CN112233629B

CN112233629B - Debugging method and system for preventing panel from flickering

Info

Publication number: CN112233629B
Application number: CN202011094773.2A
Authority: CN
Inventors: 张先明
Original assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2022-04-01
Anticipated expiration: 2040-10-14
Also published as: CN112233629A

Abstract

The application discloses a debugging method and a debugging system for preventing a panel from flickering, wherein VCOM data is determined whether to be modified or not when PMIC codes and initial check codes are confirmed to be consistent with preset PMIC codes and preset initial check codes in a debugging jig, so that the technical problems of display image flickering and residual images caused by abnormal faults of closed codes are effectively solved.

Description

Debugging method and system for preventing panel from flickering

Technical Field

The present application relates to the field of display technologies, and in particular, to a debugging method and system for preventing a panel from flickering.

Background

With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) have advantages of high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display devices.

When a whole machine client uses the panel, in order to adjust Flicker to an optimal state, Flicker needs to be adjusted again when the whole machine is assembled. And part of panel manufacturers can adjust flickers to be delivered when leaving the factory.

In the production process, the debugging jig needs to read all PMIC initial codes (codes) inside the PMIC chip, synchronously adjust the common electrical extreme value (part of the common electrical extreme value needs to synchronously adjust the Gamma value (Gamma)), synchronize the finally adjusted VCOM value and the PMIC initial Code together, and burn the VCOM value and the PMIC initial Code into the adapter board memory (XB Flash), so that the whole debugging is completed.

In the debugging process, the problems of poor display effect, low reliability, low qualification rate and the like of the display panel are caused by abnormal Code combination caused by abnormal PMIC initial Code reading, particularly poor grounding or other interference.

Disclosure of Invention

The invention aims to provide a debugging method and a debugging system for preventing a panel from flickering, so as to solve the technical problems that a display picture flickers and an afterimage are caused by abnormal combined Code caused by abnormal PMIC initial Code acquisition of the conventional debugging jig.

In order to achieve the above object, the present invention provides a debugging method for preventing panel flicker, comprising the following steps:

s1 writing PMIC initial codes and initial check codes corresponding to the PMIC initial codes one by one in a PMIC chip, wherein the PMIC initial codes comprise initial VCOM data;

s2, acquiring PMIC initial codes and initial check codes from the PMIC chip, comparing the acquired PMIC initial codes and the initial check codes with preset PMIC codes and preset initial check codes, judging whether the acquired PMIC initial codes and the initial check codes are consistent with the preset PMIC codes and the preset initial check codes, if so, entering the next step, and if not, returning to the previous step and starting an alarm;

s3, judging whether the initial VCOM data in the PMIC initial code needs to be modified, if so, modifying the initial VCOM data and generating effective VCOM data, replacing the initial VCOM data with the effective VCOM data to generate a new PMIC code and a new check code, and if not, finishing debugging.

Further, the PMIC initial code, the initial check code, the preset PMIC code, and the preset initial check code are stored in a first storage unit; and an error interval of a normal VCOM data and a VCOM data is stored in a second memory cell.

Further, the step of determining whether the initial VCOM data in the PMIC initial code needs to be modified specifically includes:

judging whether initial VCOM data in the PMIC initial code is the standard VCOM data, if so, directly generating a new PMIC code and a new check code, wherein the new PMIC code and the new check code are consistent with the PMIC initial code and the initial check code, and if not, entering the next step;

and judging whether initial VCOM data in the PMIC initial code falls into an error interval of the VCOM data, if so, modifying the initial VCOM data and generating effective VCOM data, replacing the initial VCOM data with the effective VCOM data to generate a new PMIC code and a new check code, and if not, finishing debugging.

Further, after the step of determining whether the initial VCOM data in the PMIC initial code needs to be modified, the method further includes

S4 comparing the other data except VCOM data in the new PMIC code with other data except initial VCOM data in the PMIC initial code, if yes, writing the new PMIC code and the new check code into a transfer board memory, if no, returning to the initial step.

Further, the PMIC initial code further includes initial voltage data and initial over-current protection data; the new PMIC code also includes new voltage data and new over-current protection data.

Further, in the step of comparing at S4 whether the data other than the VCOM data in the new PMIC code is consistent with the data other than the initial VCOM data in the PMIC initial code,

and comparing whether the initial voltage data and the initial overcurrent protection data are consistent with the new voltage data and the new overcurrent protection data, if so, writing the new PMIC code and the new check code into a memorizer of an adapter plate, and if not, returning to the initial step.

