JPH09274536A - Display device, production of the same and electronic device - Google Patents

Display device, production of the same and electronic device

Info

Publication number
JPH09274536A
JPH09274536A JP9025512A JP2551297A JPH09274536A JP H09274536 A JPH09274536 A JP H09274536A JP 9025512 A JP9025512 A JP 9025512A JP 2551297 A JP2551297 A JP 2551297A JP H09274536 A JPH09274536 A JP H09274536A
Authority
JP
Japan
Prior art keywords
touch switch
transparent
liquid crystal
crystal display
display element
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.)
Granted
Application number
JP9025512A
Other languages
Japanese (ja)
Other versions
JP3220403B2 (en
Inventor
Tsutomu Matsudaira
努 松平
Kimiko Munemasa
紀美子 宗政
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP02551297A priority Critical patent/JP3220403B2/en
Publication of JPH09274536A publication Critical patent/JPH09274536A/en
Application granted granted Critical
Publication of JP3220403B2 publication Critical patent/JP3220403B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To improve picture quality by lowering the factor of reflection between a touch switch and a liquid crystal display element rather than a conventional case by adhering the display screen of the liquid crystal display element and the rear side of input area of the transparent touch switch through a transparent adhesive agent. SOLUTION: A liquid crystal layer is formed and held between two transparent glass boards 1a and 1b, and a deflection board 2a and a deflection board 2b with reflection board are stuck on the respective transparent boards 1a and 1b. Besides, a driver IC 3 for driving liquid crystal is mounted at the terminal part of the transparent board 1a. On the display screen of that liquid crystal display element, an analog resistant film type touch switch 4 using glass and a film is adhered by a transparent adhesive agent 5. The entire rear side of the input area is coated with the transparent adhesive agent 5 at least. In this case, when the transparent adhesive agent 5 of refraction factor from 1.47 to 1.57 after hardening, the refraction factor of glass boards 1a and 1b is almost equal with 1.52, the reflection between the touch switch 4 and the liquid crystal display element is almost eliminated and picture quality is improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、携帯機器等に使用
される、タッチスイッチを有する表示装置、その製造方
法および該表示装置を備える電子装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having a touch switch, which is used in a portable device or the like, a manufacturing method thereof, and an electronic device having the display device.

【０００２】[0002]

【従来の技術】従来液晶表示素子の上に透明タッチスイ
ッチを配置する方法として、図７に示すように、少なく
とも２枚の透明基板１ａ，１ｂ間に液晶を封入して保持
するとともに、その透明基板の表面に光学フイルム２
ａ，２ｂが貼りあわされた構造の液晶表示素子の外周に
設けられた厚さ０．５〜１ｍｍ程度の両面粘着剤１０に
より、透明タッチスイッチ４が粘着固定されていた。2. Description of the Related Art Conventionally, as a method of disposing a transparent touch switch on a liquid crystal display element, as shown in FIG. 7, liquid crystal is sealed and held between at least two transparent substrates 1a and 1b, and the transparent touch switch is transparent. Optical film 2 on the surface of the substrate
The transparent touch switch 4 was adhered and fixed by the double-sided adhesive 10 having a thickness of about 0.5 to 1 mm provided on the outer periphery of the liquid crystal display element having a structure in which a and 2b were stuck together.

【０００３】[0003]

【発明が解決しようとする課題】液晶表示素子上に透明
タッチスイッチを配置した場合、透明タッチスイッチの
表面および透明タッチスイッチと表示素子との間の面で
外からの光が反射するため画質が悪くなった。特に反射
型の液晶表示素子にタッチスイッチを載せた場合に画面
が暗くなってしまい、画質が著しく悪かった。When a transparent touch switch is arranged on a liquid crystal display element, the light from the outside is reflected on the surface of the transparent touch switch and the surface between the transparent touch switch and the display element, so that the image quality is improved. It got worse. In particular, when a touch switch is mounted on a reflective liquid crystal display element, the screen becomes dark and the image quality is extremely poor.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決するため
に、透明フイルムや透明基板を使用したアナログ抵抗膜
方式、デジタル抵抗膜方式、静電容量または超音波方式
などの透明タッチスイッチと液晶表示素子を備えた表示
装置において、液晶表示素子の表示面と透明タッチスイ
ッチの入力領域の裏面を、透明接着剤で接着する構成と
した。この構成によりタッチスイッチと液晶表示素子間
の反射率が従来より低下するので画質が向上する。In order to solve the above problems, a transparent touch switch such as an analog resistance film method, a digital resistance film method, a capacitance or ultrasonic method using a transparent film or a transparent substrate, and a liquid crystal display. In the display device including the element, the display surface of the liquid crystal display element and the back surface of the input area of the transparent touch switch are bonded with a transparent adhesive. With this configuration, the reflectance between the touch switch and the liquid crystal display element is lower than in the conventional case, so that the image quality is improved.

