JPH0320817A - Input/display unified type display device - Google Patents

Input/display unified type display device

Info

Publication number
JPH0320817A
JPH0320817A JP1154694A JP15469489A JPH0320817A JP H0320817 A JPH0320817 A JP H0320817A JP 1154694 A JP1154694 A JP 1154694A JP 15469489 A JP15469489 A JP 15469489A JP H0320817 A JPH0320817 A JP H0320817A
Authority
JP
Japan
Prior art keywords
electrode
liquid crystal
input
display
transparent
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.)
Pending
Application number
JP1154694A
Other languages
Japanese (ja)
Inventor
Minoru Kanzaki
歓崎　実
Takashi Saito
隆 斉藤
Kenichi Hattori
憲一 服部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1154694A priority Critical patent/JPH0320817A/en
Publication of JPH0320817A publication Critical patent/JPH0320817A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars

Landscapes

  • Liquid Crystal (AREA)
  • Position Input By Displaying (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To obtain a small and simplified display device by employing one body constitution in which a tablet function is added to a liquid crystal display. CONSTITUTION:A gate pulse is supplied sequentially on a gate electrode G from a sequential scanning line X, and a TFT is energized. A signal voltage is supplied synchronizing with a gate pulse voltage from a data line Y, and is transmitted to the signal accumulation capacitor C of a picture element via the TFT. When no more gate pulse voltage is applied, the TFT is de- energized, and a signal voltage accumulated in the signal accumulation capacitor C is held until the next scan is received. The signal accumulation capacitor C is connected to a picture element electrode 7, and a liquid crystal is driven quasi-statically with a voltage between the picture element electrode 7 and a counter electrode 8, and transmission and non-transmission modes are set, and black and white display states can be obtained.

Description

【発明の詳細な説明】 （発明の属する技術分野） 本発明は，エンジニアリングワークステーション（ＥＷ
Ｓ）に用いられるコンピュータ・エイデット・デザイン
（Ｃ　Ａ　Ｄ）やコンピュータ・エイデット・エンジニ
アリング（Ｃ　Ａ　Ｅ　）および手書きワープロ、電子
手帳などの文字・図形入力などの入方支援を行うと同時
に描画、表示する画像処理機能，さらに手書１ｍ猫画像
などを同時に伝送するテレライティング装置などのペン
タッチ入力または手書き入力表示一体型ディスプレイ装
置に関するものである。[Detailed description of the invention] (Technical field to which the invention pertains) The present invention relates to an engineering workstation (EW
Computer aided design (CAD) and computer aided engineering (CAE) used in The present invention relates to a pen-touch input or handwriting input/display integrated display device such as a telewriting device that simultaneously transmits an image processing function such as a handwritten 1m cat image, etc.

（従来の技術） 第５図は、従来の入力表示一体型ディスブ１ノイ装置の
一例を示し，同図（ａ）は全体の構或を示す外観図、同
図（ｂ）は同図（ａ）のＡ−Ａ’断面図である。(Prior Art) Fig. 5 shows an example of a conventional input/display integrated display device. ) is a sectional view taken along line AA'.

同図（ａ）に示すように液晶ディスブ！ノイ１の七面に
透明タブレッ１−２がスベーサｔ（１）図参照）の間隔
で貼り合わせた構造になっており，透明タブレット２面
上に入力ペン３や指でタッチすることにより、その押さ
れた点の入力ｆ１ｌ標値を検出し、検出された情報を液
晶ディスブＩノイ】，面で対応した点の画素に変換され
表示される。したがって入力ペン３や指で押された点の
軌跡が表示されることになる。As shown in figure (a), the liquid crystal display! It has a structure in which transparent tablets 1-2 are pasted on the seven sides of Noi 1 at an interval of spacing (see figure 1), and by touching the two sides of the transparent tablet with the input pen 3 or your finger, you can The input value of the pressed point is detected, and the detected information is converted into pixels of the corresponding point on the liquid crystal display screen and displayed. Therefore, the trajectory of the point pressed by the input pen 3 or finger is displayed.

