1

Flat-Plane Display Luminance and Color Uniformity Measurement by 2-Dimension CCD ArrayFu Xiong Chang2011/07/11

1

2

(Luminance)(Color)(Uniformity) 1.2.VESA FPDMISO (International Organization for Standardization)TCO (The Swedish Confederation for Professional Employees)SPWG (The Standard Panels Working Group)3.-3

VESA FPDM:Non-Uniformity % = 100% x [1- (Lmin / Lmax)]ISO:

Uniformity = (Lmax / Lmin)TCO

LuminanceVariation = Lmax/LminSPWG:

Non-Uniformity % = 100% x [1- (Lmin / Lmax)]4-BM-7A

123456789BM-7ABM-7Acolorimeters CCDPhotometer /ColorimeterCCDCCD5

CIE CCDCCD,LabVIEWCCD

5 6

1.CCD a. b. C. 2.CCD a. b.CCD(Flat-Field correction) c.

73CCD(Sony DXC-390)(NI PCI-1410) LabVIEW(Luminance)(Color)(Uniformity)

8CCD9

a.CCD10010%10b.CCD

base line11

c.CCD

12CCD13

14a.3CCD

Transfer matrix=

15b.CCD(Flat-Field correction)cos4E3= cos4 *E1CCDdA0dA2dA1dA301E1E316Sony DXC-390 3CCD camera

CCD

17

CCDSony DXC-390

3CCD camera

18CCD

19

20

21Gi,j = i,j L +i,j LGi,j i,j i,j (least square method)(i,ji,j) Gi,j - i,j L -i,j=

(curve fitting)CCD22Gi,j = q L +qBefore calibrationAfter calibration

23

524

25

26

12%27 2%

28

L = i,j Gi,j +i,j LGi,ji,j i,j

(least square method)(i,ji,j) c.(XYZ)(XYZ)29

CCDSony DXC-390

3CCD camera

Distance =500mm (nits)30A500mmF5.6CCD1/10000sec

CCD31BM-7ASONY DXC-390%XYZXYZXYZ17025626320866934616320481.3%1.5%1.8%28178728923788129725023530.6%0.5%1.0%39689865927969614860428810.7%0.6%-3.0%411242101003306112081005833570.3%0.4%-1.5%51136010172327211425102863372-0.5%-1.1%-3.0%61317811856397813200118444069-0.1%0.1%-2.3%71543013910464915554140214757-0.8%-0.8%-2.3%819472176545851194301761359350.2%0.2%-1.4%922980208806857229792092169560.0%-0.2%-1.4%1026590242768084262392402880671.3%1.0%0.2% 3%

32CCD(Luminance) (1)(Working distance) (2)(Focal length) (3)(Aperture) (4)CCD (5)CCD(CCD shutter) (6)=f[ (2),(3),(4),(5),(6)]33

34

VESA 9

35

98.2%936

BM-7ASONY DXC-390%XYZXYZXYZ7025626320866934616320481.3%1.5%1.8%A37

BM-7ASONY DXC-390%XYZXYZXYZ9276109509785100131004493478%11%-5%38

BM-7ASONY DXC-390%XYZXYZXYZ6941149405617188136195774%-9%3%39

BM-7ASONY DXC-390%XYZXYZXYZ18762382992020082235109807%-6%11%40

BM-7ASONY DXC-390%XYZXYZXYZ40521454503240190668-20%31%37%41

=42CCD3CCDCCD(Flat-Field correction)(XYZ)(XYZ)CCD-98%-A3%

43AA-

CIE XYZ44