【０００５】さらに、前記透明接着剤に透明フィラーを
混入することとした。これにより、入力領域等の大きな
面積で接着させた場合に、透明接着剤の硬化収縮により
発生する表示ムラを画質を損なうことなく抑えることが
できる。Further, a transparent filler is mixed in the transparent adhesive. This makes it possible to suppress display unevenness caused by curing shrinkage of the transparent adhesive when the large area such as the input area is adhered, without impairing the image quality.

【０００６】また、その製造方法においては、透明タッ
チスイッチの裏面の中央に透明接着剤を塗布する工程
と、前記タッチスイッチを反転し、表示装置を位置あわ
せする工程と、タッチスイッチを反転することにより塗
布された透明接着剤に発生する液ダレを、液晶表示素子
にゆっくり接着させて重ね合わせる工程と、前記透明接
着剤をタッチスイッチと液晶表示素子の間を流動させる
工程と、を備えることとした。この製造方法により、透
明接着剤を大気中で気泡の進入なくタッチスイッチと液
晶表示素子の間に充填できる。Further, in the manufacturing method, a step of applying a transparent adhesive to the center of the back surface of the transparent touch switch, a step of reversing the touch switch and aligning the display device, and a step of reversing the touch switch. A step of slowly adhering the liquid drip generated in the transparent adhesive applied by the method to the liquid crystal display element and superimposing the transparent adhesive, and a step of flowing the transparent adhesive between the touch switch and the liquid crystal display element. did. By this manufacturing method, the transparent adhesive can be filled between the touch switch and the liquid crystal display element in the atmosphere without air bubbles entering.

【０００７】さらに、透明タッチスイッチが少なくとも
その入力領域面で透明接着剤により面接着された表示素
子と、前記タッチスイッチに加わる力を吸収する機構を
有する入力ペンとを備えることとした。このような入力
ペンにより、タッチスイッチに加わる力が一定値以上大
きくならないので、表示ムラが発生することがない。上
記のように構成された表示装置は、画質が向上した。ま
た、高価な製造装置を必要せず、簡単に製造することが
可能となった。Further, the transparent touch switch is provided with a display element surface-bonded with a transparent adhesive at least on the input area surface thereof, and an input pen having a mechanism for absorbing a force applied to the touch switch. With such an input pen, since the force applied to the touch switch does not become larger than a certain value, display unevenness does not occur. The display device configured as described above has improved image quality. In addition, it becomes possible to easily manufacture without requiring an expensive manufacturing apparatus.

【０００８】[0008]

【発明の実施の形態】透明タッチスイッチを有する表示
装置において、少なくとも入力領域全面のタッチスイッ
チと液晶表示素子との間に、タッチスイッチおよび液晶
表示素子の基板材料と等しい屈折率を持つ接着剤を充填
する。これによりタッチスイッチ、接着剤層、液晶表示
素子の屈折率が同等になり、各層間での光の屈折がなく
なるので、タッチスイッチと液晶表示素子との間の反射
がほぼなくなり、画質が向上する。BEST MODE FOR CARRYING OUT THE INVENTION In a display device having a transparent touch switch, an adhesive having a refractive index equal to that of the substrate material of the touch switch and the liquid crystal display element is provided at least between the touch switch on the entire input area and the liquid crystal display element. Fill. As a result, the refractive index of the touch switch, the adhesive layer, and the liquid crystal display element are equalized, and the refraction of light between the layers is eliminated, so that there is almost no reflection between the touch switch and the liquid crystal display element, and the image quality is improved. .

