CN113112946B - Gamma debugging method, device and equipment - Google Patents
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- 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
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- G09G2320/00—Control of display operating conditions
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Abstract
The application discloses a gamma debugging method, a gamma debugging device and gamma debugging equipment. The method comprises the following steps: adjusting the frequency of an indication signal of the display panel to a second refresh rate, wherein the second refresh rate is greater than the first refresh rate, and the indication signal is used for indicating the start of a frame; adjusting the refresh rate of the grid drive circuit to a second refresh rate, and providing a first data voltage for the display panel so that the display panel displays a first test image at the first data voltage under the second refresh rate; adjusting the refresh rate of the gate drive circuit to a first refresh rate, and acquiring optical data of the display panel when the display panel displays a first test image at the first refresh rate by using a first data voltage; judging whether the optical data meet the preset target requirement or not; and if the optical data meet the preset target requirement, taking the first data voltage as the data voltage corresponding to the first test image at the first refresh rate. According to the embodiment of the application, the time length for carrying out gamma debugging under the low refresh rate can be reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a gamma debugging method, device and equipment.
Background
With the development of display technology, display panels can support a variety of refresh rates. Before the display panel leaves factory, gamma debugging is usually performed on each display panel, and the gamma debugging is required under each refresh rate of multiple refresh rates supported by the display panel, and in the prior art, the time length for performing gamma debugging under a low refresh rate is far longer than the time length for performing gamma debugging under a high refresh rate, so that the time length for performing gamma debugging on the display panel is long.
Disclosure of Invention
The embodiment of the application provides a gamma debugging method, a gamma debugging device and gamma debugging equipment, which can reduce the time for carrying out gamma debugging under a low refresh rate.
In a first aspect, an embodiment of the present application provides a gamma debugging method, configured to perform gamma debugging on a display panel at a first refresh rate, where the display panel includes a gate driving circuit, and the method includes: adjusting the frequency of an indication signal of the display panel to a second refresh rate, wherein the second refresh rate is greater than the first refresh rate, and the indication signal is used for indicating the start of a frame; adjusting the refresh rate of the gate driving circuit to a second refresh rate, and providing a first data voltage to the display panel so that the display panel displays a first test image at the first data voltage at the second refresh rate; adjusting the refresh rate of the gate drive circuit to a first refresh rate, and acquiring optical data of the display panel when the display panel displays a first test image at the first refresh rate by using a first data voltage; judging whether the optical data meets the preset target requirement or not; and if the optical data meet the preset target requirement, taking the first data voltage as the data voltage corresponding to the first test image at the first refresh rate.
In a possible implementation manner of the first aspect, the method further includes:
if the optical data does not meet the preset target requirement, adjusting the first data voltage;
adjusting the refresh rate of the gate driving circuit to a second refresh rate, and providing the adjusted first data voltage to the display panel so that the display panel displays the first test image by the adjusted first data voltage;
adjusting the refresh rate of the gate drive circuit to a first refresh rate, and acquiring optical data when the display panel displays a first test image at the first refresh rate by using the adjusted first data voltage;
judging whether the optical data corresponding to the adjusted first data voltage meets the preset target requirement or not;
if not, the steps are repeated until the optical data corresponding to the adjusted first data voltage meets the preset target requirement.
In a possible implementation manner of the first aspect, adjusting the refresh rate of the gate driving circuit to the second refresh rate includes:
and adjusting the frequency of an input signal of the gate driving circuit to a second refresh rate, wherein the input signal comprises a clock signal and a gate start signal.
In a possible implementation manner of the first aspect, adjusting the refresh rate of the gate driving circuit to the second refresh rate includes:
adjusting the refresh rate of the gate driving circuit to a second refresh rate in a period when the indication signal is at the active level;
adjusting a refresh rate of a gate drive circuit to a first refresh rate, comprising:
the refresh rate of the gate driving circuit is adjusted to a first refresh rate during a period in which the indication signal is at an active level.
In one possible implementation manner of the first aspect, after adjusting the refresh rate of the gate driving circuit to the second refresh rate, before supplying the first data voltage to the display panel, the method further includes:
the first test image is provided to the display panel to cause the display panel to display the first test image at the initial data voltage at the second refresh rate.
In a possible implementation manner of the first aspect, after adjusting the refresh rate of the gate driving circuit to the first refresh rate, and before acquiring the optical data when the display panel displays the first test image at the first data voltage at the first refresh rate, the method further includes:
and enabling the display panel to display the first test image at the first refresh rate by using the first data voltage, wherein the duration of the display panel displaying the first test image at the first refresh rate by using the first data voltage is one frame duration corresponding to the second refresh rate.
In a possible implementation manner of the first aspect, the indication signal includes a tearing effect TE signal or a signal that is output by a general purpose input output GPIO interface of the display panel and is identical to the TE signal.
In one possible implementation manner of the first aspect, the second refresh rate is a maximum refresh rate of the display panel;
and/or the optical data comprises luminance data and/or color coordinate data.
