K ″ (G/gamma circuit resolution) × Vref.
The reference voltage of the gamma circuit of the panel is 16 volts, the resolution of the gamma circuit is 1024, and the adjusting parameter is greater than or equal to 0.4.
The invention also provides a brightness adjusting device under the panel energy-saving mode, which comprises:
the energy-saving algorithm module is used for calculating adjustment parameters required by output brightness adjustment;
the reference voltage adjusting module is used for enabling the reference voltage of the gamma circuit to generate an adjusted reference voltage according to the adjusting parameter;
and the gamma circuit is used for receiving the regulated reference voltage to regulate each binding point voltage of the gamma circuit and regulating the brightness of the panel through the regulated binding point voltage.
The invention also provides a brightness adjusting device under the panel energy-saving mode, which comprises:
the energy-saving algorithm module is used for calculating adjustment parameters required by output brightness adjustment;
the binding point voltage adjusting module is used for generating each adjusted binding point voltage according to the adjusting parameters;
and the gamma circuit is used for adjusting the brightness of the panel through the adjusted binding voltage.
In summary, the brightness adjustment method and apparatus in the panel energy saving mode of the present invention can change the display brightness of the panel by adjusting the gamma voltage in the panel energy saving mode, and simultaneously can ensure that the image data is not lost and the image is displayed as the original image effect.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic diagram of a method for adjusting panel brightness when a conventional panel enters an energy saving mode;
FIG. 2 is a schematic diagram of a brightness adjustment apparatus in a conventional panel energy saving mode;
FIG. 3 is a block diagram of a preferred embodiment of a brightness adjustment apparatus in a panel power saving mode according to the present invention;
FIG. 4 is a diagram of the binding inside the gamma circuit;
FIG. 5 is a block diagram of a brightness adjustment apparatus in a panel power saving mode according to another preferred embodiment of the present invention.
Detailed Description
Based on the display principle of the panel driving system, the display brightness of the panel is changed by adjusting the gamma voltage, and the voltage corresponding to the data is changed by changing the gamma voltage, so that the display brightness of the panel is adjusted. The brightness adjusting method under the panel energy-saving mode mainly comprises the following steps:
step 10, an energy-saving algorithm module calculates adjustment parameters required by output brightness adjustment;
and 20, adjusting each binding point voltage of the gamma circuit according to the adjusting parameters, and adjusting the brightness of the panel through the adjusted binding point voltage.
The adjustment parameter may be a ratio of the average pixel brightness after adjustment to the average pixel brightness before adjustment, and represents a multiple of brightness reduction in the energy saving mode.
Alternatively, step 20 may comprise:
step 21, inputting the adjusting parameters into a reference voltage adjusting module, and generating adjusted reference voltages by the reference voltages of the gamma circuit according to the adjusting parameters;
step 22, inputting the regulated reference voltage into the gamma circuit so as to regulate each binding point voltage of the gamma circuit, and regulating the brightness of the panel through the regulated binding point voltage;
in the present invention, the adjustment parameter is denoted as K ', the reference voltage of the gamma circuit is denoted as Vref, and the adjusted reference voltage is denoted as Vref', and then Vref 'is denoted as K' Vref.
Alternatively, step 20 may comprise:
step 201, inputting the adjusting parameters into a binding point voltage adjusting module, and generating adjusted binding point voltages according to the adjusting parameters;
step 202, the gamma circuit adjusts the brightness of the panel through the adjusted binding voltage;
in the present invention, the adjustment parameter is represented as K ', the reference voltage of the gamma circuit is represented as Vref, the parameter corresponding to each binding gray scale is represented as G, and the adjusted binding voltage is represented as Vgamma', so that Vgamma ═ K ″ (G/gamma circuit resolution) × Vref.
Based on the brightness adjusting method in the panel energy-saving mode, the invention correspondingly provides a brightness adjusting device in the panel energy-saving mode, and the invention can be understood by combining. Referring to fig. 3, it is a block diagram of a preferred embodiment of the brightness adjusting apparatus in the panel energy saving mode according to the present invention, which can be understood by combining steps 21 and 22. The brightness adjusting device under the panel energy-saving mode mainly comprises:
the energy-saving algorithm module is used for calculating an adjusting parameter K' required by the adjustment of the output brightness;
the reference voltage adjusting module is used for enabling the reference voltage Vref of the gamma circuit to generate an adjusted reference voltage Vref 'according to an adjusting parameter K';
and a gamma circuit for receiving the adjusted reference voltage Vref' to adjust respective tie-point voltages of the gamma circuit, and adjusting the brightness of the panel by the adjusted tie-point voltages.
