CN108172150B - Display screen detection method and device - Google Patents
Display screen detection method and device Download PDFInfo
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- CN108172150B CN108172150B CN201711342623.7A CN201711342623A CN108172150B CN 108172150 B CN108172150 B CN 108172150B CN 201711342623 A CN201711342623 A CN 201711342623A CN 108172150 B CN108172150 B CN 108172150B
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- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The invention discloses a detection method and device for a display screen, and belongs to the technical field of display. The method comprises the following steps: adjusting the light display parameters of the display screen to be detected through an automatic gamma process; determining picture compensation parameters of the display screen through a gamma detection process, wherein in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed; when the display screen needs to perform picture compensation, starting a picture compensation function of the display screen, and burning picture compensation parameters to a specified position of the display screen; the screen of the display screen is lightened, so that the display screen obtains the picture compensation parameters in the appointed position, the problems that the display screen needing compensation and the display screen not needing compensation in the related technology need to be independently detected, the efficiency is low, and the cost is high are solved, and the effects of improving the detection efficiency and reducing the detection cost are achieved. The invention is used for detecting the display screen.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display screen detection method and device.
Background
For the display screen of the display device, the brightness uniformity and the afterimage of the display screen still remain the main problems, and a screen compensation process is usually adopted to improve the brightness uniformity and the afterimage phenomenon of the display screen. In practical application, some display screens need to be subjected to a picture compensation process, and some display screens do not need to be subjected to the picture compensation process due to good display effect.
In the related art, in the process of detecting the display screen, the display screen (for short, the first display screen) which needs to be compensated corresponds to one set of process flow, and the display screen (for short, the second display screen) which does not need to be compensated corresponds to the other set of process flow. The process flow corresponding to the first display screen comprises an automatic gamma process, a gamma detection process and a product inspection process, and in all the processes, the picture compensation function of the first display screen is always closed; the process flow corresponding to the second display screen comprises an automatic gamma process, a gamma detection process, a picture compensation process and a product inspection process, and the picture compensation function of the second display screen is started from the automatic gamma process. The automatic gamma process is used for adjusting parameters such as chromaticity of the display screen, and the gamma detection process is used for determining picture compensation parameters of the display screen.
However, the first display screen and the second display screen need to be detected independently at present, so that the efficiency is low, and the cost is high.
Disclosure of Invention
The embodiment of the invention provides a method and a device for detecting a display screen, which can solve the problems that the display screen needing compensation and the display screen not needing compensation in the related technology need to be detected independently, the efficiency is lower, and the cost is higher, and the technical scheme is as follows:
in a first aspect, a method for detecting a display screen is provided, where the method includes:
adjusting the light display parameters of the display screen to be detected through an automatic gamma process;
determining picture compensation parameters of the display screen through a gamma detection process, wherein in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed;
when the display screen needs to be subjected to picture compensation, starting a picture compensation function of the display screen, and burning the picture compensation parameters to a specified position of the display screen;
and lightening the screen of the display screen to enable the display screen to acquire the picture compensation parameters in the appointed position.
Optionally, the display screen is provided with an integrated circuit IC module, the IC module is provided with a one-time programmable OTP sub-module,
the starting of the picture compensation function of the display screen comprises the following steps:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule.
Optionally, after determining the picture compensation parameter of the display screen through the gamma detection process, the method further includes:
and when the display screen does not need to carry out picture compensation, forbidding starting the picture compensation function of the display screen.
Optionally, the light display parameters include chromaticity, and the adjusting of the light display parameters of the display screen to be detected by the automatic gamma process includes:
and adjusting the chromaticity of the display screen to be target chromaticity through the automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
Optionally, the display screen is provided with a storage module, the burning of the picture compensation parameter to the designated position of the display screen includes:
and burning the picture compensation parameters to the storage module.
Optionally, the display screen includes a protective cover plate and a display panel, and before the optical display parameters of the display screen to be detected are adjusted through the automatic gamma process, the method further includes:
and attaching the protective cover plate and the display panel to obtain the display screen.
