CN117409689A

CN117409689A - Point screen testing device and method

Info

Publication number: CN117409689A
Application number: CN202310129989.5A
Authority: CN
Inventors: 李建伟; 李金燕
Original assignee: Shenzhen TCL Digital Technology Co Ltd
Current assignee: Shenzhen TCL Digital Technology Co Ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2024-01-16

Abstract

The invention provides a dot screen testing device and a dot screen testing method, wherein the device comprises the following steps: the main SOC module is used for outputting image signals in a standard format to the display screen; the image processing module is connected with the main SOC module and is used for carrying out format conversion on image signals output by the main SOC module so as to adapt to driving modes of different display screens; the output interface is connected with the image processing module and is connected with the display screen to output a dot screen signal to the display screen; the storage module is connected with the main SOC module and used for storing software programs and data to carry out iterative upgrade; and the power supply control module is connected with the main SOC module and is used for supplying power to the dot screen testing device. The invention adapts the driving modes of different display screens by using the correct parameters to lighten the display screens, and simultaneously supports the iterative upgrading function of software.

Description

Point screen testing device and method

Technical Field

The invention relates to the technical field of display screen testing, in particular to a dot screen testing device and method.

Background

In the field of display panel production, it is necessary to perform a dot screen test on a display panel, where the dot screen test is important for quality control of the display panel, and can detect whether the display panel has a defective dot, for example: bright spots or dark spots. Since TCONLESS scheme (TCONLESS scheme is to place TCON board inside SOC main chip and directly output P2P signal to display on display screen) becomes more and more normalized, there is often a problem that downstream manufacturers cannot turn on screen (including turning off screen), or the original TCON board must be used to turn on screen, so versatility is very poor. For large-scale factory production, this also hinders the progress of product development and the delivery of projects.

Disclosure of Invention

The invention provides a dot screen testing device and method, which are used for solving the problem that the display screen is inconvenient to test in the prior art.

In a first aspect, the present invention provides a device for testing a display screen, the device comprising:

the main SOC module is used for outputting image signals in a standard format to the display screen;

the image processing module is connected with the main SOC module and is used for carrying out format conversion on image signals output by the main SOC module so as to adapt to driving modes of different display screens;

the output interface is connected with the image processing module and is connected with the display screen to output a dot screen signal to the display screen;

the storage module is connected with the main SOC module and used for storing software programs and data to carry out iterative upgrade;

and the power supply control module is connected with the main SOC module and is used for supplying power to the dot screen testing device.

In an embodiment of the present invention, the device further includes an infrared signal receiving module, where the infrared signal receiving module is connected to the main SOC module and is configured to receive an external remote control signal.

In an embodiment of the present invention, the device further includes an LED indication control module, where the LED indication control module is connected to the main SOC module and is configured to display a working state of the spot screen testing device, where the working state includes a standby state, a power-on state, and a software upgrading state.

In an embodiment of the present invention, the device further includes a key control module, where the key control module is connected to the main SOC module, and is configured to control the dot screen testing device by using a key manner.

In an embodiment of the present invention, the device further includes a USB interface, where the USB interface provides a peripheral interface to perform online upgrade of software by inserting a USB disk.

In an embodiment of the present invention, the device further includes a WIFI interface, where the WIFI interface is used to connect to WIFI to perform OTA upgrading software through the internet.

In a second aspect, the present invention further provides a dot screen testing method based on the dot screen testing device in any one of the first aspects, where the method includes:

after the power control module is powered on for the first time, the main SOC module is controlled to directly enter an MBOOT mode to start a display screen;

the RGB monochromatic field test is realized on the display screen through the key control module or the infrared signal receiving module;

the method comprises the steps that a preset time is reserved by pressing a key for a long time so as to realize an RGB aging test mode on a display screen, and the time of RGB aging is set in a remote control mode;

different remote control passwords are sent to the infrared signal receiving module to adapt to driving modes of different display screens.

In an embodiment of the present invention, the method further includes:

and the USB upgrading of the software is realized through the USB interface, or the OTA upgrading of the software is realized through the WIFI interface.

