JPS58168036A - Liquid crystal display - Google Patents

Liquid crystal display

Info

Publication number
JPS58168036A
JPS58168036A JP5006682A JP5006682A JPS58168036A JP S58168036 A JPS58168036 A JP S58168036A JP 5006682 A JP5006682 A JP 5006682A JP 5006682 A JP5006682 A JP 5006682A JP S58168036 A JPS58168036 A JP S58168036A
Authority
JP
Japan
Prior art keywords
liquid crystal
circuit
observer
crystal panel
visual
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
JP5006682A
Other languages
Japanese (ja)
Inventor
Hiroshi Kurihara
宏 栗原
Tadashi Matsuda
松田　忠
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5006682A priority Critical patent/JPS58168036A/en
Publication of JPS58168036A publication Critical patent/JPS58168036A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To enable automatic adjustment to a visual angle position, by providing a control circuit for liquid crystal driving voltage which stores the data of the driving voltages of each liquid crystal panel in such a way as to locate the observer's visual point position within the optimum visual angle position of each liquid crystal panel. CONSTITUTION:A D/A converter 6 for supplying of voltage operated with a storage circuit ROM7 is connected to a driving circuit 3 for driving each liquid crystal panel 1. The observer's visual point position signal A and the detection signal from a temp. sensor 8 which detects the ambient temp. of a liquid crystal display 2 are inputted to the circuit 7. The horizontal distance l0 from the obsever's visual point position up to the liquid crystal panels and the distances l1-l4 between the respective liqui crystal panels are constant. Thus, if the height H of the observer's visual point is determined, the visual angles phi1-phi5 of the liquid crystal panels are determined; therefore, the data of such driving voltages at which the angles phi1-phi5 attain the optimum visual angles of the respective liquid crystal panels are stored beforehand in the circuit 7. In the stage of use, the signal A corresponding to the height H of the observer's visual point position is inputted to said circuit and the optimum driving voltages are supplied to the respective panels 1.

Description

【発明の詳細な説明】 （１）発明の技術分野 本発明は液晶表示装置に関し、特に液晶駆動電圧により
最適視角位置が変化する液晶からなる液晶表示装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device comprising a liquid crystal whose optimum viewing angle position changes depending on a liquid crystal drive voltage.

（２）技術の背景 ＴＮ形液晶パネル等は視角特性を有し、ツクネル面に対
し特定の最適視角範囲内でのみ液晶表示が良好に観察で
きる。このような液晶ノ（ネルの視角特性は液晶駆動電
圧により変化する。複数の視角特性を有する液晶パネル
からなる液晶表示装置においてＦｉ、各液晶パネルの最
適視角位置が観察者の視点と一致するように各液晶パネ
ルの駆動電圧を調整して観察者が全ての液晶パネルの表
示を同時に良好に観察できるようにしなければならない
。(2) Background of the Technology TN type liquid crystal panels and the like have viewing angle characteristics, and the liquid crystal display can be observed satisfactorily only within a specific optimum viewing angle range with respect to the Tsukune plane. The viewing angle characteristics of such a liquid crystal panel change depending on the liquid crystal drive voltage. In a liquid crystal display device consisting of liquid crystal panels having multiple viewing angle characteristics, Fi is set so that the optimal viewing angle position of each liquid crystal panel coincides with the viewer's viewpoint. It is necessary to adjust the driving voltage of each liquid crystal panel so that the viewer can observe the display on all the liquid crystal panels simultaneously.

（３）従来技術と問題点 複数の視角特性を有する液晶パネルからなる液晶表示装
置の従来の構成を第１図に示す。５個・の視角特性を有
する液晶パネル１からなる液晶表示装置２の各液晶パネ
ル１は駆動回路３を介して表示制御回路５に連結される
。表示制御回路５は各駆動回路３に駆動信号暑および各
液晶パネル１に表示すべき表示データ信号ｂ−ｆを送出
する。(3) Prior Art and Problems FIG. 1 shows a conventional configuration of a liquid crystal display device comprising a liquid crystal panel having multiple viewing angle characteristics. Each liquid crystal panel 1 of a liquid crystal display device 2 consisting of five liquid crystal panels 1 having viewing angle characteristics is connected to a display control circuit 5 via a drive circuit 3. The display control circuit 5 sends a drive signal to each drive circuit 3 and a display data signal bf to be displayed on each liquid crystal panel 1.

各液晶パネル１に表示データ信号ｂ−ｆに基いてデータ
を表示するための液晶駆動電圧は可変抵抗器４を介して
電源Ｖより駆動回路３に与えられる。A liquid crystal drive voltage for displaying data on each liquid crystal panel 1 based on display data signals b-f is applied to the drive circuit 3 from a power supply V via a variable resistor 4.

従って、この駆動電圧は各液晶パネル毎に可変抵抗器４
の調整により所望の値に設定可能である。Therefore, this driving voltage is determined by the variable resistor 4 for each liquid crystal panel.
It can be set to a desired value by adjusting .