In a second aspect, an embodiment of the present application provides a gamma debugging apparatus for performing gamma debugging on a display panel at a first refresh rate, where the display panel includes a gate driving circuit, and the apparatus includes:
the display device comprises an indication signal adjusting module, a first refresh rate adjusting module and a second refresh rate adjusting module, wherein the indication signal adjusting module is used for adjusting the frequency of the indication signal output by the display panel to the second refresh rate, the second refresh rate is greater than the first refresh rate, and the indication signal is used for indicating the start of a frame;
the grid driving circuit adjusting module is used for adjusting the refresh rate of the grid driving circuit to a second refresh rate;
the display enabling module is used for enabling the display panel to display the first test image at the first data voltage under the second refresh rate;
the grid driving circuit adjusting module is also used for adjusting the refresh rate of the grid driving circuit to a first refresh rate;
the data acquisition module is used for acquiring optical data when the display panel displays a first test image at a first refresh rate by using a first data voltage;
the judging module is used for judging whether the optical data meets the preset target requirement or not;
and the data voltage determining module is used for taking the first data voltage as the data voltage corresponding to the first test image at the first refresh rate if the optical data meets the preset target requirement.
In a third aspect, an embodiment of the present application provides a gamma debugging device, including a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, where the program or the instruction, when executed by the processor, implements the steps of the gamma debugging method according to any one of the first aspect.
According to the embodiment of the application, when the gamma debugging is carried out on the display panel under the lower first refresh rate, the indication signal of the display panel is adjusted to be the higher second refresh rate, and the refresh rate of the grid drive circuit of the display panel is adjusted in real time. Taking an example that data voltage is provided to a display panel once every two frames, and optical data of the display panel is acquired once every two frames, the gamma debugging method provided by the embodiment of the application is equivalent to compressing the time length required for debugging the data voltage once to the time length of a second refresh rate of the two frames, and can reduce the debugging time length relative to the time length of a first refresh rate of the two frames, and the more the number of gray scale binding points and the number of brightness levels are, the longer the time length can be saved according to the gamma debugging method provided by the embodiment of the application, so that the time length for performing gamma debugging at a low refresh rate can be greatly reduced, and further the time length required for performing gamma debugging on the display panel can be integrally reduced.
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Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 illustrates a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating a gamma debugging method according to an embodiment of the present disclosure;
FIG. 3 is a schematic view illustrating a gamma debugging method according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a comparative flow chart of two gamma debugging methods according to an embodiment of the present application;
FIG. 5 is a flow chart illustrating a gamma debugging method according to another embodiment of the present application;
FIG. 6 is a diagram illustrating waveforms of indication signals and a gamma debugging step according to another embodiment of the present application;
FIG. 7 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present disclosure;
fig. 8 shows a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
To meet different demands of users, display panels are moving toward a trend that can support various refresh rates. Illustratively, the display panel may support refresh rates of 120Hz, 60Hz, 30Hz, and even 144 Hz. In addition, under each refresh rate, the display panel can be adjusted in brightness, for example, the brightness bars of the display panel can be adjusted to meet different brightness requirements.
Gamma (gamma) debugging of multiple gray scale bindings is required at each brightness level (different brightness levels correspond to different locations on the brightness bars of the display panel) at each refresh rate. In the gamma debugging process, the optical device is usually used to collect optical data for 1 time in 2 frames, for example, a lighting machine is used to write the debugged data voltage into each sub-pixel of the display panel in the previous frame, and the display panel displays the picture with the debugged data voltage, and the optical device is used to collect the optical data when the display panel displays the picture with the debugged data voltage in the next frame, and determine whether the collected optical data meets the target requirement.
The time length of each frame at the low refresh rate is longer than that of each frame at the high refresh rate, so that the total time length required for carrying out gamma debugging on the gray scale tie points at all brightness levels at the low refresh rate is far longer than that of the gray scale tie points at all brightness levels at the high refresh rate, the time length required for completing gamma debugging on all the refresh rates of the display panel is longer, and the capacity of a production line is influenced.
In order to solve the above problems, embodiments of a gamma debugging method, a gamma debugging apparatus, and a gamma debugging device are provided in the present application, and embodiments of the gamma debugging method, the gamma debugging apparatus, and the gamma debugging device will be described below with reference to the accompanying drawings.
The gamma debugging method provided by the embodiment of the application can be used for carrying out gamma debugging on the display panel. Illustratively, the display panel may be an Organic Light-Emitting Diode (OLED) display panel. The display panel may support different refresh rates, for example the display panel may support at least a first refresh rate and a second refresh rate, the second refresh rate being greater than the first refresh rate.
Illustratively, as shown in fig. 1, the display panel 100 includes a plurality of sub-pixels 10 distributed in an array. The plurality of sub-pixels 10 may be distributed in the display area in an array. The plurality of sub-pixels 10 may include sub-pixels capable of different colors, for example, the plurality of sub-pixels 10 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
Illustratively, the display panel 100 may further include a driving chip IC, a gate driving circuit VSR, a power signal line PVDD, a data signal line Vdata, a reference signal line Vref, a first scanning signal line S1, a second scanning signal line S2, and the like.