In an embodiment of the present invention, the step of switching on the power control module to control the main SOC module to directly enter the MBOOT mode to start the display screen after the first power-on includes:

after the power control module is connected, starting a ROM boot of the main SOC module to initialize and detect hardware, and loading a RAM boot into a memory to run so as to detect software functions;

the kernel is loaded into memory and decompressed to boot the kernel.

In an embodiment of the present invention, the method further includes:

different hardware and software are loaded according to a unique identifier PID of the same movement to realize corresponding functions, and the method specifically comprises the steps of restarting the spot screen testing device by sending instruction information through a remote controller to obtain the corresponding unique identifier PID and setting the unique identifier PID.

According to the device and the method for testing the point screen, provided by the invention, the display screen is lightened by adopting the correct parameters to adapt to the driving modes of different display screens, so that whether the delivery of the screen is abnormal or not is rapidly screened, the timing aging function of the screen can be realized, the early failure risk of the screen is eliminated, the brand image is improved, and the iterative upgrading function of software is supported.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of a spot screen testing device provided by the invention;

FIG. 2 is a flow chart of a method of testing a dot screen provided by the invention;

fig. 3 is a flowchart of a method for activating a display screen according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein.

Because the interface format and the signal of the display screen are different, different TCON boards are required to control different display screens, therefore, when testing different display screens, different TCON boards need to be prepared in advance, especially when producing screens without TCON boards (such as TCONLESS screens), TCON boards need to be purchased in advance, and different TCON boards need to be purchased by different screens, so that the production cost is increased, the cost is increased, and the test is inconvenient.

In order to solve the problem that the display screen is inconvenient to test in the prior art, the invention provides a screen-pointing testing device and a screen-pointing testing method, which are used for rapidly screening whether the delivery of the screen is abnormal or not by using correct parameters to adapt to driving modes of different display screens so as to lighten the display screens, can realize a screen timing aging function, eliminate the early failure risk of the screen and improve the brand image, and also support the iterative upgrading function of software.

A dot screen test apparatus and method of the present invention is described below with reference to fig. 1-3.

Referring to fig. 1, fig. 1 is a block diagram of a dot screen testing device according to the present invention. The dot screen test device 10 comprises a main SOC (System on Chip) module 101, an image processing module 102, an output interface 103, a storage module 104, a power control module 105, an infrared signal receiving module 106, an LED indication control module 107 and a key control module 108.

The main SOC module 101 is used for outputting image signals in a standard format to a display screen and receiving instruction information sent by other modules. The main SOC module 101 may provide various control signals required by the current display panel's drive board, which in turn provides various voltages and control levels required by the display.

The image processing module 102 is connected with the main SOC module 101, and is used for performing format conversion on the image signals output by the main SOC module 101 to adapt to driving modes of different display screens.

The output interface 103 has the function of a screen socket, which is connected to the image processing module 102, and the output interface 103 is connected to the display screen through a connection line to output a screen-click signal to the display screen.

Such connection lines are, for example, flexible Flat Cables (FFC) lines or soft flat cables (Flexible Flat Cable).

Illustratively, a memory module 104 is coupled to the main SOC module 101 for storing software programs and data for iterative upgrades.

Illustratively, the power control module 105 is connected to the main SOC module 101, and is configured to supply power to the spot-screen testing apparatus 10, so as to control the working states of other modules. The power control module 105 is connected to an external power supply through a power interface 111.

Illustratively, an infrared signal receiving module 106 is coupled to the main SOC module 101 for receiving external remote control signals, such as remote control signals from an external remote control.

Illustratively, the LED indication control module 107 is connected to the main SOC module 101 for displaying the operating states of the spot-screen testing apparatus, including a standby state, a power-on state, and a software upgrade state.

Illustratively, a key control module 108 is connected to the main SOC module 101 for controlling the spot-screen testing apparatus 10 by means of keys.