【０００９】[0009]

【実施例】以下に本発明の実施例を図面に基づいて説明
する。 （実施例１）図１は本発明による表示装置の第１の実施
例を示す概略側面図である。本実施例による表示装置
は、０．７ｍｍの２枚のガラス製透明基板１ａと１ｂの
間に液晶層が形成、保持され、偏向板２ａと反射板付き
偏向板２ｂがそれぞれの透明基板に貼り付けられてい
る。また、液晶を駆動するためのドライバＩＣ３が透明
基板の端子部に実装されている。その液晶表示素子の表
示面側に０．７ｍｍのガラスとフイルムを使用したアナ
ログ抵抗膜方式のタッチスイッチ４が透明接着剤５によ
り接着してある。透明接着剤は少なくともタッチスイッ
チの入力領域の裏面全体に充填している。ここで、硬化
後の屈折率が１．４７〜１．５７の透明接着剤を用いる
と、ガラス基板の屈折率１．５２とほぼ等しいため、タ
ッチスイッチと液晶表示素子間の反射がほぼなくなり画
質が向上する。Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a schematic side view showing a first embodiment of a display device according to the present invention. In the display device according to the present embodiment, a liquid crystal layer is formed and held between two 0.7 mm glass transparent substrates 1a and 1b, and the deflection plate 2a and the deflection plate 2b with a reflection plate are attached to each transparent substrate. It is attached. A driver IC 3 for driving the liquid crystal is mounted on the terminal portion of the transparent substrate. An analog resistance film type touch switch 4 using a 0.7 mm glass and a film is adhered to the display surface side of the liquid crystal display element with a transparent adhesive 5. At least the entire back surface of the input area of the touch switch is filled with the transparent adhesive. Here, when a transparent adhesive having a refractive index of 1.47 to 1.57 after curing is used, it is almost equal to the refractive index of 1.52 of the glass substrate, so that there is almost no reflection between the touch switch and the liquid crystal display element. Is improved.

【００１０】さらに、硬化後の屈折率がガラスの屈折率
１．５２と等しい透明接着剤を用いるのが最適である。
すなわち、タッチスイッチが接着されるガラスと接着剤
の硬化後の屈折率が同一であるため、タッチスイッチと
液晶表示素子間の反射がなくなり極めて画質が向上す
る。ここで用いられるタッチスイッチは、アナログ抵抗
膜方式に限らず、抵抗膜デジタル方式、静電容量方式ま
たは、超音波方式でもよい。Further, it is optimum to use a transparent adhesive whose refractive index after curing is equal to that of glass, which is 1.52.
That is, since the glass to which the touch switch is bonded and the refractive index of the adhesive after curing are the same, there is no reflection between the touch switch and the liquid crystal display element, and the image quality is greatly improved. The touch switch used here is not limited to the analog resistance film type, but may be a resistance film digital type, a capacitance type, or an ultrasonic type.

【００１１】（実施例２）図２は本願発明による表示装
置の第２の実施例である。その基本的な構成は、実施例
１と同一である。タッチスイッチと液晶表示素子を接着
する透明接着剤５の硬化収縮率は５％程度あるため、該
接着剤が硬化するとタッチスイッチと液晶表示素子が反
り、表示画面にムラが発生する恐れがある。そこで、透
明接着剤５に透明フィラー６を混ぜ、硬化収縮率を低く
することで反りの発生を防止する。(Second Embodiment) FIG. 2 shows a second embodiment of the display device according to the present invention. The basic configuration is the same as that of the first embodiment. Since the transparent adhesive 5 for bonding the touch switch and the liquid crystal display element has a curing shrinkage of about 5%, when the adhesive is hardened, the touch switch and the liquid crystal display element may be warped to cause unevenness on the display screen. Therefore, the transparent adhesive 5 is mixed with the transparent filler 6 to reduce the curing shrinkage ratio to prevent the occurrence of warpage.

【００１２】本実施例の透明フィラーは真球形プラスチ
ック粒子であり、その直径は１２ミクロン、屈折率は
１．４７〜１．５７である。すなわち、接着剤の硬化後
の屈折率に近い屈折率を持つ透明フィラーを用いるのが
よい。The transparent filler of this embodiment is a spherical plastic particle having a diameter of 12 microns and a refractive index of 1.47 to 1.57. That is, it is preferable to use a transparent filler having a refractive index close to that of the adhesive after curing.

