CN115206236A - Gamma debugging method, gamma debugging device and display device - Google Patents
Gamma debugging method, gamma debugging device and display device Download PDFInfo
- Publication number
- CN115206236A CN115206236A CN202210915312.XA CN202210915312A CN115206236A CN 115206236 A CN115206236 A CN 115206236A CN 202210915312 A CN202210915312 A CN 202210915312A CN 115206236 A CN115206236 A CN 115206236A
- Authority
- CN
- China
- Prior art keywords
- gamma
- gray scale
- value
- gamma curve
- curve formula
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- 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)
- Picture Signal Circuits (AREA)
Abstract
The disclosure provides a gamma debugging method, a gamma debugging device and a display device, which belong to the technical field of display and can solve the problem that the brightness value corresponding to a low gray scale in the existing display panel is lower and the display uniformity is influenced. The gamma debugging method of the present disclosure includes: dividing the whole gray scale range into a first gray scale interval and a second gray scale interval; wherein, the gray scale value in the first gray scale interval is smaller than the gray scale value in the second gray scale interval; acquiring brightness values corresponding to all gray scale values in a first gray scale interval by using a first gamma curve formula; wherein the gamma value of the first gamma curve formula is smaller than the gamma value of the second gamma curve formula; acquiring brightness values corresponding to all gray scale values in a second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to the standard gamma value.
Description
Technical Field
The disclosure belongs to the technical field of display, and particularly relates to a gamma debugging method, a gamma debugging device and a display device.
Background
An Organic Light-Emitting Diode (OLED) is a Light-Emitting device using an Organic solid semiconductor as a Light-Emitting material, and has a wide application prospect because of its advantages of simple preparation process, low cost, low power consumption, high luminance, wide working temperature application range, and the like.
Disclosure of Invention
The present disclosure is directed to at least one of the technical problems in the prior art, and provides a gamma debugging method, a gamma debugging apparatus and a display apparatus.
In a first aspect, an embodiment of the present disclosure provides a gamma debugging method, where the gamma debugging method includes:
dividing the whole gray scale range into a first gray scale interval and a second gray scale interval; the gray scale value in the first gray scale interval is smaller than the gray scale value in the second gray scale interval;
acquiring brightness values corresponding to all gray scale values in the first gray scale interval by using a first gamma curve formula; wherein a gamma value of the first gamma curve formula is less than a gamma value of the second gamma curve formula;
acquiring brightness values corresponding to all the gray scale values in the second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to a standard gamma value.
Optionally, the obtaining, by using a first gamma curve formula, a brightness value corresponding to each gray-scale value in the first gray-scale interval further includes:
selecting a switching point of the first gray scale interval and the second gray scale interval, and calculating a brightness value corresponding to the switching point by using a second gamma curve formula;
calculating the maximum brightness by using a formula with a third gamma curve according to the gray-scale value and the brightness value of the switching point; the gamma value of the third gamma curve formula is less than the standard gamma value;
and acquiring the first gamma curve formula according to the maximum brightness and the third gamma curve formula.
Optionally, the gamma value of the first gamma curve formula is 1.5 to 2.2.
Optionally, the gray scale value of the switching point is located in the middle region of the entire gray scale range.
Optionally, a gray scale value of the first gray scale interval is 1 to 142; the gray scale value of the second gray scale interval is 143 to 255.
In a second aspect, an embodiment of the present disclosure provides a gamma debugging apparatus, including:
a gray scale division module configured to divide an entire gray scale range into a first gray scale section and a second gray scale section; the gray scale value in the first gray scale interval is smaller than the gray scale value in the second gray scale interval;
the first gamma debugging module is configured to acquire a brightness value corresponding to each gray scale value in the first gray scale interval by using a first gamma curve formula; wherein a gamma value of the first gamma curve formula is less than a gamma value of the second gamma curve formula;
the second gamma debugging module is configured to acquire a brightness value corresponding to each gray scale value in the second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to a standard gamma value.
Optionally, the gamma debugging apparatus further includes:
the first brightness acquisition module is configured to select a switching point of the first gray scale interval and the second gray scale interval and calculate a brightness value corresponding to the switching point by using a second gamma curve formula;
the second brightness acquisition module is configured to calculate the maximum brightness according to the gray-scale value and the brightness value of the switching point by using a formula with a third gamma curve; the gamma value of the third gamma curve formula is less than the standard gamma value;
a gamma curve fitting module configured to obtain the first gamma curve formula according to the maximum brightness and the third gamma curve formula.