The gate driving circuit VSR may include a plurality of cascaded shift registers, and is connected to the sub-pixel 10 through the first and second scan signal lines S1 and S2, and is configured to provide a scan signal and/or a light emission control signal to the sub-pixel 10. The driving chip IC provides a gate start signal STV to the gate driving circuit VSR. In addition, the second scanning signal line S2 of the current row may be multiplexed into the first scanning signal line S1 of the next row.
In addition, a clock signal line CLK may be connected between the gate driving circuit VSR and the driving chip IC, and the driving chip IC supplies a clock signal to the gate driving circuit VSR.
As shown in fig. 2, the gamma debugging method provided in the embodiment of the present application includes steps 110 to 150.
Step 120, adjusting the refresh rate of the gate driving circuit to a second refresh rate, so that the display panel displays the first test image at the first data voltage at the second refresh rate.
Step 130, adjusting the refresh rate of the gate driving circuit to a first refresh rate, and obtaining optical data when the display panel displays the first test image at the first refresh rate and with the first data voltage.
In order to better understand the gamma debugging method provided in the embodiment of the present application, as shown in fig. 3, the display panel may be gamma debugged by using a lighting unit (PG) and an optical device. The executing main body of the gamma debugging method provided by the embodiment of the application can be a lighting machine. The lighting machine receives the indication signal of the display panel, then provides data voltage for each sub-pixel of the display panel, and sends the received indication signal to the optical equipment, the optical equipment collects the optical data of the display panel, and sends the collected optical data to the lighting machine, and the lighting machine further determines whether the data voltage provided for each sub-pixel needs to be modified according to the optical data obtained from the optical equipment. The frequency of the indicator signal may also be understood as the operating frequency of the lighting engine and the optical device, the lighting engine usually provides the data voltage to the display panel once every two frames, and the optical device usually collects the optical data of the display panel once every two frames.
In order to better understand the beneficial effects of the gamma debugging method provided by the embodiment of the present application, as shown in fig. 4, a in fig. 4 is a waveform diagram of the indication signal and the gamma debugging step corresponding to the gamma debugging method provided by the embodiment of the present application, and B is a waveform diagram of the indication signal and the gamma debugging step corresponding to the gamma debugging method of the related art.
The difference between the A and the B is that when the gamma debugging is carried out on the display panel under the first refresh rate, the gamma debugging method provided by the embodiment of the application adjusts the frequency of the indication signal of the display panel to be the second refresh rate; however, when the gamma debugging method of the related art performs the gamma debugging on the display panel at the first refresh rate, the frequency of the indication signal of the display panel is not adjusted, that is, when the gamma debugging method of the related art performs the gamma debugging on the display panel at the first refresh rate, the frequency of the indication signal of the display panel is still the first refresh rate. The second refresh rate is greater than the first refresh rate, and illustratively, the second refresh rate may be 120Hz and the first refresh rate may be 60Hz or 30 Hz.
In addition, when the gamma debugging method of the related art performs gamma debugging on the display panel at the first refresh rate, the refresh rate of the gate driving circuit of the display panel is always the first refresh rate. In the gamma debugging method provided by the embodiment of the application, when the gamma debugging is performed on the display panel at the first refresh rate, the refresh rate of the gate driving circuit is also adjusted. Specifically, the refresh rate of the gate driving circuit is adjusted to a second refresh rate, and when the refresh rate of the gate driving circuit is the second refresh rate, the first data voltage is provided to the display panel, and the display panel displays the first test image at the second refresh rate by using the first data voltage. That is to say, the gamma debugging method provided by the embodiment of the application is to complete the writing of the first data voltage and light up the display panel when the indication signal and the frequency of the gate driving circuit are the second refresh rate. Because the gamma debugging is performed on the display panel at the first refresh rate, the gamma debugging method provided by the embodiment of the application further adjusts the refresh rate of the gate driving circuit to the first refresh rate, so as to meet the display condition of the display panel at the first refresh rate, and obtain the optical data of the display panel when the first test image is displayed at the first refresh rate by the first data voltage.
It can be understood that according to the gamma debugging method of the related art, the operating frequencies of the lighting engine and the optical device are both the first refresh rate, whereas according to the gamma debugging method provided by the embodiment of the present application, the operating frequencies of the lighting engine and the optical device are both the second refresh rate.
For example, as shown in fig. 4, taking an example that a data voltage is provided to a display panel every two frames and optical data of the display panel is acquired every two frames, that is, a duration of two frames is required for debugging the data voltage once, a gamma debugging method in the related art is a duration of a first refresh rate of two frames, and a gamma debugging method provided in this embodiment of the present application is a duration of a second refresh rate of two frames. For example, taking the second refresh rate as 120Hz and the first refresh rate as 60Hz as an example, the gamma debugging method provided by the embodiment of the present application can save the duration of 60Hz for 1 frame compared with the gamma debugging method of the related art.
