TWI224731B - Method and device for manufacturing display device - Google Patents

Abstract

The present invention is a method to write E-EDID information into the ROM 18 of the liquid crystal display device 12, and provides a method to proceed the writing operation steps continuously after the image check is completed using the same device. The present invention comprises: a test data selection step to select the image test data for proceeding the image check of the liquid crystal display device 12; a reading step of manufacturing serial number to read the manufacturing serial number; an E-EDID information writing step to find the specified manufacturing data in the E-EDID information of the corresponding image test data from the image checking device, and write the found specified manufacturing data, the read manufacturing serial number, and the current manufacturing year/week counted by the timer into ROM 18 as the E-EDID information; and an image checking step to proceed the image check by the selected image test data.

Description

1224731

I is replacing Gong

说明 Description of the invention (The description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the drawings are briefly explained) The technical field to which the invention belongs The invention relates to liquid crystal display devices, organic EL display devices, CRTs Manufacturing method for writing E-EDID information of display device. The prior art includes the Video Electronics Standards Association (VESA), which promotes the standardization of image-related technology and the development and support of standards for graphic magazines. The VESA re-clarified computer monitors on February 1, 2000. Of four standard specifications. The first standard specification is Enhanced Extended Identification Date (E-EDID). The E-EDID is a data format that specifies the functions of the display and the ID to be transmitted to the host computer. The data consists of 128 bytes. The second standard specification is the Enhanced Display Date Channel (E-DDC). This E-DDC is a regulation that specifies the specifications of the communication channel between the monitor and the host computer and the mutual transmission of data. Therefore, the setting and control of the configuration are carried out using this channel, which is to expand the existing DDC in order to handle a large amount of data. The third standard specification is VESA-Generalized Timing Formula (GTF). The GTF is a standard that determines the timing of the display. It fixes the update rate of the display and no longer requires a preset standard. The fourth standard specification is the video signal standard (Video Signal Standard O: \ 82 \ 82616-920721. DOC \ 5 \ WCK -5- 1224731

(2) (VSIS)). This VSIS is a standard for standardizing analog video signals and corresponds to the standards for the development of displays and graphics cards. [Problems to be Solved by the Invention] Recently, there have been manufacturers who sell the E-EDID information described above in a liquid crystal display device. This is because the history of the liquid crystal display device can be discriminated after the E-EDID information is written. Therefore, in order for the liquid crystal display device to memorize the E-EDID information, a ROM 1C is provided in the driving circuit of the liquid crystal display device. : The method of making it memorize is to write the E-EDID information to the liquid crystal display device which has completed and passed the image inspection. However, at the same time, in order to write the E-EDID information, it is necessary to reconnect to the writing device, and it is necessary to add a step of re-entering information such as the type of the liquid crystal display device. Therefore, there is a disadvantage that it requires an increase in operation steps. In view of the above-mentioned disadvantages, the present invention does not need to increase the number of work steps when writing manufacturing history data into a display device, but provides a method for manufacturing a display device that can be written. [Means for Solving the Problem] The invention of claim 1 relates to a specification in which a recording medium provided in a display device such as a liquid crystal display device, an organic EL display device, or a CRT can include a manufacturing number, a manufacturing year, and a specification of the display device. Manufacturing method of display material The manufacturing method of the display device of the history data includes a test data selection step for performing an image inspection of the display device, and selecting an image to be stored in the image inspection device to which the display device is applied. Test fund O: \ 82 \ 82616-920721 DOC \ 6 \ WCK -6- 1224731

(3)