As shown in fig. 4, a general gamma circuit may have a plurality of binding points GAMA 1-GAMA 9, Vref is a reference voltage required for the gamma circuit to generate gamma voltages, and GND is a ground terminal. The gamma circuit is formed by connecting a plurality of voltage division resistors R in series, and the more the resistors are, the higher the voltage division precision is.
In the preferred embodiment, the adjusting parameter K 'required for adjusting the output brightness in the panel energy-saving mode is calculated by the energy-saving algorithm module, and is input to the reference voltage Vref adjusting module, the Vref adjusting amplitude is calculated according to the adjusting parameter K', the adjusted reference voltage Vref 'is generated, and then the Vref' is input to the gamma circuit to change the voltage of the binding point in the gamma circuit, finally, the data voltage corresponding to the 0-255 gray scale is changed, and the brightness displayed by the panel is changed accordingly.
The following table two illustrates the corresponding relationship between the gray levels of 0-255 and the binding points GAMA 1-GAMA 9 of the gamma circuit, wherein the resolution of the gamma circuit is 1024, and each binding point gray level corresponds to different parameters G.
Watch two
Referring to fig. 5, it is a block diagram of a brightness adjustment apparatus in a panel energy saving mode according to another preferred embodiment of the present invention, which can be understood in combination with steps 201 and 202. The brightness adjusting device under the panel energy-saving mode mainly comprises:
the energy-saving algorithm module is used for calculating an adjusting parameter K' required by the adjustment of the output brightness;
the binding point voltage adjusting module is used for generating each adjusted binding point voltage Vgamma 'according to the adjusting parameter K'; may be denoted as Vgamma '═ K' (G/gamma circuit resolution) × Vref, the gamma circuit resolution in fig. 5 is specifically 1024;
and the gamma circuit is used for adjusting the brightness of the panel through the adjusted binding voltage Vgamma'.
In this embodiment, the adjustment parameter K 'required for output is calculated by the energy-saving algorithm module, the voltage of each tie point of the gamma circuit is adjusted according to the adjustment parameter K', the tie point voltage Vgamma 'of the gamma circuit is set, and the panel brightness is adjusted by using the tie point voltage Vgamma'.
Referring to the following table three, where the resolution of the gamma circuit is 1024, and each gray scale corresponds to different parameters G, the table three shows that, by implementing the present invention, when the adjustment parameter K' is greater than or equal to 0.4, the adjustment parameter of the gamma circuit corresponding to each gray scale is not repeated, which also means that there is no loss of gray scale after adjusting the brightness. The brightness adjusting method and the brightness adjusting device in the panel energy-saving mode can change the display brightness of the panel in the panel energy-saving mode by adopting a gamma voltage adjusting mode, and can ensure that the image data is not lost and is displayed as an original image effect.
Watch III
The following tables four, five, and six are used to illustrate the difference between the gamma target voltage and the actual debugging voltage when the values of the adjusting parameter k' are different.
When k' is 0.4, the brightness is reduced by 0.4 times, and the difference between the gamma target voltage and the actual debugging voltage is shown
When k' is 0.5, the brightness is reduced by 0.5 times, and the difference value between the gamma target voltage and the actual debugging voltage is
When k' is 0.6, the brightness is reduced by 0.6 times, and the difference value between the gamma target voltage and the actual debugging voltage is
In tables four, five and six, when the brightness input data is reduced by the adjustment parameter K', the gamma data is rounded, the error range between the actually debugged voltage of the gamma circuit and the target voltage is 0.01V, and the voltage difference between adjacent gray scales is greater than or equal to 16V (gamma circuit reference voltage)/1024 (gamma circuit resolution) which is 0.015V.
In summary, the brightness adjustment method and apparatus in the panel energy saving mode of the present invention can change the display brightness of the panel by adjusting the gamma voltage in the panel energy saving mode, and simultaneously can ensure that the image data is not lost and the image is displayed as the original image effect.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (9)
1. A method for adjusting brightness in a panel energy-saving mode is characterized by comprising the following steps:
step 10, an energy-saving algorithm module calculates adjustment parameters required by output brightness adjustment;
step 20, adjusting each binding point voltage of the gamma circuit according to the adjusting parameters, and adjusting the brightness of the panel through the adjusted binding point voltage;
the step 20 comprises:
step 21, inputting the adjusting parameters into a reference voltage adjusting module, and generating adjusted reference voltages by the reference voltages of the gamma circuit according to the adjusting parameters;
and step 22, inputting the regulated reference voltage into the gamma circuit so as to regulate each binding point voltage of the gamma circuit, and regulating the brightness of the panel through the regulated binding point voltage.