It is understood that the duration required to complete step 120 is the duration corresponding to the previous frame at the second refresh rate, and the duration required to complete steps 130 and 140 is the duration corresponding to the next frame at the second refresh rate.
To sum up, according to the gamma debugging method provided by the embodiment of the application, when the gamma debugging is performed on the display panel at the lower first refresh rate, the indication signal of the display panel is adjusted to the higher second refresh rate, and the refresh rate of the gate driving circuit of the display panel is adjusted in real time. Taking an example that data voltage is provided to a display panel once every two frames, and optical data of the display panel is acquired once every two frames, the gamma debugging method provided by the embodiment of the application is equivalent to compressing the time length required for debugging the data voltage once to the time length of a second refresh rate of the two frames, and can reduce the debugging time length relative to the time length of a first refresh rate of the two frames, and the more the number of gray scale binding points and the number of brightness levels are, the longer the time length can be saved according to the gamma debugging method provided by the embodiment of the application, so that the time length for performing gamma debugging at a low refresh rate can be greatly reduced, and further the time length required for performing gamma debugging on the display panel can be integrally reduced.
For example, the first test image may be an image corresponding to any gray-scale binding point. For example, the display panel is an 8-bit display panel, which can display images with 0-255 gray scales, and when the display panel is subjected to gamma debugging, in order to save debugging time, some gray scales are usually selected from the 0-255 gray scales as gray scale tie points, so that the gamma debugging is only carried out on the gray scale tie points.
For example, when gamma debugging is performed on a first display panel of a plurality of display panels of the same batch, the first data voltage may be set empirically. When the gamma debugging is performed on the display panels except the first display panel in the display panels of the same batch, the first data voltages of the other display panels may be the data voltages corresponding to the first test image of the first display panel of the same batch at the first refresh rate to complete the gamma debugging. Since the first display panel is used for completing gamma debugging, optical data of the first display panel when the first display panel displays the first test image at the data voltage under the first refresh rate meets the target requirement, and other display panels and the first display panel belong to the same batch and have basically the same characteristics, so that the data voltage corresponding to the first display panel is directly used as the first data voltage of other display panels, the debugging times of the data voltages of other display panels can be reduced, and the gamma debugging time of other display panels can be shortened.
For example, the indication signal of the display panel may be sent by a driving chip IC of the display panel. In order to prevent the display panel from tearing during the display process, the driver IC of the display panel usually outputs a Tear Effect (TE) signal. In some optional embodiments, the indication signal in the embodiment of the present application may be a tearing effect TE signal, so that it is not necessary to provide an additional signal interface to output an indication signal indicating the start of the frame. The driving chip IC of the display panel usually includes a General-purpose input/output (GPIO) interface, and in alternative embodiments, the indication signal may also be a signal that is output by the GPIO interface of the display panel and is the same as the TE signal.
In some alternative embodiments, the second refresh rate is a maximum refresh rate of the display panel. When the gamma debugging is performed on the display panel at the second refresh rate, the frequency of the indication signal of the display panel and the refresh rate of the gate driving circuit do not need to be adjusted, and the step of performing the gamma debugging on the display panel at the second refresh rate can be simplified. In addition, when the second refresh rate is the maximum refresh rate of the display panel, the time length required for gamma debugging of the display panel at the first refresh rate can be shortened to the maximum extent.
In some alternative embodiments, the brightness and/or color coordinates of the display panel may be gamma adjusted. The optical data may include luminance data and/or color coordinate data. Correspondingly, the target requirements may include a target luminance requirement and/or a target color coordinate requirement.
As shown in fig. 1, the driving chip IC of the display panel supplies a clock signal CLK and a gate start signal STV to the gate driving circuit VSR. The refresh rate of the gate drive circuit is related to the input signals it receives, including the clock signal CLK and the gate start signal STV. Therefore, adjusting the refresh rate of the gate drive circuit may be achieved by adjusting the frequency of the input signal received by the gate drive circuit.
In some optional embodiments, adjusting the refresh rate of the gate driving circuit to the second refresh rate in step 120 may include: the frequency of the input signal of the gate drive circuit is adjusted to a second refresh rate. Of course, the adjusting the refresh rate of the gate driving circuit to the first refresh rate in step 130 may include: the frequency of the input signal of the gate drive circuit is adjusted to a first refresh rate. The input signals include a clock signal and a gate start signal.
For example, the waveform of the clock signal is usually high and low levels alternated, and the frequency of the clock signal can be adjusted by adjusting the time length occupied by the high level and the low level of the clock signal. It can be understood that the longer the high level and the low level of the clock signal occupy, the smaller the frequency of the clock signal; the shorter the duration of the high and low levels of the clock signal, the greater the frequency of the clock signal. The waveform of the gate start signal usually includes only one active level in a period of one frame, and the active level may be a low level or a high level. The frequency of the gate start signal can be adjusted by adjusting the duration of the active level of the gate start signal. It can be understood that the longer the duration of the effective level of the gate start signal is, the smaller the frequency of the gate start signal is; the shorter the duration of the active level of the gate start signal is, the greater the frequency of the gate start signal is.
In the case where the refresh rate supportable by the display panel is determined, the waveform of the input signal corresponding to each refresh rate of the gate driving circuit is also determined, and therefore, in the process of performing the gamma debugging, the refresh rate of the gate driving circuit may be adjusted to the second refresh rate by selecting the waveform of the input signal at the second refresh rate of the gate driving circuit, and the refresh rate of the gate driving circuit may be adjusted to the first refresh rate by selecting the waveform of the input signal at the first refresh rate of the gate driving circuit.
In some optional embodiments, as shown in fig. 5, the gamma debugging method provided in the embodiments of the present application may further include steps 161 to 164.
In step 161, if the optical data does not meet the predetermined target requirement, the first data voltage is adjusted.
Step 162, adjusting the refresh rate of the gate driving circuit to a second refresh rate, and providing the adjusted first data voltage to the display panel, so that the display panel displays the first test image with the adjusted first data voltage.
In step 164, it is determined whether the optical data corresponding to the adjusted first data voltage meets a predetermined target requirement.
If not, the steps are repeated until the optical data corresponding to the adjusted first data voltage meets the preset target requirement.
According to the embodiment of the application, when gamma debugging is performed each time, the refresh rate of the gate driving circuit is adjusted to the second refresh rate, when the refresh rate of the gate driving circuit is the second refresh rate, the adjusted first data voltage is provided for the display panel, and the display panel displays the first test image at the second refresh rate by the adjusted first data voltage. That is to say, the gamma debugging method provided by the embodiment of the application is to complete the writing of the adjusted first data voltage and light up the display panel when the indication signal and the frequency of the gate driving circuit are the second refresh rate. Because the gamma debugging is to be performed on the display panel at the first refresh rate, the gamma debugging method provided in the embodiment of the application further adjusts the refresh rate of the gate driving circuit to the first refresh rate, so as to meet the display condition of the display panel at the first refresh rate, and obtains optical data of the display panel when displaying the first test image at the adjusted first data voltage at the first refresh rate, and further determines whether the optical data corresponding to the adjusted first data voltage meets a preset target requirement, and if the optical data corresponding to the adjusted first data voltage does not meet the preset target requirement, repeat the above steps 161 to 164 until the optical data corresponding to the adjusted first data voltage meets the preset target requirement.
For example, as shown in fig. 4, the data voltage is still provided to the display panel every two frames, the optical data of the display panel is obtained every two frames, the second refresh rate is 120Hz, the first refresh rate is 60Hz, and each gray-scale binding point is debugged once more, so that compared with the gamma debugging method in the related art, the gamma debugging method provided in the embodiment of the present application can save the duration of 1 frame at 60 Hz. Taking as an example that each gray level binding point needs to be debugged 6 times, gamma debugging needs to be performed at 10 brightness levels, and each brightness level needs to debug 15 gray level binding points, the time that can be saved by the gamma debugging method provided by the embodiment of the present application is 10 × 15 × 6 × 16.666 — 15 seconds. For another example, taking the second refresh rate as 120Hz and the first refresh rate as 30Hz as an example, the gamma debugging method provided by the embodiment of the present application can save the duration of 60Hz for 3 frames compared with the gamma debugging method of the related art. Still taking the example that each gray level binding point needs to be debugged 6 times, gamma debugging needs to be performed at 3 brightness levels, and 15 gray level binding points need to be debugged at each brightness level, the time duration saved by the gamma debugging method provided by the embodiment of the present application is 3 × 15 × 6 × 3 × 16.666 — 13.5 seconds.
Therefore, according to the embodiment of the application, the time length required by debugging at any gray scale binding point at each time can be compressed into the time length of two frames of second refresh rate, and the debugging total time length can be reduced compared with the time length required by the first refresh rate of two frames at each time, and the debugging times, the gray scale binding point number and the brightness level number are more, so that the time length can be saved by the gamma debugging method provided by the embodiment of the application is longer, the time length for gamma debugging at low refresh rate can be further greatly reduced, and the time length required by gamma debugging on the display panel can be further reduced on the whole.
It can be understood that if the optical data corresponding to the adjusted first data voltage meets the preset target requirement, the first data voltage does not need to be adjusted, and the adjusted first data voltage can be directly used as the data voltage corresponding to the first test image at the first refresh rate. And if the first data voltage is adjusted for multiple times until the optical data corresponding to the first data voltage after the last adjustment meets the preset target requirement, taking the first data voltage after the last adjustment as the data voltage corresponding to the first test image under the first refresh rate.