Step of reading the manufacturing number, which reads the manufacturing number of the aforementioned display device; writing step of manufacturing history information, which includes the manufacturing history information of the display device corresponding to the aforementioned selected image test data, from the aforementioned figure The inspection specification device reads the aforementioned specification data, the read specification data, the previously read manufacturing number, and the current manufacturing year and week measured by the timer of the image inspection device are written into the recording medium as manufacturing history data; image The inspection step is to perform an image inspection of the display device by the image inspection device through the selected image test data. : As in the method for manufacturing the display device of claim 1, the invention of claim 2 is to perform the aforementioned reading step if the type of the display device corresponding to the selected image test data is a type that can be written by the manufacturing history data; if When the manufacturing history data is a type that cannot be written, the aforementioned image inspection step is performed. For example, the manufacturing method of the display device of claim 1, and the invention of claim 3 is a step of reading manufacturing history data, which reads the manufacturing history recorded in the aforementioned recording medium when the manufacturing history data has been written in the aforementioned recording medium. The judgment step is to judge whether the previously read manufacturing history data is normal; when the aforementioned manufacturing history data is normal, save the current manufacturing year and week measured by the image inspection device to the previously read manufacturing history data and perform the foregoing The image checking step, and the manufacturing history data writing step is performed when the manufacturing history data is abnormal. The invention of claim 4 relates to a manufacturing device for a display device, and is characterized in that it has a first memory section, which has a plurality of image test data corresponding to each display device, and stores the foregoing corresponding to the plurality of image test data. Display specifications (size) data; second memory to remember the aforementioned manufacturing number

O: \ 82 \ 82616-92072l D0C \ 6 \ WCIC 1224731 (4)

A timer for measuring year-of-week data; an interface section connected to the aforementioned display device; and a control section which sends each of the data stored in the first and second memory sections and the year-of-week data to the aforementioned interface . The present invention relates to a method for writing continuous manufacturing history data and performing image inspection by using the same image inspection device to enable continuous processing, which can greatly improve productivity. The manufacturing history data in the present invention includes the manufacturing serial number data of the display device, the manufacturing hair week data, and the specification data i identifying the type of the display device. The manufacturing number data is a serial number given to the display device in the form of a bar code label or the like before the manufacturing steps of the present invention. However, in addition to this method, a method of storing the serial number in the ROM-IC of the display device may be adopted. The manufacturing year and week data is composed of the manufacturing year data and the manufacturing week data (1 to 53 weeks, and the leap year is 54 weeks). The present invention writes an inspection device into the recording medium of the display device when the manufacturing history data writing step is performed. Year and week data measured by a timer. The specification data is the data of the length and width of the display device screen, and various recommended timings (horizontal display period, horizontal blank period, vertical display period, vertical blank period, etc.), etc. Among the various specifications, the type of display device can be identified (The display device manufacturer manages the model of the display device). Although the combination of the specifications can be changed according to the needs of the user, it is usually based on the standardized model codes such as the E-EDID standard. And as mentioned earlier, the E-EDID standard is generally available. In addition, the image test data is composed of various timing signals and image data driving the display device, the size and timing of the screen and different driving voltages O: \ 82 \ 82616-920721. DOC \ 6 \ WCK. -8- 1224731

The test data corresponding to a variety of types: each type is stored in the first memory of a drive such as a built-in hard disk of the inspection device. The operator of the inspection device confirms the type (model) of the display device to be inspected, such as a sticker attached to the display device, and the file name of the test data displayed on the display of the inspection device (displayed in the same form as the model name) ) Select the same file name as the model to be checked. After selecting the file name of the test data, in the specification data stored in the first memory section of the same inspection device with a built-in hard disk drive, etc., it is set to automatically select the same file name as the selected test data file name (that is, Program file name file that matches the display device model to be checked). In the manufacturing history writing step, the selected specification data has been inputted with the manufacturing number data of the second memory unit composed of a memory device such as a RAM (random access memory) built in the inspection device and the year and week measured by the timer. After the data is combined, it is sent to the interface, and then sent to the storage medium of the display device. In addition, test data and specification data can also be stored in separate hard disk devices built into the inspection device. Then, in the image inspection step, the display device is driven by the selected test data, and its lighting state is observed visually or by a camera to check whether there are defects in the display. The image data included in the test data corresponds to the type and display order of the image patterns (all lit, partially lit, etc.) used in the inspection and can be any image data. In addition, each piece of hardware (control device, memory device, interface) that constitutes the inspection device system can use a hardware configuration that is well-known by various manufacturers, and can adopt various configurations without departing from the scope of the present invention. O: \ 82 \ 82616-920721. DOC \ 6 \ WCK -9-1224731 ⑹

Embodiments The following describes a procedure for performing image inspection and writing of manufacturing history data of the liquid crystal display device 12 using the image inspection device 10 according to one embodiment of the present invention, with reference to FIGS. 1 to 5. In addition, in this embodiment, the manufacturing history data is constructed with reference to the E-EDID standard. (1) Configuration of liquid crystal display device 12 Fig. 1 is a block diagram showing the relationship between the image inspection device 10 and the liquid crystal display device 12. First-In this embodiment, the display device 12 to be inspected is composed of a well-known TFT liquid crystal module. That is, as shown in FIG. 1, a driving circuit substrate 14 provided on the back surface of a liquid crystal cell 13 made of liquid crystal cells sealed between two glass substrates including a TFT array is provided with a driving TFT array not shown in the figure. The controller 1C that distributes control signals such as image data and other clock signals from external inputs to the peripheral drive circuit IC composed of a scanning line drive circuit and a signal source drive circuit, and is also equipped with a memory for storing E-EDID information ROM 18. Therefore, after inputting a control signal from the outside of the controller 1C, a connector 16 having multiple terminals is provided for inputting E-EDID information into the ROM 18. A label 20 is attached to the rear side of the liquid crystal display device to display a bar code indicating the manufacturing number of the liquid crystal display device 12. (2) Configuration of the image inspection device 10 The image inspection device 10 outputs test data including image data for image inspection to the liquid crystal display device 12, and the E-EDID information is confirmed before the image inspection. The function of writing and reading. It is a device for image inspection immediately after E-EDID information processing. The image inspection device 10 is mainly composed of a computer O: \ 82 \ 82616-920721 DOC \ 6 \ WCK -10- 1224731 ⑺ 7. 21

It is divided into two parts: a CPU 25 as a control device and a timer 22 that measures the current year, month, day, time, and week. In addition, test data corresponding to various liquid crystal display devices 12 for image inspection is stored in a first hard disk drive 26 composed of hard disks, and E-EDID information corresponding to the test data is recorded in the first Two hard drives 2 in 8. This E-EDID information is recorded in the form of a file in a specific form (for example, EXCELL (registered trademark)). In addition, the image inspection device is provided with various data and E-EDID information for inspection stored in the memory unit through connection cables not shown in the figure, which are connected to the connector 16 of the liquid crystal display device 12 strictly. Output of the mesial face. The interface can be constructed using well-known computer hardware. Therefore, once the test data is selected, the E-EDID information corresponding to the selected test data can be called up. Furthermore, an E-EDID flag is set in each test data to determine whether the type of E-EDID information is required or the type of E-EDID information is not required. When the E-EDID flag is ON, the E-EDID information is called up by the second hard disk drive 28. This is because, depending on the user, there will be a requirement to memorize the E_EDID information to the display device and an unnecessary requirement. In order to meet the two requirements, it is determined whether the E_EDID information needs to be written while entering the test data. Therefore, in the display device whose flag is OFF, as will be described later, the E-EDID information is not written but the inspection step is directly performed, so that the step can be shortened and the production efficiency can be improved. Also, a job B0X 24 'for inspector operation is connected and a barcode reader 30 is connected. A touch screen with a liquid crystal display is set on the job box 24. \\\\ 16616-920721. DOC \ 6 \ WC K -11-摸 The touch panel is the same as the display device model (for example: △ X χ X χ (△ 是English letters, X is an integer from 0 to 9)) In the test data name displayed in the same form, select a file with the same name as the crack number of the display device to be checked. (3) Contents of E-EDID information Next, the manufacturing history data determined by the E-EDID specifications will be described with reference to FIGS. 4 and 5. E-EDID information starts from address 〇 〇! } Up to 27} 2 8-byte data composition, each of which is recorded in green on the manufacturing history of the liquid crystal display device 2; data. For example, the manufacturing week is recorded in address 16; the manufacturing year is recorded in address 17; the maximum horizontal display size and the maximum vertical display size are recorded in addresses 21 and 22. At address 1 27, the check sum (Check Sum) after the addition of all data from address 00 to address 1 26 is recorded. The Check Sum is used to determine whether the E-EDID information is normal or abnormal 'as data standardized by the E-EDID specification. The sum of the next two digits of the Check Sum data after adding the data from address 00 to address 126 is normal. If it is a number other than 0, the display is abnormal. (4) Image checking and writing procedure of E-EDID information Next, the image checking and writing of E-EDID information of the liquid crystal display device 12 will be described with reference to the flowcharts of FIGS. 2 and 3. This step is the last step in the liquid crystal display device 12 and is a step performed in a state where the liquid crystal display device 12 is completely assembled. Initially, the connection line of the inspection device 10 is connected to the connector 6 of the liquid crystal display device 12. First check the E-EDID information before the image check. O: \ 82 \ 82616-920721. DOC \ 6 \ WC K -12- 1224731

⑼

In the first step, it is determined whether the E-EDID information of the subject liquid crystal display device 12 can be changed. That is, if the E-EDID information is not written in the liquid crystal display device 12, the E-EDID information is rewritten, and if the E-EDID information has been written, it is judged whether it can be rewritten after modification. When the E-EDID information has been written, it is equivalent to the liquid crystal display device 12 which performs the image inspection again after the image inspection step is failed. After that, if the E-EDID information can be changed, proceed to step 2 骡. If the change is prohibited, proceed to step 3. -In the second step, since the E-EDID information can be changed, select the test data corresponding to the 12 types of liquid crystal display device for image inspection, and then enter the fourth step. In the third step, since the change of the E-EDID information is prohibited, the liquid crystal display device 12 is set to the reading confirmation mode in the common menu). This reading confirmation mode is a mode for judging whether the E-EDID information that has been written is normal or abnormal, and is implemented in the subsequent steps.

In the fourth step, it is determined whether the E-EDID flag in the image inspection test data read by the image inspection device 10 is ON or OFF. That is, if the E-EDID flag is OFF, the E-EDID information will no longer be written to check the steps. Conversely, if the E-EDID flag is ON, the process proceeds to step 5. In the fifth step, it is determined whether there is E-EDID information corresponding to the test data in the second hard disk drive 28. The E-EDID information is the same as the test data, and is saved in the same file name as the display device model (for example, △ XXXX (△ is an English letter, X is an integer from 0 to 9). The test data is the same as the E- EDID information is identified by different identification symbols (.edi, etc.) from each other. Check O: \ 82 \ 82616-920721. DOC \ 6 \ WCK -13- 1224731

The device is programmed to retrieve E-EDID information whose file name matches the test data file name. Therefore, if the E-EDID information is not recorded in the second hard disk drive 28, the operation box 24 ends with an error display. If E-EDID information exists, go to step 6. In the sixth step, the test data is read from the first hard disk drive 26 of the image inspection apparatus 10, and the image inspection is prepared. The bar code reader 30 then reads the manufacturing number. In step 7--, the bar code reader 3 0 reads the bar code 2 0 on the back of the liquid crystal display device 10, and enters the manufacturing number into the image inspection device 10, and records it in the image inspection device. A second storage unit (not shown) formed by a storage device such as a RAM of the device 10. In step 8), it is judged whether the last 5 digits of the manufacturing number read are digits. If it is not a number, it returns to step 6 and instructs to read the manufacturing number again. This judgment is made because a plurality of bar codes for inputting information other than the manufacturing number are affixed to the back of the liquid crystal display device 10, and when another information is inputted by mistake in operation, it is instructed to read again. When the last 5 digits of the manufacturing number are numbers, proceed to step 9. In the ninth step, it is determined whether or not the manufacturing number has been read within the last day. If it is the same manufacturing number, step 10 is performed. If it is a different manufacturing number, go to step 12. In step 10, since the manufacturing number read in the last day is the same, the indicator of job box 24 flashes to remind the inspector's attention. Step 11 If the inspector notices and presses the cursor button of job BOX 24 and then enters step 12; if the downstream cursor key is not pressed, it returns to step 6 and O: \ 82 \ 82616-920721 DOC \ 6 \ WCK -14- 1224731 (11)

W

Read the manufacturing number twice. Step 1 2 Press the test start button of job box 24 to start the image check. Step 13: Determine whether it is a read confirmation mode. If it is the read confirmation mode, it is necessary to judge whether the E-EDID information written in the ROM 18 of the liquid crystal display device 12 is normal or not, and the process proceeds to step 14. If not, please take the confirmation mode and go to step 6 Step 14: Read the E-EDID information embedded in the ROM 1 8 of the liquid crystal display device 12; check whether the Check Sum of the e-EDID information read in step 5 is 0 (that is, whether it is normal). Judge. If it is normal, go to step 19. If it is still abnormal, it is necessary to enter step 16 to write E-EDID information again. In the 16th step, the E-EDID information is sent from the mesial surface of the inspection device, and the E-EDID information is written in the ROM 18 of the liquid crystal display device 12. The E-EDID information written here is the E-EDID information corresponding to the test data, the manufacturing number is written in the manufacturing number read by the barcode reader 3 0, and the manufacturing year is written in the image inspection device 10 The real time of the current year and week measured by the timer 2 2. In step 17, the image inspection device 10 reads the written E-EDID information again, and in step 18, it checks whether the read E-EDID information is normal or abnormal. Therefore, it is determined whether the read check sum is equal to the written check sum or not. When the check Sum is equal or the value is 0, it is judged that the E-EDID information is normally written and the process proceeds to step 19. In all other cases, an error message is displayed and the check ends. O: \ 82 \ 82616-920721. DOC \ 6 \ WCK -15-

1224731 In step 19, the manufacturing year and week in the newly read E-EDID information are displayed on job box 24, and in step 20, normal image inspection is performed. That is, the test data selected in the test data selection step 2 is sent from the interface portion of the inspection device to the liquid crystal display device 12, and after the liquid crystal display device is lit, it is visually or photographically confirmed whether there is a display defect. In this way, the writing of the E-EDID information and the image inspection are continuously performed using the same device, which can simplify the operation steps. In addition, if the information written in E-EDID is not confirmed as normal writing, it will not be able to go to the next step. You can set the E-EDID information writing forget function and the check function in the program. In addition, the E-EDID information is written into the barcode reader 30 after entering the manufacturing number, because it has a confirmation function, which prevents the E-EDID information from being entered incorrectly. Furthermore, although the liquid crystal display device 12 is prohibited from replacing the E-EDID information, it can be judged whether the E-EDID information written in the read confirmation mode is normal or abnormal. Although the liquid crystal display device has been described in the above embodiment, if the display device is replaced with an organic EL display device or a brown tube CRT display device, the E-EDID information can also be written continuously after the image inspection step. In addition, various hardware constituting the image inspection apparatus and the computer system can use well-known components, and various changes can be made within the scope not exceeding the gist of the present invention. For example, the first storage unit and the second storage unit may be constituted by separate hard disk drive devices. There are also memory devices that can be used in appropriate combinations such as hard disk drives and RAM. O: \ 82 \ 826! 6-920721. DOO-6 \ WCK -16- 1224731 (13)

[Effects of the Invention] According to the above description, the present invention can continuously write E-EDID information on the display device after image inspection, which simplifies the operation steps and prevents errors in the writing step. Brief Description of the Drawings Fig. 1 is a block diagram of an image inspection apparatus as one embodiment of the present invention. FIG. 2 is a first flowchart of the image checking and writing steps. FIG. 3 is a second flowchart of the image checking and writing steps. Figure 4 is a diagram showing an E-EDID information sheet. FIG. 5 is a chart continuing the table of FIG. 4. Description of Symbols of the Symbols 10 Image Inspection Device 12 Liquid Crystal Display Device 14 Drive Circuit Board 16 Connector 18 ROM 20 Bar Code 22 Timer 24 Job Box 2 6 First Hard Disk Drive 28 Second Hard Disk Drive 30 Bar Code Reader O : \ 82 \ 82616-920721 DOC \ 6 \ WCK -17-

Claims (1)

1224731 Patent Application No. 091136828 Chinese Application for Patent Scope Replacement (July 1993) Pick up and apply for patent scope 1. A method for manufacturing a display device, which is written in a recording medium provided in the display device including the display device The manufacturing method of a display device for manufacturing serial number data, manufacturing year and week data, and specification data identifying the type of the display device includes the steps of connecting the display device to the image inspection device, and the image inspection The device includes: a first memory unit that stores a plurality of image test data corresponding to each display device and the aforementioned specification data corresponding to each of the plurality of image test data; a second memory unit that stores the aforementioned manufacturing number; and a measurement year A timer for weekly data; an interface part connected to the display device; a control part that sends various data stored in the first and second memory parts and the year-of-week data to the interface part; a test data selection step, It is from the plurality of image test data stored in the first memory section. Choose to adapt the image test data of the display device; The step of reading the manufacturing number data is to input the manufacturing number data given to the display device into the image inspection device so that it is stored in the second memory section; write the manufacturing history data Into the step, it is for the first record stored in the aforementioned O: \ 82 \ 82616-930715.DOCN7 1224731 Application guidance scope: Continued: pages. The aforementioned specifications in the memory section will correspond to the aforementioned specifications for the image test data selected in the aforementioned test data selection step, and the aforementioned manufacturing number reading step will be stored in the aforementioned section. The memory number in the two memory sections and the current year and week data measured by the timer are written into the recording medium via the interface; and an image inspection step for performing a light emission inspection on the display device. After the manufacturing history data writing step, the image test data selected in the test data selection step is sent to the display device through the interface surface. 2. For the manufacturing method of the display device according to item 1 of the scope of the patent application, wherein the aforementioned image test data includes judgment data for whether the aforementioned manufacturing history data is required, and if the image test data selected in the aforementioned test data selection step is required or not When the discriminating data is displayed as not manufacturing history data, the aforementioned manufacturing number data reading step and manufacturing history data writing step are omitted. 3. For the manufacturing method of the display device according to item 1 of the scope of patent application, wherein the inspection step is performed, it is to check whether there is the aforementioned manufacturing history data on the aforementioned recording medium before the aforementioned test data selection step; the reading steps of the manufacturing history data, It is the one that reads the manufacturing history data detected in the aforementioned detection step and stores it in the aforementioned second memory; O: \ 82 \ 82616-930715.DOC \ 7 \ -2- 1224731 β! ΐ.. 1 Pf month I judgment step, which is based on the total value of each specification data included in the manufacturing history data stored in the aforementioned second memory section to determine whether the manufacturing history data is qualified; and if When the manufacturing history data is determined to be abnormal, the writing step is continued. When the manufacturing history data is determined to be normal, the writing step is replaced, and the current manufacturing year and week measured by the timer is overwritten to The display device is in a storage medium. 4. A manufacturing device for a display device, comprising: a first memory unit that stores a plurality of image test data of each display device and the aforementioned display specifications (sizes) corresponding to each of the plurality of image test data Data; a second memory unit storing the aforementioned manufacturing number; a timer for measuring year-of-week data; an interface portion connected to the aforementioned display device; and a control unit which is to be stored in each of the aforementioned first memory unit and the second memory unit The data and the aforementioned weekly data are sent to the aforementioned interface. O: \ 82 \ 82616-930715.DOC \ 7 \ -3-