CN107452306B - Tool jig for detecting display panel and detection method thereof - Google Patents
Tool jig for detecting display panel and detection method thereof Download PDFInfo
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- CN107452306B CN107452306B CN201710707665.XA CN201710707665A CN107452306B CN 107452306 B CN107452306 B CN 107452306B CN 201710707665 A CN201710707665 A CN 201710707665A CN 107452306 B CN107452306 B CN 107452306B
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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 tool fixture for detecting a display panel and a detection method thereof.A reading module of the tool fixture is used for reading picture information which needs to be output when the tool fixture detects the display panel; the control module is used for generating a corresponding data signal for driving the display panel to be detected to display according to the picture information and outputting the data signal to the distribution module; the distribution module is used for distributing the data signals to at least one display panel to be detected for display. Therefore, the tool fixture can generate a data signal for detecting the display panel according to the read picture information, namely, a detection picture can be generated automatically, and signal generation resources do not need to be occupied compared with the prior art; and the data signals are distributed to the display panels to be detected through the distribution module so as to drive the display panels to display, and the quality detection of the display panels before leaving the factory is completed, so that the simultaneous detection of a plurality of display panels can be realized, and the detection efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a tool jig for detecting a display panel and a detection method thereof.
Background
At present, display technologies are widely applied to televisions, mobile phones, and public information displays, and flat panel displays for displaying pictures are widely popularized due to their advantages of being ultra-thin and energy-saving.
However, the quality of the display panel needs to be tested before the display panel leaves the factory, and the testing environment of some military display panels is more severe and the testing time is longer. As shown in fig. 1, a detection fixture in the prior art includes: a signal generator and a drive plate; the detection jig is used for one-to-one detection, has low detection efficiency and needs manual control of detection time. Therefore, when the detection jig is used for quality detection of the display panel before delivery, the detection jig needs to occupy resources of the signal generator for a long time and needs to artificially control detection time, so that the detection efficiency is low and human resources are occupied.
Therefore, how to improve the quality detection efficiency of the display panel before shipment and save the detection resources is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a tool fixture for detecting a display panel and a detection method thereof, which are used for improving the quality detection efficiency of the display panel before leaving a factory and saving detection resources.
The embodiment of the invention provides a tool jig for detecting a display panel, which comprises: the device comprises a reading module, a control module and a distribution module; wherein the content of the first and second substances,
the reading module is used for reading the picture information which needs to be output when the tool fixture detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
the control module is used for generating a corresponding data signal for driving the display panel to be detected to display according to the picture information and outputting the data signal to the distribution module;
the distribution module is used for distributing the data signals to at least one display panel to be detected for display.
In a possible implementation manner, the tool fixture provided in an embodiment of the present invention further includes: a timing module;
the timing module is used for setting detection time and sending out voice prompt when the set detection time is over.
In a possible implementation manner, the tool fixture provided in an embodiment of the present invention further includes: a display module;
the display module is used for displaying the picture information read by the reading module and the detection time set by the timing module.
In a possible implementation manner, the tool fixture provided in an embodiment of the present invention further includes: a storage module;
the storage module is used for storing the picture information which needs to be output when the tool jig detects the display panel.
In a possible implementation manner, the tool fixture provided in an embodiment of the present invention further includes: a key module;
the key module is used for modifying the picture information required to be output and the set detection time when the tool jig detects the display panel.
In a possible implementation manner, in the tool fixture provided in the embodiment of the present invention, the reading module, the control module, and the distributing module are integrated on a main control board; the key module is connected with the main control panel through a wire.
The embodiment of the invention provides a detection method of the tool jig, which comprises the following steps:
reading picture information which needs to be output when the tool jig detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
generating a corresponding data signal for driving the display panel to be detected to display according to the picture information;
and distributing the data signals to at least one display panel to be detected for display.
