KR100977865B1 - Testing method by using brightness variation of organic light-emitting diode display - Google Patents

Testing method by using brightness variation of organic light-emitting diode display Download PDF

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KR100977865B1
KR100977865B1 KR1020080069430A KR20080069430A KR100977865B1 KR 100977865 B1 KR100977865 B1 KR 100977865B1 KR 1020080069430 A KR1020080069430 A KR 1020080069430A KR 20080069430 A KR20080069430 A KR 20080069430A KR 100977865 B1 KR100977865 B1 KR 100977865B1
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박경석
최상관
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금오공과대학교 산학협력단
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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
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    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
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Abstract

본 발명은 유기발광다이오드(OLED: ORGANIC LIGHT EMITTING DIODE) 디스플레이의 밝기편차를 이용한 검사방법에 관한 것으로, 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 유기발광다이오드 디스플레이를 한 줄씩 스캔하여 라인별 총 백그라운드 밝기를 구하고, 마지막에 라인별 백그라운드 평균밝기를 구한 후,The present invention relates to an inspection method using brightness deviation of an organic light emitting diode (OLED) display, and turns off all red, green and blue (RGB) pixels, and scans the organic light emitting diode display line by line. Find the total background brightness, and finally the background average brightness per line,

유기발광다이오드 디스플레이를 적색.녹색.청색(R.G.B) 색상별로 점등하여 스캔하면 이미지는 화소별로 밝기차를 가지며, 라인별 화소 밝기를 모두 합하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 픽셀 밝기가 되며, 라인별 픽셀 밝기를 모두 합하여 라인 수로 나누어 색상 평균밝기를 구하고, When the organic light emitting diode display is scanned by red, green, and blue (RGB) colors, the image has a brightness difference for each pixel, and the total brightness of each line is obtained by adding the pixel brightness of each line, and the background of each line is calculated from the total brightness of each line. Subtract the average brightness to get pixel brightness per line, add the pixel brightness per line and divide by the number of lines to get the color average brightness,

적색.녹색.청색(R.G.B) 라인별 픽셀 밝기와 색상 평균발기를 적색.녹색.청색(R.G.B) 라인별 표준 픽셀 밝기와 색상별 표준평균밝기를 비교하여, 3가지 색상 중에서 결함이 발생한 색과 라인을 신속하게 판별되며, 전압(Vcc)을 다르게 하여 전압 변화에 따른 라인별 픽셀 밝기와 색상별 평균밝기를 구하여 라인별 표준 픽셀 밝기와 색상별 표준평균밝기를 비교해 문제가 발생한 색상과 라인을 찾는 것을 목적으로 하는 유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법이다.Pixel brightness and color average erection by red, green and blue (RGB) lines Compared with standard pixel brightness by red and green and blue (RGB) lines and standard average brightness by color, the color and line where the defect occurs among the three colors To determine the pixel brightness per line and average brightness per color by changing the voltage (Vcc), and compare the standard pixel brightness per line and the standard average brightness per color to find the color and line where the problem occurred. It is a test method using the brightness deviation of the target organic light emitting diode display.

라인스캔카메라, 모션컨트롤보드, OLED, 유기발광다이오드, 유기발광다이오드검사 Line scan camera, motion control board, OLED, organic light emitting diode, organic light emitting diode inspection

Description

유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법{Testing method by using brightness variation of organic light-emitting diode display}Testing method by using brightness variation of organic light-emitting diode display}

본 발명은 유기발광다이오드 디스플레이(OLED: ORGANIC LIGHT EMITTING DIODE)의 유기발광다이오드 디스플레이를 구성하는 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 유기발광다이오드 디스플레이를 한 줄씩 라인 스캔 카메라로 스캔하여 라인별 총 백그라운드의 밝기를 구하고, 이를 합하여 얻은 총 백그라운드 밝기를 라인 수로 나누어 라인별 백그라운드 평균밝기를 구하며,The present invention is to turn off all the red, green and blue (RGB) pixels constituting the organic light emitting diode display (OLED: ORGANIC LIGHT EMITTING DIODE) of the organic light emitting diode display (OLED), and to scan the organic light emitting diode display line by line with a line scan camera Calculates the background brightness of each star, divides the total background brightness obtained by the number of lines, and obtains the background average brightness of each line.