2. The method as claimed in claim 1, wherein the adjustment parameter is a ratio of the average pixel brightness after adjustment to the average pixel brightness before adjustment.
3. The method according to claim 1, wherein the adjustment parameter is denoted as K ', the reference voltage of the gamma circuit is denoted as Vref, and the adjusted reference voltage is denoted as Vref', and then Vref 'is denoted as K' Vref.
4. The method of claim 2, wherein the reference voltage of the gamma circuit of the panel is 16V, the resolution of the gamma circuit is 1024, and the adjustment parameter is greater than or equal to 0.4.
5. A method for adjusting brightness in a panel energy-saving mode is characterized by comprising the following steps:
step 10, an energy-saving algorithm module calculates adjustment parameters required by output brightness adjustment;
step 20, adjusting each binding point voltage of the gamma circuit according to the adjusting parameters, and adjusting the brightness of the panel through the adjusted binding point voltage;
the step 20 comprises:
step 201, inputting the adjusting parameters into a binding point voltage adjusting module, and generating adjusted binding point voltages according to the adjusting parameters;
step 202, the gamma circuit adjusts the brightness of the panel through the adjusted binding voltage;
the adjustment parameter is denoted by K ', the reference voltage of the gamma circuit is denoted by Vref, the parameter corresponding to each binding point gray scale is denoted by G, and the adjusted binding point voltage is denoted by Vgamma', so that Vgamma ═ K ″ (G/gamma circuit resolution) × Vref.
6. The method as claimed in claim 5, wherein the adjustment parameter is a ratio of the average pixel brightness after adjustment to the average pixel brightness before adjustment.
7. The method of claim 6, wherein the reference voltage of the gamma circuit of the panel is 16V, the resolution of the gamma circuit is 1024, and the adjustment parameter is greater than or equal to 0.4.
8. A brightness adjustment device in a panel energy saving mode, comprising:
the energy-saving algorithm module is used for calculating adjustment parameters required by output brightness adjustment;
the reference voltage adjusting module is used for enabling the reference voltage of the gamma circuit to generate an adjusted reference voltage according to the adjusting parameter;
and the gamma circuit is used for receiving the regulated reference voltage to regulate each binding point voltage of the gamma circuit and regulating the brightness of the panel through the regulated binding point voltage.
9. A brightness adjustment device in a panel energy saving mode, comprising:
the energy-saving algorithm module is used for calculating adjustment parameters required by output brightness adjustment;
the binding point voltage adjusting module is used for generating each adjusted binding point voltage according to the adjusting parameters;
a gamma circuit for adjusting the brightness of the panel by the adjusted tie voltage;
the adjustment parameter is denoted by K ', the reference voltage of the gamma circuit is denoted by Vref, the parameter corresponding to each binding point gray scale is denoted by G, and the adjusted binding point voltage is denoted by Vgamma', so that Vgamma ═ K ″ (G/gamma circuit resolution) × Vref.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055056.XA CN109509462B (en) | 2019-01-21 | 2019-01-21 | Brightness adjusting method and device under panel energy-saving mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055056.XA CN109509462B (en) | 2019-01-21 | 2019-01-21 | Brightness adjusting method and device under panel energy-saving mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109509462A CN109509462A (en) | 2019-03-22 |
| CN109509462B true CN109509462B (en) | 2020-06-30 |
Family
ID=65758284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910055056.XA Active CN109509462B (en) | 2019-01-21 | 2019-01-21 | Brightness adjusting method and device under panel energy-saving mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509462B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754150A (en) * | 1995-02-17 | 1998-05-19 | Sharp Kabushiki Kaisha | Liquid crystal luminance adjusting apparatus |
| CN103680438A (en) * | 2013-11-22 | 2014-03-26 | 武汉精立电子技术有限公司 | Synchronous correction method for gamma curve and flicker of LCD |