In a possible implementation manner, the detection method provided in an embodiment of the present invention further includes:
setting detection time, and sending out voice prompt when the set detection time is over.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a tool jig for detecting a display panel and a detection method thereof, wherein the tool jig comprises: the device comprises a reading module, a control module and a distribution module; the reading module is used for reading picture information which needs to be output when the tool fixture detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label; the control module is used for generating a corresponding data signal for driving the display panel to be detected to display according to the picture information and outputting the data signal to the distribution module; the distribution module is used for distributing the data signals to at least one display panel to be detected for display. Therefore, the tool fixture can generate a data signal for detecting the display panel according to the read picture information, namely, a detection picture can be generated automatically, and signal generation resources do not need to be occupied compared with the prior art; and the data signals are distributed to the display panels to be detected through the distribution module so as to drive the display panels to display, and the quality detection of the display panels before leaving the factory is completed, so that the simultaneous detection of a plurality of display panels can be realized, and the detection efficiency is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a tooling fixture for detecting a display panel in the prior art;
fig. 2 and fig. 3 are schematic structural diagrams of a tooling fixture for detecting a display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram of display information of a display module according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating the manner in which resolution pools are polled according to an embodiment of the invention;
fig. 6 is a flowchart of a detection method of a tooling fixture according to an embodiment of the present invention;
fig. 7a and 7b are schematic diagrams of a process of acquiring picture information and generating a corresponding data signal by the FPGA main control board according to the embodiment of the present invention.
Detailed Description
The following describes in detail specific embodiments of a tool fixture for detecting a display panel and a detection method thereof according to an embodiment of the present invention with reference to the accompanying drawings.
An embodiment of the present invention provides a tool fixture for detecting a display panel (for example, a liquid crystal display), as shown in fig. 2, including: the system comprises a reading module 01, a control module 02 and a distribution module 03; wherein the content of the first and second substances,
the reading module 01 is used for reading the picture information which needs to be output when the tool fixture detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
the control module 02 is configured to generate a corresponding data signal for driving the display panel to be detected to display according to the picture information and output the data signal to the distribution module 03;
the distribution module 03 is configured to distribute the data signal to at least one display panel to be detected for display.
The tool fixture provided by the embodiment of the invention can generate a data signal for detecting the display panel according to the read picture information, namely, can generate a detection picture by self, and does not need to occupy signal generation resources compared with the prior art; and the data signals are distributed to the display panels to be detected through the distribution module so as to drive the display panels to display, and the quality detection of the display panels before leaving the factory is completed, so that the simultaneous detection of a plurality of display panels can be realized, and the detection efficiency is greatly improved. In order to improve the detection efficiency and reduce the number of the test fixtures, one test fixture can simultaneously detect a plurality of display modules through the distribution module of the tool fixture. The data signals (including control signals and picture effective data signals, such as R, G, B values of three sub-pixels) generated by the control module are transmitted to the input end of the distribution module, are copied into multiple copies after being processed by the distribution module, and then are transmitted to the display panel to be tested.
In a specific implementation, as shown in fig. 3, the fixture according to the embodiment of the present invention further includes: a timing module 04; the timing module 04 is used for setting the detection time and sending out a voice prompt when the set detection time is over. Specifically, in the tooling fixture provided by the embodiment of the invention, the detection time can be set through the timing module, so that resources for manually controlling the detection time are saved, and the stability of detection is ensured. Meanwhile, the timing module can also send out voice prompt (for example, a prompt loudspeaker is arranged) in time when the timing detection is finished, so that the detection personnel is informed that the detection is finished, and the detection personnel can conveniently process subsequent work in time.
In a specific implementation, as shown in fig. 3, the fixture provided in the embodiment of the present invention may further include: a display module 05; the display module 05 is configured to display the screen information read by the reading module 01 and the detection time set by the timing module 04. Specifically, in the tool fixture provided in the embodiment of the present invention, a small display module (for example, a liquid crystal display module) may be mounted to display output information of the current tool fixture, and as shown in fig. 4, the display information includes four parts: 1024 × 768 (output resolution: 1024 × 768), checker (screen type: checkers), 4 × 4 (checkered screen of screen index: 4 × 4), timing: OFF (timed reminder function: 1H). In addition, because the environment that display panel detected is comparatively harsh, for the life of extension display module, can become a pluggable module with display module design, after the output picture of frock tool has set up (testing personnel has obtained the display information), can pull out this module manual outage.
In a specific implementation, as shown in fig. 3, the fixture provided in the embodiment of the present invention may further include: a storage module 06; the storage module 06 is used for storing the picture information to be output when the tool fixture detects the display panel. Specifically, the tool fixture provided in the embodiment of the present invention may be externally mounted with an Electrically Erasable Programmable Read Only Memory (EEPROM) as a storage module, and is configured to store information of an output screen of the tool fixture of the present invention.
