CN109257549B - Device and method for displaying OTP state in real time on liquid crystal module - Google Patents
Device and method for displaying OTP state in real time on liquid crystal module Download PDFInfo
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- CN109257549B CN109257549B CN201811071454.2A CN201811071454A CN109257549B CN 109257549 B CN109257549 B CN 109257549B CN 201811071454 A CN201811071454 A CN 201811071454A CN 109257549 B CN109257549 B CN 109257549B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
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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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- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Abstract
The invention provides a device and a method for displaying an OTP state in a liquid crystal module in real time, which comprises a state value character lattice enabling module, wherein the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by a state value by using word library software; the clock module is used for generating a pixel clock according to the time sequence information of the liquid crystal module; according to the invention, when the FPGA is used as a main control chip to display the image on the liquid crystal module to be displayed, the OTP status font is superposed on the image to be displayed, and when the FPGA is used as the main control chip to display the image on the liquid crystal module to be detected, different fonts can be superposed, so that the OTP test status value is displayed on the liquid crystal module to be detected in real time, and the test efficiency, the test reliability and the user experience are improved.
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 an OTP (one time programmable) state in a liquid crystal module in real time.
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 comprises the production processes of liquid crystal module point screen test, flicker adjustment, Vcom adjustment, OTP burning and the like, and the OTP burning is based on the initialization code of the liquid crystal module, and after the flicker and Vcom value test is correct, the OTP burning is burnt into the liquid crystal module. At present, the traditional OTP burning method is that an operator uses a correct initialization code to complete the dot screen test of the liquid crystal module, then uses a test device to test the Flick and Vcom of the liquid crystal module to be produced, and after the Flick and Vcom test values of the liquid crystal module to be tested are stabilized, the liquid crystal module is burned into the liquid crystal module, and whether the burning is successful or not is unknown to the operator, and the operator must read back a register related to a TCON (Timing Controller) chip of the liquid crystal module end to know whether the liquid crystal module to be tested is successfully burned or not, which is complicated and time-consuming.
Disclosure of Invention
The invention provides a device and a method for displaying OTP state in real time on a liquid crystal module, wherein after the OTP of a liquid crystal module to be produced is burned by an operator, the liquid crystal module to be tested can automatically read a register related to a TCON chip at the end of the liquid crystal module and display the burning result OK or NG on the liquid crystal module to be tested in real time, the displayed OK is directly sent to the next stream test point position, and the NG is sent to the unqualified product point position, so that the test time is greatly saved, the test efficiency and the test reliability are improved, and the production efficiency and the product qualification rate of enterprises are improved.
The invention provides a device for displaying an OTP state in a liquid crystal module in real time, which comprises a state value character lattice enabling module, wherein the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by a state value by using character library software; the clock module is used for generating a pixel clock according to the time sequence information of the liquid crystal module; and the OTP state font is superposed on the image to be displayed by the FPGA chip 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.
In the device, the FPGA chip includes a source image output module, a state value 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 status value 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 status value character library storage module is not more than the on-chip storage space of the FPGA chip.
In the above apparatus, the state value character library storage module stores the data values corresponding to the characters in the state value character lattice enabling module.
In the above device, the image timing generation module includes a line counter and a field counter, generates a corresponding timing control signal according to the liquid crystal module timing specification, and the character control module includes control of position coordinates of characters and colors of the characters, calculates a corresponding address according to the state after OTP burning, and takes out data from the state value 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 state value character library storage module, the image timing sequence generation module, the character control module, the image superposition module, and the liquid crystal module.
The device described above, wherein the image superimposing module is configured to determine whether the current display coordinate is a status value character library storage module and a superimposition area of the display image, determine, if the current display coordinate is the superimposition area of the display image, whether data in the status value character library storage module corresponding to the current coordinate is original image data or status value character data, and if the current display coordinate is status value character data, output data of the image superimposing module is corresponding character data in the status value character library storage module; if the color data is not the state value, 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 OTP state in real time on the liquid crystal module, which comprises the following steps:
step (1): providing a state value character lattice enabling module, a ROM initialization 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 state value character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by the state value through character library 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 according to the format of the ROM initialization file in the FPGA, 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 state 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 control signal corresponding to the 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 the OTP state character superposition area, the character control module calculates the address of the pixel in the state value character library storage module according to the coordinate, and sends the address information to the state value character library storage module to read the corresponding state value character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a state value character library storage module and a superposition area of the display image, if so, judges whether the data in the state value character library storage module corresponding to the current coordinate is original image data or state value character data according to the state 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 state 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 color data is not the state value, 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. according to the invention, after the test of burning the OTP of the liquid crystal module to be produced is completed by an operator, the liquid crystal module to be tested can automatically read the register related to the TCON chip at the liquid crystal module end, the burning result OK or NG is displayed on the liquid crystal module to be tested in real time, the displayed OK is directly sent to the next running water test point position, and the displayed NG is sent to the unqualified product point position, so that the test time is greatly saved, the test efficiency and the test reliability are improved, and the production efficiency and the product qualification rate of an enterprise are improved; according to the invention, when the FPGA is used as the main control chip to display the image on the liquid crystal module, the OTP status font is superposed on the image to be displayed, and when the FPGA is used as the main control chip to display the image on the liquid crystal module to be tested, different fonts can be superposed, so that the OTP test status value is 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.
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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 an OTP state 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 an OTP state in a liquid crystal module in real time according to the present invention includes a state value character lattice enabling module 1, wherein the state value character lattice enabling module 1 generates corresponding image lattice enabling data after generating font and size information of a character required by a state value by using font library software; the clock module 7 is used for generating a pixel clock according to the time sequence information of the liquid crystal module 9; the FPGA chip 10 is used for superposing the OTP status font on the image to be displayed according to the image lattice enabling data and the pixel clock by the FPGA chip 10.
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 format of the ROM initialization file inside the FPGA chip 10 into a format file corresponding to the initialization value adapted to the ROM inside the FPGA.
In a preferred but non-limiting embodiment of the present invention, the FPGA chip 10 includes a source image output module 2, a state value character library storage module 4, an image timing sequence generation module 5, a character control module 6, and an image superposition module 8, referring to fig. 1, the source image output module 2 outputs image data conforming to the specification of the current liquid crystal module to be tested 9, and the size of the state value image font is reasonably adjusted according to the storage space of the used FPGA chip 10, so that the storage space occupied by all data stored in the state value character library storage module 4 does not exceed the on-chip storage space of the FPGA.
In a preferred but non-limiting embodiment of the present invention, the state value character library storage module 4 stores data values corresponding to characters in the state value character lattice enabling module 1, and the image timing generation module 5 includes a line counter and a field counter, and generates a corresponding timing control signal according to a timing specification of the liquid crystal module.
In a preferred but nonlimiting embodiment of the present invention, the character control module 6 not only includes control of the position coordinates of the characters and the color of the characters, but also calculates the corresponding address according to the status after the OTP is burned, and takes out the data from the status value character 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 clock module 7 generates a pixel clock by an external clock chip according to timing information of the liquid crystal module 9, where the pixel clock is a clock frequency provided by the status 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, where the image superposition module 8 is configured to determine whether a current display coordinate is a superposition area of the status value character library storage module 4 and the display image, and if the current display coordinate is the superposition area of the display image, determine whether data in the status value character library storage module 4 corresponding to the current coordinate is original image data or status value character data, and if the current display coordinate is status value character data, the data output by the image superposition module 8 is corresponding character data in the status value character library storage module 4; if the color data is not the state value, the image data output by the source image output module 2 is output by the image superposition module 8, wherein the liquid crystal module 9 displays the data output by the image superposition module 8 as a corresponding image.
The invention also provides a method for displaying the OTP state in real time on the liquid crystal module, which comprises the following steps:
step (1): providing a state value character lattice enabling module, a ROM initialization 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 state value character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by the state value through character library 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 according to the format of the ROM initialization file in the FPGA, 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 state 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 control signal corresponding to the 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 the OTP state character superposition area, the character control module calculates the address of the pixel in the state value character library storage module according to the coordinate, and sends the address information to the state value character library storage module to read the corresponding state value character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a state value character library storage module and a superposition area of the display image, if so, judges whether the data in the state value character library storage module corresponding to the current coordinate is original image data or state value character data according to the state 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 state 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 color data is not the state value, 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 OTP state in real time on a liquid crystal module, the invention automatically reads a register related to a TCON chip at the end of the liquid crystal module by a liquid crystal module to be tested after completing the test of burning OTP of the liquid crystal module to be produced by an operator, and displays the burning result OK or NG on the liquid crystal module to be tested in real time, directly sends the OK to the next stream test point position and displays the NG to the unqualified product point position, thereby greatly saving the test time, improving the test efficiency and the test reliability, and improving the production efficiency and the product qualification rate of enterprises; when the FPGA is used as a main control chip to display an image on the liquid crystal module, the OTP status font can be superposed on the image to be displayed. 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, the OTP test state value is 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. The device for displaying the OTP state on the liquid crystal module in real time is characterized by comprising a state value character lattice enabling module, wherein the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by a state value by using word library software; 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 the OTP status font on the image to be displayed according to the image dot matrix enabling data and the pixel clock; the FPGA chip ROM initialization value generating module is used for generating an FPGA chip ROM initialization value according to the FPGA chip ROM initialization value; the FPGA chip comprises a source image output module, a state value character library storage module, an image time sequence generation module, a character control module and an image superposition module; the image superposition module is used for judging whether the current display coordinate is a status value character library storage module and a superposition area of the display image, if so, judging whether data in the status value character library storage module corresponding to the current coordinate is original image data or status value character data, and if so, outputting data in the image superposition module as corresponding character data in the status value character library storage module; if the color data is not the state value, 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 OTP state on the liquid crystal module as claimed in claim 1, wherein the source image output module outputs the image data meeting the specification of the liquid crystal module to be tested, and the font size of the state value image is reasonably adjusted according to the storage space of the FPGA chip, so that the storage space occupied by all the data stored in the state value character library storage module does not exceed the on-chip storage space of the FPGA chip.
3. The apparatus for displaying an OTP state on a liquid crystal display module in real time as claimed in claim 2, wherein the state value character library storage module stores data values corresponding to characters in the state value character lattice enable module.
4. The device for displaying the OTP status on a liquid crystal display module in real time as claimed in claim 3, wherein; the image time sequence generating module comprises a line counter and a field counter, generates a corresponding time sequence control signal according to the liquid crystal module time sequence specification, and the character control module comprises the control of the position coordinates and the color of the characters, calculates a corresponding address according to the state after the OTP burning, takes out data from the state value character library storage module and finally displays the data on the liquid crystal module.
5. The device for displaying OTP status on a liquid crystal display module as recited in claim 4, wherein; the pixel clock provides clock frequency for the state 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 OTP state in real time on a liquid crystal module is characterized in that; the method comprises the following steps:
step (1): providing a state value character lattice enabling module, a ROM initialization 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 state value character library storage module, an image time sequence generating module, a character control module and an image superposition module;
step (2): the state value character lattice enabling module generates corresponding image lattice enabling data after generating font and size information of characters required by the state value through character library 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 according to the format of the ROM initialization file in the FPGA, 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 state 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 control signal corresponding to the 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 the OTP state character superposition area, the character control module calculates the address of the pixel in the state value character library storage module according to the coordinate, and sends the address information to the state value character library storage module to read the corresponding state value character pixel point enabling numerical value;
and (7): the image superposition module judges whether the current display coordinate is a state value character library storage module and a superposition area of the display image, if so, judges whether the data in the state value character library storage module corresponding to the current coordinate is original image data or state value character data according to the state 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 state 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 color data is not the state value, 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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| CN110853557B (en) * | 2019-11-26 | 2022-09-02 | 武汉帆茂电子科技有限公司 | FPGA-based liquid crystal module bomb inspection system and inspection method |
| CN112242114B (en) * | 2020-08-31 | 2023-04-18 | 苏州华兴源创科技股份有限公司 | Device and system for identifying state of module to be displayed |
| CN112135073B (en) * | 2020-09-07 | 2021-11-30 | 合肥富煌君达高科信息技术有限公司 | Image character superposition method based on FPGA |
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