CN114268754A - Method for writing Flicker debugging value of Tconless liquid crystal television - Google Patents
Method for writing Flicker debugging value of Tconless liquid crystal television Download PDFInfo
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- CN114268754A CN114268754A CN202111587161.1A CN202111587161A CN114268754A CN 114268754 A CN114268754 A CN 114268754A CN 202111587161 A CN202111587161 A CN 202111587161A CN 114268754 A CN114268754 A CN 114268754A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 31
- 238000005192 partition Methods 0.000 claims abstract description 35
- 238000003860 storage Methods 0.000 claims description 10
- 238000011112 process operation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention relates to the field of liquid crystal televisions, and discloses a method for writing a Flicker debugging value of a Tconless liquid crystal television. The method comprises the following steps: an address register is fixed by using an unerasable partition in the hardware of the television core and is used for storing a VCOM value generated after the Flicker debugging of the whole television is qualified, and then the VCOM value stored in the core is written into a TCON drive IC without NVM in the starting process of the whole television. The invention solves the problem that the TCON drive IC without NVM can not store the Flicker debugging value of the production line, reduces the online debugging result of the LCD TV product and improves the subjective effect of the LCD TV.
Description
Technical Field
The invention relates to the field of liquid crystal televisions, in particular to a method for writing a Flicker debugging value of a Tconless liquid crystal television.
Background
In the industry of liquid crystal display televisions, with the popularization of the Tconless technology, more and more liquid crystal display factories externally put TCON boards, and the TCON boards are self-researched and produced by a whole television factory. The liquid crystal television with the TCON module manufactured by the whole factory is called as a tconless liquid crystal television. The dedicated ICs used in the self-made TCON module generally include PMIC, pgmma, Levelshifter, etc., and are collectively referred to as TCON driver ICs. The TCON driver IC is divided into a Non-Volatile Memory (NVM) and a Non-NVM. The driver IC with NVM can implement the requirements of storing and reading and writing the required program. TCON driver ICs without NVM can only operate by writing a program in real time upon each power up. For safety reasons, the program written into the IC in real time is generally set and then placed into the fixed partition without any change.
In recent years, television manufacturers have gradually selected driver ICs without NVM due to market conditions of insufficient supply of TCON driver ICs and optimization of BOM (material) cost. However, due to the use of such an IC, the VCOM (common voltage) value after online Flicker (flash) debugging on a production line cannot be stored in the driver IC, the temporary memory value disappears when power is off, and the next startup is restored to the value before debugging, so that the best design cannot be realized on the subjective image quality of the whole factory.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a method for writing a Flicker debugging value of a Tconless liquid crystal television is provided, aiming at a TCON drive IC without NVM, the VCOM value after online Flicker debugging can be written into the drive IC again.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the method for writing the Flicker debugging value of the Tconless liquid crystal television comprises the following steps:
an address register is fixed by using an unerasable partition in the hardware of the television core and is used for storing a VCOM value generated after the Flicker debugging of the whole television is qualified, and then the VCOM value stored in the core is written into a TCON drive IC without NVM in the starting process of the whole television.
As a further optimization, the method for fixing an address register by using the non-erasable partition in the hardware of the television core comprises the following steps:
in the hardware partition of the main board of the television core, an independent program partition is divided, the independent program partition is not erasable, and a fixed register address is assigned under the partition.
As a further optimization, the method further comprises:
setting two register information in liquid crystal display parameter of main software of a core main board, wherein the register information comprises a device address and a register address stored by VCOM; the device address is a VCOM value storage position in a core hardware partition, and the register address is a VCOM value storage position in a TCON drive IC;
for the TCON driver IC without NVM, there are two register specific information sets for the core hardware partition and the TCON driver IC, and for the TCON driver IC with NVM, the core hardware partition register information is set to a default value.
As a further optimization, the method for storing the VCOM value generated after the Flicker debugging of the whole machine is qualified comprises the following steps:
s1, carrying out Flicker online debugging by a main software starting program of the movement;
s2, reading address information of two VCOM registers set in current liquid crystal display parameter by main software of a machine core mainboard;
s3, judging the storage position of the debugged VCOM value through the device address:
if the address of the device is identified to be a default value, writing the debugged VCOM value into the specified position of the TCON drive IC, and storing;
and if the device address is identified as the core hardware partition, writing the debugged VCOM value into the specified address register of the core hardware partition and storing the VCOM value.
As a further optimization, the writing of the VCOM value stored in the core into the TCON driver IC without NVM by using the whole power-on process specifically includes:
a. after a main board of the machine core is electrified and before backlight is lightened, main software can carry out first conventional programming operation, basic programs are written into a TCON drive IC by detecting screen parameter information of a liquid crystal module, and a liquid crystal screen displays normally;
b. and (3) performing second programming operation after the machine core main board system is started:
reading register address information stored by two VCOMs in the parameter of the liquid crystal display, and if the first register information is identified as a default value, stopping the write process operation;
if the address of the first register device is identified as the core hardware partition, further reading the VCOM assigned address register value, if the register value is a default value, stopping the write operation, and if the register value is a non-default value, writing the value into the assigned register position of the TCON drive IC.