In some embodiments of the present invention, the dot screen test apparatus 10 further includes a USB interface 109 and a WIFI interface 110. The USB interface 109 provides a peripheral interface for online upgrade of software by plugging in a USB disk, and the WIFI interface is used to connect to WIFI for OTA (Over-the-Air Technology) upgrade of software Over the internet.

In summary, according to the spot screen testing device provided by the invention, screens of different factories are switched and adapted by using different passwords, so that the universality is strong. And meanwhile, the detection of the RGB three-color cyclic aging screen is supported, so that the short-term screen failure screening function is realized. Moreover, by checking the bright and dark spots of the screen OC in a single color, whether the screen has bright and dark spots or not can be quickly screened. In addition, the invention also supports the functions of USB flash disk upgrade and OTA upgrade.

The dot screen test method provided by the invention is described below, and the dot screen test method described below and the dot screen test device described above can be correspondingly referred to each other.

Referring to fig. 2, fig. 2 is a flowchart of a method for testing a dot screen according to the present invention. A dot screen testing method based on the dot screen testing device comprises the following steps:

step 210, the power control module is turned on to control the main SOC module to directly enter the MBOOT mode after the first power-up to start the display screen.

The programs for starting the display screen comprise a MBOOT program (boot program) and a NAND main program, when the main SOC module writes the MBOOT program, STR (fast start) is used for keeping data and system running state information in a memory of the main SOC module, and after the system is started, corresponding data can be read from the memory without complex system detection so as To directly enable the system To enter a state before suspension, thus the starting speed can be improved. Therefore, the invention can realize the STR function for the first time, solve the problem of slow alternating current power-on and improve the detection efficiency.

And 220, realizing RGB monochromatic field testing on the display screen through a key control module or an infrared signal receiving module.

And 230, realizing an RGB aging test mode on the display screen by long-pressing a key for a preset time length, and setting the RGB aging time length in a remote control mode.

Step 240, sending different remote control passwords to the infrared signal receiving module to adapt to driving modes of different display screens.

The method for testing the dot screen further comprises the following steps:

Therefore, the invention supports RGB three-color circulation aging screen, has the function of screening short-term screen failure, can rapidly screen the screen with the function of bright and dark points through the bright and dark points of the monochromatic inspection screen OC, and uses passwords to switch and adapt to screens of different factories, thereby having strong universality. In addition, the invention also supports the functions of USB flash disk upgrade and OTA upgrade.

Referring to fig. 3, fig. 3 is a flowchart of a method for starting up a display screen according to an embodiment of the invention. In the step 110, the step of controlling the main SOC module to directly enter the MBOOT mode to start the display screen after the power-on control module is powered on for the first time includes:

and step 310, switching on a power supply control module, and starting a ROM boot of the main SOC module to initialize and detect hardware.

ROM boot runs on Nand or eMMC, and Nand is a Flash, so the Flash is called Nand Flash, and the Flash is erased, read and written by using electric signals. The eMMC is formed by encapsulation by Nand, and the memory chip conforming to the eMMC interface is called eMMC chip. The main task of the ROM boot is hardware initialization and detection. Note that the MBOOT boot program may be stored in the ROM.

The Kernel (Kernel) file and the system environment file may be image files stored in a ROM (Read-Only Memory). ROM is a non-volatile memory, and even if the ROM is in power failure, the information stored in ROM is not lost, so that the ROM is suitable for storing fixed programs and data.

In step 320, the rom boot loads the RAM boot into the memory for running to detect the software function.

RAM boot runs in memory, whose main task is platform-related functions, such as: initializing environmental change, upgrading, starting Logo display, starting screen time sequence and the like. The volatile nature of RAM can cause some data to be lost after power is turned off.

In step 330, the kernel is loaded into memory and decompressed to start the kernel.

Before the Kernel (Kernel) is started, the RAM boot may pass some information to the Kernel (Kernel) through the Kernel command tool cmdline. After the kernel is started, a user application program can be loaded, and can be written in C or C++, compiled into machine codes by a processor to form a process, and the process communicates with the kernel through a system call interface.