적색.녹색.청색(R.G.B) 픽셀을 색상별로 점등하여 라인별 픽셀 밝기와 색상별 평균밝기를 구하여, 적색.녹색.청색(R.G.B) 라인별 표준 픽셀 밝기와 색상별 표준 평균밝기를 비교하여, 3가지 색상 중에서 결함이 발생한 색과 라인을 신속하게 판별하며,Red, green, and blue (RGB) pixels are lit by color to obtain pixel brightness per line and average brightness by color, and red and green and blue (RGB) lines are compared with standard pixel brightness by color and standard average brightness by color. Quickly identify faulty colors and lines from two colors,

전압(Vcc)을 다르게 하여 전압 변화에 따른 라인별 픽셀밝기와 색상별 평균 밝기를 비교해 문제가 발생한 색상과 라인을 찾는 것을 목적으로 하는 유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법에 관한 것이다.The present invention relates to an inspection method using brightness deviation of an organic light emitting diode display for the purpose of finding a color and a line in which a problem occurs by comparing pixel brightness of each line and average brightness of each color according to a voltage change.

유기발광다이오드 디스플레이는 발광층을 구성하고 있는 유기물질의 종류에 따라 빛의 색깔이 달라지게 되며, 적색.녹색.청색(R.G.B)을 내는 각각의 유기물질을 이용하여 Full Color를 나타내고 있다.In the organic light emitting diode display, the color of light varies according to the type of organic material constituting the light emitting layer, and displays full color by using each organic material emitting red, green, and blue (R.G.B).

종래에는 유기발광다이오드 디스플레이의 불량 검사방법은 대한민국 등록특허 10-0692808 "전계 발광 디스플레이의 전류편차검사방법"으로 적색.녹색.청색(R.G.B)의 상호 작용이나, 일정 범위의 전류 편차 분포에 의한 줄 얼룩 불량을 판별방법과,Conventionally, a defect inspection method of an organic light emitting diode display is Korean Patent Registration No. 10-0692808 "Method of current deviation of an electroluminescent display", which is a result of red, green, blue (RGB) interaction, or a range of current deviation distribution. Determination of stain defects,

대한민국 등록실용 20-0403628 "유기발광장치 검사시스템"과 같은 고배율 렌즈를 부착한 라인 스캔 카메라와 고배율 렌즈를 부착한 에어리어 스캔 카메라가 있어, 라인 스캔 카메라로 유기발광장치 전체를 스캔하여 결함 발생지점을 찾아내고, 에어리어 스캔 카메라로 결함 발생지점을 확대 촬영하여, 유기EL층과 TFT층의 틀어진 정도와 유입된 이물의 크기, 분포, 유입량 등을 검사하는 것이 알려져 있으나,There is a line scan camera with a high magnification lens such as the "Organic Light Emitting Device Inspection System", and the area scan camera with a high magnification lens. It is known to find the defects and magnify the point of occurrence of defects with an area scan camera, and to check the degree of distortion of the organic EL layer and the TFT layer and the size, distribution, and inflow of foreign matters.

유기발광다이오드 디스플레이의 적색.녹색.청색(R.G.B) 픽셀의 색상별 검사나 전압(Vcc) 변화에 다른 색상별 검사는 사람이 직접 현미경을 사용하여 육안으로 검사하고 있으며, 육안검사는 매우 주관적이어서 정확도가 떨어지고 검사 시간이 많이 소요되는 문제점이 있다.The color-specific inspection of red, green, and blue (RGB) pixels of the organic light-emitting diode display, or other color-specific inspections of voltage (Vcc) are visually inspected by humans using a microscope, and visual inspection is very subjective and accurate. Falls and there is a problem that takes a lot of inspection time.

