JP5403815B2 - 入力装置、およびそれを備えた表示装置 - Google Patents
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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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
-
- 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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- 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
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Laminated Bodies (AREA)
Description
下する。入力処理部の端子数が増加するため回路面積も増え、コスト増加が懸念される。一方、先端が導電性ゴム製のスタイラスを使用した場合、電極数を同等とすると接触面で直径6mm程度の形状が必要なため、文字入力の違和感を伴う。
Czya>Czy ・・・式(2)
Z電極ZPはフローティングであるため、タッチ操作有無の状態での合成容量は、図4(b)(c)に示すように直列容量と考えられる。したがって、タッチ操作の有無で生じる隣接するX電極とY電極間の容量変化ΔCは、下記の式で表される。
容量検出部102は、各電極の容量、或いは式(3)で表されるようなタッチ操作有無による容量変化を検出する。制御演算部103は、容量検出部で得られる各電極の容量、或いは容量変化などを信号成分として、タッチ操作時の座標を計算する。
本実施例のタッチパネルの構成は、第1の透明基板1上に透明導電膜XP、透明な第1の絶縁膜2、透明導電膜YP、透明な第2の絶縁膜3、Z電極との間隔を保つスペーサ4、Z電極ZP、非導電層8、透明弾性層5を順次積層し、その上に第2の透明基板6を積層した表示装置である。
YP 容量検出用のY電極(透明導電膜)
ZP Z電極
1 第1の透明基板
2 第1の透明絶縁膜
3 第2の透明絶縁膜
4 スペーサ
5 透明弾性層
6 第2の透明基板
7 接着層
8 非導電層
9 空気層
10 反射防止膜
11 接着層
12 空間(空気層)
101 タッチパネル
102 容量検出部
103 制御演算部
104 システム(CPU)
105 表示制御回路
106 表示部
Cxz、Cxza X電極とZ電極との間の容量成分
Cyz、Cyza Y電極とZ電極との間の容量成分
Claims (10)
- X位置座標を検出する複数のX座標検出電極と、Y位置座標を検出する複数のY座標検出電極と、前記複数のX座標検出電極および前記複数のY座標検出電極を有する第一の基板と、前記第一の基板に対向して設けられた第二の基板とを備えた静電容量結合方式タッチパネルにおいて、
前記第一の基板と前記第二の基板側との間に、導電性の導電層と、前記導電層を支持する非導電層と、前記第一および第二の基板の面方向に間隔を有して設けられた複数の非導電性のスペーサと、前記第一の基板、前記第二の基板および前記スペーサよりも剛性が低い弾性層とを備え、
前記導電層はフローティングであり、
タッチした押圧による圧縮で前記弾性層が前記スペーサ形状に沿って変形することにより、前記X座標検出電極と前記導電層、および前記Y座標検出電極と前記導電層の距離が変化することで前記X座標検出電極と前記Y座標検出電極間の静電容量変化により入力座標を検出することを特徴とする静電容量結合方式タッチパネル。 - 請求項1に記載の静電容量結合方式タッチパネルにおいて、
前記第二の基板と前記非導電層に支持された前記導電層との間に、前記弾性層を備え、
前記第一の基板と前記導電層との間に前記スペーサを備えたことを特徴とする静電容量結合方式タッチパネル。 - 請求項1に記載の静電容量結合方式タッチパネルにおいて、
前記第一の基板と前記非導電層に支持された前記導電層との間に、前記弾性層を備え、
前記第二の基板と前記導電層との間に前記スペーサを備えたことを特徴とする静電容量結合方式タッチパネル。 - 請求項2または請求項3に記載の静電容量結合方式タッチパネルにおいて、
前記弾性層は、硬さの異なる三つの層を有し、
中間層がこれを挟む両層より剛性が高い層からなることを特徴とする静電容量結合方式タッチパネル。 - 請求項2乃至4のいずれかに記載の静電容量結合方式タッチパネルにおいて、
前記弾性層の厚さは、前記スペーサの高さよりも大きいことを特徴とする静電容量結合方式タッチパネル。 - 請求項2に記載の静電容量結合方式タッチパネルにおいて、
前記座標検出電極上に絶縁膜を有し、
前記スペーサは、前記絶縁膜に接触しうることを特徴とする静電容量結合方式タッチパネル。 - 請求項1乃至6のいずれかに記載の静電容量結合方式タッチパネルにおいて、
前記スペーサは、ビーズであることを特徴とする静電容量結合方式タッチパネル。 - 請求項1乃至6のいずれかに記載の静電容量結合方式タッチパネルにおいて、
前記スペーサは、前記第一の基板側または前記第二の基板側に形成された突起であることを特徴とする静電容量結合方式タッチパネル。 - 請求項1乃至8のいずれかに記載の静電容量結合方式タッチパネルにおいて、
前記スペーサの設置ピッチは、20μm以上、10000μm以下であることを特徴とする静電容量結合方式タッチパネル - 表示部を有する表示装置と、
前記表示部上に設けられた請求項1乃至9のいずれかに記載の静電容量式タッチパネルとを備えたタッチパネル付表示装置。
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