Optionally, after the lighting the screen of the display screen, the method further includes:
and checking the current optical display parameters of the lighted display screen through a product inspection process.
Optionally, the light display parameters further include color temperature and hue.
In a second aspect, there is provided a device for detecting a display screen, the device comprising:
the adjusting module is used for adjusting the optical display parameters of the display screen to be detected through an automatic gamma process;
the determining module is used for determining picture compensation parameters of the display screen through a gamma detection process, and in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed;
the starting module is used for starting the picture compensation function of the display screen when the display screen needs to carry out picture compensation, and burning the picture compensation parameters to the specified position of the display screen;
and the lighting module is used for lighting the screen of the display screen so that the display screen acquires the picture compensation parameters in the appointed position.
Optionally, the display screen is provided with an integrated circuit IC module, the IC module is provided with a one-time programmable OTP sub-module,
the opening module is used for:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule.
Optionally, the apparatus further comprises:
and the processing module is used for forbidding starting the picture compensation function of the display screen when the display screen does not need picture compensation.
Optionally, the light display parameter includes chromaticity, and the adjusting module is configured to:
and adjusting the chromaticity of the display screen to be target chromaticity through the automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
Optionally, the display screen is provided with a storage module, and the opening module is configured to:
and burning the picture compensation parameters to the storage module.
Optionally, the display screen includes a protective cover plate and a display panel, and the apparatus further includes:
and the laminating module is used for laminating the protective cover plate and the display panel to obtain the display screen.
Optionally, the apparatus further comprises:
and the inspection module is used for inspecting the current optical display parameters of the lighted display screen through a product inspection process.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the detection method and device for the display screen, provided by the embodiment of the invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed, when the display screen to be detected needs to be subjected to picture compensation, the picture compensation function of the display screen is started, the picture compensation parameters are burnt to the specified position of the display screen, and then the screen of the display screen is lightened, so that the display screen to be compensated and the display screen not needing compensation do not need to be independently detected, the detection efficiency is improved, and the detection cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting a display screen according to an embodiment of the present invention;
FIG. 2 is a flow chart of another display screen detection method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a detection apparatus for a display screen according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display screen detection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a detection method of a display screen, which comprises the following steps of:
And 102, determining picture compensation parameters of the display screen through a gamma detection process, wherein in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed.
And 103, when the display screen needs to perform picture compensation, starting a picture compensation function of the display screen, and burning picture compensation parameters to a specified position of the display screen.
And 104, lightening the screen of the display screen to enable the display screen to acquire the picture compensation parameters in the appointed position.
In summary, in the detection method for the display screen provided by the embodiment of the invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is turned off, when the display screen to be detected needs to be subjected to picture compensation, the picture compensation function of the display screen is turned on, the picture compensation parameters are burned to the specified position of the display screen, and then, the screen of the display screen is turned on, so that the display screen needing to be compensated and the display screen not needing to be compensated do not need to be independently detected, the detection efficiency is improved, and the detection cost is reduced.
An embodiment of the present invention provides another method for detecting a display screen, as shown in fig. 2, the method may include:
and step 201, attaching the protective cover plate and the display panel to obtain the display screen.
The display screen to be detected comprises a protective cover plate and a display panel, and the protective cover plate can be a glass cover plate.
Optionally, the light display parameter includes chromaticity, and accordingly, step 202 may include:
and adjusting the chromaticity of the display screen to be target chromaticity by an automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
The preset chromaticity range is the chromaticity range acceptable to human eyes, and in this step, the chromaticity of the display screen can be adjusted to the chromaticity acceptable to human eyes through an automatic gamma (Auto gamma) process.
Further, the light display parameters may also include color temperature and hue. The color temperature of the display screen can be adjusted to meet the required color temperature through the automatic gamma process, and the color tone of the display screen can be adjusted to meet the required color tone.
Reference may be made to the related art for a specific procedure of the automatic gamma process.
And step 203, determining picture compensation parameters of the display screen through a gamma detection process.