To achieve the above object, the present invention further provides a debug system for preventing panel flicker, comprising:

a display;

a PMIC chip disposed in the display and including a PMIC initial code and an initial check code corresponding to the PMIC initial code one-to-one, the PMIC initial code including initial VCOM data; and

the debugging jig is electrically connected to the PMIC chip; the debugging jig comprises a memory, wherein the memory comprises a first memory unit which is used for storing the PMIC initial code, the initial check code, a preset PMIC code and a preset initial check code;

when the PMIC initial code and the initial check code are consistent with the preset PMIC code and the preset initial check code, modifying the initial VCOM data and generating effective VCOM data, and replacing the effective VCOM data with the initial VCOM data to generate a new PMIC code and a new check code.

The technical effect of the invention is to provide a debugging method and system for preventing panel flicker, which can effectively reduce the technical problems of display image flicker and residual image caused by abnormal failure of combined Code by determining whether VCOM data needs to be modified when PMIC Code and initial check Code are consistent with preset PMIC Code and preset initial check Code in a debugging tool.

Furthermore, the invention provides a debugging method and a debugging system for preventing the panel from flickering, which can also quickly and automatically adjust, simplify the operation, reduce the time spent, improve the productivity and are suitable for all factories producing the display.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a flowchart of the debugging method for preventing panel flicker provided in the embodiment of the present application.

Fig. 2 is a functional diagram of a debugging system for preventing panel flicker according to an embodiment of the present application.

The drawing figures are partially identified as follows:

100 a display; 200 debugging a jig;

101PMIC chip;

201 a processor; 202 memory.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The present embodiment provides a debugging method for preventing panel flicker, which provides a display panel with a PMIC chip and a debugging tool, wherein the debugging tool is connected to the display panel in a telecommunication manner.

As shown in fig. 1, the debugging method includes the following steps S1) -S4).

S1) writing PMIC initial codes and initial check codes corresponding to the PMIC initial codes one by one in a PMIC chip.

The PMIC code includes initial VCOM data, initial voltage data, and initial over-current protection data.

S2) a debugging jig acquires PMIC initial codes and initial check codes from the PMIC chip and compares the acquired PMIC initial codes and the initial check codes with preset PMIC codes and preset initial check codes; and judging whether the obtained PMIC code and the initial check code are consistent with the preset PMIC code and the preset initial check code, if so, directly entering the next step, and if not, returning to the previous step and starting an alarm.

The debugging jig comprises a processor and a memory, wherein the processor is provided with a CRC (cyclic redundancy check) module. Wherein the processor is electrically connected to the memory. The memory includes a first storage unit and a second storage unit. The first storage unit is used for storing the PMIC initial code, the initial check code, a preset PMIC code and a preset initial check code; the second memory cell is used for storing standard VCOM data and an error interval of the VCOM data. If VCOM data is within + -2.5 v- + -3.5 v of the standard VCOM data, the VCOM data is determined to fall within the error range of the VCOM data and proceed directly to the next step. Preferably, the error interval of the VCOM data in this embodiment is ± 3v of the standard VCOM data. And when VCOM data does not fall into the error interval of the VCOM data, returning to the step 1) and starting an alarm.

In this embodiment, whether the obtained PMIC code and the initial check code are consistent with the preset PMIC code and the preset initial check code is determined by the CRC check module.

Step S2) is mainly to ensure that the PMIC code and the initial check code obtained by the debugging fixture are normal, so as to prevent the disturbed data from interfering with the subsequent debugging, thereby causing the problems of flickering display images and image retention.

S3) judging whether the initial VCOM data in the PMIC initial code needs to be modified, if so, modifying the initial VCOM data and generating effective VCOM data, replacing the initial VCOM data with the effective VCOM data to generate a new PMIC code and a new check code, and if not, finishing debugging.

In this embodiment, step S3) specifically includes:

firstly, the processor judges whether the initial VCOM data in the PMIC initial code is the standard VCOM data, if so, a new PMIC code and a new check code are directly generated, the new PMIC code and the new check code are consistent with the PMIC initial code and the initial check code, and if not, the next step S4 is carried out.

Secondly, judging whether initial VCOM data in the PMIC initial codes fall into an error interval of the VCOM data through the processor, if so, modifying the initial VCOM data and generating effective VCOM data, replacing the initial VCOM data with the effective VCOM data to generate new PMIC codes and new check codes, and if not, entering step S5) to finish debugging.

Step S2) mainly solves the technical problem of easy automatic flicker of the display panel by modifying the initial VCOM data falling into the error interval of the VCOM data and generating valid VCOM data, and replacing the valid VCOM data with the initial VCOM data to generate a new PMIC code and a new check code.

S4) comparing whether other data except VCOM data in the new PMIC code is consistent with other data except initial VCOM data in the PMIC initial code, if so, writing the new PMIC code and the new check code into a transfer board memory, and if not, returning to the initial step and starting an alarm.