通常の透明タブレット２は、同図（ｂ）に示すように透
明ガラスあるいは透明フイルム基板４の上に透明な均一
抵抗膜５を上下に２枚設け、入力ペン３などで押される
ことにより導通状態となり、この２枚の均一抵抗膜５に
定電流を流して、Ｘ方向，Ｙ方向にそれぞれ分流して入
力座標位［Ｘ，Ｙの座標値を検出する構造である。A normal transparent tablet 2 has two transparent uniform resistance films 5 arranged on top and bottom on a transparent glass or transparent film substrate 4, as shown in FIG. The structure is such that a constant current is passed through these two uniform resistance films 5 and divided in the X direction and the Y direction to detect the coordinate values of the input coordinate position [X, Y].

またアクティブマトリックス駆動型液晶ディスプレイの
構造は、各画素にスイッチ素子と液晶層ＴＮによる信号
蓄積キャパシタを集積し、液晶を準スタティックに駆動
する。この例ではスイッチ素子には薄膜トランジスタ（
ＴＰＴ）が用いられ、ガラス基板６上にアモルファスシ
リコン（ａ−Ｓｉ）やポリシリコン（ｐｏｌｙ　　Ｓ　
ｉ）で形成される．図（ｂ）ではアモルファスシリコン
（ａ−Ｓｉ）の１画素を示した図であり，その構成は、
ゲート電ｆｆ！．Ｇ，ａ−ＳＬ，ソース電極Ｓ，ドレイ
ン電極Ｄでスイッチ素子になっており、薄膜トランジス
タ（Ｔ　Ｐ　Ｔ）を形成し、ＴＰＴの保護として保護膜
ｌ１を設けている。ゲート絶縁膜１０はゲート電極Ｇと
ドレイン電極Ｄの交差による絶縁である．なお、ゲート
電極Ｇは順次走査線であり、ドレイン電極Ｄはデータ線
となる． また、ａ　−　Ｓ　ｉは光に敏感で光が直接あたるとオ
フ電流が増加してしまうので、その上に光遮蔽層９を設
けている．そして、表示のオン・オフは対向電極８と画
素電極７の電位差により，液晶層ＴＮが偏向され光の透
過、非透過状態が作られて表示が行われる． このような構造のアクティブマトリックス駆動型液晶デ
ィスプレイにおいては、次のような問題点があった．即
ち、透明タブレット２と液晶ディスプレイ１を貼り合わ
せた場合、透明な均一抵抗膜５の抵抗率の不均一によっ
て実際に入力した位置と表示する位置とがずれた状態に
なり，座標検出誤差を生じる．透明タブレット２の入力
位置と液晶ディスプレイ１の表示位置とを１対ｌに対応
させるためには、透明タブレット２で押下された入力座
標値の誤差を補正する回路が必要になる．また、透明タ
ブレット２と液晶ディスプレイ１を貼り合わせる時に、
密着して貼り合わせた場合にリング上に干渉縞が生じて
しまい，偏向フィルタ等の対策およびスペーサｔの間隔
を０．５〜ｌｍｍ程度の間隔をあける必要があり、実際
に入力ペン３等で入力した時に、その厚みのために入力
した位置と表示される部分での位置にずれが生じた見え
方となり，マンマシーン上での使いにくい問題点が生じ
ている． （発明の目的） 本発明は上記従来の透明タブレットと液晶ディスプレイ
の貼り合せによる問題点を解決し、さらに厚みを薄くし
マンマシーンのよい小型で簡易な入力表示一体型ディス
プレイ装置を提供することを目的とする。Furthermore, the structure of the active matrix drive type liquid crystal display is such that each pixel integrates a switching element and a signal storage capacitor formed by the liquid crystal layer TN, and drives the liquid crystal quasi-statically. In this example, the switch element is a thin film transistor (
TPT) is used, and amorphous silicon (a-Si) or polysilicon (polyS) is used on the glass substrate 6.
i) is formed. Figure (b) shows one pixel of amorphous silicon (a-Si), and its configuration is as follows.
Gate electric ff! ．． G, a-SL, source electrode S, and drain electrode D form a switching element, forming a thin film transistor (TPT), and a protective film l1 is provided to protect TPT. The gate insulating film 10 is insulated by the intersection of the gate electrode G and the drain electrode D. Note that the gate electrode G is a sequential scanning line, and the drain electrode D is a data line. Furthermore, since a-Si is sensitive to light and its off-state current increases if it is directly exposed to light, a light shielding layer 9 is provided thereon. Then, when turning on and off the display, the liquid crystal layer TN is deflected by the potential difference between the counter electrode 8 and the pixel electrode 7, creating a state where light is transmitted or not, and a display is performed. Active matrix driven liquid crystal displays with this structure have the following problems. That is, when the transparent tablet 2 and the liquid crystal display 1 are pasted together, the actual input position and the displayed position will be misaligned due to non-uniform resistivity of the transparent uniform resistive film 5, resulting in a coordinate detection error. ．． In order to make the input position of the transparent tablet 2 correspond to the display position of the liquid crystal display 1 on a one-to-l basis, a circuit is required to correct errors in the input coordinate values when the transparent tablet 2 is pressed. Also, when pasting the transparent tablet 2 and the liquid crystal display 1 together,
If they are attached closely together, interference fringes will occur on the ring, and it is necessary to take measures such as a deflection filter and to space the spacers t at intervals of about 0.5 to 1 mm. When input, due to its thickness, the input position and the displayed position appear misaligned, making it difficult to use on a man-machine. (Objective of the Invention) The present invention solves the problems caused by the conventional bonding of a transparent tablet and a liquid crystal display, and also provides a compact and simple input/display integrated display device that is thinner and easier to operate. purpose.