【００１３】さらに、透明フィラーの混入量は、接着剤
に対し２ｗｔ％とした。これ以上混ぜた場合は、接着剤
層が曇ってしまうので画質が低下する。ただし、フィラ
ーと接着剤の屈折率がほぼ同じ場合（例えば１．５２）
は、接着剤層の曇りが低下するので、更に多く混ぜるこ
とが可能である。Further, the amount of the transparent filler mixed is 2 wt% with respect to the adhesive. If it is mixed more than this, the adhesive layer becomes cloudy and the image quality deteriorates. However, when the refractive index of the filler is almost the same as the adhesive (for example, 1.52)
Can reduce the cloudiness of the adhesive layer, so that it is possible to mix more.

【００１４】（実施例３）図３は、本発明によるタッチ
パネルを有する表示装置の製造方法を示す実施例であ
る。図４にそのフロー図を示す。まず図３（Ａ）の様
に、透明タッチスイッチの裏面に透明接着剤を塗布す
る。必要に応じて脱泡した透明接着剤を用いてもよい。
例えばこの透明接着剤は紫外線硬化型であり、約６イン
チの液晶表示素子の場合に塗布する量は約１．４ｇであ
る。(Embodiment 3) FIG. 3 is an embodiment showing a method of manufacturing a display device having a touch panel according to the present invention. FIG. 4 shows a flowchart of the operation. First, as shown in FIG. 3A, a transparent adhesive is applied to the back surface of the transparent touch switch. A defoamed transparent adhesive may be used if necessary.
For example, this transparent adhesive is an ultraviolet curing type, and in the case of a liquid crystal display device having a size of about 6 inches, the amount applied is about 1.4 g.

【００１５】次に、この透明タッチスイッチを反転し
て、液晶表示素子１１と位置合わせを行う。この時、図
３（Ｂ）のように、透明タッチスイッチに塗布された接
着剤に液だれ５ａができる。この液だれ５ａは、塗布量
と接着剤の粘度により発生の仕方が変わる。したがっ
て、塗布量と接着剤の粘度を調節することにより液だれ
を制御することができる。生じさせる液だれは１つでも
複数でも構わない。Next, the transparent touch switch is inverted and aligned with the liquid crystal display element 11. At this time, as shown in FIG. 3 (B), a liquid drip 5a is formed on the adhesive applied to the transparent touch switch. The way in which the liquid drip 5a is generated depends on the amount of application and the viscosity of the adhesive. Therefore, dripping can be controlled by adjusting the coating amount and the viscosity of the adhesive. One or more liquids may be generated.

【００１６】この状態で、図３（Ｃ）のようにタッチパ
ネルを液晶表示素子１１とゆっくり重ね合わせる。液だ
れの先端と液晶表示素子の表面が接触する瞬間の状態
は、限りなく点に近くなるため、気泡は混入しない。In this state, the touch panel is slowly overlaid on the liquid crystal display element 11 as shown in FIG. The state at the moment when the tip of the dripping and the surface of the liquid crystal display element come into contact with each other is as close to a point as possible, so that bubbles do not enter.

【００１７】しかしながら、このスピードが早い場合、
液だれの先端に衝撃が加わり、図５のように液だれの表
面に波（凹凸）が発生し、この部分に気泡が混入するこ
ととなる。液だれと液晶表示素子が接触するときのスピ
ードは、約５０μｍ／ｓ以下が好ましい。重ね合わせ
は、タッチパネルと液晶表示素子の距離が約０．５ｍｍ
のスペースを保持した状態で、タッチパネルをフリーの
状態にする。However, if this speed is high,
An impact is applied to the tip of the dripping, and waves (irregularities) are generated on the surface of the dripping as shown in FIG. 5, and bubbles are mixed in this portion. The speed at which the liquid drop contacts the liquid crystal display element is preferably about 50 μm / s or less. When overlapping, the distance between the touch panel and the liquid crystal display element is about 0.5 mm
While keeping the space of, make the touch panel free.