In a specific implementation, as shown in fig. 3, the fixture provided in the embodiment of the present invention may further include: a key module 07; the key module 07 is used for modifying the picture information to be output and the set detection time when the tool fixture detects the display panel. Specifically, in the tool fixture provided in the embodiment of the present invention, as shown in fig. 3, the reading module 01, the control module 02, and the distribution module 04 may be integrated on a main control board of a Field Programmable Gate Array (FPGA); the key module 07 is connected with the FPGA main control board through a wire. Specifically, in order to enable the key to be operated conveniently and flexibly, the key and the FPGA are not arranged on the same circuit board when the key module is designed, and the key and the FPGA can be connected through a long wire. When the display panel to be tested, such as a liquid crystal display module and a tool fixture, are in a closed test box (special environment), the output picture of the tool fixture needs to be adjusted by midway detection personnel, the operation can be directly carried out through a key module placed outside the test box at the moment, and the condition in the test box does not need to be waited for to recover the normal state.
Specifically, in the tooling fixture provided in the embodiment of the present invention, the key module may be used to modify the related parameters in the picture information, for example, when the resolution of the display panel is modified by the key module, the right direction key and the OK key need to be pressed for a long time at the same time to be executed. The purpose of this design is to prevent the damage of display panel caused by the wrong operation of keys by the detection personnel. Because of the difference of the power supply voltage of the display panels with different resolutions, the design of two key length keys is carried out. The specific functions of each key in the key module are as follows:
right direction key: options for setting modifications (picture type, picture label, timing time);
up and down direction keys: used for modifying a specific value under a certain option;
an OK key: confirming the output;
right direction key + OK key long press: the set resolution can be modified;
the setting of the functions of the above keys is merely an example, and in actual application, the corresponding functions may be set in other manners according to actual needs, and is not limited herein.
In specific implementation, the resolution, the picture type and the picture mark number are already solidified inside the FPGA main control board, and a detector only needs to use the key for adjustment to check. The timing time can also be set by a key, and the timing function can also be closed. And when the timing function is started and the FPGA acquires the timing time, starting the timing function. After timing is finished, the FPGA starts voice reminding to inform detection personnel that the detection is finished. Through the timing function, the manual timing is not needed, and further the manual error is reduced. The keys can be adjusted according to the display information of the display module to further set the required detection picture.
In specific implementation, when a detection person detects, after output information can be adjusted through a key, the output is determined through an ok key, and meanwhile, the FPGA main control board maps current output picture information into a corresponding communication code to be stored in the EEPROM. The EEPROM stores only three bytes of data, and the associated passcodes are shown in tables 1 and 2:
TABLE 1
TABLE 2
Wherein, table 1 is the pass code of the first byte, and table 2 is the pass codes of the second and third bytes. Tables 1 and 2 only list the meanings represented by the stored data in the EEPROM, and the pass code also leaves enough margin when upgrading is needed subsequently (other resolutions or detection pictures need to be added). Due to the existence of the external memory module, relevant parameters are set through the key module, and the tool fixture can also be a special detection tool for a certain liquid crystal display module, and is not limited herein.
Specifically, in the tooling fixture provided by the embodiment of the present invention, the relevant parameter information of the display module is already cured in advance, and the parameter information is to be matched with the resolution (the first byte stored in the EEPROM). The FPGA main control board has two modes for acquiring the resolution information: obtaining the operation of the key or reading the value in the EEPROM. After the FPGA main control board acquires the resolution information, the FPGA can automatically call the parameters corresponding to the resolution. These parameters are mainly timing parameters of the display panel, including Total row number H _ Total, Total column number V _ Total, and row effective area H _ Size … …. The FPGA main control board generates a data enable signal DE, a line synchronizing signal HS and a field synchronizing signal VS control signal in a counting mode according to the acquired dimming parameters to drive the display panel to display.
