JP4679331B2 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP4679331B2 JP4679331B2 JP2005307300A JP2005307300A JP4679331B2 JP 4679331 B2 JP4679331 B2 JP 4679331B2 JP 2005307300 A JP2005307300 A JP 2005307300A JP 2005307300 A JP2005307300 A JP 2005307300A JP 4679331 B2 JP4679331 B2 JP 4679331B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- capacitor
- auxiliary
- capacitance
- adjustment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 41
- 239000003990 capacitor Substances 0.000 claims description 75
- 238000001514 detection method Methods 0.000 claims description 40
- 239000000758 substrate Substances 0.000 description 18
- 239000010408 film Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
ここで、Ctotalは、補助容量Ccs、液晶容量(液晶層の容量)Ccl、TFTの寄生容量Ctftを含む総容量であり、次式で示される。
式(1)のように電位変動ΔVが定まるため、検出された容量値Ccsが大きい場合には、調整回路は、補助容量22に接続された電源配線Yの電位振幅ΔVcsを小さくなる方向に調整することで輝度を高くする。また、検出された容量値Ccsが小さい場合には、図4の曲線L3に示すように輝度が高くなる方向にシフトするので、電位振幅ΔVcsを大きくなる方向に調整することで輝度を低くする。
2…表示部
3…駆動回路
4…検出用容量
5…検出回路
6…抵抗
21…スイッチ素子
22…補助容量
23…画素電極
24…液晶容量
25…対向電極
G…走査線
S…信号線
Y…電源配線
Claims (3)
- 複数の走査線と複数の信号線によって区分けされた区画毎にスイッチ素子、補助容量、画素電極を備えた表示部と、
前記補助容量と同一の層構造をもつ検出用容量と、
前記検出用容量の容量値を検出する検出回路と、
前記検出回路により検出された容量値に基づいて前記補助容量に接続された電源配線の電位振幅を調整する調整回路と、
を有することを特徴とする液晶表示装置。 - 前記調整回路は、予め定めておいた検出された容量値と補助容量の電位振幅の調整値との関係に基づいて調整を行うことを特徴とする請求項1記載の液晶表示装置。
- 前記関係は、線形であることを特徴とする請求項2記載の液晶表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005307300A JP4679331B2 (ja) | 2005-10-21 | 2005-10-21 | 液晶表示装置 |
US11/544,563 US7742015B2 (en) | 2005-10-21 | 2006-10-10 | Liquid crystal display device |
TW095138463A TW200728879A (en) | 2005-10-21 | 2006-10-18 | Liquid crystal display device |
KR1020060102197A KR100778620B1 (ko) | 2005-10-21 | 2006-10-20 | 액정 표시 장치 및 표시 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005307300A JP4679331B2 (ja) | 2005-10-21 | 2005-10-21 | 液晶表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007114577A JP2007114577A (ja) | 2007-05-10 |
JP4679331B2 true JP4679331B2 (ja) | 2011-04-27 |
Family
ID=38096805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005307300A Active JP4679331B2 (ja) | 2005-10-21 | 2005-10-21 | 液晶表示装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4679331B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018021154A1 (ja) * | 2016-07-27 | 2018-02-01 | シャープ株式会社 | 走査アンテナおよび走査アンテナの駆動方法ならびに液晶デバイス |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0422923A (ja) * | 1990-05-17 | 1992-01-27 | Sanyo Electric Co Ltd | 液晶表示装置 |
JP2001255851A (ja) * | 2000-03-09 | 2001-09-21 | Matsushita Electric Ind Co Ltd | 液晶表示装置 |
JP2003279929A (ja) * | 2002-03-25 | 2003-10-02 | Sharp Corp | 液晶表示装置の駆動方法及びその液晶表示装置 |
-
2005
- 2005-10-21 JP JP2005307300A patent/JP4679331B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0422923A (ja) * | 1990-05-17 | 1992-01-27 | Sanyo Electric Co Ltd | 液晶表示装置 |
JP2001255851A (ja) * | 2000-03-09 | 2001-09-21 | Matsushita Electric Ind Co Ltd | 液晶表示装置 |
JP2003279929A (ja) * | 2002-03-25 | 2003-10-02 | Sharp Corp | 液晶表示装置の駆動方法及びその液晶表示装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2007114577A (ja) | 2007-05-10 |
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