【００１８】この状態のまま約１０〜３０分放置する
と、接着剤はゆっくりと透明タッチスイッチと液晶表示
素子の間に流れて両間隙に充填する。このように、放置
により接着剤が充填するために、接着剤の粘度は１００
０〜６０００ｃｐの範囲が好ましい。接着剤が充填した
のを確認して、紫外線を上面から均一に照射して硬化す
る。以上の工程により、接着層の厚みは０．１〜０．２
ｍｍとなり、従来より０．４〜０．８ｍｍ薄くなる。こ
のようにして、透明タッチスイッチと液晶表示素子の間
に接着剤が充填される。If this state is left for about 10 to 30 minutes, the adhesive slowly flows between the transparent touch switch and the liquid crystal display element to fill both gaps. In this way, the viscosity of the adhesive is 100 because it is filled with the adhesive when left standing.
The range of 0 to 6000 cp is preferable. After confirming that the adhesive is filled, ultraviolet rays are uniformly irradiated from the upper surface to cure. Through the above steps, the thickness of the adhesive layer is 0.1 to 0.2.
mm, which is 0.4 to 0.8 mm thinner than the conventional one. In this way, the adhesive is filled between the transparent touch switch and the liquid crystal display element.

【００１９】また、接着剤の粘度が高い場合、例えば１
００００ｃｐの接着剤の場合は、タッチスイッチと表示
素子の間に広がらず、両間隙内を充填することはできな
い。しかしながら、加温することにより接着剤の粘度が
低下するので、重ね合わせ後に加温放置すれば、２００
００ｃｐ程度の粘度があっても充填させることができ
る。If the viscosity of the adhesive is high, for example, 1
In the case of an adhesive of 0000 cp, it does not spread between the touch switch and the display element, and the space between them cannot be filled. However, heating causes the viscosity of the adhesive to decrease, so if the adhesive is left to heat after stacking,
It can be filled even if it has a viscosity of about 00 cp.

【００２０】接着剤は、紫外線硬化型に限らず、可視光
硬化型でも硬化するときに発ガスがほとんど無い物であ
ればよく、２液のエポキシ接着剤でもよい。ただし、加
温処理が必要なほど高粘度の熱硬化型の接着剤は、加温
放置工程で硬化が促進するため使用することはできな
い。The adhesive is not limited to the ultraviolet curable type, but may be a visible light curable type as long as it produces almost no gas when being cured, and may be a two-component epoxy adhesive. However, a thermosetting adhesive having a viscosity high enough to require a heating treatment cannot be used because the curing is accelerated in the heating and leaving step.

【００２１】ここで、接着剤は、タッチパネル面だけで
はなく、液晶表示素子面にも塗布しておいても構わな
い。ただし、気泡の混入を防ぐため、液晶表示素子面に
は薄く均一に塗布しておく必要がある。Here, the adhesive may be applied not only to the touch panel surface but also to the liquid crystal display element surface. However, in order to prevent bubbles from being mixed in, it is necessary to apply it thinly and uniformly on the surface of the liquid crystal display element.

【００２２】また、透明接着剤を塗布する側は、液晶表
示素子だけでもよい。このとき、紫外線硬化型の透明接
着剤を使用して、重ね合わせたとき下側となるタッチス
イッチ側から紫外線を照射する場合は、石英ガラス等の
透明台の上で貼り合わせを行い、透明接着剤が充填して
から石英ガラスごしに紫外線を照射する。Further, the side to which the transparent adhesive is applied may be only the liquid crystal display element. At this time, when ultraviolet rays are radiated from the touch switch side, which is the lower side when superposed by using a UV-curable transparent adhesive, perform bonding on a transparent base such as quartz glass and make transparent adhesion. After the agent is filled, the quartz glass is irradiated with ultraviolet rays.

【００２３】（実施例４）図６は本発明によるタッチス
イッチ付表示装置を有する電子装置の実施例で、タッチ
スイッチ面をペンで入力することにより液晶表示画面に
生じる表示むらを、専用ペンを使用することで防止す
る。すなわち、透明タッチスイッチと液晶表示素子を透
明接着剤で面接着した表示装置にペン等を用いて入力す
る電子装置において、約２００〜３００ｇ以上の力がペ
ン先よりタッチスイッチに加わると、接着剤を介して働
く力により液晶表示装置の画面に表示むらが発生する恐
れがある。そこで、表示むらが発生する２００ｇ以上の
力を吸収する機構、つまり、タッチスイッチに２００ｇ
以上の力が加わらない機構を有するペンを用いることと
した。(Embodiment 4) FIG. 6 is an embodiment of an electronic device having a display device with a touch switch according to the present invention, in which display unevenness caused on a liquid crystal display screen by inputting the touch switch surface with a pen is prevented by a dedicated pen. Prevent by using. That is, in an electronic device for inputting with a pen or the like to a display device in which a transparent touch switch and a liquid crystal display element are surface-bonded with a transparent adhesive, when a force of about 200 to 300 g or more is applied to the touch switch from the pen tip, the adhesive Display unevenness may occur on the screen of the liquid crystal display device due to the force exerted via the. Therefore, a mechanism that absorbs the force of 200 g or more that causes display unevenness, that is, 200 g for the touch switch.
We decided to use a pen with a mechanism that does not apply the above force.