For example, the steps of obtaining optical data of the display panel, determining whether the optical data meets the target requirement, and not meeting the requirement of continuously adjusting the first data voltage may be completed within the same frame.
For example, in a case that the executing body of the gamma debugging method provided in the embodiment of the present application is a lighting machine, a register may be disposed inside the lighting machine, an initial value of the register corresponds to the first data voltage, and when the first data voltage needs to be adjusted subsequently, a value of the register may be adjusted to obtain the adjusted first data voltage.
The indication signal is used to indicate the start of a frame, and for example, before each frame starts, the driving chip of the display panel may send out a single pulse of the indication signal. The active level of the indicator signal may be high. Of course, the active level of the indication signal may also be a low level, which is not limited in this application.
In some optional embodiments, adjusting the refresh rate of the gate driving circuit to the second refresh rate in step 120 or step 162 may include: and adjusting the refresh rate of the gate drive circuit to a second refresh rate in a period in which the indication signal is at the active level. Adjusting the refresh rate of the gate driving circuit to the first refresh rate in step 130 or step 163 may include: during the period when the indication signal is at the active level, the refresh rate of the gate drive circuit is adjusted to a first refresh rate.
For example, the lighting device writes the data voltage to the display panel during a period in which the indication signal is at an active level, and the display panel performs light emission display during a period in which the indication signal is at an inactive level. In the embodiment of the application, the refresh rate of the gate driving circuit is adjusted in the period when the indication signal is at the active level, but not adjusted in the period when the indication signal is at the inactive level, so that the display of the display panel can be prevented from being influenced.
In some optional embodiments, as shown in fig. 6, after adjusting the refresh rate of the gate driving circuit to the second refresh rate, before providing the first data voltage to the display panel, the gamma debugging method provided in the embodiment of the present application may further include: the first test image is provided to the display panel to cause the display panel to display the first test image at the initial data voltage at the second refresh rate.
That is, the first test image (i.e. the gray level binding image to be debugged) is sent to the display panel, the initial data voltage is generally the data voltage randomly generated by the driving chip IC of the display panel, and usually, the optical data under the randomly generated data voltage is not in accordance with the target requirement, so that the optical data corresponding to the randomly generated data voltage does not need to be obtained.
According to the embodiment of the application, the first test image is sent to the display panel firstly, so that the first data voltage and the adjusted first data voltage can be ensured to correspond to the first test image, and the gamma debugging under the first test image is completed.
As described above, since the frequency of the indication signal is adjusted to the higher second refresh rate, and the lighting device and the optical device are operated under the indication of the indication signal, that is, the operating frequency of the lighting device and the optical device is equivalent to the higher second refresh rate, the optical device can complete the collection of the optical data of the display panel within the one-frame time period corresponding to the second refresh rate. Therefore, in some optional embodiments, after adjusting the refresh rate of the gate driving circuit to the first refresh rate, and before acquiring the optical data when the display panel displays the first test image at the first data voltage at the first refresh rate, the gamma debugging method provided in the embodiments of the present application may further include: and enabling the display panel to display the first test image at the first refresh rate by using the first data voltage, wherein the duration of the display panel displaying the first test image at the first refresh rate by using the first data voltage is one frame duration corresponding to the second refresh rate.
That is, although the refresh rate of the gate driving circuit is adjusted to the lower first refresh rate, the optical device can complete the acquisition of the optical data of the display panel within the frame duration corresponding to the second refresh rate, and therefore, when the refresh rate of the gate driving circuit is the first refresh rate, the duration of displaying the image by the display panel at the first refresh rate may not be equal to the frame duration corresponding to the first refresh rate, but the duration of displaying the image by the display panel at the first refresh rate is shortened to the frame duration corresponding to the second refresh rate, so that the duration of performing the gamma debugging at the low refresh rate can be reduced without affecting the acquisition of the optical data.
It should be noted that, in the gamma debugging method provided in the embodiment of the present application, the execution main body may be a gamma debugging apparatus, or a control module in the gamma debugging apparatus for executing the gamma debugging method. In the embodiment of the present application, a gamma debugging method executed by a gamma debugging apparatus is taken as an example to illustrate the gamma debugging apparatus provided in the embodiment of the present application.
As shown in fig. 7, the gamma debugging apparatus 700 according to the embodiment of the present application includes an indication signal adjusting module 701, a gate driving circuit adjusting module 702, a display enabling module 703, a data obtaining module 704, a determining module 705, and a data voltage determining module 706.
The gamma debugging device 700 provided by the embodiment of the application is used for performing gamma debugging on a display panel under a first refresh rate, the display panel comprises a gate driving circuit, and the device comprises:
and an indication signal adjusting module 701, configured to adjust a frequency of the indication signal output by the display panel to a second refresh rate, where the second refresh rate is greater than the first refresh rate, and the indication signal is used to indicate a start of a frame.
And a gate driving circuit adjusting module 702, configured to adjust the refresh rate of the gate driving circuit to a second refresh rate.