As a further optimization, the first write operation to the TCON driver IC occurs in a boot phase before the backlight is turned on, and the second write operation occurs in a kernel phase after the system is started.
As a further optimization, the write command data format of the VCOM value adopts an IIC or SPI format.
The invention has the beneficial effects that:
the method has the advantages that the hardware partition of the main software is stored by the core board, the fixed address register is searched, the VCOM value after Flicker debugging of the production line is stored, and the VCOM value is written into the TCON drive IC by a secondary programming method, so that the problem that the TCON drive IC without the NVM cannot store the Flicker debugging value of the production line is solved, the online debugging result of the LCD TV product is restored, and the subjective effect of the LCD TV is improved.
Drawings
FIG. 1 is a schematic diagram of the VCOM value stored on the chip board in the present invention;
FIG. 2 is a schematic diagram of the contents to be set in the parameter information of the LCD panel according to the present invention;
FIG. 3 is a flow chart of the Flicker debug VCOM value saving in the present invention;
FIG. 4 is a flow chart of VCOM value writing after Flicker debugging in the present invention.
Detailed Description
The invention aims to provide a method for writing a Flicker debugging value of a Tconless liquid crystal television, aiming at a TCON drive IC without NVM (non-volatile memory), and realizing that a VCOM value after Flicker is debugged online can be written into the drive IC again. The core idea is as follows: and fixing a register in the non-erasable part of the hardware partition of the main chip of the liquid crystal television, wherein the register is used for storing the VCOM value after the Flicker debugging of the production line is finished. After the core board is electrified to write the TCON drive IC, the VCOM register value in the partition is written into the corresponding TCON drive IC through the bus, the method solves the problem that the debugging value cannot be stored without an NVM drive chip in the TCON module, reduces the BOM cost of the whole machine and improves the subjective performance of the whole machine.
Example (b):
the method for writing the Flicker debugging value of the Tconless liquid crystal television in the embodiment comprises the following steps:
an address register is fixed by using an erasable partition in the hardware of the television core and is used for storing a VCOM value generated after the Flicker debugging of the whole television is qualified. And writing the VCOM value stored in the core into the TCON drive IC without NVM by using the starting-up process of the whole machine.
In a specific implementation, the method comprises the following operations:
first, as shown in fig. 1, an independent program partition is divided into hardware partitions of a core motherboard, and the partitions are non-erasable. The partition is assigned a fixed register address below for storing the VCOM value.
Secondly, two register information are added to the liquid crystal screen parameter of the main software of the machine core mainboard, as shown in fig. 2. The register information includes a device address and a register address for VCOM storage. The first is the VCOM value storage location within the core hardware partition, and the second is the VCOM storage location within the TCON driver IC.
For the TCON driver IC without NVM, two register specific information of the core hardware partition and the TCON driver IC will be set, and for the TCON driver IC with NVM, the core hardware partition register information is set to the default value (00 or FF).
Then, when the movement is powered on, the main software will perform the following steps, as shown in fig. 4:
a1, a main board of a machine core is electrified for the first time, before backlight is lightened in a boot stage, main software can carry out the first conventional programming operation, basic programs are written into a TCON drive IC by detecting screen parameter information of a liquid crystal module, and a liquid crystal screen displays normally;
a2, performing a second write operation in a Kernel stage after the core mainboard system is started, reading register address information stored by two VCOMs in liquid crystal display parameter, and if the first register information is identified to be 00 or FF, stopping the write operation.
A3, if the first register device address has core hardware partition identified, further reading VCOM assigned address register value. If the whole machine does not carry out Flicker debugging at this time, the register value is a default value (00 or FF), and the write process is stopped. If the whole machine is debugged by Flicker, the register value is a non-default value, and at the moment, the value is written into the TCON drive IC.
In the above process, the method specifically includes the following steps for the non-default value in the register from the result of Flicker online debugging and saving:
a. a main software starting program of the movement is used for carrying out Flicker online debugging;
b. the method comprises the following steps that main software of a machine core main board reads address information of two VCOM registers set in current liquid crystal display parameter;
c. judging the storage position of the debugged VCOM value through the device address:
if the first register information is identified to be 00 or FF, writing the debugged VCOM value into the specified position of the TCON drive IC, and storing;
and if the first register information is identified as the core hardware partition, writing the debugged VCOM value into the specified address register of the core hardware partition and storing the VCOM value.
Specifically, in the present embodiment, the VCOM value writing register command adopts the IIC or SPI data format.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure.
Claims (7)
- A method for writing a Flicker debugging value of a Tconless liquid crystal television is characterized by comprising the following steps:an address register is fixed by using an unerasable partition in the hardware of the television core and is used for storing a VCOM value generated after the Flicker debugging of the whole television is qualified, and then the VCOM value stored in the core is written into a TCON drive IC without NVM in the starting process of the whole television.