The gamma detection (gamma check) process is used for collecting picture data of the display screen and obtaining picture compensation parameters based on the collected picture data, and the picture compensation parameters are used for carrying out picture compensation on the display screen.
For the display screen which needs to be subjected to picture compensation and the display screen which does not need to be subjected to picture compensation, the picture data acquired through the gamma detection process are different, and further, the picture compensation parameters obtained based on the acquired picture data are also different, so that whether the display screen to be detected needs to be subjected to picture compensation or does not need to be subjected to picture compensation can be determined according to the obtained picture compensation parameters. If the display screen needs to be subjected to picture compensation according to the picture compensation parameters, executing step 204; if it is determined that the display screen does not need to be picture compensated based on the picture compensation parameters, step 206 is performed.
In the embodiment of the invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed. The automatic gamma process and the gamma detection process are suitable for display screens which need to be subjected to picture compensation and are also suitable for display screens which do not need to be subjected to picture compensation.
As for the specific process of the gamma detection process, reference can be made to the related art.
And 204, when the display screen needs to perform picture compensation, starting a picture compensation function of the display screen, and burning picture compensation parameters to a specified position of the display screen. Step 205 is performed.
After the gamma detection process is performed on the display screen, when the display screen needs to perform picture compensation, the picture compensation function of the display screen is started, and the picture compensation parameters determined in the step 203 are burned to the specified position of the display screen. Wherein, the display screen is provided with an Integrated Circuit (IC) module, and the IC module is provided with a One Time Programming (OTP) sub-module, and correspondingly, the picture compensation function of the display screen is started, which may include:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule. After the compensation indication information is written into the OTP submodule, the picture compensation function of the display screen is started.
Further, the display screen still is provided with storage module, and is corresponding, burns the appointed position of picture compensation parameter burn to the display screen, can include:
and burning the picture compensation parameters into the storage module. For example, the storage module may be a flash memory (also referred to as a flash memory), and the picture compensation parameters burned into the flash memory are not lost due to power failure.
Illustratively, compensation indication information for indicating the picture compensation function of the display screen is written into an OTP sub-module of the IC module, and after the picture compensation parameters are burned into the flash memory, the screen of the display screen is lit, the compensation indication information in the OTP sub-module is automatically read when the screen of the display screen is lit, and then the picture compensation parameters in the flash memory are read, thereby achieving the effect of compensating the display picture of the display screen.
By performing step 204 and step 205, a picture compensation (Demura) process for a display screen requiring picture compensation is completed.
And step 206, forbidding starting the picture compensation function of the display screen when the display screen does not need picture compensation.
After determining the picture compensation parameters of the display screen through the gamma detection process, when the display screen does not need picture compensation, the picture compensation function of the display screen is forbidden to be started. Since the picture compensation function of the display screen is turned off in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen only needs to be kept turned off at this time.
Further, before the display screen is shipped, the screen of the display screen can be lighted, and the current light display parameters of the display screen can be checked, and the process can refer to the related technology.
And step 207, checking the current light display parameters of the lighted display screen through a product inspection process.
Before the display is shipped, the current light display parameters of the display lit in step 205 are checked by a product Inspection (Inspection) process. For example, the light display parameters may include chromaticity, color temperature, hue, and the like.
With regard to the product inspection process, reference can be made to the related art.
In the related art, for a display screen requiring compensation, compensation indication information for indicating a picture compensation function of the display screen is written in an IC module in an automatic gamma process, and the display screen requiring compensation and the display screen not requiring compensation must be distinguished, that is, one set of process flow must be adopted to detect the display screen requiring compensation while another set of process flow is adopted to detect the display screen not requiring compensation. Each process included in each set of process flow corresponds to different codes, the detection efficiency is low, manpower and material resources are wasted, and the detection cost is high. In the method for detecting the display screen provided by the embodiment of the invention, the picture compensation function of the display screen is closed in the automatic gamma process and the gamma detection process, and after the gamma detection process is carried out, when the display screen needs to be subjected to picture compensation, the picture compensation process is carried out on the display screen, so that the display screen needing compensation and the display screen not needing compensation do not need to be distinguished, one set of process flow does not need to be adopted to detect the display screen needing compensation, and the other set of process flow does not need to be adopted to detect the display screen not needing compensation, so that the detection efficiency is greatly improved, the manpower and material resources are saved, and the detection cost is reduced. The method is suitable for external compensation technology and internal compensation technology in the related technology, and is suitable for various display devices, such as mobile phones, tablet computers, televisions, displays, notebook computers, digital photo frames, navigators and other products or components with display functions.