（発明の構成） （発明の特徴と従来技術との差異） 本発明は上記目的を達或するため、液晶層を上，下から
挟む第１の電極及び第２の電極と、前記第１の電極に接
続されたスイッチ素子から構威される液晶セルをマトリ
ックス形に配置したアクティブマトリックス駆動型液晶
ディスプレイであって、前記スイッチ素子と第１の電極
との間に導電性台を配設し、前記第２の電極は透明かつ
柔軟性の部材で形成され、前記第１の電極と第２の電極
は絶縁支柱で保持され、前記第２の電極が液晶層とは反
対の方向から押圧されて導電性台に接触することで、液
晶層が駆動されるよう構威したことを特徴とする． 本発明は液晶ディスプレイにタブレット機能を付加した
一体化構成になっており，入力ペンあるいは指で押され
た情報がそのまま描画表示することができるので、従来
技術のように，入力位置の補正を行う必要がなく，また
厚みを薄くすることができ、実際に手書き入力で描いた
文字，図形等をあたかも紙にペンで書いたように違和感
なく描画表示することができる点が異なる。(Structure of the Invention) (Characteristics of the Invention and Differences from the Prior Art) In order to achieve the above object, the present invention includes a first electrode and a second electrode that sandwich the liquid crystal layer from above and below, An active matrix driven liquid crystal display in which liquid crystal cells constituted by switch elements connected to electrodes are arranged in a matrix, a conductive base being disposed between the switch elements and a first electrode, The second electrode is formed of a transparent and flexible member, the first electrode and the second electrode are held by an insulating support, and the second electrode is pressed from a direction opposite to the liquid crystal layer. It is characterized by a structure in which the liquid crystal layer is driven by contact with a conductive base. The present invention has an integrated structure with a tablet function added to the liquid crystal display, and the information pressed with an input pen or finger can be drawn and displayed as is, so the input position can be corrected as in the conventional technology. The difference is that there is no need for it, the thickness can be made thinner, and characters, figures, etc. actually drawn by handwriting input can be drawn and displayed without any discomfort as if they were written with a pen on paper.

（実施例） 第工図は本発明の一実施例の構成を示す図で、同図（ａ
）ｌ：；、非タッチ状態の断面図、同図（１））はタッ
チ状態の断面図である。(Example) The second construction drawing is a diagram showing the configuration of an example of the present invention, and the drawing (a
)l:;, A cross-sectional view of the non-touched state, and (1)) of the same figure is a cross-sectional view of the touched state.