본 발명은 유기발광다이오드 디스플레이를 점등지그에 삽입하고, 전원공급장치에서 공급된 전기를 On/Off 콘트롤러를 통해 적색.녹색.청색(R.G.B) 픽셀을 On/Off 시키고, 고배율 렌즈를 부착한 라인 스캔 카메라를 통해 획득된 이미지를 처리하는 영상획득보드와 라인 스캔 카메라 이동을 지시하는 모션컨트롤보드와 모션컨트롤보드의 명령을 X축 서보모터 또는 Y축 서보모터로 지시하는 서보드라이브를 구성하여,The present invention inserts an organic light emitting diode display into a lighting jig, turns the red, green, and blue (RGB) pixels on and off through an on / off controller from electricity supplied from a power supply, and scans a line with a high magnification lens. An image acquisition board that processes images acquired through the camera, a motion scan board that instructs the movement of the line scan camera, and a servo drive that instructs the motion control board commands to the X-axis servo motor or Y-axis servo motor.

라인스캔 카메라로 적색.녹색.청색(R.G.B) 색상별로 유기발광다이오드 디스플레이를 스캔하여 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상별 평균밝기를 구하고, 적색.녹색.청색(R.G.B) 라인별 표준 픽셀밝기와 색상별 표준평균밝기를 비교하여, 3가지 색상 중에서 결함이 발생한 색과 라인을 신속하게 판별하여, 문제가 있는 색상 생산라인을 신속하게 파악할 수 있게 한 것이다.Scan the organic light emitting diode display by red, green, and blue (RGB) color with the line scan camera to obtain pixel brightness per line and average brightness per red, green, blue (RGB) color, and red, green, blue (RGB) line By comparing the standard pixel brightness of each star and the standard average brightness of each color, it is possible to quickly identify the color and the line where the defect occurs among the three colors and to quickly identify the problem color production line.

유기발광다이오드 디스플레이를 구성하는 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 유기발광다이오드 디스플레이를 한 줄씩 라인 스캔 카메라로 스캔하여 라인별 백그라운드의 밝기를 구하고, 이를 합하여 얻은 백그라운드 총 밝기를 라인 수로 나누어 라인별 백그라운드 평균밝기를 구한 후,Turn off all the red, green, and blue (RGB) pixels that make up the organic light emitting diode display, and scan the organic light emitting diode display line by line with a line scan camera to obtain the brightness of each background line. Divide the background average brightness by line,

적색(Red) 픽셀만을 점등시킨 다음 라인 스캔 카메라로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 적색(Red) 픽셀 밝기가 되며, 라인별 적색(Red)픽셀 밝기를 모두 합하여 라인 수로 나누어 적색(Red) 색상 평균밝기를 구하는 단계와,Turn on only the red pixel, then scan line by line with the line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line to become the red pixel brightness per line, and red per line Adding the (Red) pixel brightness and dividing by the number of lines to obtain the red color average brightness,

녹색(Green) 픽셀만을 점등시킨 다음 라인 스캔 카메라로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 녹색(Green) 픽셀 밝기가 되며, 라인별 녹색(Green) 픽셀 밝기를 모두 합하여 라인 수로 나누어 녹색(Green) 색상 평균밝기를 구하는 단계와,Turn on only the green pixels, then scan line by line with the line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line, resulting in green pixel brightness per line, green per line Sum the brightness of all (Green) pixels and divide by the number of lines to get the average brightness of the green color,

청색(Blue) 픽셀만을 점등시킨 다음 라인 스캔 카메라로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 청색(Blue) 픽셀 밝기가 되며, 라인별 Blue 픽셀 밝기를 모두 합하여 라인 수로 나누어 청색(Blue) 색상 평균밝기를 구하는 단계와,Turn on only the blue pixels and scan line by line with the line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line to become the blue pixel brightness per line. Dividing all the pixel brightnesses by the number of lines to obtain the blue color average brightness,

상기 각각의 단계에서 얻어진 적색.녹색.청색(R.G.B) 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상별 평균 밝기를 구하여, 적색.녹색.청색(R.G.B) 각 색상들의 라인별 표준 픽셀 밝기와 색상별 표준평균밝기를 비교하여 벗어나는 색상과 문제가 있는 라인을 찾아내는 것이다.The average pixel brightness of each of the red, green, blue (RGB) lines and the average brightness of each of the red, green, blue (RGB) colors obtained in the above steps are obtained, and the standard pixel brightness of each of the red, green, blue (RGB) colors is obtained. By comparing the average brightness of each color with the average color, we find out the off-color and problematic lines.