- 2. The method for writing Flicker value of Tconless LCD TV set as claimed in claim 1, wherein,the method for fixing the address register by using the non-erasable partition in the hardware of the television core comprises the following steps:in the hardware partition of the main board of the television core, an independent program partition is divided, the independent program partition is not erasable, and a fixed register address is assigned under the partition.
- 3. The method for writing Flicker value of Tconless LCD TV set as claimed in claim 1, wherein,the method further comprises the following steps:setting two register information in liquid crystal display parameter of main software of a core main board, wherein the register information comprises a device address and a register address stored by VCOM; the device address is a VCOM value storage position in a core hardware partition, and the register address is a VCOM value storage position in a TCON drive IC;for the TCON driver IC without NVM, there are two register specific information sets for the core hardware partition and the TCON driver IC, and for the TCON driver IC with NVM, the core hardware partition register information is set to a default value.
- 4. The method for writing Flicker value of Tconless LCD TV as claimed in claim 3, wherein,the method for storing the VCOM value generated after the Flicker debugging of the whole machine is qualified comprises the following steps:s1, carrying out Flicker online debugging by a main software starting program of the movement;s2, reading address information of two VCOM registers set in current liquid crystal display parameter by main software of a machine core mainboard;s3, judging the storage position of the debugged VCOM value through the device address:if the address of the device is identified to be a default value, writing the debugged VCOM value into the specified position of the TCON drive IC, and storing;and if the device address is identified as the core hardware partition, writing the debugged VCOM value into the specified address register of the core hardware partition and storing the VCOM value.
- 5. The method for writing Flicker value of Tconless LCD TV as claimed in claim 4, wherein,the writing of the VCOM value stored in the core into the TCON drive IC without the NVM by utilizing the starting-up process of the whole machine specifically comprises the following steps:a. after a main board of the machine core is electrified and before backlight is lightened, main software can carry out first conventional programming operation, basic programs are written into a TCON drive IC by detecting screen parameter information of a liquid crystal module, and a liquid crystal screen displays normally;b. and (3) performing second programming operation after the machine core main board system is started:reading register address information stored by two VCOMs in the parameter of the liquid crystal display, and if the first register information is identified as a default value, stopping the write process operation;if the address of the first register device is identified as the core hardware partition, further reading the VCOM assigned address register value, if the register value is a default value, stopping the write operation, and if the register value is a non-default value, writing the value into the assigned register position of the TCON drive IC.
- 6. The method for writing the Flicker debugging value of the Tconless lcd-tv set according to any one of claims 1 to 5, wherein the first writing operation on the TCON driver IC occurs in a boot phase before the backlight is turned on, and the second writing operation occurs in a kernel phase after the system is started.
- 7. The method for writing the Flicker debugging value of the Tconless lcd-tv set according to any one of claims 1 to 5, wherein the data format of the write command for the VCOM value is IIC or SPI format.
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| CN202111587161.1A CN114268754B (en) | 2021-12-23 | 2021-12-23 | Writing method of Flicker debugging value of Tconless liquid crystal display television |
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| CN202111587161.1A CN114268754B (en) | 2021-12-23 | 2021-12-23 | Writing method of Flicker debugging value of Tconless liquid crystal display television |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137088A (en) * | 2011-11-22 | 2013-06-05 | 乐金显示有限公司 | Circuit for driving liquid crystal display device |
| JP2015025837A (en) * | 2013-07-24 | 2015-02-05 | シナプティクス・ディスプレイ・デバイス株式会社 | Display control device and semiconductor integrated circuit |
| CN104464664A (en) * | 2014-11-21 | 2015-03-25 | 深圳市立德通讯器材有限公司 | Method for automatically correcting liquid crystal display screen Flicker |
| CN105681700A (en) * | 2016-01-28 | 2016-06-15 | 四川长虹电器股份有限公司 | Flicker debugging method and device for liquid crystal display television |
| CN109192155A (en) * | 2018-09-11 | 2019-01-11 | 四川长虹电器股份有限公司 | The method that Tconless LCD TV carries out screen flicker debugging automatically |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570426B (en) * | 2015-02-10 | 2017-11-14 | 武汉精测电子技术股份有限公司 | The VCOM data recording methods of calibration of liquid crystal module |
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- 2021-12-23 CN CN202111587161.1A patent/CN114268754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137088A (en) * | 2011-11-22 | 2013-06-05 | 乐金显示有限公司 | Circuit for driving liquid crystal display device |
| JP2015025837A (en) * | 2013-07-24 | 2015-02-05 | シナプティクス・ディスプレイ・デバイス株式会社 | Display control device and semiconductor integrated circuit |
| CN104464664A (en) * | 2014-11-21 | 2015-03-25 | 深圳市立德通讯器材有限公司 | Method for automatically correcting liquid crystal display screen Flicker |
| CN105681700A (en) * | 2016-01-28 | 2016-06-15 | 四川长虹电器股份有限公司 | Flicker debugging method and device for liquid crystal display television |
| CN109192155A (en) * | 2018-09-11 | 2019-01-11 | 四川长虹电器股份有限公司 | The method that Tconless LCD TV carries out screen flicker debugging automatically |
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