CN109143628B - Device and method for displaying flicker and Vcom values in real time on liquid crystal module - Google Patents
Device and method for displaying flicker and Vcom values in real time on liquid crystal module Download PDFInfo
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- CN109143628B CN109143628B CN201811071452.3A CN201811071452A CN109143628B CN 109143628 B CN109143628 B CN 109143628B CN 201811071452 A CN201811071452 A CN 201811071452A CN 109143628 B CN109143628 B CN 109143628B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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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
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Abstract
The invention provides a device and a method for displaying Flick and Vcom numerical values in a liquid crystal module in real time, which comprises a numerical character lattice enabling module, wherein the numerical character lattice enabling module is used for generating corresponding image lattice enabling data; the clock module is used for generating a pixel clock according to the time sequence information of the liquid crystal module; the invention realizes that the pictures of the liquid crystal module to be tested can display the testing values of the Flick and the Vcom in real time in the testing process of testing the Flick and the Vcom of the liquid crystal module to be produced by an operator, thereby saving the testing cost, improving the testing efficiency and the testing reliability, and improving the production efficiency and the product qualification rate of enterprises.
Description
Technical Field
The invention belongs to the technical field of display and test of liquid crystal modules, and particularly relates to a method for displaying the values of flicks and Vcom in real time on a liquid crystal module.
Background
The liquid crystal module has the advantages of lightness, thinness, low power consumption, small radiation, no screen flicker, rich colors and the like, and is widely used for various mobile phone screens, tablet computer screens, notebook computer screens and other electronic equipment at present; the configuration test before the liquid crystal module leaves factory is an important link, wherein the configuration test includes production processes such as flash adjustment, Vcom adjustment and the like. At present, the traditional method for adjusting and testing the Flick and the Vcom is that an operator uses a testing device to test the Flick and the Vcom of the liquid crystal module to be produced, the picture of the liquid crystal module to be tested has different changes along with the changes of the Flick and the Vcom testing values in the testing process, the Flick and the Vcom testing values of the liquid crystal module to be tested are finally stable along with the end of the testing, and the operator does not know the stable values of the Flick and the Vcom testing values of the liquid crystal module to be tested finally.
Disclosure of Invention
The invention provides a device and a method for displaying the values of the Flick and Vcom in real time on a liquid crystal module, which realize that the pictures of the liquid crystal module to be tested can display the test values of the Flick and Vcom in real time in the test process of testing the Flick and Vcom of the liquid crystal module to be produced by an operator, save the test cost, improve the test efficiency and the test reliability, and improve the production efficiency and the product qualification rate of enterprises.
The invention provides a device for displaying the value of Flick and Vcom in real time on a liquid crystal module, which comprises a numerical character dot matrix enabling module, a data processing module and a data processing module, wherein the numerical character dot matrix enabling module is used for generating corresponding image dot matrix enabling data; the clock module is used for generating a pixel clock according to the time sequence information of the liquid crystal module; and the FPGA chip superposes the numeric fonts of the Flick and Vcom on the image to be displayed according to the image lattice enabling data and the pixel clock.
The device further comprises a ROM initialization value generation module, wherein the ROM initialization value generation module converts the ROM initialization file format in the FPGA chip into a format file corresponding to the initialization value adapted to the ROM in the FPGA chip, and the numerical character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of the characters required by the Flick, Vcom characters, punctuation marks characters and the numerical values from 0 to 9 by using font library software.
In the device, the FPGA chip includes a source image output module, a numerical character library storage module, an image timing sequence generation module, a character control module, and an image superposition module.
In the device, the source image output module outputs image data which accords with the specification of the current liquid crystal module to be tested, and the size of the numerical image font is reasonably adjusted according to the storage space of the used FPGA chip, so that the storage space occupied by all data stored in the numerical character library storage module is not more than the on-chip storage space of the FPGA chip.
In the above device, the numeric character library storage module stores data values corresponding to characters in the numeric character lattice enabling module.
In the above device, the image timing generation module includes a line counter and a field counter, the two counters count the pixel clock cycle generated in the clock module, and generate the corresponding timing signal according to the timing specification of the liquid crystal module, the character control module includes control of the position coordinates of the characters and the colors of the characters, and further calculates the corresponding address according to the values tested by the Flick and Vcom in the liquid crystal module, and takes out the data from the digital character library storage module and finally displays the data on the liquid crystal module.
In the above device, the pixel clock provides a clock frequency for the numeric character library storage module, the image timing generation module, the character control module, the image superposition module, and the liquid crystal module.
The image superimposing module is configured to determine whether the current display coordinate is a numeric character library storage module and a superimposed region of the display image, determine, if the current display coordinate is the superimposed region of the display image, whether data in the numeric character library storage module corresponding to the current coordinate is original image data or numeric character data, and if the current display coordinate is the numeric character data, output data of the image superimposing module is corresponding character data in the numeric character library storage module; if the data is not numerical character data, the image data output by the source image output module is output by the image superposition module, and the data output by the image superposition module is displayed as a corresponding image by the liquid crystal module.
The invention also provides a method for displaying the values of the Flick and Vcom in real time on the liquid crystal module, which comprises the following steps:
step (1): providing a numerical character lattice enabling module, a ROM initial value generating module, an FPGA chip, a clock module and a liquid crystal module, wherein the FPGA chip comprises a source image output module, a numerical character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the numerical value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by Flick and Vcom characters, punctuation marks and numerical values of 0-9 through font software;
and (3): establishing a ROM with the same size in the FPGA chip according to the size of the image lattice enabling data generated in the step (2);
and (4): converting the image dot matrix enabling data generated in the step (2) into a format file corresponding to an initialization value adapted to the ROM in the FPGA chip according to the format of the ROM initialization file in the FPGA chip, and importing the format file into the ROM generated in the step (3);
and (5): the clock module generates a pixel clock corresponding to the liquid crystal module to be tested according to the time sequence information of the liquid crystal module to be tested and outputs the pixel clock to the numerical value character library storage module, the image time sequence generation module, the character control module, the image superposition module and the liquid crystal module, and the line counter and the field counter in the image time sequence generation module start to count circularly according to the generated pixel clock to generate a time sequence signal of corresponding time sequence specification of the liquid crystal module to be tested;
and (6): the character control module calculates the display coordinate of the current moment according to the counter in the step (5) by combining the count value of the counter with the timing sequence standard chart of the liquid crystal module to be tested, if the coordinate is in a Flick, Vcom numerical character superposition area, the character control module calculates the address of the pixel in the numerical character library storage module according to the coordinate, and sends the address information to the numerical character library storage module to read the corresponding numerical character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a numerical value character library storage module and a superposition area of the display image, if so, judges whether the data in the numerical value character library storage module corresponding to the current coordinate is original image data or numerical value character data according to the numerical value character pixel point enabling data in the step (6), if so, the data output by the image superposition module is corresponding character data in the numerical value character library storage module, and outputs characters with different colors according to the character color given by the character control module in the step (6); if the character data is not numerical character data, the image data output by the source image output module is output by the image superposition module, and finally the image is displayed in the liquid crystal module.
The invention has the following beneficial effects: 1. the invention realizes that the pictures of the liquid crystal module to be tested can display the testing values of the Flick and the Vcom in real time in the testing process of testing the Flick and the Vcom of the liquid crystal module to be produced by an operator, saves the testing cost, improves the testing efficiency and the testing reliability, improves the production efficiency and the product qualification rate of enterprises, and can superpose different fonts when the FPGA is used as a main control chip to display images on the liquid crystal module to be tested, so that the Flick and Vcom testing values are displayed on the liquid crystal module to be tested in real time, and the testing efficiency, the testing reliability and the user experience are improved.
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The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic structural diagram of an apparatus for displaying the values of Flick and Vcom in real time in a liquid crystal module according to the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Referring to fig. 1, the device for displaying the value of Flick, Vcom in real time on the liquid crystal module of the present invention includes a numeric character lattice enable module 1, wherein the numeric character lattice enable module 1 is used for generating corresponding image lattice enable data, specifically, the numeric character lattice enable module generates corresponding image lattice enable data after generating the font and size information of the characters required by Flick, Vcom character, punctuation mark character and 0-9 numeric value by using the word stock software; the clock module 7 is used for generating a pixel clock according to the timing information of the liquid crystal module 9, specifically, the clock module 7 generates the pixel clock according to the timing information of the liquid crystal module by an external clock chip, and the pixel clock provides clock frequency for the numerical value character library storage module 4, the image timing generation module 5, the character control module 6, the image superposition module 8 and the liquid crystal module 9; and the FPGA chip 10, wherein the FPGA chip 10 superposes a Flick, Vcom numerical font on the image to be displayed according to the image lattice enabling data and the pixel clock.
In a preferred but non-limiting embodiment of the present invention, the present invention further includes a ROM initialization value generation module 3, wherein the ROM initialization value generation module 3 converts the ROM initialization file format inside the FPGA chip 10 into a format file corresponding to the initialization value adapted to the ROM inside the FPGA chip.
In a preferred but non-limiting embodiment of the present invention, the FPGA chip 10 includes a source image output module 2, a numeric character library storage module 4, an image timing generation module 5, a character control module 6, and an image superposition module 8.
In a preferred but non-limiting embodiment of the present invention, the source image output module 2 outputs image data conforming to the specification of the current liquid crystal module to be tested, the size of the numerical image font is reasonably adjusted according to the storage space of the used FPGA chip, so that the storage space occupied by all data stored in the numerical character library storage module 4 does not exceed the on-chip storage space of the FPGA, and the numerical character library storage module 4 stores the data value corresponding to the character in the numerical character lattice enabling module 1; the image time sequence generating module 5 comprises a line counter and a field counter, wherein the two counters count the pixel clock generated in the clock module 7 in a circulating manner and generate corresponding time sequence signals according to the liquid crystal module time sequence specification.
In a preferred but not limiting embodiment of the present invention, the character control module 6 not only includes the control of the position coordinates of the characters and the colors of the characters, but also calculates the corresponding addresses according to the tested values of flicks and Vcom in the liquid crystal module 9, and takes out the data from the numeric character library storage module 4 and finally displays the data on the liquid crystal module 9.
In a preferred but nonlimiting embodiment of the present invention, the image superimposing module 8 determines whether the current display coordinate is a superimposed region of the numeric character library storage module 4 and the display image, and if the current display coordinate is the superimposed region of the display image, determines whether data in the numeric character library storage module 4 corresponding to the current coordinate is original image data or numeric character data, and if the current display coordinate is the numeric character data, the data output by the image superimposing module 8 is corresponding character data in the numeric character library storage module 4; if the data is not the numerical character data, the image data output by the source image output module 2 is output by the image superposition module 8, and the data output by the image superposition module 8 is displayed as a corresponding image by the liquid crystal module 9.
The invention also provides a method for displaying the values of the Flick and Vcom in real time on the liquid crystal module, which comprises the following steps:
step (1): providing a numerical character lattice enabling module, a ROM initial value generating module, an FPGA chip, a clock module and a liquid crystal module, wherein the FPGA chip comprises a source image output module, a numerical character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the numerical value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by Flick and Vcom characters, punctuation marks and numerical values of 0-9 through font software;
and (3): establishing a ROM with the same size in the FPGA chip according to the size of the image lattice enabling data generated in the step (2);
and (4): converting the image dot matrix enabling data generated in the step (2) into a format file corresponding to an initialization value adapted to the ROM in the FPGA chip according to the format of the ROM initialization file in the FPGA chip, and importing the format file into the ROM generated in the step (3);
and (5): the clock module generates a pixel clock corresponding to the liquid crystal module to be tested according to the time sequence information of the liquid crystal module to be tested and outputs the pixel clock to the numerical value character library storage module, the image time sequence generation module, the character control module, the image superposition module and the liquid crystal module, and the line counter and the field counter in the image time sequence generation module start to count circularly according to the generated pixel clock to generate a time sequence signal of corresponding time sequence specification of the liquid crystal module to be tested;
and (6): the character control module calculates the display coordinate of the current moment according to the counter in the step (5) by combining the count value of the counter with the timing sequence standard chart of the liquid crystal module to be tested, if the coordinate is in a Flick, Vcom numerical character superposition area, the character control module calculates the address of the pixel in the numerical character library storage module according to the coordinate, and sends the address information to the numerical character library storage module to read the corresponding numerical character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a numerical value character library storage module and a superposition area of the display image, if so, judges whether the data in the numerical value character library storage module corresponding to the current coordinate is original image data or numerical value character data according to the numerical value character pixel point enabling data in the step (6), if so, the data output by the image superposition module is corresponding character data in the numerical value character library storage module, and outputs characters with different colors according to the character color given by the character control module in the step (6); if the character data is not numerical character data, the image data output by the source image output module is output by the image superposition module, and finally the image is displayed in the liquid crystal module.
The invention provides a method and a device for displaying Flick and Vcom numerical values in real time on a liquid crystal module, which can superpose a Flick and Vcom numerical font on an image to be displayed when an FPGA (field programmable gate array) is used as a main control chip to display the image on the liquid crystal module. The invention has the beneficial effects that: when the FPGA is used as a main control chip to display images on the liquid crystal module to be tested, different fonts can be superposed, so that the Flick and Vcom test values are displayed on the liquid crystal module to be tested in real time, and the test efficiency, the test reliability and the user experience are improved.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (6)
1. A device for displaying the numeric value of Flick and Vcom in real time on a liquid crystal module is characterized by comprising a numeric character dot matrix enabling module, wherein the numeric character dot matrix enabling module is used for generating corresponding image dot matrix enabling data; the clock module is used for generating a pixel clock according to the time sequence information of the liquid crystal module; the FPGA chip superposes Flick and Vcom numerical fonts on an image to be displayed according to the image lattice enabling data and the pixel clock, the FPGA chip comprises a source image output module, a numerical character library storage module, an image time sequence generation module, a character control module and an image superposition module, the source image output module outputs image data which accords with the specification of the current liquid crystal module to be detected, the size of the numerical image fonts is reasonably adjusted according to the storage space of the used FPGA chip, so that the storage space occupied by all data stored in the numerical character library storage module is not more than the in-chip storage space of the FPGA chip, the image superposition module is used for judging whether the current display coordinates are the numerical character library storage module and the superposition area of the display image, if so, the data in the numerical character library storage module corresponding to the current coordinates are judged to be original image data or numerical character data, if the data is numerical character data, the data output by the image superposition module is corresponding character data in the numerical character database storage module; if the data is not numerical character data, the image data output by the source image output module is output by the image superposition module, and the data output by the image superposition module is displayed as a corresponding image by the liquid crystal module.
2. The device for displaying the numeric values of Flick and Vcom in real time on the liquid crystal module as claimed in claim 1, further comprising a ROM initialization value generation module, wherein the ROM initialization value generation module converts the format of the ROM initialization file in the FPGA chip into a format file corresponding to the initialization value adapted to the ROM in the FPGA chip, wherein the numeric character lattice enabling module generates the font and size information of the characters required by Flick, Vcom characters, punctuation marks and numeric values from 0 to 9 by using word library software, and then generates corresponding image lattice enabling data.
3. The device for displaying the Flick and Vcom values in real time on the liquid crystal module as claimed in claim 2, wherein the numeric character library storage module stores the data values corresponding to the characters in the numeric character lattice enabling module.
4. The device for displaying the value of Flick, Vcom in real time on the liquid crystal module as claimed in claim 3, wherein;
the image time sequence generation module comprises a line counter and a field counter, the two counters count pixel clock cycles generated in the clock module, corresponding time sequence signals are generated according to liquid crystal module time sequence specifications, the character control module comprises control of position coordinates of characters and colors of the characters, corresponding addresses are calculated according to numerical values tested by Flick and Vcom in the liquid crystal module, data are taken out from the numerical value character library storage module, and the data are finally displayed on the liquid crystal module.
5. The device for displaying the value of Flick, Vcom in real time on the liquid crystal module as claimed in claim 4, wherein;
the pixel clock provides clock frequency for the numerical value character library storage module, the image time sequence generation module, the character control module, the image superposition module and the liquid crystal module.
6. A method for displaying the values of Flick and Vcom in real time on a liquid crystal module is characterized in that; the method comprises the following steps:
step (1): providing a numerical character lattice enabling module, a ROM initial value generating module, an FPGA chip, a clock module and a liquid crystal module, wherein the FPGA chip comprises a source image output module, a numerical character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the numerical value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by Flick and Vcom characters, punctuation marks and numerical values of 0-9 through font software;
and (3): establishing a ROM with the same size in the FPGA chip according to the size of the image lattice enabling data generated in the step (2);
and (4): converting the image dot matrix enabling data generated in the step (2) into a format file corresponding to an initialization value adapted to the ROM in the FPGA chip according to the format of the ROM initialization file in the FPGA chip, and importing the format file into the ROM generated in the step (3);
and (5): the clock module generates a pixel clock corresponding to the liquid crystal module to be tested according to the time sequence information of the liquid crystal module to be tested and outputs the pixel clock to the numerical value character library storage module, the image time sequence generation module, the character control module, the image superposition module and the liquid crystal module, and the line counter and the field counter in the image time sequence generation module start to count circularly according to the generated pixel clock to generate a time sequence signal of corresponding time sequence specification of the liquid crystal module to be tested;
and (6): the character control module calculates the display coordinate of the current moment according to the counter in the step (5) by combining the count value of the counter with the timing sequence standard chart of the liquid crystal module to be tested, if the coordinate is in a Flick, Vcom numerical character superposition area, the character control module calculates the address of the pixel in the numerical character library storage module according to the coordinate, and sends the address information to the numerical character library storage module to read the corresponding numerical character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a numerical value character library storage module and a superposition area of the display image, if so, judges whether the data in the numerical value character library storage module corresponding to the current coordinate is original image data or numerical value character data according to the numerical value character pixel point enabling data in the step (6), if so, the data output by the image superposition module is corresponding character data in the numerical value character library storage module, and outputs characters with different colors according to the character color given by the character control module in the step (6); if the character data is not numerical character data, the image data output by the source image output module is output by the image superposition module, and finally the image is displayed in the liquid crystal module.
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