本実施例の液晶ディスブ）ノイＪ−の構成は、前記第５
図（ｂ）で示したのと同じ構成′？？あり，図には１画
素を示し、ガラス基板６上に薄膜トランジスタ（Ｔ　Ｐ
　Ｔ）が形成される。そして、第１の電極を形成する画
素電極７とソース電極３はいずれも導電姓を有しており
、その間１，二同じく導電性を有した導電性台のタツヂ
電極１３を形或ずる。また第２の電極を形成する透明対
向電極８（ＹＴＯ膜）の上に透明フレキ基板ｌ２、例え
ば柔軟性のあるフィルム状のものを用いるいまた６大画
面【こなった場合、たわみによっ丁タッチ電極１３への
接触Δ・防ぐため、絶縁支柱１４を画素！ｌｉ位あるい
は数町の間隔帽で設けてある。したがって、第５図に示
す従来の液晶ディスプレイ１ヒ透明タブ１ノッ１・２の
構成に比べ本実施例では、透明苅向電極ｓｉｉこ透明フ
）ノキ基扱１２を配直ずるのみであり薄型Ｌ二柵成で２
る。The configuration of the liquid crystal display (LCD) of this embodiment is as follows:
Same configuration as shown in Figure (b)? ? The figure shows one pixel, and a thin film transistor (T P
T) is formed. The pixel electrode 7 and the source electrode 3 forming the first electrode both have a conductive property, and form a conductive base electrode 13 between them. In addition, a transparent flexible substrate 12, such as a flexible film-like material, is used on the transparent counter electrode 8 (YTO film) that forms the second electrode. To prevent contact Δ to the touch electrode 13, the insulating column 14 is connected to the pixel! It is provided with a distance cap of 1st place or several towns. Therefore, compared to the conventional structure of the liquid crystal display 1 shown in FIG. L two fences and 2
Ru.

上記（ａ）図の構成において（ｂ）図に示づように例え
ば入力ベン３で入力指示した場合，透明プレキ基板１２
が入力ベン３１こよって押され゛「、タッチ電極１３と
透明対向電極８が接触する。この射；果、タッチ入力検
出が行なわＡ１，，手書き入力した線画が描画表示され
る。In the configuration shown in the above figure (a), when an input instruction is made using the input ben 3 as shown in figure (b), the transparent plexiboard 12
is pressed by the input ben 31, and the touch electrode 13 comes into contact with the transparent counter electrode 8.As a result, touch input is detected and the line drawing input by hand is drawn and displayed.

第２図は−Ｌ記液品ディスプレイの１画素についてのタ
ッチ入力検出同路を示す。これは７薄膜１・・ランジス
タ（Ｔ　Ｐ　Ｔ）で形成されたスイッチ素子と液晶層Ｔ
Ｎによる倍月一蓄積キャパシタＣおよび液晶層ＴＮ部分
の１画素をあらわした表示素子Ｔ　Ｎ１、それに接Ｉ！
された遡明苅向電極８４＝；よびタッチ電極１３から成
る構成である。また、センサアンプＡｍｐｌはデータ線
Ｖにより外部接続されており、入力タッチ検９％借号と
して取り出される２人力指示が成されていない（第１図
（ａ）非タッチ状態）状態の時は、通悼めアクティブマ
ｌ−リックス型駆動の液晶ディスブ１／イによる動作で
ある。FIG. 2 shows the touch input detection circuit for one pixel of the -L liquid product display. This is a switch element formed by 7 thin films 1...transistor (T P T) and a liquid crystal layer T.
A storage capacitor C by N and a display element T N1 representing one pixel of the liquid crystal layer TN portion, connected to I!
The touch electrode 13 is configured to include a retrograde axillary electrode 84 and a touch electrode 13. In addition, the sensor amplifier Ampl is externally connected by a data line V, and when the input touch detection 9% input signal is not input by two people (non-touch state in FIG. 1(a)), This operation is performed by an active matrix type driven liquid crystal display.

駅動は順次走査線Ｘで行われその動作を簡単に説明する
、 いま、順次走査線Ｘより、ゲーＩ−電極Ｇに厘次ゲーｈ
パルス電圧を印加し、ＴＰＴを凍通状態に励起する。信
号竜ＦＥはデータ線ｙより、ゲー１−パルス電圧に同期
して供給され、ＴＰＴを通しで画素の借号蓄積キャパシ
タＣに伝達される。ゲ・一トバルス電圧が印加しなくな
ると、ＴＰＴは非湛通状態となり，信号蓄積キャパシタ
已に蓄えられた信号電圧は次の走査を受けるまで保持さ
ｉ１，てし１る。The station motion is performed on the sequential scanning line X, and its operation will be briefly explained. Now, from the sequential scanning line
A pulse voltage is applied to excite the TPT to a freezing state. The signal signal FE is supplied from the data line y in synchronization with the gate 1 pulse voltage, and is transmitted to the pixel borrow storage capacitor C through the TPT. When the gate pulse voltage is no longer applied, the TPT becomes non-filled and the signal voltage stored across the signal storage capacitor is held until the next scan.

信号蓄積キャパシタＣｌｏｔ画素電極７に接続されＣお
り：画素電極７と苅向嘔極８との間の電圧により１やス
タテティ））　Ｉ，ｙ液晶が駆動され、透過、非透過モ
ードになり表示状態が白あるい＋．ｔ　Ｍが得られる。The signal storage capacitor Clot is connected to the pixel electrode 7. The voltage between the pixel electrode 7 and the axillary pole 8 drives the I, Y liquid crystal, which changes the display state to transmissive or non-transmissive mode. is white or +. tM is obtained.

二のような構ｌ戊から、人力ベン；３もろいは指でタッ
チし７たーＦ表き入力された情報は、透明対向電極３を
７ース電位にする丁と番こより−７液晶部の信汗蓄積キ
ャパシ！ＩＣが放電されて、その放電電流をセンザアン
ブＡｍｐｉで読み出しイーの位置の座標値を検出する，
二とができる、ただし、表示がすでに黒画素の時は借号
蓄積キャパシタＣは充電されておらず，黒画素処理を施
す必要がある。例えばあらかじめ黒画素に微量の電荷を
蓄積してスレッシ扉ルドを設け、白画素と黒画素を分離
して読み取る方法がある。From the configuration shown in 2, manual operation; 3. The information inputted by touching with a finger is the information inputted by touching the transparent counter electrode 3 with the 7-base potential. Shin sweat accumulation capacity! When the IC is discharged, the discharge current is read out by the sensor amplifier Ampi and the coordinate values of the position of E are detected.
However, when the display is already a black pixel, the borrowed symbol storage capacitor C is not charged, and it is necessary to perform black pixel processing. For example, there is a method in which a small amount of charge is accumulated in black pixels in advance to provide a threshold, and white pixels and black pixels are read separately.

第３図に実際の液晶ディスブ！，ノイで表示した時およ
びタッチ入力した時の描画処理フ〇一のブロック図を示
す。フ１ノームメモリ（１）より画像を■画面入力表示
する、タッチ入力がＮＯであればそのまま表示する。タ
ッチ入力がＹ　Ｅ　Ｓならば表示状態の白・黒を判別す
る。表示が黒であれば黒画素の処理を行い、座標値をリ
ードしてフレームメモリ（２）へ手書き入力デー・夕と
して格納される，，その後、フレームメモリ（２）から
のデータはフレームメモリ（１）に合或ざわ，て描画表
示さオ１，る。Figure 3 shows the actual LCD display! , shows a block diagram of the drawing processing process when displayed in Noi and when input by touch. 1 Display the image from the norm memory (1) on the screen. If the touch input is NO, display it as is. If the touch input is YES, the display state is determined to be white or black. If the display is black, black pixels are processed, and the coordinate values are read and stored in the frame memory (2) as handwritten input data.Then, the data from the frame memory (2) is transferred to the frame memory (2). If 1) is met, the drawing will be displayed.

