Download (12) United States Patent

US008421942B2
(12) United States Patent
(10) Patent N0.:
(45) Date of Patent:
Tsubata
2006/0145981 Al
2006/0208984 Al
(54) ACTIVE MATRIX SUBSTRATE, LIQUID
CRYSTAL PANEL, LIQUID CRYSTAL
DISPLAY DEVICE, LIQUID CRYSTAL
Apr. 16, 2013
7/2006 Lee et al.
9/2006 Kim et a1.
FOREIGN PATENT DOCUMENTS
DISPLAY UNIT, AND TELEVISION
RECEIVER
(75) Inventor:
US 8,421,942 B2
Toshihide Tsubata, Osaka (JP)
(73) Assignee: Sharp Kabushiki Kaisha, Osaka (JP)
JP
JP
JP
JP
7-092489
2006-039290
2006-506683
2006-139288
4/1995
2/2006
2/2006
6/2006
OTHER PUBLICATIONS
(*)
Notice:
Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
U.S.C. 154(b) by 379 days.
International Search Report for PCT/JP2009/050881, mailed Apr. 7,
2009.
(21) Appl. No.:
12/933,775
Huang,Yi-Pai et al., “18.3: Additional Refresh Technology (ART) of
Advanced-MVA(AMVA) Mode for High Quality LCDs”, SID 07
Digest, (2007), pp. 1010-1013.
(22)
PCT Filed:
Jan. 21, 2009
Primary Examiner * Phu Vu
(86)
PCT No.:
PCT/JP2009/050881
§ 371 (0X1)’
(2), (4) Date:
Sep. 21, 2010
(87)
(74) Attorney, Agent, or Firm * Nixon & Vanderhye, PC.
(57)
electrodes in a pixel region and a liquid crystal display device
(pixel division mode) using the same. Proposed is a con?gu
ration of the liquid crystal display device of the capacitor
coupled pixel division mode Which hardly causes reduction in
PCT Pub. No.: WO2009/130922
PCT Pub. Date: Oct. 29, 2009
(65)
(30)
(52)
Int. Cl.
G02F 1/136
US. Cl.
USPC
(58)
active matrix substrate includes: a data signal line (15x);
Jan. 27, 2011
scanning signal lines (1611 and 16b); a transistor (12a) con
nected to the data signal line (15x) and scanning signal line
(1611); a transistor (12b) connected to the data signal line (15x)
Foreign Application Priority Data
Apr. 23, 2008
(51)
display quality due to image-sticking of sub-pixels. The
Prior Publication Data
US 2011/0019114A1
ABSTRACT
Provided are an active matrix substrate including plural pixel
(JP) ............................... .. 2008-113105
(2006.01)
............................................. .. 349/43; 349/54
and scanning signal line (16b); and pixel electrodes (17a and
17b) provided in a pixel region (101), the pixel electrode
(1711) being connected to the data signal line (15x) via the
transistor (12a), the pixel electrode (17b) being connected to
the pixel electrode (1711) via a capacitor and the data signal
line (15x) via the transistor (12b), and the transistors (12a and
(12b) have identical W/L ratios of channels (each ratio of
Field of Classi?cation Search .................. .. 349/43,
Width W to length L of channel). The present invention can be
349/ 48
con?gured With identical channel sizes Without adjusting
See application ?le for complete search history.
W/ L ratios of channels of the transistors unlike a conventional
References Cited
due to variation in characteristics of transistors can be sup
(56)
U.S. PATENT DOCUMENTS
2006/0023137 A1
2/2006 Kamada et a1.
con?guration. Accordingly, deterioration of display quality
pressed.
38 Claims, 47 Drawing Sheets
US. Patent
FIG.
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Sheet 1 0147
US 8,421,942 B2
1
15):
16c
-----------------------------|
US. Patent
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FIG.
Sheet 2 0m
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2
15x
15X
.\
160;“
100
L_----- 103
n
HO
_
Ii
Tr
||Il.._| _ :4
L u
E
..
15d———'
A.
l
v.lI.
US. Patent
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F I G.
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Sheet 3 0f 47
3
160/"
‘:00
----_- 103
17c
17c
17d
17::
18y’E
16d?’
5
1
I: J“
Li
F 12
104
17A
1 78
I
12b/Vr
1
125
US. Patent
211 16a/
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/
27a
/
77a
Sheet 4 0m
22
/
18x
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/
1
/
7"’
/
16b
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FIG.
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Sheet 5 0m
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6
160/‘
10s
r.
////I
125
104
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FIG.
7
FIG.
8
Sheet 6 0m
28
xv
40
A
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Sheet 7 0m
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FIG.
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Sheet 8 0m
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10
15x
15X
12G
. l 7. Nb
10s
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Sheet 9 0m
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FIG.11
15x
15X
120
12C
10s
27b
88 12B 98
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FIG.
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12
Sheet 10 M47
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FIG.
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Sheet 12 0147
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‘14
60E
GSP GCK
053;
OEX
> Go (160)
> Gd (160])
P Ga (1 6a)
a
66 e
a
b
n
..
I
I> Ge (1 6e)
US. Patent
FIG.
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Sheet 13 M47
US 8,421,942 B2
15
GSP
GCK
OEX
UEy
LLL1 ILLLLLI
LLLLLLLLLLLLLjfL
FIHTJTFH‘[Ifrmr‘rjn-nmhf
F“,|_
US. Patent
FIG.
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16
Sheet 14 (447
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US. Patent
F I G.
Sv (15x
SV(1
G0 (160
Gd (1
Ga (16a
Gb (16b
Ge(16e
Gf(16
VC(17
VD(17D
Va (17
Vb (1 711
Va (11a
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1 9
Sheet 17 0147
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F I G.
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Sheet 18 M47
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2 O
6)D
60E
OEyZ OEyi
Dix
US. Patent
FIG.
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21
Sheet 19 0147
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