유기발광다이오드 디스플레이(OLED)는 발광층을 구성하고 있는 유기물질이 어떤 것이냐에 따라 빛의 색깔이 달라지며, 적색.녹색.청색(R.G.B) 3가지 색을 이용하여 Full Color를 나타내게 되는데,OLED displays have different colors of light depending on which organic materials make up the light emitting layer, and display full color using three colors: red, green, and blue (R.G.B).

라인 스캔 카메라로 적색.녹색.청색(R.G.B) 색상별로 유기발광다이오드 디스플레이를 스캔하여 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상별 평균밝기를 구하여, 적색.녹색.청색(R.G.B) 라인별 표준 픽셀 밝기와 색상별 표준 평균밝기를 비교하여, 3가지 색상 중에서 결함이 발생한 색과 라인을 신속하게 판별하여, 문제가 있는 색상을 생산하는 생산라인을 신속하게 파악하여 원인을 제거하여 줌으로써 생산효율을 증대시키고 제품의 불량률을 낮추는 효과가 있다.Line Scan The camera scans the organic light emitting diode display by red, green and blue (RGB) color to obtain pixel brightness per line and average brightness per red, green and blue (RGB) color, and red, green and blue (RGB) lines. By comparing standard pixel brightness by color and standard average brightness by color, it is possible to quickly identify the color and line of defects among the three colors, and quickly identify the production line that produces the problem color and eliminate the cause It has the effect of increasing the efficiency and reducing the defective rate of the product.

상기 목적을 달성하기 위한 본 발명은 유기발광다이오드 디스플레이(OLED)를 삽입 고정하는 점등지그(20)와 전원공급장치에서 공급된 전기로 적색.녹색.청색(R.G.B) 픽셀을 On/Off시키는 On/Off 콘트롤러(30)를 이송대(40) 위에 설치하고, 이송대(40)를 X,Y 방향으로 구동시키는 X축 서보모터(50)와 Y축 서보모터(51)가 설치되며, 카메라 설치대(61)에 고배율의 렌즈를 부착한 라인 스캔 카메라(60)를 설치하여 라인 스캔 카메라(60)를 통해 획득된 이미지를 처리하는 영상획득보드(70)와 다음 라인을 읽을 수 있도록 지시하는 모션컨트롤보드(80)와 모션컨트롤보드(80)의 명령을 X축 서보모터(50) 또는 Y축 서보모터(51)로 움직임을 지시하는 서보드라이브(90)로 구성된 장치를 사용하여,In order to achieve the above object, the present invention provides a lighting jig 20 for inserting and fixing an organic light emitting diode display (OLED) and on / off red / green / blue (RGB) pixels by electricity supplied from a power supply. The Off controller 30 is installed on the feeder 40, and the X-axis servomotor 50 and the Y-axis servomotor 51 for driving the feeder 40 in the X and Y directions are installed. 61, a line scan camera 60 having a high magnification lens attached thereto, an image acquisition board 70 for processing an image acquired through the line scan camera 60, and a motion control board for instructing to read the next line. Using a device composed of a servo drive 90 for instructing movement of the 80 and the motion control board 80 to the X-axis servo motor 50 or the Y-axis servo motor 51,

유기발광다이오드 디스플레이(10)를 구성하는 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 유기발광다이오드 디스플레이(10)를 한 줄씩 라인 스캔 카메라(60)로 스캔하여 라인별 총 백그라운드의 밝기를 구하고, 이를 합하여 얻은 총 백그라운드 밝기를 라인 수로 나누어 라인별 백그라운드 평균밝기를 구한 후,Turn off all the red, green, and blue (RGB) pixels constituting the organic light emitting diode display 10, scan the organic light emitting diode display 10 line by line with a line scan camera 60 to obtain the total background brightness per line , Dividing the total background brightness obtained by the number of lines to find the background average brightness per line,

적색픽셀(11)만을 점등시킨 다음 라인 스캔 카메라로 유기발광다이오드 디스플레이를 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 적색(Red) 픽셀 밝기가 되며, 라인별 적색 픽셀 밝기를 모두 합하여 라인 수로 나누어 라인별 적색(Red) 색상 평균밝기를 구하는 단계와,Turn on only the red pixel (11), and then scan the organic light emitting diode display line by line with a line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line to increase the red pixel brightness per line. And dividing the red pixel brightness of each line by the number of lines to obtain the average red color brightness of each line.

녹색픽셀(12)만을 점등시킨 다음 라인 스캔 카메라로 유기발광다이오드 디스플레이를 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 녹색(Green) 픽셀 밝기가 되며, 라인별 녹색(Green) 픽셀 밝기를 모두 합하여 라인 수로 나누어 라인별 녹색(Green) 색상 평균밝기를 구하는 단계와,Turn on only the green pixel (12), and then scan the organic light emitting diode display line by line with a line scan camera to obtain the total brightness per line, and subtract the background average brightness per line from the total brightness per line to see the green pixel brightness per line. Calculating the average brightness of the green color by line by adding up the green pixel brightness of each line and dividing by the number of lines;

청색픽셀(13)만을 점등시킨 다음 라인 스캔 카메라로 유기발광다이오드 디스플레이를 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 청색(Blue) 픽셀 밝기가 되며, 라인별 청색(Blue) 픽셀 밝기를 모두 합하여 라인 수로 나누어 라인별 청색(Blue) 색상 평균밝기를 구하는 단계와, Turn on only the blue pixel (13), and then scan the organic light emitting diode display line by line with a line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line. And dividing the blue pixel brightness per line by the number of lines to obtain the average blue color brightness per line.

상기 각각의 단계에서 얻어진 적색.녹색.청색(R.G.B) 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상별 평균 밝기를 구하여, 적색.녹색.청색(R.G.B) 각 색상들의 라인별 표준 픽셀 밝기와 색상별 표준평균밝기를 비교하여 벗어나는 색상과 문제가 있는 라인을 찾을 수 있다.The average pixel brightness of each of the red, green, blue (RGB) lines and the average brightness of each of the red, green, blue (RGB) colors obtained in the above steps are obtained, and the standard pixel brightness of each of the red, green, blue (RGB) colors is obtained. By comparing the standard average brightness of each color with the color, you can find the off-color and problematic lines.

이하에서 본 발명의 구성을 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 개략적인 시스템구성을 나타낸 시스템구성도이며, 도 2는 본 발명의 디스플레이 On/Off 콘트롤러와 AM-OLED(ORGANIC LIGHT EMITTING DIODE)회로도로써 전원공급장치에서 공급된 전기로 R,G,B 색상별로 픽셀을 On/Off 하는 것을 나타낸 것이다.1 is a system configuration diagram showing a schematic system configuration of the present invention, Figure 2 is a display diagram of the present invention On / Off controller and AM-OLED (ORGANIC LIGHT EMITTING DIODE) circuit diagram of the electric furnace supplied from the power supply R, This shows the pixel on / off for each color of G and B.

도 3은 본 발명의 유기발광다이오드 디스플레이 검사 방법을 나타낸 순서도이며, 도 4는 도 3의 라인별 백그라운드 총 밝기와 라인별 백그라운드 평균밝기를 구하는 순서도 이다.3 is a flowchart illustrating a method of inspecting an organic light emitting diode display according to an embodiment of the present invention, and FIG. 4 is a flowchart of calculating a background total brightness and a background average brightness of each line of FIG. 3.

도 5는 도 3의 라인별 총 밝기와 라인별 픽셀 밝기와 색상 평균밝기를 구하는 순서도 이고,FIG. 5 is a flowchart for obtaining a total brightness per line, a pixel brightness per line, and a color average brightness in FIG. 3.

도 6은 적색.녹색.청색(R.G.B) 픽셀을 모두 OFF 시킨 다음 라인 스캔 카메라로 스캔한 이미지를 부분확대한 예시도로서, 적색.녹색.청색(R.G.B) 픽셀을 모두 OFF 한 후 라인별로 화소(62) 별 밝기를 모두 합하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 라인별 픽셀 밝기가 되며, 라인별 픽셀 밝기를 모두 합하여 라인 수로 나누면 라인별 색상 평균밝기가 된다.FIG. 6 is an enlarged view showing the image scanned by the line scan camera after turning off all the red, green and blue (RGB) pixels, and turning off all the red, green and blue (RGB) pixels. 62) The total brightness of each line is obtained by adding the brightness of each star. If the background average brightness of each line is subtracted from the total brightness of each line, it is the pixel brightness per line. If the sum of the pixel brightness of each line is divided by the number of lines, the color average brightness of each line is obtained. .

도 7은 적색(Red) 픽셀만을 점등시키고 라인 스캔 카메라로 스캔한 확대 예시도로서, 적색(Red) 픽셀 라인별 픽셀 밝기와 적색(Red) 색상 평균밝기를 얻을 수 있다.FIG. 7 is an enlarged exemplary view in which only a red pixel is turned on and scanned with a line scan camera, and pixel brightness and red color average brightness of each red pixel line may be obtained.

도 8은 본 발명의 실시를 위한 장치예시도로, 유기발광다이오드 디스플레이(OLED)를 점등지그에 삽입하고 On/Off 콘트롤러로 R,G,B 픽셀을 On/Off 시키며, 라인스캔카메라로 한 줄씩 촬영하고, X축-서보모터나 Y축-서보모터에 의해 이송대가 X축과 Y축으로 움직일 수 있게 한 구성을 나타낸 것이다.8 is an exemplary device for implementing the present invention. An organic light emitting diode display (OLED) is inserted into a lighting jig, and the R / G and B pixels are turned on / off with an on / off controller, and the line scan camera is taken line by line. In addition, the X-axis servo motor or Y-axis servo motor by the conveyer is shown a configuration that can move in the X-axis and Y-axis.

도 1은 본 발명의 개략적인 시스템구성도.1 is a schematic system configuration diagram of the present invention.

도 2는 본 발명의 디스플레이 ON/OFF 콘트롤러와 AM-OLED 회로도.2 is a display ON / OFF controller and AM-OLED circuit diagram of the present invention.

도 3은 본 발명의 유기발광다이오드 디스플레이 검사 방법을 나타낸 순서도.Figure 3 is a flow chart showing an organic light emitting diode display test method of the present invention.

도 4는 본 발명의 라인별 백그라운드 총 밝기와 픽셀라인별 평균밝기를 구하는 순서도.4 is a flow chart for calculating the background total brightness per line and the average brightness per pixel line of the present invention.

도 5는 본 발명의 라인별 총 밝기와 라인별 픽셀 밝기와 색상 평균밝기를 구하는 순서도.Figure 5 is a flow chart for obtaining the line-by-line total brightness, line-by-line pixel brightness and color average brightness of the present invention.

도 6은 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 라인스캔 카메라로 스캔한 이미지를 부분확대한 예시도.6 shows an enlarged view of an image scanned by a line scan camera with all of the red, green and blue (R.G.B) pixels turned off.

도 7은 적색(Red) 픽셀만을 점등시키고 라인 스캔 카메라로 스캔한 확대 예시도.Fig. 7 is an enlarged view of scanning with a line scan camera while lighting only red pixels.

도 8은 본 발명의 실시를 위한 장치예시도.8 is an exemplary view of an apparatus for practicing the present invention.

* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS

10 : 유기발광다이오드 디스플레이 11 : 적색픽셀10 organic light emitting diode display 11 red pixel

12 : 녹색픽셀 13 : 청색픽셀12: green pixel 13: blue pixel

20 : 점등지그 30 : On/Off 콘트롤러20: Lighting jig 30: On / Off controller

40 : 이송대 50 : X축 서보모터40: feeder 50: X axis servomotor

51 : Y축 서보모터 60 : 라인 스캔 카메라51: Y axis servo motor 60: Line scan camera

61 : 카메라 설치대 62 : 화소61: camera mount 62: pixels

70 : 영상획득보드 80 : 모션컨트롤보드70: image acquisition board 80: motion control board

90 : 서보드라이브90: Servo Drive

Claims (3)

유기발광다이오드 디스플레이(OLED)를 삽입 고정하는 점등지그(20)와 전원공급장치에서 공급된 전기로 적색.녹색.청색(R.G.B) 픽셀을 On/Off시키는 On/Off 콘트롤러(30)를 이송대(40) 위에 설치하고, 이송대(40)를 X,Y 방향으로 구동시키는 X축 서보모터(50)와 Y축 서보모터(51)가 설치되며, 카메라 설치대(61)에 고배율의 렌즈를 부착한 라인 스캔 카메라(60)를 설치하여 라인 스캔 카메라(60)를 통해 획득된 이미지를 처리하는 영상획득보드(70)와 다음 라인을 읽을 수 있도록 지시하는 모션컨트롤보드(80)와 모션컨트롤보드(80)의 명령을 X축 서보모터(50) 또는 Y축 서보모터(51)로 움직임을 지시하는 서보드라이브(90)로 구성된 장치를 사용하여,Transport jig 20 for inserting and fixing the organic light emitting diode display and on / off controller 30 for turning on / off the red, green and blue (RGB) pixels with electricity supplied from the power supply unit. 40), an X-axis servomotor 50 and a Y-axis servomotor 51 for driving the feed table 40 in the X and Y directions are installed, and a high magnification lens is attached to the camera mounting table 61. An image acquisition board 70 for processing an image acquired through the line scan camera 60 and a motion control board 80 and a motion control board 80 instructing to read the next line by installing a line scan camera 60. Command using the servo drive 90 to instruct movement to the X-axis servo motor 50 or the Y-axis servo motor 51, 유기발광다이오드 디스플레이(10)를 구성하는 적색.녹색.청색(R.G.B) 픽셀을 모두 끄고, 유기발광다이오드 디스플레이(10)를 한 줄씩 라인 스캔 카메라(60)로 스캔하여 라인별 총 백그라운드의 밝기를 구하고, 이를 합하여 얻은 총 백그라운드 밝기를 라인 수로 나누어 라인별 백그라운드 평균밝기를 구한 후,Turn off all the red, green, and blue (RGB) pixels constituting the organic light emitting diode display 10, scan the organic light emitting diode display 10 line by line with a line scan camera 60 to obtain the total background brightness per line , Dividing the total background brightness obtained by the number of lines to find the background average brightness per line, 적색픽셀(11)만을 점등시킨 다음 라인 스캔 카메라(60)로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 Red 픽셀 밝기가 되며, 적색(Red) 픽셀 밝기를 모두 합하여 라인 수로 나누어 적색(Red) 색상 평균밝기를 구하는 단계와,Turn on only the red pixel 11, and then scan line by line with the line scan camera 60 to obtain the total brightness per line, and subtract the background average brightness per line from the total brightness per line to become the red pixel brightness. Dividing all the brightness by the number of lines to obtain the average brightness of the red color; 녹색픽셀(12)만을 점등시킨 다음 라인 스캔 카메라로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 녹색(Green) 픽셀 밝기가 되며, 녹색(Green) 픽셀 밝기를 모두 합하여 라인 수로 나누어 녹색(Green) 색상 평균밝기를 구하는 단계와,Turn on only the green pixel (12), and then scan line by line with the line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line to become the green pixel brightness. Sum the brightness and divide by the number of lines to get the average green color brightness, 청색픽셀(13)만을 점등시킨 다음 라인 스캔 카메라로 한 줄씩 스캔하여 라인별 총 밝기를 구하고, 라인별 총 밝기에서 라인별 백그라운드 평균밝기를 빼면 청색(Blue) 색상 밝기가 되며, 청색(Blue) 색상 밝기를 모두 합하여 라인 수로 나누어 청색(Blue) 색상 평균밝기를 구하는 단계와,Turn on only the blue pixel (13), then scan line by line with the line scan camera to get the total brightness per line, and subtract the background average brightness per line from the total brightness per line to become blue color brightness, and blue color Dividing all the brightness by the number of lines to obtain the average brightness of the blue color; 상기 각각의 단계에서 얻어진 적색.녹색.청색(R.G.B) 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상 평균밝기를 구하여, 적색.녹색.청색(R.G.B) 각 색상들의 라인별 픽셀 표준밝기, 색상별 표준 평균밝기와 비교하여 벗어나는 색상과 문제가 있는 라인을 찾아내는 유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법.Pixel standard brightness of red, green, blue (RGB) line and red, green, blue (RGB) color average brightness obtained in each step are obtained, and the standard pixel brightness of each line of red, green, blue (RGB), Inspection method using brightness deviation of organic light emitting diode display that finds out color and problem line by comparing with standard average brightness by color. 제 1항에 있어서,The method of claim 1, 적색.녹색.청색(R.G.B) 라인별 픽셀 밝기와 적색.녹색.청색(R.G.B) 색상별 평균 밝기 외에도 라인별 총 밝기나 라인별 총 밝기를 모두 합한 전체밝기를 비교해서 표준에서 벗어나는 색상과 문제가 있는 라인을 찾아내는 유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법.In addition to the average brightness per red and green blue (RGB) color, and the overall brightness of both the total brightness per line or the total brightness per line in addition to the average brightness per color, there is a problem with colors and problems that deviate from the standard. An inspection method using the brightness deviation of an organic light emitting diode display to find a line. 제 1항에 있어서,The method of claim 1, 적색.녹색.청색(R.G.B) 라인별 밝기와 적색.녹색.청색(R.G.B) 색상별 평균밝기를 전압(VCC)을 다르게 하여 전압 변화에 따른 라인별 픽셀 밝기와 색상 평균밝기를 라인별 표준 픽셀 밝기와 색상별 표준 평균밝기와 비교해 문제가 발생한 색상과 문제가 발생한 라인을 찾는 유기발광다이오드 디스플레이의 밝기편차를 이용한 검사방법.Red, green, blue (RGB) line-by-line brightness and red, green, blue (RGB) color-specific average brightness by varying voltage (VCC) Test method using brightness deviation of organic light emitting diode display to find problem color and problem line compared with standard average brightness by color.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497625B (en) * 2012-01-13 2015-08-21 Etamax Co Ltd Method for displaying susceptor mapping images of light emitting diode wafers

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10983065B2 (en) 2012-08-08 2021-04-20 Healthy.Io Ltd. Method, apparatus and system for detecting and determining compromised reagent pads by quantifying color changes induced by exposure to a hostile environment
US9285323B2 (en) 2012-08-08 2016-03-15 Scanadu Incorporated Quantifying color changes of chemical test pads induced concentrations of biological analytes under different lighting conditions
KR102050365B1 (en) 2013-08-23 2020-01-09 삼성디스플레이 주식회사 Method of detecting fault in a organic light emitting display device and the organic lightemitting display device
KR20150051437A (en) 2013-11-04 2015-05-13 삼성디스플레이 주식회사 System and method for a luminance correction
US11030778B2 (en) 2014-03-31 2021-06-08 Healthy.Io Ltd. Methods and apparatus for enhancing color vision and quantifying color interpretation
CN103969567A (en) * 2014-04-22 2014-08-06 四川虹视显示技术有限公司 Method and device for detecting and analyzing defects of OLED device
US11087467B2 (en) 2014-05-12 2021-08-10 Healthy.Io Ltd. Systems and methods for urinalysis using a personal communications device
US10991096B2 (en) 2014-05-12 2021-04-27 Healthy.Io Ltd. Utilizing personal communications devices for medical testing
WO2016025935A2 (en) 2014-08-15 2016-02-18 Scanadu Incorporated Precision luxmeter methods for digital cameras to quantify colors in uncontrolled lighting environments
CN108281101A (en) * 2018-01-29 2018-07-13 业成科技（成都）有限公司 Colour gamut measurement system and method
US11250944B2 (en) 2019-01-02 2022-02-15 Healthy.Io Ltd. Uniquely coded color boards for analyzing images

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006266750A (en) 2005-03-22 2006-10-05 Seiko Epson Corp Method and device for defect inspection
KR20080021566A (en) * 2006-09-04 2008-03-07 산요덴키가부시키가이샤 Defect inspection method and defect correction method for electroluminescence display device, and manufacturing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006266750A (en) 2005-03-22 2006-10-05 Seiko Epson Corp Method and device for defect inspection
KR20080021566A (en) * 2006-09-04 2008-03-07 산요덴키가부시키가이샤 Defect inspection method and defect correction method for electroluminescence display device, and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497625B (en) * 2012-01-13 2015-08-21 Etamax Co Ltd Method for displaying susceptor mapping images of light emitting diode wafers

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