第４図に本発明の駆動回路の構或例１４を示す。FIG. 4 shows a fourteenth example of the structure of the drive circuit of the present invention.

フ１ハームメモリ（１）Ｌこは、キャラクタ情報や静１
Ｌ画情報が格納されている。アクティブマ１−リックス
液晶ディスプレイ１，はｍ　ｘ　ｎ画素で構成して才；
り，データ線Ｙにシフ１−レジスタＹｍ．Ｙラッチドラ
イバｒｎが接続される。F1 harm memory (1) L This is character information and static 1
L image information is stored. The active matrix liquid crystal display 1 is composed of m x n pixels;
Shift 1-register Ym. A Y latch driver rn is connected.

また、順次走査線Ｘ　ｌ．こはＸドライバｒ１が接続さ
れラインごとにゲー１−パルス電圧が印加される。In addition, sequential scanning lines X l. The X driver r1 is connected here, and a gate 1-pulse voltage is applied to each line.

フレームメモリ（１）からの信号データは、シフトレジ
スタＹｍに１フレーム単位でＹラッチドライバｍに信号
データが蓄積され，Ｘドライバｎに同期し順次表示して
１画面表示が行われる．入力ペンあるいは指でタッチし
た情報は、センサアンプＡ＋ｗｐにて読みだされ，ラッ
チされる．ここで黒画素処理が行なわれた座標値データ
は、シフトレジスタによりフレームメモリ（２）に手書
き入力データとして格納する．この手書き画データはフ
レームメモリ（１）のキャラクタまたは静止画情報と合
成されて液晶ディスプレイに重ねて描画表示する．なお
フレームメモリ（１）からの画倣データは逐次表示され
ている． （発明の効果） 以上説明したように，本発明によれば，アクティブマト
リックス駆動型液晶ディスプレイにタブレット機能を付
加し、手書き入力した位置と表示される画像位置とが同
一の位置に描画表示することができる入力表示一体型構
゜或であるので、手書き入力により文字・図形など描く
と同時に表示することかできる．そして従来の技術に比
べて、タブレット入力座標値の補正回路を必要とせず、
さらに厚みを薄くすることができマンマシーンに優れた
利点がある。ここで入力座標値の検出に信号′蓄積キャ
パシタの充放電を利用して行ったが，この蓄積キャパシ
タの容量変化を検出して行えば黒画素処理を行う必要が
なく．さらに簡単な駆動構成で行えることは言うまでも
ない．The signal data from the frame memory (1) is stored in the Y latch driver m in units of one frame in the shift register Ym, and is sequentially displayed in synchronization with the X driver n to perform one-screen display. Information touched with an input pen or finger is read out and latched by the sensor amplifier A+wp. The coordinate value data subjected to the black pixel processing is stored as handwritten input data in the frame memory (2) by a shift register. This handwritten drawing data is combined with the character or still image information in the frame memory (1) and displayed as an overlapping drawing on the liquid crystal display. Note that the copying data from frame memory (1) is displayed sequentially. (Effects of the Invention) As explained above, according to the present invention, a tablet function is added to an active matrix driven liquid crystal display, and a drawing is displayed at the same position as the position of handwritten input and the position of the displayed image. Since it has an integrated input and display structure, it is possible to draw characters and figures using handwritten input and display them at the same time. And compared to conventional technology, there is no need for a correction circuit for tablet input coordinate values,
Furthermore, the thickness can be made thinner, which has an excellent advantage for man-machine use. Here, we used the charging and discharging of the signal storage capacitor to detect the input coordinate values, but if we detect the capacitance change of this storage capacitor, there is no need to perform black pixel processing. It goes without saying that this can be done with an even simpler drive configuration.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例の構成を示す図で，（ａ）は
非タッチ状態図，（ｂ）はタッチ状態図である．第２図
は液晶ディスプレイの１画素についてのタッチ入力検出
回路図、第３図は描画処理フローのブロック図，第４図
は本発明の駆動回路の構成図，第５図は従来の入力表示
一体型ディスプレイ装置の一例を示し，（ａ）は全体の
構或を示す外観図、（ｂ）は同図（ａ）のＡ−Ａ’断面
図である。 １　・・・液晶ディスプレイ，　２　・・・透明タブレ
ット、　３　・・・入力ペン，　４　・・・透明ガラス
または透明フィルム基板，　５・・・透明な均一抵抗膜
、　６・・・ガラス基板、　７・・・画素電極、　８・
・・透明対向電極、　９　・・・光遮蔽層、１０・・・
ゲート絶縁膜．　　１１・・・保護膜、１２・・・透明
フレキ基板、ｌ３・・・タッチ電極、１４・・・絶縁支
柱．　　ＴＰＴ・・・薄膜トランジスタ、ａ−ＳＬ・・
　アモルファスシリコン、　Ｇ・・・ゲート電極、　Ｓ
　・・・ソース電極，Ｄ・・・　ドレイン電極、　ＴＮ
　・・・液晶層，ＴＮＩ　　・・・表示素子、　Ｃ・・
・信号蓄積キャパシタ、　Ａｍｐｌ　　・・・センサア
ンプ、Ｘ・・・順次走査線、　Ｙ　・・・データ線。 第１図 （ａ） （ｂ）FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, in which (a) is a non-touch state diagram and (b) is a touch state diagram. Fig. 2 is a touch input detection circuit diagram for one pixel of a liquid crystal display, Fig. 3 is a block diagram of a drawing process flow, Fig. 4 is a configuration diagram of a drive circuit of the present invention, and Fig. 5 is a conventional input display circuit diagram. An example of a body display device is shown, in which (a) is an external view showing the overall structure, and (b) is a cross-sectional view taken along the line AA' in the same figure (a). 1...Liquid crystal display, 2...Transparent tablet, 3...Input pen, 4...Transparent glass or transparent film substrate, 5...Transparent uniform resistance film, 6...Glass substrate, 7 ...pixel electrode, 8.
...Transparent counter electrode, 9...Light shielding layer, 10...
Gate insulating film. DESCRIPTION OF SYMBOLS 11... Protective film, 12... Transparent flexible board, l3... Touch electrode, 14... Insulating support. TPT...Thin film transistor, a-SL...
Amorphous silicon, G...gate electrode, S
... Source electrode, D... Drain electrode, TN
...Liquid crystal layer, TNI ...Display element, C...
・Signal storage capacitor, Ampl...Sensor amplifier, X...Sequential scanning line, Y...Data line. Figure 1 (a) (b)