In the tool fixture provided by the embodiment of the invention, the parameters of the display panel can be acquired by adopting a mode of polling a resolution pool, and the plurality of types of display panels can be matched without modifying and upgrading FPGA codes or receiving data of an external control processor. The manner of polling the resolution pool is shown in fig. 5, and may include:
1. the FPGA main control board obtains key operation or reads data in the EEPROM to obtain a pass code;
2. polling a resolution pool by the pass code, and finding a resolution code number consistent with the pass code (when a new resolution is added, the new resolution code number needs to be registered in the resolution pool to generate a new resolution code number);
3. according to the resolution code, the FPGA main control board maps the parameters of the corresponding display panel;
4. the FPGA main control board generates a control signal in a counting mode;
by adopting the operation mode of resolution polling, all resolutions need to be registered in a resolution polling pool firstly, the reliability of parameters is ensured, and the code maintenance is simpler; the parameters of the display panel are stored in a variable form, so that the resources of the memory are saved (only 1 part of the resources of the memory are consumed, and if the parameters are solidified in the FPGA in other modes, n parts of the resources of the memory are consumed).
In specific implementation, an effective picture cannot be displayed after DE, HS, and VS signals generated by the FPGA, and the FPGA needs to generate an effective data signal of the picture, that is, a value of R, G, B for each pixel point. After the FPGA operates or reads the information of the EEPROM through keys, the communication codes of the picture type and the picture label are acquired, and the picture information is generated under the control of DE, HS and VS. The picture types of the tool jig can be divided into four types: aging pictures, checkered pictures, gray-scale pictures and dynamic pictures. Wherein:
aging a picture: the five pictures of red, green, blue, white and black are displayed circularly, each picture displays 3S, and the method can be directly realized by assigning values to R, G, B subpixels;
grid picture: the grid pictures mainly comprise three pictures, namely 4 × 4, 8 × 8 and 16 × 16, which are black and white grid pictures, and DE and HS signals need to be counted when the grid pictures are displayed; example (c): when the liquid crystal screen module with the resolution of 1024 × 768 displays a 4 × 4 grid picture, the DE is counted: since 1024 ═ 256 × 4, DE needs to modify R, G, B the values of the three subpixels every time DE counts to a multiple of 256; counting the HS: since 768 × 192, the values of R, G, B three subpixels also need to be adjusted every time HS counts to a multiple of 192;
gray scale picture: the gray-scale picture has 7 pictures of 0, 8, 16, 32, 64, 128 and 256, and can be directly realized by assigning values to R, G, B subpixels;
dynamic picture: the tool fixture provided by the invention has three dynamic pictures in total, the display of the dynamic pictures is complex, the character information or the picture information of the dynamic pictures needs to be prestored in the memory, and then the DE signals and the HS signals are counted to generate address information so as to display the dynamic pictures.
The above four picture types are only examples, and in the specific implementation, the corresponding picture types may be set according to actual needs, which is not described in detail herein.
Based on the same inventive concept, an embodiment of the present invention provides a method for detecting the tool fixture, which, as shown in fig. 6, may include:
s101, reading picture information needing to be output when the tool jig detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
s102, generating a corresponding data signal for driving a display panel to be detected to display according to the picture information;
and S103, distributing the data signals to at least one display panel to be detected for display.
In specific implementation, the detection method provided in the embodiment of the present invention may further include: setting detection time, and sending out voice prompt when the set detection time is over.
Specifically, in the detection method provided in the embodiment of the present invention, after the tool fixture is powered on, configuration information of the external memory is first read, where the configuration information is picture information (including screen resolution, picture type, and picture label) that the tool fixture needs to output. If the output information of the tool fixture needs to be modified by a detection person, the output information can be directly modified through the key module, and after modification confirmation, the current picture can be output and the modified information can be stored in an external memory for use when the tool fixture is started next time. The content that the key can modify includes: resolution, picture type, picture index, timing time. After the information set by the keys is read, corresponding parameters are matched, control signals and picture signal data are generated according to the parameter information and are transmitted to the display module to be detected through the signal distribution module. And after the set timing time is over, voice reminding is started to inform the detection personnel that the detection is over.