In a third aspect, the present disclosure provides a display device including the gamma debugging device provided as above.
In a fourth aspect, an embodiment of the present disclosure provides an electronic device, including:
one or more processors;
a storage device having one or more programs stored thereon that, when executed by the one or more processors, cause the one or more processors to implement the gamma debugging method provided above;
one or more I/O interfaces connected between the processor and the memory and configured to enable information interaction between the processor and the memory.
In a fifth aspect, embodiments of the present disclosure provide a computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements the gamma debugging method provided above.
Drawings
Fig. 1 is a schematic flowchart of a gamma debugging method according to an embodiment of the disclosure.
Fig. 2 is a schematic diagram of a gamma curve according to an embodiment of the disclosure.
Fig. 3 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the disclosure.
Fig. 4 is a schematic structural diagram of an electronic device provided in some embodiments of the present disclosure.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The sensitivity of the human eye to the brightness in a darker environment is much higher than the sensitivity of the human eye to the brightness in a brighter environment, and therefore the relationship between the human eye's perception and the brightness is not a linear relationship. For example, the brightness is increased by 2 times, but human eyes cannot sense the brightness is increased by 2 times, and the brightness can only sense the brightness is increased a little; when the brightness is increased by 8 times or more, the human eye may feel that the brightness is increased by 2 times compared with the original brightness. Therefore, in order to make the display effect of the display device conform to the visual perception of human eyes, gamma tuning (gamma tuning) needs to be performed on the display device. Specifically, the display device may be gamma-debugged before it leaves the factory, so as to determine the required driving voltage for each gray-scale value of the display device in each gamma band.
The display device is generally configured with a plurality of gamma bands (for example, a mobile phone), and is generally configured with 13 gamma bands, wherein the gamma bands include 1 High Brightness Mode (HBM), three normal brightness modes (AODs), and 9 normal modes (Nor). Wherein, 9 Nor can be named as Nor1, nor2, 8230, 8230and Nor9 in sequence. Details will be described below by taking Nor9 as an example.
In the high-end OLED display products in the market, customers have higher requirements on low-brightness low-gray-scale uniformity and low-gray-scale image quality yield. Because the current OLED display screen is adjusted according to a gamma curve (gamma 2.2) with a gamma value of 2.2, the luminance of the OLED display screen is low due to low luminance and low gray scale, and the yield is low when a customer tests uniformity. The commonly adopted method at present is to improve the light emitting raw material in the display panel and adjust the voltages of the high level voltage terminal VGH and the initialization signal terminal Vinit 1. However, the cost of raw materials is high, the daily range is long, and other problems such as the increase of residual images, the poor image quality, highlight and bright spots and the like are easily caused by voltage adjustment, which is not beneficial to improving the display effect of the display product.
In order to solve at least one of the above technical problems, embodiments of the present disclosure provide a gamma debugging method, a gamma debugging apparatus, and a display apparatus, and the gamma debugging method, the gamma debugging apparatus, and the display apparatus provided in embodiments of the present disclosure will be described in further detail with reference to the accompanying drawings and specific embodiments.
In a first aspect, an embodiment of the present disclosure provides a gamma debugging method, and fig. 1 is a schematic flow chart of the gamma debugging method provided by the embodiment of the present disclosure, as shown in fig. 1, the gamma debugging method includes the following steps S101 to S103.
S101, dividing the whole gray scale range into a first gray scale interval and a second gray scale interval; wherein, the gray scale value in the first gray scale interval is smaller than that in the second gray scale interval.
In the step S101, 256 gray scale values are provided in the whole gray scale range, specifically, the gray scale values may be 0 to 255, and the 256 gray scale values may be divided into two gray scale intervals, where the first gray scale interval is a low gray scale interval, and the second gray scale interval may be a high gray scale interval, so as to perform gamma debugging on the low gray scale interval and the high gray scale interval separately. The specific gray scale value in the first gray scale interval and the second gray scale interval can be set according to actual needs.