| WO2017024728A1 (en) * | 2015-08-13 | 2017-02-16 | 小米科技有限责任公司 | Method and device for reducing display brightness |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090213055A1 (en) * | 2008-02-25 | 2009-08-27 | Himax Display, Inc. | Display device capable of brightness adjustment by adjusting gamma curve and method thereof |
| CN101777308B (en) * | 2009-01-09 | 2012-03-21 | 联咏科技股份有限公司 | Driving method capable of improving image brightness and reducing image distortion and display device |
| CN102355561B (en) * | 2011-09-20 | 2013-05-22 | 青岛海信电器股份有限公司 | Method and device for improving image contrast, LCD TV (liquid crystal display television) set |
| CN103000157B (en) * | 2012-12-25 | 2015-04-15 | 深圳市华星光电技术有限公司 | Programmable gamma circuit of drive system of liquid crystal display |
| CN105702215B (en) * | 2016-04-26 | 2018-05-25 | 京东方科技集团股份有限公司 | Gamma electric voltage bearing calibration and device |
| CN106057861B (en) * | 2016-08-08 | 2019-03-12 | 深圳市华星光电技术有限公司 | OLED display and the method for reducing OLED display power consumption |
| CN106875916B (en) * | 2017-04-27 | 2019-03-26 | 武汉华星光电技术有限公司 | The method for burn-recording and burning/recording liquid crystal display panel device of liquid crystal display panel |
| CN107665689B (en) * | 2017-10-27 | 2020-06-05 | 深圳市华星光电技术有限公司 | Gamma chip, time sequence control chip and liquid crystal display device |
| CN108831381A (en) * | 2018-06-25 | 2018-11-16 | 深圳市华星光电半导体显示技术有限公司 | Show data alignment system and display data adjustment method |
| CN108597447A (en) * | 2018-07-09 | 2018-09-28 | 武汉华星光电半导体显示技术有限公司 | A kind of adjustment method and device of display panel gray scale voltage |
-
2019
- 2019-01-21 CN CN201910055056.XA patent/CN109509462B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754150A (en) * | 1995-02-17 | 1998-05-19 | Sharp Kabushiki Kaisha | Liquid crystal luminance adjusting apparatus |
| CN103680438A (en) * | 2013-11-22 | 2014-03-26 | 武汉精立电子技术有限公司 | Synchronous correction method for gamma curve and flicker of LCD |
| WO2017024728A1 (en) * | 2015-08-13 | 2017-02-16 | 小米科技有限责任公司 | Method and device for reducing display brightness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109509462A (en) | 2019-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109064979B (en) | Image display processing method and device, display device and storage medium | |
| TWI385615B (en) | Gamma correction device, display apparatus including the same, and method of gamma correction therein | |
| KR101914936B1 (en) | Method and circuit for compensating gamma reference voltages | |
| US8212764B2 (en) | Liquid crystal display and driving method thereof | |
| KR102269893B1 (en) | Display device and method for driving display device | |
| EP3567578A1 (en) | Display device and driving method thereof | |
| US20050062703A1 (en) | Modifying gray voltage signals in a display device | |
| CN105118474A (en) | LCD brightness control method and device as well as LCD equipment | |
| US20090109246A1 (en) | Display apparatus and control method thereof for saving power | |
| US9530346B2 (en) | Organic light-emitting diode display and method of driving the same | |
| CN106205485A (en) | Image processing method, image processing circuit and use its organic LED display device | |
| EP2194524B1 (en) | Display device and brightness controlling method therefor | |
| US20200118499A1 (en) | Display driving method, display driving device, data driving circuit and display device | |
| KR20210127275A (en) | Driving controller, display apparatus including the same and method of driving display panel using the same | |
| CN101101425B (en) | Displaying device and drive method thereof | |
| US8125496B2 (en) | Apparatus and method of converting image signal for four-color display device | |
| US20240029674A1 (en) | Display device and driving method thereof | |
| CN113948033B (en) | High-precision PWM driving method, device and medium for LED display screen | |
| CN113903305A (en) | Display control method, device, chip, equipment, storage medium and program product | |
| CN109509462B (en) | Brightness adjusting method and device under panel energy-saving mode | |
| CN111048049B (en) | Display device | |
| CN111009221A (en) | Display device | |
| US11501726B2 (en) | Liquid crystal display device | |
| CN111028763B (en) | Gamma reference voltage adjusting method, adjusting circuit and display panel | |
| CN115686406A (en) | Screen saver controller, display device, and method of driving display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |