KR20030055134A - Method for manufacturing display device and apparatus therefor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a display device and a device for manufacturing the same. In the process and the E-EDID information corresponding to the image test data, the image inspection apparatus calls the manufacturing data of the regulation, and the manufacturing data of the called regulation, the serial number to be read out, and the current production measured by the timer. A liquid crystal display device (12) comprising an E-EDID information recording process for recording a year's week as E-EDID information in the ROM 18, and an image inspection process for performing an image inspection with selected image test data. A method of recording E-EDID information into a ROM 18 installed in the memory device, the method comprising: performing a recording process by using the same apparatus continuously as an image inspection; It shall be.

Description

Method for manufacturing display device and manufacturing device therefor {METHOD FOR MANUFACTURING DISPLAY DEVICE AND APPARATUS THEREFOR}

The present invention relates to a manufacturing method for recording E-EDID information of a display device such as a liquid crystal display device, an organic EL display device, a CRT, or the like.

The Video Electronics Standards Association (VESA) exists to standardize video technology and to set and support standards for graphics environments.

The VESA unveils four standard specifications for computer displays on February 1, 2000.

The first standard specification is Enhanced Extended Identification Data (E-EDID). This E-EDID specifies the data format for transmitting the display function and ID to the host computer, and the data consists of 128 bytes.

The second standard specification is an Enhanced Display Data Channel (E-DDC), which is a specification for establishing a communication channel between a display and a host and a computer, and data is exchanged in both directions. The configuration and control of the configuration is performed using this channel, and the existing DDC is extended to handle a large amount of data.

The third standard specification is the VESA Generalized Timing Formula (GTF), which is defined on how to generate the timing of the display, eliminating the need to fix or preset the refresh rate of the display.

The fourth standard specification is the Video Signal Standard (VSIS), which standardizes analog video signals and corresponds to the development of displays and graphics cards.

Recently, manufacturers that record and sell the above-described E-EDID information on a liquid crystal display have been shown. This is because the history of the liquid crystal display device can be determined by recording the E-EDID information.

In order to store the E-EDID information in the liquid crystal display device, a ROM IC is provided in the driving circuit of the liquid crystal display device.

In this storing method, the E-EDID information is recorded for a product in which a liquid crystal display device is completed and the image inspection has passed.

However, in order to record the E-EDID information, there is a problem in that the process of connecting the recording apparatus again and inputting the type of the liquid crystal display and the like again increases, which increases the working process.

Accordingly, in view of the above problems, the present invention provides a manufacturing method of a display device which can record the manufacturing history data on the display device without increasing the work process.

1 is a block diagram of an image inspection device and a liquid crystal display device according to an embodiment of the present invention;

2 is a first flowchart of an image inspection and recording process;

3 is a second flowchart of an image inspection and recording process;

4 is a diagram showing a table of information of an E-EDID and

5 is a continuation of the table of FIG. 4.

* Explanation of symbols for the main parts of the drawings

10: image inspection device 12: liquid crystal display device

14: driving circuit board 16: connector

18: ROM 20: Barcode

22: timer 24: operation box

26: first hard disk drive 28: second hard disk drive

30: barcode reader

The invention of claim 1 is a display for recording manufacturing history data including a manufacturing number, a manufacturing year week, and specification data of a display device on a recording medium installed in a display device such as a liquid crystal display device, an organic EL display device, a CRT, or the like. In the manufacturing method of the apparatus, in order to perform the image inspection of the display apparatus, a test data selection process of selecting image test data adapted to the display apparatus stored in the image inspection apparatus, and the manufacturing number of the display apparatus are read. The specification data is called from the image inspection apparatus among the manufacturing serial number reading process to be entered and manufacturing history data relating to the display device corresponding to the selected image test data, and the called specification data and the serial number to be read out are And the current manufacturing year week measured by the timer of the image inspection apparatus to the recording medium as production history data. By the lock manufacturing history data recording step, the selected image data to the test method of manufacturing a display device characterized in that it has an image inspection process performed by the image testing device for testing an image of the display device.

The invention according to claim 2 is characterized in that the reading process is performed when the type of the display device corresponding to the selected image test data is a type for recording manufacturing history data, and the image inspection step when the kind is not recorded. The manufacturing method of the display apparatus of Claim 1 which implements.

The invention according to claim 3 is a manufacturing history data reading step of reading manufacturing history data recorded on the recording medium when the manufacturing history data is already recorded on the recording medium, and whether the read manufacturing history data is normal or abnormal. A discrimination process of determining the difference and, if the production history data is normal, the image inspection process is performed by overwriting the current manufacturing year week measured by the image inspection apparatus with the read manufacturing history data. If above, the manufacturing method of the display device according to claim 1, wherein the manufacturing history data recording process is performed.

The invention of claim 4 further comprises: a first memory unit in which a plurality of image test data corresponding to each type of display device and the display size data corresponding to each of the plurality of image test data are accumulated; The memory unit, a timer for measuring yearly week data, an interface part connected to the display device, and each data accumulated in the first and second memory parts and the yearly week data are sent to the interface. It is a manufacturing apparatus of the display apparatus characterized by including the control part.

In the present invention, since the recording of the manufacturing history data and the image inspection can be processed as a series of steps using a common image inspection apparatus, the production efficiency can be dramatically improved.

In the present invention, the manufacturing history data includes manufacturing number data, manufacturing year week data of the display device, and specification data for identifying the variety of the display device. The serial number data is a serial number given to the display device by the formation of a barcode seal or the like prior to the manufacturing process of the present invention. However, the present invention is not limited thereto, and a method of storing the serial number in the ROM-IC of the display device may be used.

The manufacturing year week data is composed of manufacturing year data of the west calendar and manufacturing week data (1 to 53 weeks, and 54 weeks for leap year), and at the time of the manufacturing history data recording process of the present invention, the timer of the inspection apparatus is The measured year week data is recorded in the storage medium of the display device.

Further, the specification data is a variety of display apparatuses from among various specification data such as data of the vertical and horizontal size of the screen of the display device, data of various recommended timings (horizontal display period, horizontal blanking, vertical display period, vertical blanking, etc.). (The model number of the display device managed by the display device manufacturer) is constituted by a combination of data that can be identified. The combination of the specification data can be changed in accordance with the request from the user, but it is preferable to comply with the standardized model code such as the E-EDID specification. This E-EDID specification is generally available as described above.

Further, the image test data is composed of various timing signals, image data, etc. for driving the display device, and a plurality of types of test data corresponding to each of the varieties having different screen sizes, operation timings, driving voltages, etc. are incorporated in the inspection device. Accumulated in a first memory unit such as a drive such as a hard disk. The operator of the inspection apparatus checks the type (model number) of the display apparatus to be inspected by a seal attached to the display apparatus, and inspects among the file names of the test data displayed on the monitor of the inspection apparatus (displayed as a file name in the same format as the model number). Select the file name that matches the model number.

If the file name of the test data is selected, the file name corresponding to the file name of the selected test data among the specification data stored in the first memory unit such as a hard disk drive included in the test apparatus, that is, the model number of the display device to be inspected. The specification data of the file name corresponding to 'is programmed to be selected automatically. The selected specification data is matched with the manufacturing number data contained in the second memory unit constituted by a storage device such as RAM (random access memory) already built in the inspection apparatus in the manufacturing history recording process and the yearly week data measured by the timer. It is sent to the interface unit and taken into the storage medium of the display device. The test data and the specification data may be stored in separate hard disk devices each built in the inspection apparatus.

In the image inspection step, the display device is driven by the selected test data, and the presence or absence of display defects is inspected by observing the lighting state using a visual field or a camera. The image data included in the test data can be arbitrary image data depending on the kind of the image pattern (full surface lighting, checkerboard display, etc.) used for inspection and the order of display. In addition, each hardware itself (control device, memory device, interface unit) constituting the inspection device system can use a configuration well known to those skilled in the art, and can take various configurations without departing from the scope of the present invention. .

Embodiment of the Invention

Hereinafter, the process of recording the image inspection and manufacturing history data of the liquid crystal display device 12 using the image inspection device 10 of one embodiment of the present invention will be described with reference to FIGS. In this embodiment, the manufacturing history data is constructed based on the E-EDID specification.

(1) Configuration of Liquid Crystal Display 12

1 is a block diagram showing the relationship between the image inspecting apparatus 10 and the liquid crystal display apparatus 12.

In this embodiment, the display device 12 to be inspected is constituted by a well-known TFT liquid crystal module. That is, as shown in Fig. 1, the driving circuit board 14 provided on the inner surface side of the liquid crystal cell 13 in which the liquid crystal is sealed between two glass substrates including the TFT array is provided with a scanning line driving circuit for driving a TFT array; A non-illustrated controller IC for distributing control signals such as image data and other clock signals input from the outside toward the peripheral drive circuit IC constituted by the signal line driver circuit, and a ROM for storing E-EDID information. 18 is also mounted. Then, a connector 16 having a plurality of terminals for inputting control signals from outside the controller IC and for inputting E-EDID information to the ROM 18 is provided. Moreover, the bar code seal 20 which shows the manufacture number of this liquid crystal display device 12 is affixed on the inner surface side of a liquid crystal display device.

(2) Configuration of Image Inspection Apparatus 10

The image inspection device 10 outputs test data including image data for image inspection to the liquid crystal display device 12, and records, reads and confirms these E-EDID information prior to the image inspection. The image inspection is performed continuously with the processing of the E-EDID information. The image inspection apparatus 10 mainly comprises a computer, and specifically includes a CPU 25 which is a control device and a timer 22 for measuring the current year, month, date, time, and week.

In addition, test data for performing image inspection corresponding to each type of liquid crystal display device 12 is stored in the first hard disk drive 26 that is constituted by a hard disk, and corresponds one-to-one to this test data. One E-EDID information is recorded in the second hard disk drive 28. This E-EDID information is recorded in the file format of a predetermined format (for example, Excel (registered trademark)).

In addition, the image inspection apparatus is provided with an interface unit (not shown) for outputting the inspection data or the E-EDID information accumulated in the storage unit toward the connector cable connected to the connector 16 of the liquid crystal display device 12. . This interface unit can use a well-known thing as a hardware structure of a computer.

When the test data is selected, the E-EDID information corresponding to the selected test data is called. Each test data is provided with an E-EDID flag for determining whether the E-EDID information is required or not. When this E-EDID flag is ON, the E-EDID information is called from the second hard disk drive 28.

This is because there is a case where there is a request for storing the E-EDID information in the display device by the user, and there is a case in which the E-EDID recording is required or unnecessary at the time of inputting test data for coping with both. Therefore, as described later, the display device with the flag OFF is not written with E-EDID information, but by performing the direct inspection process, the process can be shortened to improve production efficiency.

Moreover, the operation BOX 24 for an inspector to operate is connected, and the barcode reader 30 is connected. The operation box 24 is provided with a touch panel using a liquid crystal display, and is displayed in the same format as the model number of the display device (e.g., Δ ×××× (Δ is an alphabet, × is an integer from 0 to 9)). From the test data names, select a file whose name matches the model number of the display device to be inspected.

(3) Contents of E-EDID Information

Subsequently, manufacturing history data defined in the E-EDID specification will be described based on FIGS. 4 and 5.

The E-EDID information is composed of 128 bytes of data whose addresses are from 00 to 127, and manufacturing history data relating to the liquid crystal display device 12 is recorded in each address.

For example, the manufacturing stock is recorded in the address 16, the manufacturing year is recorded in the address 17, and the maximum horizontal display size and the maximum vertical display size are recorded in the addresses 21 and 22. It is. In the address 127, a check sum made by adding all the data at addresses 00 to 126 is recorded.

This check sum is for determining whether the E-EDID information is normal or abnormal, and is standardized by the E-EDID specification. If the lower two rows of the Check Sum data formed by adding all the data at addresses 126 to 126 are 00, it is normal.

(4) process of recording image inspection and E-EDID information

Hereinafter, the process of recording the image inspection and the E-EDID information in the liquid crystal display device 12 will be described based on the flowcharts of FIGS. 2 and 3.

This process is located in the final process of the liquid crystal display device 12, and the liquid crystal display device 12 is a process performed in the state assembled together. First, the connector cable of the inspection apparatus 10 is connected to the connector 16 of the liquid crystal display device 12.

First, the E-EDID information is checked prior to the image inspection.

In step 1, it is determined whether or not E-EDID information is changed in the liquid crystal display device 12 as a target. In other words, when the E-EDID information is not recorded in the liquid crystal display device 12, the E-EDID information is newly recorded. If the E-EDID information is already recorded, the E-EDID information is overwritten. Determine whether it is good. As the state where the E-EDID information has already been recorded, the liquid crystal display device 12 in the case where the image inspection process is performed once, fails to be adjusted, and the image inspection is performed again, corresponds.

If the E-EDID information may be changed, the process proceeds to step 2, and if the change is prohibited, the process proceeds to step 3.

Since the E-EDID information may be changed in step 2, the process proceeds to step 4 in which test data for image inspection according to the type of the liquid crystal display device 12 is selected.

In step 3, since the change of the E-EDID information is prohibited, the LCD 12 is set to the read check mode (READCHEK mode) in the utility menu. This read check mode is a mode for determining whether the E-EDID information already recorded is normal or abnormal, and is performed in a later step.

In step 4, it is determined whether the E-EDID flag is ON or OFF in the test data concerning the image inspection called from the image inspection apparatus 10. That is, when the E-EDID flag is OFF, the inspection process is performed without recording the E-EDID information. On the other hand, if the E-EDID flag is ON, the process proceeds to step 5.

In step 5, it is determined whether the E-EDID information corresponding to the test data exists in the second hard disk drive 28. Similar to the test data, this E-EDID information is stored in a file name having the same format as that of the display device model number (e.g., Δ ×××× (Δ is an alphabet, × is an integer from 0 to 9)). E-EDID information is identified by different identifiers (.edi, etc.). The inspection apparatus is programmed to retrieve the E-EDID information of the file name that matches the file name of the test data. If E-EDID information is not recorded in the second hard disk drive 28, the operation BOX 24 displays an error display and ends. If there is E-EDID information, the flow proceeds to step 6.

In step 6, T, test data is read from the first hard disk drive 26 of the image inspection apparatus 10 to prepare for image inspection. Then, the serial number is read by the barcode reader 30.

In step 7, the barcode reader 30 on the inner surface side of the liquid crystal display device 10 is read by the barcode reader 30, and the serial number is input to the image inspection apparatus 10, and the image inspection apparatus 10 is read. The second storage unit (not shown) constitutes a storage device such as a built-in RAM.

In step 8, it is determined whether the lower five rows of the read serial number are numeric, and if not, the flow returns to step 6 to instruct the reading of the serial number again. This determination is made for instructing reading once again when a plurality of barcodes for inputting information other than the serial number are attached to the inner surface side of the liquid crystal display device 10. Proceed to step 9 if the lower five rows of the manufacturing number are numbers.

In step 9, it is determined whether the serial number has been read within the past day. If the same serial number, go to step 10. In case of another serial number, the process proceeds to step 12.

In step 10, since it is the same as the serial number read out in the past 1 day, the lamp of the operation box 24 flashes to prompt the inspector, and if the inspector approves it in step 11, the cursor key of the operation box 24 is used. Is pressed to proceed to step 12. If the cursor key is not pressed, the process returns to step 6 to read the manufacturing number again.

In step 12, the test start key of the operation BOX 24 for starting the image inspection is input.

In step 13, it is determined whether the mode is in the read check mode. In the read check mode, it is necessary to determine whether or not the E-EDID information recorded in the ROM 18 of the liquid crystal display device 12 is normal.

In step 14, the E-EDID information recorded from the ROM 18 of the liquid crystal display 12 is read out, and in step 15, the check sum of the read E-EDID information is 0 (i.e., normal). Judge. If yes, proceed to step 19. If it is abnormal, the E-EDID information needs to be recorded once again, and the flow proceeds to step 16.

In step 16, the E-EDID information is sent out from the interface of the inspection apparatus, and the E-EDID information is recorded in the ROM 18 of the liquid crystal display 12. The recorded E-EDID information is E-EDID information corresponding to the test data. The manufacturing number records the manufacturing number read from the barcode reader 30, and the manufacturing year week is the timer 22 of the image inspection apparatus 10. Records the current year week that is being measured in real time.

In step 17, the image inspection apparatus 10 reads back the recorded E-EDID information, and checks in step 18 whether the read-out E-EDID information is normal or abnormal. For this reason, it is determined whether the read Check Sum is equal to the recorded Check Sum or whether the Check Sum is zero. When the Check Sum is the same or 0, it is determined that the E-EDID information is recorded normally, and the flow proceeds to step 19. Otherwise, the error is indicated and the test is finished.

In step 19, the manufacturing year week of the E-EDID information just read is displayed in the operation 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 of the inspection apparatus to the liquid crystal display device 12, the liquid crystal display device is turned on, and the presence or absence of display defects is checked using a visual field or a camera.

In this way, since the recording of the E-EDID information and the image inspection are carried out continuously using the same apparatus, the work process can be simplified.

In addition, if the E-EDID information is recorded, and if it is confirmed that it is normally recorded, it is impossible to proceed to the next step. Therefore, the function of preventing the forgetting and checking the recording of the E-EDID information can be given by the program control.

In addition, since the E-EDID information is recorded after inputting the serial number into the barcode reader 30, and a confirmation function is provided, an incorrect serial number or the like is not entered.

In addition, even in the liquid crystal display device 12 in which overwriting of the E-EDID information is prohibited, it is possible to determine whether the E-EDID information recorded in the read check mode is normal or abnormal.

In the above embodiment, the liquid crystal display device has been described, but instead of the organic EL display device or the CRT display device of the CRT, the E-EDID information can be recorded in succession with the image inspection process.

Moreover, the various hardware which comprises an image inspection apparatus can use the well-known thing as a computer system, and various changes are possible in the range which does not deviate from the well-known of this invention. For example, the first memory unit and the second memory unit may be configured as a single hard disk drive device. In addition, a hard disk drive device and a storage device having different functions such as RAM can be used in combination as appropriate.

As described above, according to the present invention, the E-EDID information can be recorded on the display device in succession to the image inspection, the work process can be simplified, and the miss can be controlled in the recording process.

Claims (4)

In the manufacturing method of the display device for recording the manufacturing history data including the manufacturing number data of the display device, the manufacturing year week data and the specification data for identifying the varieties of the display device on a recording medium provided in the display device, , A first memory unit in which a plurality of image test data corresponding to each type of display device and the specification data corresponding to each of the plurality of image test data are accumulated, a second memory unit storing the serial number, and yearly data The display unit having a timer for measuring the number of times, an interface unit connected to the display device, and a control unit for transmitting the data accumulated in the first and second memory units and the yearly week data to the interface. Connecting the apparatus; A test data selection step of selecting image test data adapted to the display device from among the plurality of image test data accumulated in the first memory; A manufacturing number data reading step of inputting the manufacturing number data given to the display device into the image inspection apparatus and storing the manufacturing number data in the second memory unit; Among the specification data accumulated in the first memory unit, the specification data corresponding to the image test data selected in the test data selection process, the production number stored in the second memory unit in the manufacturing number reading process, A manufacturing history data recording process of recording current year-week data measured by the timer on the recording medium through the interface unit; And And an image inspection step of sending out the image test data selected in the test data selection step to the display device via the interface unit and performing a lighting test of the display device following the manufacturing history data recording step. Method for manufacturing a display device. The method of claim 1, The image test data includes essential part discrimination data of the manufacturing history data, and when the main part discrimination data of the image test data selected in the test data selection process is data indicating manufacturing history data unnecessary, the production number data A manufacturing method of a display device, characterized in that a reading step and a manufacturing history data writing step are omitted. The method of claim 1, A detection step of detecting the presence or absence of the manufacturing history data on the recording medium before the test data selection step; A manufacturing history data reading step of reading the manufacturing history data detected by the detecting step and storing it in the second storage unit; A determination step of determining whether or not the production history data is determined based on the total value of the sum of the respective specification data included in the production history data stored in the second storage unit; And If it is determined that the manufacturing history data is abnormal, the recording process is continued. If it is determined that the manufacturing history data is normal, the timer measures the storage medium of the display device in place of the recording process. A method of manufacturing a display device, characterized by overwriting the current week of manufacture. A first memory unit in which a plurality of image test data corresponding to each type of display device and the display size data corresponding to each of the plurality of image test data are accumulated, a second memory unit storing the serial number, and yearly weeks And a timer for measuring data, an interface unit connected to the display device, and a control unit for transmitting the data accumulated in the first and second memory units and the yearly week data to the interface. Manufacturing apparatus for display device.