S102, acquiring brightness values corresponding to all gray scale values in a first gray scale interval by using a first gamma curve formula; wherein the gamma value of the first gamma curve formula is smaller than the gamma value of the second gamma curve formula.
In step S102, in practical applications, the smaller the gamma value is, the larger the brightness corresponding to the same gray-scale value is. The gamma curve (gamma 2.2) with the gamma value of 2.2 +/-0.5 is generally adopted for debugging, and the gamma value of 2.2 +/-0.5 is the standard gamma value. When the gamma debugging is carried out on the low gray scale interval, the first gamma curve formula is adopted for debugging, the gamma value set by the first gamma curve formula is smaller than the standard gamma value, the brightness corresponding to the low gray scale value can be improved, the display uniformity of the display panel in the low-brightness low gray scale interval and the yield of the display pictures in the low gray scale interval are improved, the uniformity and the time acceptance of the display panel in the client test are guaranteed, the productivity of the display panel is improved, and the production cost is reduced. In some implementations, the first gamma curve may be fitted from a plurality of gamma curves, the gamma values of which increase as the gray scale value increases, and the maximum value of which is close to or equal to the standard gamma value.
S103, acquiring brightness values corresponding to all gray scale values in a second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to the standard gamma value.
In step S103, when performing gamma debugging on the high gray scale interval, a gamma curve having a standard gamma value, i.e. a gamma value of 2.2 ± 0.5, may be used for performing gamma debugging. In the high-brightness high-gray-scale display picture, the standard gamma curve is adopted for debugging, the uniformity and the display effect of the display picture are not influenced, meanwhile, the debugging mode is not changed, and the production cost is saved.
According to the gamma debugging method provided by the embodiment of the disclosure, the whole gray scale range is divided into a high-low gray scale interval and a low gray scale interval, the gamma debugging is performed on the gray scale value of the low gray scale interval by using the first gamma curve formula with a smaller gamma value, the gamma debugging is performed on the gray scale value of the high gray scale interval by using the second gamma curve with a standard gamma value, the brightness corresponding to the low gray scale value can be improved, the display uniformity of the display panel in the low-brightness low gray scale interval and the yield of the display image in the low gray scale are improved, the acceptance uniformity and the time of the display panel in the client test are ensured, the productivity of the display panel is improved, and the production cost is reduced.
In some embodiments, the following steps S201 to S203 are further included before step S102.
S201, selecting a switching point of the first gray scale interval and the second gray scale interval, and calculating a brightness value corresponding to the switching point by using a second gamma curve formula.
In step S201, the switching point gray-scale value of the first gray-scale interval and the second gray-scale interval may be 143, but the gray-scale value of the switching point may also be adjusted according to actual conditions, for example, adjusted to 150 or 140. The gray level value 143 can be substituted into a second gamma curve formula, i.e. a standard gamma curve formula with a gamma value of 2.2, to calculate the brightness value corresponding to the gray level value of the switching point 143. Specifically, L143= Lmax1 (143/255) 2 . 2 The gamma curve is schematically shown in fig. 2, wherein point a is a switching point, and the gray level and the brightness value of point a are (143, L143). In some realizable modes, the gray-scale value of the switching point can also be 239 and the like, which are not listed here.
S202, calculating the maximum brightness by using a formula with a third gamma curve according to the gray value and the brightness value of the switching point; the gamma value of the third gamma curve formula is smaller than the standard gamma value.
In the above step S202, the gray level value and the brightness value of a may be substituted into a third gamma curve formula, and the gamma value of the third gamma curve formula is smaller than the standard gamma value, specifically, the gamma value of the third gamma curve formula may be selected to be 1.5, i.e., L143= Lmax2 (143/255) 1 . 5 . The maximum luminance value Lmax2, i.e. the gray level value of B point is 255, and the corresponding luminance value is Lmax2, and the gray level value and luminance value of B point are (255, lmax 2). Then, the maximum brightness corresponding to the fitted first gamma curve is the brightness of the point B.
S203, acquiring a first gamma curve formula according to the maximum brightness and the third gamma curve formula.
In step S203, the luminance at point B may be substituted into the third gamma curve formula, i.e., li = Lmax2 (gray/255) 1 . 5 The formula is a first gamma curve formula, and a gamma curve diagram thereof is shown in fig. 2. The first gamma curve pair can be utilizedThe gamma debugging is carried out on the gray scale value in the low gray scale interval, the brightness corresponding to the low gray scale value can be improved, the display uniformity of the display panel in the low-brightness low gray scale interval and the yield of the display pictures in the low gray scale interval are improved, the uniformity and the time acceptance of the display panel in the client test are guaranteed, the productivity of the display panel is improved, and the production cost is reduced.
In some embodiments, the gamma value of the first gamma curve formula is 1.5 to 2.2.
It is understood that the gamma of the first gamma curve can be set according to actual needs, for example, the gamma value of the first gamma curve formula in the embodiment of the present disclosure can be set to 1.5, and can also be set to other values in the range of 1.5 to 2.2, or the first gamma curve can be variable, and the gamma value thereof increases in the range of 1.5 to 2.2 as the gray scale value increases.
In some embodiments, the gray scale value of the switch point is located in the middle region of the entire gray scale range.
The middle region may include the middle value of the entire gray scale range, illustratively, 256 gray scales, with a middle gray scale value of 128. Wherein the maximum boundary grayscale value of the middle region has a specified difference from the middle grayscale value, and the minimum boundary grayscale value of the middle region has a specified difference from the middle grayscale value, e.g., 20 from the middle grayscale value 128. For example, when the entire gray scale range has 256 gray scales, the middle region may have a gray scale value of 108 to 148. In the embodiment of the present disclosure, the gray scale value of the switching point may be 143, the gray scale value of the first gray scale interval is 1 to 142, and the gray scale value of the second gray scale interval is 143 to 255.
As shown in fig. 2, the brightness value debugged by using the first gamma curve and the brightness value debugged by using the second gamma curve have a certain difference near the switching point, but the brightness value is higher at this time, and the human eye perception is insensitive at high brightness, so that the human eye cannot perceive the sudden reduction of the brightness value near the switching point, the perception abnormality of the human eye cannot be caused, and the color cast can be improved. Therefore, the gray scale value of the switching point is positioned in the middle area of the whole gray scale range, and the phenomenon that human eyes perceive abnormity due to sudden brightness change when the gray scale interval is transited can be avoided.
It should be noted that, in the gamma debugging method provided in the embodiment of the present disclosure, the entire gray scale range may be further divided into three gray scale intervals, for example, the gray scales of the switching point are 143 and 240, wherein the gray scale value of the first gray scale interval is 1 to 142, the gray scale value of the second gray scale interval is 143 to 239, and the gray scale value of the third gray scale interval is 240 to 255, wherein the gamma value adopted in the first gray scale interval is smaller than the gamma value adopted in the third gray scale interval, and the gamma value adopted in the second gray scale interval adopted in the third gray scale interval is. For example: the method comprises the steps of debugging by adopting a gamma curve formula with a gamma value of 1.5 +/-0.5 in a first gray scale interval, debugging by adopting a gamma curve formula with a gamma value of 2.2 +/-0.4 in a second gray scale interval, and debugging by adopting a gamma curve formula with a gamma value of 2.2 +/-0.3 in a third gray scale interval so as to obtain a smoother brightness curve.
In a second aspect, an embodiment of the present disclosure provides a gamma debugging apparatus, and fig. 3 is a schematic structural diagram of the gamma debugging apparatus provided in the embodiment of the present disclosure, as shown in fig. 3, the gamma debugging apparatus includes: a gray-scale division module 301, a first gamma debugging module 302 and a second gamma debugging module 303.
The gray scale division module 301 is configured to divide the entire gray scale range into a first gray scale section and a second gray scale section; wherein, the gray scale value in the first gray scale interval is smaller than that in the second gray scale interval.
The first gamma debugging module 302 is configured to obtain, by using a first gamma curve formula, a brightness value corresponding to each gray scale value in a first gray scale interval; wherein the gamma value of the first gamma curve formula is smaller than the gamma value of the second gamma curve formula.
The second gamma debugging module 303 is configured to obtain, by using a second gamma curve formula, a brightness value corresponding to each gray scale value in a second gray scale interval; wherein the gamma value of the second gamma curve formula is equal to the standard gamma value.
As shown in fig. 3, the gamma debugging apparatus further includes: a first brightness obtaining module 401, a second brightness obtaining module 402 and a gamma curve fitting module 403.
The first brightness obtaining module 401 is configured to select a switching point between the first gray scale interval and the second gray scale interval, and calculate a brightness value corresponding to the switching point by using a second gamma curve formula.
The second brightness obtaining module 402 is configured to calculate the maximum brightness according to the gray-scale value and the brightness value of the switching point by using a formula having a third gamma curve; the gamma value of the third gamma curve formula is smaller than the standard gamma value.
The gamma curve fitting module 403 is configured to obtain a first gamma curve formula according to the maximum brightness and the third gamma curve formula.
It should be noted that each module in the gamma debugging apparatus provided in the embodiments of the present disclosure may be configured to execute steps S101 to S103 and steps S201 to S203 in any of the gamma debugging methods provided in the embodiments described above. The implementation principle is similar to the above description and is not repeated herein.
Third aspect an embodiment of the present disclosure provides a display device, where the display device includes the gamma debugging device provided in any one of the above embodiments, and the display device may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a computer monitor, a notebook computer, a digital photo frame, and a navigator.
In a fourth aspect, an embodiment of the present disclosure provides an electronic device, and fig. 4 is a schematic structural diagram of the electronic device provided in some embodiments of the present disclosure, as shown in fig. 4, the electronic device includes: one or more processors 401; a memory 402, on which one or more programs are stored, which when executed by the one or more processors cause the one or more processors to implement the gamma debugging method provided by any of the above embodiments; one or more I/O interfaces 403 coupled between the processor and the memory and configured to enable information interaction between the processor and the memory.
Among them, the processor 401 is a device having data processing capability, which includes but is not limited to a Central Processing Unit (CPU), etc.; memory 402 is a device having data storage capabilities including, but not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), FLASH memory (FLASH); an I/O interface (read/write interface) 403 is connected between the processor 401 and the memory 402, and can realize information interaction between the processor 401 and the memory 402, which includes but is not limited to a data Bus (Bus) and the like.
In some embodiments, the processor 401, memory 402, and I/O interface 403 are interconnected by a bus, which in turn connects with other components of the computing device.
In a fifth aspect, the present embodiment provides a computer readable medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the gamma debugging method provided in any of the above embodiments.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as is well known to those skilled in the art.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (10)
1. A gamma debugging method, comprising:
dividing the whole gray scale range into a first gray scale interval and a second gray scale interval; the gray scale value in the first gray scale interval is smaller than the gray scale value in the second gray scale interval;
acquiring brightness values corresponding to all gray scale values in the first gray scale interval by using a first gamma curve formula; wherein a gamma value of the first gamma curve formula is less than a gamma value of the second gamma curve formula;
acquiring brightness values corresponding to all gray scale values in the second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to a standard gamma value.
2. The gamma debugging method of claim 1, wherein a first gamma curve formula is utilized to obtain the brightness values corresponding to the gray scale values in the first gray scale interval, and the method further comprises:
selecting a switching point of the first gray scale interval and the second gray scale interval, and calculating a brightness value corresponding to the switching point by using a second gamma curve formula;
calculating the maximum brightness by using a formula with a third gamma curve according to the gray-scale value and the brightness value of the switching point; the gamma value of the third gamma curve formula is less than the standard gamma value;
and acquiring the first gamma curve formula according to the maximum brightness and the third gamma curve formula.
3. The gamma debugging method of claim 1, wherein the gamma value of the first gamma curve formula is 1.5 to 2.2.
4. The gamma debugging method of claim 2, wherein the gray scale values of the switching points are located in the middle region of the entire gray scale range.
5. The gamma debugging method of claim 4, wherein the first gray scale interval has gray scale values of 1 to 142; the gray scale value of the second gray scale interval is 143 to 255.
6. A gamma debugging device, comprising:
a gray scale division module configured to divide an entire gray scale range into a first gray scale section and a second gray scale section; the gray scale value in the first gray scale interval is smaller than the gray scale value in the second gray scale interval;
the first gamma debugging module is configured to acquire a brightness value corresponding to each gray scale value in the first gray scale interval by using a first gamma curve formula; wherein a gamma value of the first gamma curve formula is less than a gamma value of the second gamma curve formula;
the second gamma debugging module is configured to acquire a brightness value corresponding to each gray scale value in the second gray scale interval by using a second gamma curve formula; wherein the gamma value of the second gamma curve formula is equal to a standard gamma value.