It should be noted that, the sequence of the steps of the detection method for the display screen provided by the embodiment of the present invention may be appropriately adjusted, and the steps may also be correspondingly increased or decreased according to the situation. Any method that can be easily conceived by those skilled in the art within the technical scope of the present disclosure is covered by the protection scope of the present invention, and thus, the detailed description thereof is omitted.
In summary, in the detection method for the display screen provided by the embodiment of the invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is turned off, when the display screen to be detected needs to be subjected to picture compensation, the picture compensation function of the display screen is turned on, the picture compensation parameters are burned to the specified position of the display screen, and then, the screen of the display screen is turned on, so that the display screen needing to be compensated and the display screen not needing to be compensated do not need to be independently detected, the detection efficiency is improved, and the detection cost is reduced.
An embodiment of the present invention provides a device 300 for detecting a display screen, as shown in fig. 3, the device 300 includes:
and the adjusting module 310 is used for adjusting the light display parameters of the display screen to be detected through an automatic gamma process.
The determining module 320 is configured to determine a picture compensation parameter of the display screen through a gamma detection process, wherein a picture compensation function of the display screen is turned off in the automatic gamma process and the gamma detection process.
The starting module 330 is configured to start a picture compensation function of the display screen when the display screen needs to perform picture compensation, and burn the picture compensation parameter to a specified position of the display screen.
And the lighting module 340 is configured to light up a screen of the display screen, so that the display screen obtains the picture compensation parameter in the designated position.
In summary, in the detection apparatus for a display screen provided in the embodiments of the present invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is turned off, when the display screen needs to perform picture compensation, the start module starts the picture compensation function of the display screen, and burns the picture compensation parameter to the specified position of the display screen, and then the light module lights the screen of the display screen, so that the display screen needs to be compensated and the display screen does not need to be compensated independently, thereby improving the detection efficiency and reducing the detection cost.
Wherein, the display screen is provided with the IC module, and the IC module is provided with the OTP submodule, and is corresponding, opens module 330 for:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule.
Further, as shown in fig. 4, the apparatus 300 may further include:
the processing module 350 is configured to prohibit starting the picture compensation function of the display screen when the display screen does not need to perform the picture compensation.
Optionally, the light display parameters include chromaticity, and accordingly, the adjusting module 310 is configured to:
and adjusting the chromaticity of the display screen to be target chromaticity by an automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
Wherein, the display screen is provided with storage module, correspondingly, opens module 330 for:
and burning the picture compensation parameters into the storage module.
The display screen includes a protective cover and a display panel, and further, as shown in fig. 4, the apparatus 300 may further include:
and the attaching module 360 is used for attaching the protective cover plate and the display panel to obtain the display screen.
Further, as shown in fig. 4, the apparatus 300 may further include:
and the checking module 370 is used for checking the current light display parameters of the lighted display screen through a product checking process.
Other reference meanings in fig. 4 can refer to fig. 3.
In summary, in the detection apparatus for a display screen provided in the embodiments of the present invention, in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is turned off, when the display screen needs to perform picture compensation, the start module starts the picture compensation function of the display screen, and burns the picture compensation parameter to the specified position of the display screen, and then the light module lights the screen of the display screen, so that the display screen needs to be compensated and the display screen does not need to be compensated independently, thereby improving the detection efficiency and reducing the detection cost.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (13)
1. A detection method of a display screen is characterized by comprising the following steps:
adjusting the light display parameters of the display screen to be detected through an automatic gamma process;
determining picture compensation parameters of the display screen through a gamma detection process, wherein in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed;
when the display screen needs to be subjected to picture compensation, starting a picture compensation function of the display screen, and burning the picture compensation parameters to a specified position of the display screen;
lightening a screen of the display screen to enable the display screen to acquire picture compensation parameters in the designated position;
and when the display screen does not need to carry out picture compensation, forbidding starting the picture compensation function of the display screen.