The display enabling module 703 is configured to provide the first data voltage to the display panel, so that the display panel displays the first test image at the first data voltage at the second refresh rate.
The gate driving circuit adjusting module 702 is further configured to adjust the refresh rate of the gate driving circuit to a first refresh rate.
The data obtaining module 704 is configured to obtain optical data when the display panel displays the first test image at the first data voltage at the first refresh rate.
The determining module 705 is configured to determine whether the optical data meets a preset target requirement.
The data voltage determining module 706 is configured to, if the optical data meets a preset target requirement, use the first data voltage as a data voltage corresponding to the first test image at the first refresh rate.
According to the gamma debugging device provided by the embodiment of the application, when the gamma debugging is performed on the display panel at the lower first refresh rate, the indication signal of the display panel is adjusted to the higher second refresh rate, and the refresh rate of the gate drive circuit of the display panel is adjusted in real time. Taking the example that once data voltage is provided to the display panel every two frames and once optical data of the display panel is acquired every two frames, the gamma debugging method provided by the embodiment of the application is equivalent to compressing the time required for debugging the data voltage once to the time of the second refresh rate of the two frames, and can reduce the debugging time relative to the time of the first refresh rate of the two frames, and the more the number of gray scale binding points and the number of brightness levels, the longer the time can be saved by the gamma debugging method provided by the embodiment of the application, so that the time used for gamma debugging at a low refresh rate can be greatly reduced, and further the time required for gamma debugging of the display panel can be integrally reduced.
In some optional embodiments, the gamma debugging apparatus provided in the embodiments of the present application may further include a data voltage adjusting module.
The data voltage adjustment module is used for: if the optical data does not meet the preset target requirement, the first data voltage is adjusted.
The gate driver circuit adjustment module 702 is further configured to: the refresh rate of the gate drive circuit is adjusted to a second refresh rate. The display enabling module 703 is further configured to: and providing the adjusted first data voltage to the display panel so that the display panel displays the first test image by the adjusted first data voltage.
The gate driver circuit adjustment module 702 is further configured to: the refresh rate of the gate drive circuit is adjusted to a first refresh rate. The data acquisition module 704 is further configured to: and acquiring optical data when the display panel displays the first test image at the first refresh rate by the adjusted first data voltage.
The determining module 705 is further configured to: and judging whether the optical data corresponding to the adjusted first data voltage meets the preset target requirement or not.
The data voltage determination module 706 is further configured to: if not, the steps are repeated until the optical data corresponding to the adjusted first data voltage meets the preset target requirement.
In some optional embodiments, the gate driving circuit adjusting module 702 is specifically configured to:
and adjusting the frequency of an input signal of the gate driving circuit to a second refresh rate, wherein the input signal comprises a clock signal and a gate start signal.
In some optional embodiments, the gate driving circuit adjusting module 702 is specifically configured to:
adjusting the refresh rate of the gate driving circuit to a second refresh rate in a period when the indication signal is at the active level;
the refresh rate of the gate driving circuit is adjusted to a first refresh rate during a period in which the indication signal is at an active level.
In some optional embodiments, the display enabling module 703 is further configured to: and providing the initial data voltage to the display panel so that the display panel displays the first test image at the initial data voltage at a second refresh rate.
In some optional embodiments, the display enabling module 703 is further configured to: and enabling the display panel to display the first test image at the first refresh rate by using the first data voltage, wherein the duration of the display panel displaying the first test image at the first refresh rate by using the first data voltage is one frame duration corresponding to the second refresh rate.
In some optional embodiments, the indication signal includes a tearing effect TE signal or a signal which is output by a general purpose input output GPIO interface of the display panel and is the same as the TE signal.
In some alternative embodiments, the second refresh rate is a maximum refresh rate of the display panel; and/or the optical data comprises luminance data and/or color coordinate data.
The gamma debugging device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The embodiments of the present application are not particularly limited.
For example, the gamma debugging device in the embodiment of the present application may be a lighting engine. For example, the lighting device may also be referred to as a jig.
The gamma debugging device provided by the embodiment of the application can realize each process in the gamma debugging method embodiment, and is not repeated here for avoiding repetition.
Fig. 8 shows a hardware structure diagram of a gamma debugging device provided in an embodiment of the present application.
The gamma debugging device may comprise a processor 901 and a memory 902 in which computer program instructions are stored.
Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing the embodiments of the present invention.
The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement any one of the gamma debugging methods in the above embodiments.
In one example, the gamma debugging device may also include a communication interface 903 and a bus 910. As shown in fig. 8, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.
The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
The gamma debugging device can perform the gamma debugging method in the embodiment of the present application, thereby implementing the gamma debugging method and the gamma debugging apparatus described in conjunction with fig. 2 and fig. 7.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the gamma debugging method in the foregoing embodiment can be implemented, and the same technical effect can be achieved. The computer-readable storage medium may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, which is not limited herein.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. "computer-readable media" may include any medium that can store or transfer information. Examples of computer readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
According to embodiments of the present application, the computer-readable storage medium may be a non-transitory computer-readable storage medium.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed at the same time.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A method for gamma debugging a display panel at a first refresh rate, the display panel including a gate drive circuit, the method comprising:
adjusting the frequency of an indication signal of the display panel to a second refresh rate, wherein the second refresh rate is greater than the first refresh rate, and the indication signal is used for indicating the start of a frame;
adjusting the refresh rate of the gate driving circuit to the second refresh rate, and providing a first data voltage to the display panel so that the display panel displays a first test image at the first data voltage at the second refresh rate;
adjusting the refresh rate of the gate drive circuit to the first refresh rate, and acquiring optical data of the display panel when the display panel displays a first test image at the first refresh rate by the first data voltage;
judging whether the optical data meet the preset target requirement or not;
and if the optical data meet the preset target requirement, taking the first data voltage as the data voltage corresponding to the first test image at the first refresh rate.
2. The gamma debugging method of claim 1, further comprising:
if the optical data do not meet the preset target requirement, adjusting the first data voltage;
adjusting the refresh rate of the gate driving circuit to the second refresh rate, and providing the adjusted first data voltage to the display panel, so that the display panel displays a first test image with the adjusted first data voltage;
adjusting the refresh rate of the gate drive circuit to the first refresh rate, and acquiring optical data of the display panel when displaying a first test image at the first refresh rate by the adjusted first data voltage;
judging whether the optical data corresponding to the adjusted first data voltage meets the preset target requirement or not;
if not, repeating the steps until the optical data corresponding to the adjusted first data voltage meets the preset target requirement.
3. The gamma debugging method of claim 1, wherein the adjusting the refresh rate of the gate drive circuit to the second refresh rate comprises:
adjusting a frequency of an input signal of the gate drive circuit to the second refresh rate, wherein the input signal includes a clock signal and a gate start signal.
4. The gamma debugging method of claim 1 or 2,
the adjusting the refresh rate of the gate driving circuit to the second refresh rate includes:
adjusting the refresh rate of the gate driving circuit to the second refresh rate in a period in which the indication signal is at an active level;
the adjusting the refresh rate of the gate driving circuit to the first refresh rate includes:
and adjusting the refresh rate of the gate driving circuit to the first refresh rate in a period in which the indication signal is at an active level.
5. The gamma debugging method of claim 1, wherein after the adjusting the refresh rate of the gate driver circuit to the second refresh rate, prior to providing the first data voltage to the display panel, the method further comprises:
providing the first test image to the display panel to cause the display panel to display the first test image at an initial data voltage at the second refresh rate.
6. The gamma debugging method of claim 1, wherein after the adjusting the refresh rate of the gate drive circuit to the first refresh rate and before obtaining optical data for the display panel when displaying a first test image at the first data voltage at the first refresh rate, the method further comprises:
and enabling the display panel to display the first test image at the first data voltage at the first refresh rate, wherein the time length of the display panel displaying the first test image at the first data voltage at the first refresh rate is one frame time length corresponding to the second refresh rate.
7. The gamma debugging method of claim 1, wherein the indication signal comprises a tearing TE signal or a signal outputted by a general purpose input output GPIO interface of the display panel and identical to the TE signal.
8. The gamma debugging method of claim 1, wherein the second refresh rate is a maximum refresh rate of the display panel;
and/or the optical data comprises luminance data and/or color coordinate data.
9. A gamma debugging apparatus for gamma debugging a display panel at a first refresh rate, the display panel including a gate driving circuit, the apparatus comprising:
the display device comprises an indication signal adjusting module, a first refreshing module and a second refreshing module, wherein the indication signal adjusting module is used for adjusting the frequency of the indication signals output by the display panel to a second refreshing rate, the second refreshing rate is larger than the first refreshing rate, and the indication signals are used for indicating the start of frames;
the grid driving circuit adjusting module is used for adjusting the refresh rate of the grid driving circuit to the second refresh rate;
a display enabling module for enabling the display panel to display a first test image at a first data voltage at the second refresh rate;
the grid driving circuit adjusting module is further used for adjusting the refresh rate of the grid driving circuit to the first refresh rate;
the data acquisition module is used for acquiring optical data when the display panel displays a first test image at the first data voltage under the first refresh rate;
the judging module is used for judging whether the optical data meet the preset target requirement or not;
and the data voltage determining module is used for taking the first data voltage as the data voltage corresponding to the first test image at the first refresh rate if the optical data meets the preset target requirement.
10. A gamma debugging device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which program or instructions, when executed by the processor, implement the steps of the gamma debugging method of any one of claims 1 to 8.
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| CN111739457B (en) * | 2020-07-03 | 2022-04-12 | 昆山国显光电有限公司 | Gamma debugging system and gamma debugging method |
| CN111798787B (en) * | 2020-07-09 | 2022-10-11 | 昆山国显光电有限公司 | Method, device and system for adjusting brightness of display panel |
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