【００２４】すなわち、この専用ペン７はペン先８に２
００ｇ以上の力で収縮するばね９が内臓された構造であ
る。このペンによれば液晶表示素子に２００ｇ以上の力
が加わらないため、表示装置の画質を損なうことなくペ
ン入力が可能となる。ペンの構造は特にこれに限定する
ものではない。That is, the dedicated pen 7 has two
It has a structure in which a spring 9 that contracts with a force of 00 g or more is incorporated. According to this pen, since a force of 200 g or more is not applied to the liquid crystal display element, pen input is possible without impairing the image quality of the display device. The structure of the pen is not particularly limited to this.

【００２５】さらに、アナログ抵抗膜方式のタッチスイ
ッチの作動力は１５〜１００ｇなので、１００ｇ以上の
力で収縮するばねが内臓された構造の専用ペンを用いて
１００ｇ以上の力がタッチスイッチに加わらないように
構成しても、スイッチの動作に支障がないとともに、液
晶表示装置の画質を損なわない電子装置が実現できる。Further, since the operating force of the analog resistance film type touch switch is 15 to 100 g, a force of 100 g or more is not applied to the touch switch by using a dedicated pen having a structure in which a spring that contracts by a force of 100 g or more is incorporated. Even with such a configuration, it is possible to realize an electronic device that does not hinder the operation of the switch and that does not deteriorate the image quality of the liquid crystal display device.

【００２６】[0026]

【発明の効果】本発明によれば、以上説明したように透
明タッチスイッチを備えた表示装置の画質が向上し、ま
た、薄型化も可能となった。更に、面接着することで全
体的な強度が向上した。高価な設備投資がいらないため
安価に表示装置を提供できるようになった。As described above, according to the present invention, the image quality of the display device provided with the transparent touch switch is improved, and the display device can be made thinner. Furthermore, the overall strength was improved by surface-bonding. Since expensive equipment investment is not required, a display device can be provided at low cost.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明による表示装置の側面図である。FIG. 1 is a side view of a display device according to the present invention.

【図２】図１における液晶表示素子とタッチスイッチの
接着部の詳細断面図である。FIG. 2 is a detailed cross-sectional view of a bonded portion between the liquid crystal display element and the touch switch in FIG.

【図３】本発明による表示装置の製造方法を説明する模
式図である。FIG. 3 is a schematic diagram illustrating a method of manufacturing a display device according to the present invention.

【図４】本発明による表示装置の製造方法を説明するフ
ロー図である。FIG. 4 is a flowchart illustrating a method of manufacturing a display device according to the present invention.

【図５】液だれに凹凸が発生した場合を示す模式図であ
る。FIG. 5 is a schematic diagram showing a case where unevenness is generated in a liquid drop.

【図６】本発明による電子装置における専用ペンの断面
図である。FIG. 6 is a cross-sectional view of a dedicated pen in an electronic device according to the present invention.

【図７】従来のタッチスイッチ付き表示装置の側面図で
ある。FIG. 7 is a side view of a conventional display device with a touch switch.

【符号の説明】[Explanation of symbols]

１ａ，１ｂ 透明基板 ２ａ，２ｂ 光学フイルム ３ ドライバＩＣ ４ 透明タッチスイッチ ５ 透明接着剤 ５ａ 液だれ ６ 透明フィラー ７ 専用ペン ８ ペン先 ９ バネ １０ 両面粘着剤 １１ 液晶表示素子 1a, 1b Transparent substrate 2a, 2b Optical film 3 Driver IC 4 Transparent touch switch 5 Transparent adhesive 5a Liquid drip 6 Transparent filler 7 Special pen 8 Pen tip 9 Spring 10 Double-sided adhesive 11 Liquid crystal display element

