JPH0477780A - Display device - Google Patents

Display device

Info

Publication number
JPH0477780A
JPH0477780A JP19137990A JP19137990A JPH0477780A JP H0477780 A JPH0477780 A JP H0477780A JP 19137990 A JP19137990 A JP 19137990A JP 19137990 A JP19137990 A JP 19137990A JP H0477780 A JPH0477780 A JP H0477780A
Authority
JP
Japan
Prior art keywords
liquid crystal
contrast
display panel
crystal display
interlocking
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
JP19137990A
Other languages
Japanese (ja)
Inventor
Hiroyuki Miyoshi
裕之 三好
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19137990A priority Critical patent/JPH0477780A/en
Publication of JPH0477780A publication Critical patent/JPH0477780A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To automatically adjust the contrast of a liquid crystal display panel by interlocking with the change of the visual angle of a display part and to improve handleability by providing a contrast adjusting volume which acts by interlocking with the change of the visual angle of the liquid crystal display panel. CONSTITUTION:A rotary shaft 14 is rotated by interlocking with a tiltable display part 11 and the contrast adjusting volume 15 is adjusted. As a result, the resistance of the adjusting volume is changed and liquid crystal driving voltage VDD-VO is changed so as to adjust the contrast. Thus, the contrast of the surface of the liquid crystal panel is automatically adjusted by interlocking with the change of the visual angle.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、液晶駆動表示方式を用いた表示装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display device using a liquid crystal drive display method.

（従来の技術） 従来の液晶駆動表示方式の表示装置は第５〜７図に示す
様に、液晶表示パネルは可倒式表示部に取付けられ、そ
の視角は変更可能となっているが、液晶表示パネルのコ
ントラスト調整ボリュームはパネルの横の表示部に取イ
１けられ、手動で操作するようになっている。第５〜７
図中、第５図は従来の表示装置の斜視図で、２１は可倒
式の表示部、２２は液晶表示パネル、２３はコントラス
ト調整部である。また第６図は、コントラスト調整部２
３の拡大図、第７図は、フントラスト調整部２３０回路
を示す図である。第５図において、可倒式の表示部２１
の視角を変更した場合、コントラスト調整部２３の調整
用ボｊＪｚ−ム２４を手動で調整してコントラストを調
整する必要がある。すなわち第７図に示すように、調整
用ボリューム２４にて液晶駆動電圧ＶＤＤ−ＶＯを変更
してコントラストを調整する。(Prior art) As shown in Figures 5 to 7, in a conventional display device using a liquid crystal drive display method, a liquid crystal display panel is attached to a foldable display section, and its viewing angle can be changed. The display panel's contrast adjustment volume is mounted on a display on the side of the panel and can be operated manually. 5th to 7th
In the figure, FIG. 5 is a perspective view of a conventional display device, in which 21 is a foldable display section, 22 is a liquid crystal display panel, and 23 is a contrast adjustment section. In addition, FIG. 6 shows the contrast adjustment section 2.
3 is an enlarged view of FIG. 7, which is a diagram showing the fund trust adjustment section 230 circuit. In FIG. 5, a foldable display unit 21
When the viewing angle is changed, it is necessary to manually adjust the adjustment knob 24 of the contrast adjustment section 23 to adjust the contrast. That is, as shown in FIG. 7, the contrast is adjusted by changing the liquid crystal drive voltage VDD-VO using the adjustment volume 24.

（発明が解決しようとする課題） このような従来の表示装置では、視角を変更する度に、
コントラスト調整用ボリュームを手動にて、変更しなけ
ればならないという欠点がある。(Problems to be Solved by the Invention) In such conventional display devices, each time the viewing angle is changed,
There is a drawback that the contrast adjustment volume must be changed manually.

本発明の課題は、かかる欠点を解消し、視角変更に連動
して液晶表示パネルのコアトラストが自動的に調整され
使い易い表示装置を提供することにある。An object of the present invention is to eliminate such drawbacks and provide an easy-to-use display device in which the core trust of a liquid crystal display panel is automatically adjusted in conjunction with a change in viewing angle.

（課題を解決するための手段） 本発明は上記課題を解決するために、液晶表示パネルの
視角変更と連動して動作するコントラス調整ボリーーム
を設けた。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a contrast adjustment volume that operates in conjunction with changing the viewing angle of a liquid crystal display panel.

（作用） 本発明は、上記した構成により液晶表示パネルの視角を
変更させると、コントラスト調整用ボリュームも同時に
自動的変化して液晶駆動電圧をその視角に応じた最適な
コントラストとなるように変更するようにしたものであ
る。(Function) According to the present invention, when the viewing angle of the liquid crystal display panel is changed using the above-described configuration, the contrast adjustment volume is automatically changed at the same time, and the liquid crystal drive voltage is changed to provide the optimum contrast according to the viewing angle. This is how it was done.

（実施例） 以下、本発明をｔＪｃｌ〜４図に示す実施例に基づいて
説明する。(Example) Hereinafter, the present invention will be explained based on the example shown in tJcl~4.

第１図は実施例の表示装置を示す斜視図であり、図中１
１は可倒式の表示部、１２は液晶表示パネル、１３はコ
ントラスト調整部である。また第２図は、コントラスト
調整部１３の拡大図、第３図はボリューム１５の背面図
、第４図はコントラスト調整部の回路を示す図である。FIG. 1 is a perspective view showing a display device according to an embodiment.
1 is a foldable display section, 12 is a liquid crystal display panel, and 13 is a contrast adjustment section. 2 is an enlarged view of the contrast adjustment section 13, FIG. 3 is a rear view of the volume 15, and FIG. 4 is a diagram showing the circuit of the contrast adjustment section.