Claims (1)

【特許請求の範囲】 液晶層を上、下から挟む第１の電極及び第２の電極と、
前記第１の電極に接続されたスイッチ素子から構成され
る液晶セルをマトリックス形に配置したアクティブマト
リックス駆動型液晶ディスプレイであって、 前記スイッチ素子と第１の電極との間に導電性台を配設
し、前記第２の電極は透明かつ柔軟性の部材で形成され
、前記第１の電極と第２の電極は絶縁支柱で保持され、
前記第２の電極が液晶層とは反対の方向から押圧されて
導電性台に接触することで、液晶層が駆動されるよう構
成したことを特徴とする入力表示一体型ディスプレイ装
置。[Claims] A first electrode and a second electrode that sandwich a liquid crystal layer from above and below;
An active matrix drive type liquid crystal display in which liquid crystal cells constituted by switch elements connected to the first electrode are arranged in a matrix shape, wherein a conductive base is arranged between the switch element and the first electrode. the second electrode is formed of a transparent and flexible member, the first electrode and the second electrode are held by an insulating support,
An input/display integrated display device, characterized in that the liquid crystal layer is driven by the second electrode being pressed from a direction opposite to the liquid crystal layer and coming into contact with a conductive base.
JP1154694A 1989-06-19 1989-06-19 Input/display unified type display device Pending JPH0320817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1154694A JPH0320817A (en) 1989-06-19 1989-06-19 Input/display unified type display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1154694A JPH0320817A (en) 1989-06-19 1989-06-19 Input/display unified type display device

Publications (1)

