JPS6330841U - - Google Patents

Info

Publication number
JPS6330841U
JPS6330841U JP1986125335U JP12533586U JPS6330841U JP S6330841 U JPS6330841 U JP S6330841U JP 1986125335 U JP1986125335 U JP 1986125335U JP 12533586 U JP12533586 U JP 12533586U JP S6330841 U JPS6330841 U JP S6330841U
Authority
JP
Japan
Prior art keywords
screen
transparent
liquid crystal
voltage
opaque
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
JP1986125335U
Other languages
Japanese (ja)
Other versions
JPH0521068Y2 (en
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 filed Critical
Priority to JP1986125335U priority Critical patent/JPH0521068Y2/ja
Publication of JPS6330841U publication Critical patent/JPS6330841U/ja
Application granted granted Critical
Publication of JPH0521068Y2 publication Critical patent/JPH0521068Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図：本考案ホワイトボード装置の斜視図、
第２図：同じくその作用説明図。 １ａ：スクリーン前板、１ｂ：スクリーン後板
、２：液晶カプセル積層体、３：光センサー、４
：マーカーなどの筆跡、５：投光像、６：電圧源
。 Figure 1: Perspective view of the whiteboard device of the present invention.
Fig. 2: Also a diagram explaining its action. 1a: Screen front plate, 1b: Screen rear plate, 2: Liquid crystal capsule laminate, 3: Optical sensor, 4
: Handwriting such as marker, 5: Projected image, 6: Voltage source.

Claims (1)

【実用新案登録請求の範囲】 オーバーヘツドプロジエクターを背面に配置し
たホワイトボード装置におけるスクリーンにおい
て、 半透明でマーカーなどで書けるように表面処理
された導電性ガラスあるいは導電性プラスチツク
からなるスクリーン前板１ａと、同じく透明の導
電性ガラスあるいは導電性プラスチツクからなる
スクリーン後板１ｂとの間に液晶を封入した微小
のカプセルを挟持してスクリーンを構成し、 この液晶は電圧をかけると、透明ないし半透明と
なり電圧を除くと、不透明ないし不透明に近くな
るものである ことを特徴とするスクリーン。[Scope of Claim for Utility Model Registration] A screen front plate 1a made of conductive glass or conductive plastic whose surface has been treated to be semi-transparent so that it can be written on with a marker, etc., in a screen for a whiteboard device with an overhead projector placed on the back. The screen is constructed by sandwiching a tiny capsule filled with liquid crystal between the screen back plate 1b, which is also made of transparent conductive glass or conductive plastic, and this liquid crystal becomes transparent or translucent when a voltage is applied. A screen characterized by being opaque or nearly opaque when voltage is removed.
JP1986125335U 1986-08-18 1986-08-18 Expired - Lifetime JPH0521068Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986125335U JPH0521068Y2 (en) 1986-08-18 1986-08-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986125335U JPH0521068Y2 (en) 1986-08-18 1986-08-18

Publications (2)

Publication Number Publication Date
JPS6330841U true JPS6330841U (en) 1988-02-29
JPH0521068Y2 JPH0521068Y2 (en) 1993-05-31

Family

ID=31018147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986125335U Expired - Lifetime JPH0521068Y2 (en) 1986-08-18 1986-08-18

Country Status (1)

Country Link
JP (1) JPH0521068Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003094886A (en) * 2001-09-21 2003-04-03 Ricoh Co Ltd Writable display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS474331U (en) * 1971-02-06 1972-09-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS474331U (en) * 1971-02-06 1972-09-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003094886A (en) * 2001-09-21 2003-04-03 Ricoh Co Ltd Writable display device
JP4533566B2 (en) * 2001-09-21 2010-09-01 株式会社リコー Writable display device

Also Published As

Publication number Publication date
JPH0521068Y2 (en) 1993-05-31

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