第１図において、７ｉＪ倒式の表示部１１の視角を変更
した場合、第２図に示すように可倒式の表示部１１に連
動して回転軸１４が回転し、第３図に示す様にコントラ
スト調整用ボリューム１５が調整さｊｔｓ第４図に示す
ように、調整用ボリー−ムの抵抗が変化して、液晶駆動
電圧ＶＤＤ−ＶＯを変更してコントラストが調整される
。In FIG. 1, when the viewing angle of the 7iJ foldable display unit 11 is changed, the rotating shaft 14 rotates in conjunction with the foldable display unit 11 as shown in FIG. As shown in FIG. 4, the contrast adjustment volume 15 is adjusted, and the contrast is adjusted by changing the resistance of the adjustment volume and changing the liquid crystal drive voltage VDD-VO.

（発明の効果） 以上詳細に説明したように本発明によれば、可倒式の表
示部の視角変更に連動して液晶表示パネルのコントラス
ト調整が自動的に行われ、使い易いものにできたという
効果がある。(Effects of the Invention) As described in detail above, according to the present invention, the contrast of the liquid crystal display panel is automatically adjusted in conjunction with the change in viewing angle of the foldable display section, making it easy to use. There is an effect.

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

第１図は、本発明実施例の表示装置を示す斜視図、第２
図はコントラスト調整部の一部切欠拡犬図、第３図はコ
ントラスト調整用ボリュームの背面図、第４図はコント
ラスト調整部の回路図、第５図は従来の表示装置を示す
斜視図、第６図は同装置のコントラスト調整部を示す拡
大図、第７図はコントラスト調整部を示す回路図である
。 １１．２１：表示部 １２．２２：液晶表示パネル １３．２３：　コントラスト調整部 １４：回転軸 １５．２４：　コントラスト調整用ボリューム性　　許 出　　願 人 松下電器産業株式会社 代　　理 人FIG. 1 is a perspective view showing a display device according to an embodiment of the present invention, and FIG.
3 is a rear view of the contrast adjustment volume, FIG. 4 is a circuit diagram of the contrast adjustment section, and FIG. 5 is a perspective view of a conventional display device. FIG. 6 is an enlarged view showing the contrast adjustment section of the same device, and FIG. 7 is a circuit diagram showing the contrast adjustment section. 11.21: Display section 12.22: Liquid crystal display panel 13.23: Contrast adjustment section 14: Rotation axis 15.24: Volumetric property for contrast adjustment Applicant Matsushita Electric Industrial Co., Ltd. Agent

Claims (1)

【特許請求の範囲】[Claims] １）表示面に対する視角を変更可能とした液晶表示パネ
ルを備え、同液晶表示パネルの視角変更に連動して作動
するコントラスト調整ボリュームを設け、液晶表示パネ
ルの視角に応じて同コントラスト調整ボリュームの抵抗
値が変化して最適なコントラストに自動調整することを
特徴とする表示装置。1) Equipped with a liquid crystal display panel that can change the viewing angle with respect to the display surface, and equipped with a contrast adjustment volume that operates in conjunction with changing the viewing angle of the liquid crystal display panel, and the resistance of the contrast adjustment volume is adjusted according to the viewing angle of the liquid crystal display panel. A display device that automatically adjusts to the optimum contrast by changing the value.
JP19137990A 1990-07-19 1990-07-19 Display device Pending JPH0477780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19137990A JPH0477780A (en) 1990-07-19 1990-07-19 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19137990A JPH0477780A (en) 1990-07-19 1990-07-19 Display device

Publications (1)

Publication Number Publication Date
JPH0477780A true JPH0477780A (en) 1992-03-11

Family

ID=16273617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19137990A Pending JPH0477780A (en) 1990-07-19 1990-07-19 Display device

Country Status (1)

Country Link
JP (1) JPH0477780A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9266379B2 (en) 2007-02-26 2016-02-23 The Pilot Ink Co., Ltd. Thermochromic writing instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9266379B2 (en) 2007-02-26 2016-02-23 The Pilot Ink Co., Ltd. Thermochromic writing instrument

Similar Documents

Publication Publication Date Title
JP2856710B2 (en) Liquid crystal display
KR20040096097A (en) Display apparatus of stand type
JP2002346032A (en) Game display device
JPH0477780A (en) Display device
JP3899448B2 (en) Surveying collimation direction control device
JP3871905B2 (en) Projector device
JPS63311319A (en) Variable wavelength filter
JPS62128832A (en) Omnidirectional wheel
JP3678176B2 (en) Display device
JPH0736402A (en) Device for adjusting contrast
JPS60117291A (en) Liquid crystal display unit
JP3626212B2 (en) Surveying collimation direction control device
JPH04153690A (en) Applied voltage adjustment device for liquid crystal display device
JPH02267585A (en) Panel display controller
CN219828367U (en) Interactive projector convenient for adjusting inclination angle
JPH10232622A (en) Planar display device
CN216976377U (en) Liquid crystal display with conveniently-adjusted visual angle
JPS58168036A (en) Liquid crystal display
JP2995742B2 (en) Liquid crystal display device
JPH09179517A (en) Liquid crystal display controller for processing information
KR19990054458A (en) Speaker sound direction adjusting device of electronic products
KR19990033587U (en) bilateral monitor
JPS58137509A (en) Electric drill
KR100351818B1 (en) Device for adjustment of tilt angle of camera for refrigerator
JPH0916284A (en) Lcd-rotated notebook type personal computer