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 透明タッチスイッチと液晶表示素子とを
備える表示装置において、 前記液晶表示素子の表示面と前記タッチスイッチの入力
領域の裏面との間に、透明接着剤を充填することによ
り、前記タッチスイッチと前記液晶表示素子が接着され
たことを特徴とする表示装置。1. A display device comprising a transparent touch switch and a liquid crystal display element, wherein a transparent adhesive is filled between the display surface of the liquid crystal display element and the back surface of the input area of the touch switch, A display device, wherein a touch switch and the liquid crystal display element are bonded together. 【請求項２】 前記透明接着剤に、透明フイラーが混入
していることを特徴とする請求項１記載の表示装置。2. The display device according to claim 1, wherein a transparent filler is mixed in the transparent adhesive. 【請求項３】 透明タッチスイッチの裏面もしくは液晶
表示素子の表示面のうち少なくとも一方に透明接着剤を
塗布する工程と、前記透明タッチスイッチと前記液晶表
示素子を位置あわせして重ねる工程と、前記液晶表示素
子と前記透明タッチスイッチとの間隙の少なくとも入力
領域に、前記透明接着剤を流動させて充填する工程と、
を有することを特徴とする表示装置の製造方法。3. A step of applying a transparent adhesive to at least one of the back surface of the transparent touch switch and the display surface of the liquid crystal display element, a step of aligning and overlaying the transparent touch switch and the liquid crystal display element, A step of flowing and filling the transparent adhesive in at least an input area of a gap between the liquid crystal display element and the transparent touch switch;
A method for manufacturing a display device, comprising: 【請求項４】 透明タッチスイッチに透明接着剤を塗布
する工程と、前記透明タッチスイッチを反転し、液晶表
示素子と位置あわせする工程と、 透明タッチスイッチを反転することにより透明接着剤に
発生する液だれを液晶表示素子に接触させる工程と、前
記液晶表示素子と前記透明タッチスイッチとの間隙の少
なくとも入力領域に、前記透明接着剤を流動させて充填
する工程と、を有することを特徴とする表示装置の製造
方法。4. A step of applying a transparent adhesive to the transparent touch switch, a step of reversing the transparent touch switch to align it with a liquid crystal display element, and a step of reversing the transparent touch switch to generate the transparent adhesive. A step of bringing a liquid drop into contact with the liquid crystal display element, and a step of causing the transparent adhesive to flow and fill at least an input region in a gap between the liquid crystal display element and the transparent touch switch. Manufacturing method of display device. 【請求項５】 液晶表示素子の表示面に透明接着剤を塗
布する工程と、前記液晶表示素子を反転し、透明タッチ
スイッチと位置あわせする工程と、 液晶表示素子を反転することにより透明接着剤に発生す
る液だれを前記透明タッチスイッチに接触させる工程
と、前記液晶表示素子と前記透明タッチスイッチとの間
隙の少なくとも入力領域に、前記透明接着剤を流動させ
て充填する工程と、を有することを特徴とする表示装置
の製造方法。5. A step of applying a transparent adhesive to the display surface of the liquid crystal display element, a step of reversing the liquid crystal display element and aligning it with a transparent touch switch, and a transparent adhesive by reversing the liquid crystal display element. And a step of causing the transparent adhesive to flow into at least an input region of a gap between the liquid crystal display element and the transparent touch switch, and bringing the liquid drop generated in the transparent touch switch into contact with the transparent touch switch. And a method of manufacturing a display device. 【請求項６】 透明タッチスイッチが少なくともその入
力領域面で面接着された表示装置と、前記タッチスイッ
チに加わる力を吸収する機構を有する入力ペンとを備え
ることを特徴とする電子装置。6. An electronic device comprising a transparent touch switch, a display device surface-bonded at least on an input area surface thereof, and an input pen having a mechanism for absorbing a force applied to the touch switch.
JP02551297A 1996-02-09 1997-02-07 Display device manufacturing method Expired - Lifetime JP3220403B2 (en)

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Application Number Priority Date Filing Date Title
JP8-24377 1996-02-09
JP2437796 1996-02-09
JP02551297A JP3220403B2 (en) 1996-02-09 1997-02-07 Display device manufacturing method

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JPH09274536A true JPH09274536A (en) 1997-10-21
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JP2015114852A (en) * 2013-12-11 2015-06-22 サンテックオプト株式会社 Image display device with touch sensor and manufacturing method of the same

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