2. The method according to claim 1, characterized in that the display screen is provided with an Integrated Circuit (IC) module provided with a one-time-programmable (OTP) sub-module,
the starting of the picture compensation function of the display screen comprises the following steps:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule.
3. The method of claim 1, wherein the light display parameters comprise chromaticity, and wherein adjusting the light display parameters of the display to be detected by an automatic gamma process comprises:
and adjusting the chromaticity of the display screen to be target chromaticity through the automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
4. The method according to claim 1, wherein the display screen is provided with a storage module, and the burning of the picture compensation parameters to the designated position of the display screen comprises:
and burning the picture compensation parameters to the storage module.
5. The method of claim 1, wherein the display screen comprises a protective cover plate and a display panel, and before the adjusting the light display parameters of the display screen to be tested by the automatic gamma process, the method further comprises:
and attaching the protective cover plate and the display panel to obtain the display screen.
6. The method of claim 1, wherein after said illuminating the screen of the display screen, the method further comprises:
and checking the current optical display parameters of the lighted display screen through a product inspection process.
7. The method of claim 1, wherein the light display parameters further comprise color temperature and hue.
8. A device for detecting a display screen, the device comprising:
the adjusting module is used for adjusting the optical display parameters of the display screen to be detected through an automatic gamma process;
the determining module is used for determining picture compensation parameters of the display screen through a gamma detection process, and in the automatic gamma process and the gamma detection process, the picture compensation function of the display screen is closed;
the starting module is used for starting the picture compensation function of the display screen when the display screen needs to carry out picture compensation, and burning the picture compensation parameters to the specified position of the display screen;
the lighting module is used for lighting a screen of the display screen so that the display screen obtains the picture compensation parameters in the appointed position;
and the processing module is used for forbidding starting the picture compensation function of the display screen when the display screen does not need picture compensation.
9. The device of claim 8, wherein the display screen is provided with an Integrated Circuit (IC) module, the IC module is provided with a one-time programmable (OTP) sub-module,
the opening module is used for:
and writing compensation indication information for indicating the picture compensation function of the display screen into the OTP submodule.
10. The apparatus of claim 8, wherein the light display parameters comprise chromaticity, and wherein the adjustment module is configured to:
and adjusting the chromaticity of the display screen to be target chromaticity through the automatic gamma process, wherein the target chromaticity belongs to a preset chromaticity range.
11. The device of claim 8, wherein the display screen is provided with a storage module, and the activation module is configured to:
and burning the picture compensation parameters to the storage module.
12. The apparatus of claim 8, wherein the display screen comprises a protective cover and a display panel, the apparatus further comprising:
and the laminating module is used for laminating the protective cover plate and the display panel to obtain the display screen.
13. The apparatus of claim 8, further comprising:
and the inspection module is used for inspecting the current optical display parameters of the lighted display screen through a product inspection process.
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| CN109215578B (en) * | 2018-10-31 | 2020-06-19 | 北京小米移动软件有限公司 | Screen display method and device |
| CN109784268A (en) * | 2019-01-10 | 2019-05-21 | 京东方科技集团股份有限公司 | Unlocked by fingerprint method and unlocked by fingerprint device, display device |
| CN110636364B (en) * | 2019-09-24 | 2022-08-30 | 深圳创维－Rgb电子有限公司 | Image quality processing method, smart television and storage medium |
| CN111968559B (en) * | 2020-07-24 | 2023-03-10 | 昆山国显光电有限公司 | Burning method of display panel, display device and working method of display device |
| CN111986602B (en) * | 2020-07-24 | 2023-04-07 | 昆山国显光电有限公司 | Burning method of display panel and display device |
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| CN108172150A (en) | 2018-06-15 |
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