Specifically, the new PMIC code further includes valid VCOM data, new voltage data, and new over-current protection data. In step S4), the processor is mainly used to compare whether the initial voltage data and the initial overcurrent protection data are consistent with the new voltage data and the new overcurrent protection data, if yes, the new PMIC code and the new check code are burned into a patch panel memory, and if not, the initial step S1) is returned to and an alarm is started.

As shown in fig. 2, the present embodiment further provides a debugging system for preventing panel flicker, which includes a display 100 and a debugging tool 200, wherein the debugging tool 200 is electrically connected to the PMIC chip 101.

The PMIC chip 101 is disposed in the display 100, and includes a PMIC initial code and an initial check code corresponding to the PMIC initial code one to one, where the PMIC initial code includes initial VCOM data.

The debugging tool 200 includes a processor 201 and a memory 202, the processor 201 is electrically connected to the memory 202, and the processor 201 includes a CRC check module.

The memory 202 includes a first memory cell and a second memory cell, and the first memory cell is used for storing the PMIC initial code, the initial check code, the preset PMIC code and the preset initial check code. Comparing, by the CRC check module of the processor 201, that the PMIC initial code and the initial check code are consistent with the preset PMIC code and the preset initial check code. When the PMIC initial code and the initial check code are consistent with the preset PMIC code and the preset initial check code, modifying the initial VCOM data and generating effective VCOM data, and replacing the effective VCOM data with the initial VCOM data to generate a new PMIC code and a new check code.

The second memory cell is used for storing standard VCOM data and an error interval of the VCOM data.

When initial VCOM data in the PMIC initial code is the standard VCOM data, directly generating a new PMIC code and a new check code, wherein the new PMIC code and the new check code are consistent with the PMIC initial code and the initial check code; when initial VCOM data in the PMIC initial code falls within an error interval of the VCOM data, modifying the initial VCOM data and generating valid VCOM data, and replacing the valid VCOM data with the initial VCOM data to generate a new PMIC code and a new check code.

In this embodiment, the PMIC initial code further includes initial voltage data and initial over-current protection data; the new PMIC code also includes new voltage data and new over-current protection data. By comparing the initial voltage data and the initial overcurrent protection data with the new voltage data and the new overcurrent protection data in the processor 201. When the initial voltage data and the initial overcurrent protection data are consistent with the new voltage data and the new overcurrent protection data, writing the new PMIC code and the new check code into a patch panel memory.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above detailed description is given to a debugging method and system for preventing panel flicker provided by the embodiments of the present application, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A debugging method for preventing panel flicker is characterized by comprising the following steps:

s3, judging whether the initial VCOM data in the PMIC initial code needs to be modified, if so, modifying the initial VCOM data and generating effective VCOM data, replacing the initial VCOM data with the effective VCOM data to generate a new PMIC code and a new check code, and if not, finishing debugging;

the PMIC initial code, the initial check code, the preset PMIC code and the preset initial check code are stored in a first storage unit; and

storing a standard VCOM data and an error interval of the VCOM data in a second memory cell;

the step of determining whether initial VCOM data in the PMIC initial code needs to be modified comprises:

2. The debugging method according to claim 1,

after the step of determining whether the initial VCOM data in the PMIC initial code needs to be modified, the method further comprises

3. The debugging method according to claim 2,

the PMIC initial code further comprises initial voltage data and initial over-current protection data;

the new PMIC code also includes new voltage data and new over-current protection data.

4. The debugging method according to claim 3,

in the step of comparing at S4 whether the data other than the VCOM data in the new PMIC code is consistent with the data other than the initial VCOM data in the initial PMIC code,

5. A debug system for preventing panel flicker, comprising:

a display;

the debugging jig is electrically connected to the PMIC chip; the debugging tool comprises

A processor; and

a memory electrically coupled to the processor, the memory including a first memory cell for storing the PMIC initial code, the initial verification code, a predetermined PMIC code, and a predetermined initial verification code;

when the PMIC initial code and the initial check code are consistent with the preset PMIC code and the preset initial check code, modifying the initial VCOM data and generating effective VCOM data, and replacing the effective VCOM data with the initial VCOM data to generate a new PMIC code and a new check code; wherein the memory further comprises:

a second memory cell for storing a standard VCOM data and an error interval of the VCOM data;

when initial VCOM data in the PMIC initial code is the standard VCOM data, directly generating a new PMIC code and a new check code, wherein the new PMIC code and the new check code are consistent with the PMIC initial code and the initial check code;

when initial VCOM data in the PMIC initial code falls within an error interval of the VCOM data, modifying the initial VCOM data and generating valid VCOM data, and replacing the valid VCOM data with the initial VCOM data to generate a new PMIC code and a new check code.

6. The debugging system of claim 5,

7. The debug system of claim 6, wherein when the initial voltage data and the initial overcurrent protection data are consistent with the new voltage data and the new overcurrent protection data, the new PMIC code and the new check code are written to a bridge board memory.