The following two specific embodiments are used to describe a specific process of reading frame information and generating corresponding frame data of the fixture according to the embodiment of the present invention, and the specific process is as follows:
the first embodiment is as follows: the process of generating a corresponding data signal for the FPGA main control board to read the picture information of the external memory, as shown in fig. 7a, may include:
s201, reading data stored in an EEPROM;
s202, judging whether the read data is 0, if so, executing a step S203, otherwise, executing a step S204;
s203, analyzing the read data and displaying picture information corresponding to the analyzed data through a display module (a liquid crystal display module mounted on a tool fixture);
s204, waiting for key operation;
s205, mapping parameters of the display panel to be detected according to the picture information corresponding to the analyzed data;
and S206, generating and outputting a control signal and a data signal corresponding to the parameter of the display panel to be detected.
Example two: the process of generating corresponding data signals for the FPGA main control board to read the key operations, as shown in fig. 7b, may include:
s301, reading key operation;
s302, analyzing picture information corresponding to key operation and displaying the picture information through a display module (a liquid crystal display module mounted on a tool fixture);
s303, mapping parameters of the display panel to be detected according to the picture information;
s304, generating and outputting a control signal and a data signal corresponding to the parameter of the display panel to be detected;
s305, converting the picture information into a corresponding pass code and storing the pass code in an EEPROM.
The embodiment of the invention provides a tool jig for detecting a display panel and a detection method thereof, wherein the tool jig comprises: the device comprises a reading module, a control module and a distribution module; the reading module is used for reading picture information which needs to be output when the tool fixture detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label; the control module is used for generating a corresponding data signal for driving the display panel to be detected to display according to the picture information and outputting the data signal to the distribution module; the distribution module is used for distributing the data signals to at least one display panel to be detected for display. Therefore, the tool fixture can generate a data signal for detecting the display panel according to the read picture information, namely, a detection picture can be generated automatically, and signal generation resources do not need to be occupied compared with the prior art; and the data signals are distributed to the display panels to be detected through the distribution module so as to drive the display panels to display, and the quality detection of the display panels before leaving the factory is completed, so that the simultaneous detection of a plurality of display panels can be realized, and the detection efficiency is greatly improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a frock tool for detecting display panel which characterized in that includes: the device comprises a reading module, a control module, a distribution module and a key module; wherein the content of the first and second substances,
the reading module is used for reading the picture information which needs to be output when the tool fixture detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
the control module is used for determining parameters of a corresponding display panel in a resolution polling pool according to the screen resolution in the picture information, generating a corresponding data signal for driving the display panel to be detected to display according to the parameters of the display panel, the picture type and the picture label in the picture information and outputting the data signal to the distribution module;
the distribution module is used for copying the data signals into a plurality of copies and distributing the copies to a plurality of display panels to be detected for display;
the key module is used for modifying the picture information required to be output and the set detection time when the tool fixture detects the display panel;
the reading module, the control module and the distribution module are integrated on a main control board; the key module is connected with the main control panel through a wire.
2. The tooling jig of claim 1, further comprising: a timing module;
the timing module is used for setting the detection time and sending out voice prompt when the set detection time is over.
3. The tooling jig of claim 2, further comprising: a display module;
the display module is used for displaying the picture information read by the reading module and the detection time set by the timing module.
4. The tooling jig of claim 3, further comprising: a storage module;
the storage module is used for storing the picture information which needs to be output when the tool jig detects the display panel.
5. The detection method of the tooling jig of any one of claims 1 to 4, comprising:
reading picture information which needs to be output when the tool jig detects the display panel; wherein the picture information includes: screen resolution, picture type and picture label;
generating a corresponding data signal for driving the display panel to be detected to display according to the picture information;
and copying the data signal into a plurality of copies and distributing the copies to a plurality of display panels to be detected for displaying.
6. The detection method of claim 5, further comprising:
setting detection time, and sending out voice prompt when the set detection time is over.
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| CN112967352A (en) * | 2021-03-09 | 2021-06-15 | 苏州佳智彩光电科技有限公司 | Multilayer logic picture generation method and device |
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| CN102253842A (en) * | 2010-05-18 | 2011-11-23 | 研祥智能科技股份有限公司 | Method for adjusting display screen under extensible firmware interface (EFI) platform, system and equipment |
| US20130100012A1 (en) * | 2011-10-21 | 2013-04-25 | Qualcomm Mems Technologies, Inc. | Display with dynamically adjustable display mode |
| CN205122151U (en) * | 2015-04-24 | 2016-03-30 | 苏州工业园区海的机电科技有限公司 | Novel test of multi -functional LCD module device |
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