Publication Number Publication Date
JPH0320817A true JPH0320817A (en) 1991-01-29

Family

ID=15589902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1154694A Pending JPH0320817A (en) 1989-06-19 1989-06-19 Input/display unified type display device

Country Status (1)

Country Link
JP (1) JPH0320817A (en)

Cited By (13)

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Publication number Priority date Publication date Assignee Title
JPH06311990A (en) * 1993-04-30 1994-11-08 Yoshida Dental Mfg Co Ltd Dental treatment device
JP2001075074A (en) * 1999-08-18 2001-03-23 Internatl Business Mach Corp <Ibm> Touch sensor type liquid crystal display device
JP2006201763A (en) * 2004-12-23 2006-08-03 Samsung Electronics Co Ltd Display device and driving method thereof, and driving apparatus for the display device
JP2007220123A (en) * 2006-02-17 2007-08-30 Samsung Electronics Co Ltd Thin film transistor display panel and display device
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JP2008198180A (en) * 2007-02-12 2008-08-28 Samsung Electronics Co Ltd Display device and driving method thereof
JP2009301545A (en) * 2008-06-09 2009-12-24 Samsung Electronics Co Ltd Touch screen display device
JP2010015051A (en) * 2008-07-04 2010-01-21 Tpo Displays Corp Active matrix display apparatus with touch sensing function
JP2010039380A (en) * 2008-08-07 2010-02-18 Sony Corp Liquid crystal display device and manufacturing method for the same
JP2010085435A (en) * 2008-09-29 2010-04-15 Casio Computer Co Ltd Liquid crystal display device and liquid crystal display apparatus
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06311990A (en) * 1993-04-30 1994-11-08 Yoshida Dental Mfg Co Ltd Dental treatment device
JP2001075074A (en) * 1999-08-18 2001-03-23 Internatl Business Mach Corp <Ibm> Touch sensor type liquid crystal display device
JP2006201763A (en) * 2004-12-23 2006-08-03 Samsung Electronics Co Ltd Display device and driving method thereof, and driving apparatus for the display device
US8586989B2 (en) 2006-02-17 2013-11-19 Samsung Display Co., Ltd. Thin film transistor array panel and display device
JP2007220123A (en) * 2006-02-17 2007-08-30 Samsung Electronics Co Ltd Thin film transistor display panel and display device
JP2008116938A (en) * 2006-10-31 2008-05-22 Samsung Electronics Co Ltd Display apparatus and method of manufacturing the same
JP2008164671A (en) * 2006-12-27 2008-07-17 Seiko Epson Corp Display apparatus and electronic paper
JP2008198180A (en) * 2007-02-12 2008-08-28 Samsung Electronics Co Ltd Display device and driving method thereof
JP2009301545A (en) * 2008-06-09 2009-12-24 Samsung Electronics Co Ltd Touch screen display device
JP2010015051A (en) * 2008-07-04 2010-01-21 Tpo Displays Corp Active matrix display apparatus with touch sensing function
JP4674291B2 (en) * 2008-07-04 2011-04-20 奇美電子股▲ふん▼有限公司 Active matrix display device with touch sense function
TWI402591B (en) * 2008-07-04 2013-07-21 Innolux Corp Active matrix display apparatus with touch sense function
JP2010039380A (en) * 2008-08-07 2010-02-18 Sony Corp Liquid crystal display device and manufacturing method for the same
JP2010085435A (en) * 2008-09-29 2010-04-15 Casio Computer Co Ltd Liquid crystal display device and liquid crystal display apparatus
US8400411B2 (en) 2008-09-29 2013-03-19 Casio Computer Co., Ltd. Liquid crystal display device and liquid crystal display apparatus
JP2010139525A (en) * 2008-12-09 2010-06-24 Sony Corp Display, display driving method, and electronic apparatus
US8654088B2 (en) 2008-12-09 2014-02-18 Japan Display West Inc. Display, display driving method, and electronic apparatus
JP2010175595A (en) * 2009-01-27 2010-08-12 Sony Corp Liquid crystal display device
US8508484B2 (en) 2009-01-27 2013-08-13 Japan Display West, Inc. Liquid crystal display device

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