7. The gamma debugging device according to claim 6, further comprising:
the first brightness acquisition module is configured to select a switching point of the first gray scale interval and the second gray scale interval and calculate a brightness value corresponding to the switching point by using a second gamma curve formula;
the second brightness acquisition module is configured to calculate the maximum brightness according to the gray-scale value and the brightness value of the switching point by using a formula with a third gamma curve; the gamma value of the third gamma curve formula is less than the standard gamma value;
a gamma curve fitting module configured to obtain the first gamma curve formula according to the maximum brightness and the third gamma curve formula.
8. A display device, characterized in that the display device comprises the gamma debugging device of claim 6 or 7.
9. An electronic device, comprising:
one or more processors;
a storage device having one or more programs stored thereon that, when executed by the one or more processors, cause the one or more processors to implement the gamma debugging method of any of claims 1-5;
one or more I/O interfaces connected between the processor and the memory and configured to enable information interaction between the processor and the memory.
10. A computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the gamma debugging method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210915312.XA CN115206236A (en) | 2022-07-29 | 2022-07-29 | Gamma debugging method, gamma debugging device and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210915312.XA CN115206236A (en) | 2022-07-29 | 2022-07-29 | Gamma debugging method, gamma debugging device and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115206236A true CN115206236A (en) | 2022-10-18 |
Family
ID=83585134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210915312.XA Pending CN115206236A (en) | 2022-07-29 | 2022-07-29 | Gamma debugging method, gamma debugging device and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115206236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115953982A (en) * | 2023-03-03 | 2023-04-11 | 北京数字光芯集成电路设计有限公司 | Gamma correction method and circuit for micro display chip |
-
2022
- 2022-07-29 CN CN202210915312.XA patent/CN115206236A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115953982A (en) * | 2023-03-03 | 2023-04-11 | 北京数字光芯集成电路设计有限公司 | Gamma correction method and circuit for micro display chip |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11107415B2 (en) | Display driving method and device, compression and decompression methods and devices, display device and storage medium | |
| CN107408367B (en) | Method, device and system for correcting unevenness of display screen | |
| CN109064979B (en) | Image display processing method and device, display device and storage medium | |
| US20190103062A1 (en) | Method and apparatus for compensating for brightness of display device | |
| US10748467B2 (en) | Display panel, display method thereof and display device | |
| US20210049977A1 (en) | Pixel rendering method, image rendering method, rendering apparatus, and display apparatus | |
| US10984698B2 (en) | Method of performing an image-adaptive tone mapping and display device employing the same | |
| US20220005393A1 (en) | Method and device for determining pixel compensation value, electronic device and storage medium | |
| US10755633B2 (en) | Compensation method and compensation device, display apparatus, display method and storage medium | |
| CN112116894B (en) | Brightness compensation method and device of display panel, display panel and storage medium | |
| JP7461891B2 (en) | Method and display device | |
| US11410628B2 (en) | Pixel voltage compensation method for liquid crystal display to suppress pixel electrode voltage cross-talk | |
| CN113470581B (en) | Method and device for controlling backlight brightness of display, electronic equipment and storage medium | |
| CN109036327A (en) | Gamma value adjusting method, device and the computer readable storage medium of display panel | |
| US11380275B2 (en) | Image processing method and device, display device and computer-readable storage medium | |
| US9530346B2 (en) | Organic light-emitting diode display and method of driving the same | |
| CN112017590A (en) | Mura compensation method, device, medium and electronic equipment for display panel | |
| KR20180056488A (en) | Display apparatus and method of driving the same | |
| CN115206236A (en) | Gamma debugging method, gamma debugging device and display device | |
| US10714034B2 (en) | Display device, control circuit of display panel, and display method | |
| CN109308874B (en) | Display screen brightness adjusting method and device | |
| US20210150962A1 (en) | Display driving device, display driving method, display module and display device | |
| CN116524871B (en) | Driving method, driving device, display device and electronic equipment | |
| CN117496884A (en) | Brightness adjusting method of display device and display device | |
| KR20160031597A (en) | Method of testing display apparatus and display apparatus tested by the same |
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 |