A Kernel (Kernel) is the core of an operating system for managing system resources, such as providing abstractions for the software layer and abstractions for hardware access. The abstraction at the software level may be, for example, operations and rights control for objects such as processes, file systems, synchronization, memory, network protocols, etc. The abstraction of hardware access may be, for example, access to hardware such as a disk, a display screen, a network interface card, etc.

In some embodiments of the present invention, the method for testing a dot screen further includes the following steps:

different hardware and software configurations are loaded according to a unique identifier PID of the same movement to realize corresponding functions, and the method specifically comprises the steps of restarting the spot screen testing device by sending instruction information through a remote controller to obtain the corresponding unique identifier PID and setting the unique identifier PID.

PID (Project ID) is a unique identifier of the TV software system of the same deck, which is closely related to items, functions, production, OTA, etc. System startup is the loading of different hardware and software configurations to present corresponding functionality according to the PID. The PID includes two parts, SID and HID.

Specifically, the user mode PID specifies:

the maximum value of SID is a first preset value (e.g., 100) and the maximum value of HID is a second preset value (e.g., 479).

Specifically, the user mode PID algorithm specifies:

PID＝(SID&0x7F)<<8)|(HID&0xFF)I(HID&0x100)<<7)。

for example, sid=100 (2 in system: 1100100), hid=479 (2 in system: 11101111), pid= 58591.

Specifically, SKD mode PID specifies:

the SID value range may be 234-252 and the hid value range may be 480-511.

Specifically, SKD mode PID algorithm:

PID＝(SID&OxFF<<8)+HID。

for example, sid=234 (2 scale 11101010), hid=480 (2 scale 111100000), pid= 60384.

Thus, in the SKD mode, SID is between 234 and 252, HID is between 480 and 511, and PID is between 60384 and 65023. And restarting the spot screen testing device by sending instruction information through the remote controller to acquire a corresponding unique identifier PID and setting the unique identifier PID so as to realize a corresponding function.

Illustratively, commands may be sent to the spot screen testing device via an external remote control to modify the PID, for example: pressing 062598+PID+MENU by the remote controller, waiting about 10 seconds, the point screen testing device will automatically restart, enter the corresponding PID, and then modify the PID by tcli command.

For example, the path to acquire the current PID is:

/tvos/bin/tcli tos.factory.get_project_id。

for example, the path for setting the PID is:

/tvos/bin/tcli tos.factory.set_project_id 257。

it should be noted that, the method for testing the dot screen provided by the embodiment of the present invention can realize the functions implemented by the embodiment of the apparatus and achieve the same technical effects, and the parts and beneficial effects that are the same as those of the embodiment of the apparatus in the present embodiment are not described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spot screen testing device for performing a spot screen test on a display screen, the device comprising:

2. The spot-screen testing apparatus of claim 1, further comprising an infrared signal receiving module connected to the main SOC module for receiving an external remote control signal.

3. The spot-screen testing device according to claim 1 or 2, further comprising an LED indication control module, wherein the LED indication control module is connected to the main SOC module and is configured to display an operating state of the spot-screen testing device, and the operating state includes a standby state, a power-on state, and a software upgrade state.

4. The spot-screen testing device of claim 3, further comprising a key control module coupled to the main SOC module for controlling the spot-screen testing device by way of a key.

5. The spot-screen testing apparatus of claim 1, further comprising a USB interface that provides a peripheral interface for online upgrade of software by plugging in a USB disk.

6. The spot-screen testing device of claim 1, further comprising a WIFI interface for externally connecting WIFI to perform OTA upgrade software via the internet.

7. A dot screen testing method based on the dot screen testing device according to any one of claims 1 to 6, comprising:

8. The spot-screen testing method of claim 7, further comprising:

9. The method of on-screen testing according to claim 7, wherein the step of turning on the power control module to control the main SOC module to directly enter MBOOT mode to start the display after the first power-up includes:

the kernel is loaded into memory and decompressed to boot the kernel.

10. The spot-screen testing method of claim 9, further comprising: