JP2010271724A - タッチパネル式液晶表示器 - Google Patents
タッチパネル式液晶表示器 Download PDFInfo
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- JP2010271724A JP2010271724A JP2010136678A JP2010136678A JP2010271724A JP 2010271724 A JP2010271724 A JP 2010271724A JP 2010136678 A JP2010136678 A JP 2010136678A JP 2010136678 A JP2010136678 A JP 2010136678A JP 2010271724 A JP2010271724 A JP 2010271724A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0447—Position sensing using the local deformation of sensor cells
Abstract
【解決手段】データ信号電圧を生成するソースドライバー104と、スキャン信号を生成するゲートドライバー102と、マトリックス型に配列される複数の画素ユニット200と、複数の検知回路210と、複数の検知回路210に出力された動的電流を比較してその発信元を判断する判断ユニット108とを含む液晶表示器において、該複数の画素ユニット200はいずれも、データ信号電圧を導通させるスイッチトランジスター202と、データ信号電圧に基づいて複数の液晶分子の配列を調整する液晶容量とを含み、該複数の検知回路210はいずれも、固定電圧端による所定の固定電圧を導通させる第一トランジスター211と、動的電圧を生成する感知ユニットと、動的電圧に基づいて動的電流を生成する第二トランジスター212と、動的電流を導通させる第三トランジスターと213を含む。
【選択図】 図2
Description
以下、この発明について具体的に説明する。
[式1]
[式2]
タッチ式容量Cvの容量値はそれに加える外力の大きさによって変化し、検知回路210の第二トランジスター212の出力電流Idsも容量値によって変化する。したがって、積分回路1082の出力Voutは外力の大きさによって決められる。積分回路1082を決定ユニット1086に接続すれば、決定ユニット1086は各積分回路1082の出力電圧Voutに基づき、押圧点の座標と加えられた外力の大きさを判断できる。
102 ゲートドライバー
104 ソースドライバー
106 固定電圧ユニット
108 判断ユニット
110 液晶表示パネル
200 画素ユニット
202 スイッチトランジスター
204 保存容量
206 液晶容量
210 検知回路
211、311 第一トランジスター
212、312 第二トランジスター
213 第三トランジスター
250、252 導電ガラス基板
410 検知回路
411 トランジスター
412、1082 積分回路
414 演算増幅器
416、1088 スイッチユニット
421、422 入力端
423 出力端
1084 ADC
1086 決定ユニット
Bn、Rn 伝送線
Cv タッチ式容量
Dn データライン
Gn スキャンライン
Vcom 共通電圧
Claims (6)
- データ信号電圧を生成するソースドライバーと、スキャン信号を生成するゲートドライバーと、マトリックス型に配列される複数の画素ユニットと、複数の画素ユニットにそれぞれ電気的に接続される複数の検知回路と、複数の検知回路に出力された判断電圧信号を比較して複数の検知回路のうち1つの位置を判断する決定ユニットとを含む液晶表示器において、該複数の画素ユニットはいずれも、スキャン信号によりオンにされるときにデータ信号電圧を導通させるスイッチトランジスターと、データ信号電圧に基づいて複数の液晶分子の配列を調整する液晶容量とを含み、該複数の検知回路はいずれも、動的電圧を生成する感知ユニットと、制御信号電圧によりオンにされるときに動的電圧に基づいて動的電流を生成するトランジスターと、動的電流を判断電圧信号に変換する変換回路とを含むことを特徴とする液晶表示器。
- 前記感知ユニットは可変容量であることを特徴とする請求項1記載の液晶表示器。
- 前記可変容量はその容量値の変化に基づき、対応する動的電圧を生成することを特徴とする請求項2記載の液晶表示器。
- 前記可変容量は両端がトランジスターと共通電圧端にそれぞれ接続されることを特徴とする請求項3記載の液晶表示器。
- 前記トランジスターの制御端はスイッチトランジスターの制御端に結合されることを特徴とする請求項1記載の液晶表示器。
- 前記変換回路は、固定電圧端に結合される第一入力端、第二入力端及び出力端を有する演算増幅器と、該第二入力端と出力端の間に結合されるスイッチユニットと、トランジスターに結合され、スイッチユニットがオンにされるときに動的電流を判断電圧信号に変換する帰還容量とを含むことを特徴とする請求項1記載の液晶表示器。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW095132505A TWI354962B (en) | 2006-09-01 | 2006-09-01 | Liquid crystal display with a liquid crystal touch |
TW095132505 | 2006-09-01 |
Related Parent Applications (1)
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JP2006310736A Division JP4560031B2 (ja) | 2006-09-01 | 2006-11-16 | タッチパネル式液晶表示器 |
Publications (2)
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JP2010271724A true JP2010271724A (ja) | 2010-12-02 |
JP5379080B2 JP5379080B2 (ja) | 2013-12-25 |
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JP2006310736A Active JP4560031B2 (ja) | 2006-09-01 | 2006-11-16 | タッチパネル式液晶表示器 |
JP2010136677A Active JP5483284B2 (ja) | 2006-09-01 | 2010-06-15 | タッチパネル式液晶表示器 |
JP2010136678A Active JP5379080B2 (ja) | 2006-09-01 | 2010-06-15 | タッチパネル式液晶表示器 |
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JP2006310736A Active JP4560031B2 (ja) | 2006-09-01 | 2006-11-16 | タッチパネル式液晶表示器 |
JP2010136677A Active JP5483284B2 (ja) | 2006-09-01 | 2010-06-15 | タッチパネル式液晶表示器 |
Country Status (3)
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US (1) | US7737940B2 (ja) |
JP (3) | JP4560031B2 (ja) |
TW (1) | TWI354962B (ja) |
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JP5379080B2 (ja) | 2013-12-25 |
JP5483284B2 (ja) | 2014-05-07 |
US20080055267A1 (en) | 2008-03-06 |
JP2008058925A (ja) | 2008-03-13 |
US7737940B2 (en) | 2010-06-15 |
TWI354962B (en) | 2011-12-21 |
TW200813919A (en) | 2008-03-16 |
JP2010256918A (ja) | 2010-11-11 |
JP4560031B2 (ja) | 2010-10-13 |
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