このような構成の液晶表示装置において、各液晶パネル
１の視角φ１〜φ６が高さＨの観察者の視点に対し最適
視角となるようにするためには各液晶パネル１に対応し
た５個の可変抵抗器４をそれぞれ調整しなければならず
、視点の高さＨが変るたびに面倒な視角調整操作を繰返
さなければならない。In a liquid crystal display device having such a configuration, in order to ensure that the viewing angles φ1 to φ6 of each liquid crystal panel 1 are optimal viewing angles with respect to the viewpoint of an observer at a height H, five panels corresponding to each liquid crystal panel 1 are required. The variable resistors 4 must be adjusted individually, and the troublesome viewing angle adjustment operation must be repeated every time the height H of the viewpoint changes.

（４）発明の目的 本発明はＬ紀従来技術の欠点に鑑みなされたものであっ
て、観察者の視点位置に応じて複数の液晶パネルの視角
を同時に観察者の視点に対し最適視角位置となるように
自動調整可能な液晶表示装置の提供を目的とする。(4) Purpose of the Invention The present invention was made in view of the shortcomings of the prior art. The purpose of the present invention is to provide a liquid crystal display device that can be automatically adjusted to achieve the desired results.

（５）発明の構成 この目的を達成するため本発明では、複数の視角特性を
有する液晶パネルを具備する液晶表示装置１において、
観察者の視点位置を各液晶パネルの最適視角範囲内圧位
置せしめる。各液晶パネルの駆動電圧のデータを記憶し
た液晶駆動電圧制御回路を備えている。(5) Structure of the Invention In order to achieve this object, the present invention provides a liquid crystal display device 1 including a liquid crystal panel having a plurality of viewing angle characteristics.
The observer's viewpoint position is positioned within the optimum viewing angle range of each liquid crystal panel. It is equipped with a liquid crystal drive voltage control circuit that stores drive voltage data for each liquid crystal panel.

（６）発明の実施例 第２図は本発明に係る液晶表示装置の構成図である。第
１図の装置と同−又は対応する部材には同一番号を記し
説明を省略する。各液晶パネル１ｔ−駆動するための駆
動回路３には記憶回路（ＲＯＭ）７′ｆｔ介して作動す
る電圧供給用Ｄ／Ａ変換器６が連結される。記憶回路７
には観察者の視点位置信号Ａおよび液晶表示装置２の周
囲温度を検知する温度センサ８からの検知信号が入力さ
れる。観察者の視点位置から液晶パネルまでの水平距離
Ｊｌｏおよび各液晶パネル間の距離１．〜Ｌ４は一定で
ある。従って、観察者の視点の高さＨが定まれば各液晶
パネルの視角φｌ〜φＳが定まる。このときの視角φｌ
〜φｉが各液晶パネルの最適視角となるような駆動電圧
のデータを予め記憶回路７に台記憶させておく。使用時
には観察者の視点位置の高さＨに対応した信号Ａを入力
させること忙より、記憶回路７により各液晶パネルの最
適視角と１１１□ 視点位置が一致するような駆動電圧が各液晶パネルごと
に選定されさらに周囲温度に基く温度補正全行ってＤ／
Ａ変換器６を介して最適な駆動電圧が各液晶パネルｌに
供給される。(6) Embodiment of the Invention FIG. 2 is a block diagram of a liquid crystal display device according to the invention. Components that are the same as or correspond to those in the device shown in FIG. 1 are designated by the same numbers and their explanations will be omitted. A voltage supply D/A converter 6 operating through a memory circuit (ROM) 7'ft is connected to the drive circuit 3 for driving each liquid crystal panel 1t. Memory circuit 7
An observer's viewpoint position signal A and a detection signal from a temperature sensor 8 that detects the ambient temperature of the liquid crystal display device 2 are input to the input terminal 1 . Horizontal distance Jlo from the observer's viewpoint position to the liquid crystal panel and distance between each liquid crystal panel1. ~L4 is constant. Therefore, once the height H of the observer's viewpoint is determined, the viewing angles φl to φS of each liquid crystal panel are determined. Visual angle φl at this time
Drive voltage data such that ~φi is the optimum viewing angle for each liquid crystal panel is stored in advance in the memory circuit 7. During use, since the signal A corresponding to the height H of the observer's viewpoint position is inputted, the memory circuit 7 sets a driving voltage for each liquid crystal panel so that the optimum viewing angle and the viewpoint position of each liquid crystal panel coincide with each other. D/
An optimal drive voltage is supplied to each liquid crystal panel l via the A converter 6.

なお、視点位置を定めるデータは高さＨのみに限らず、
高さＨおよび液晶パネルからの距離ｎ。Note that the data that determines the viewpoint position is not limited to only the height H.
Height H and distance n from the liquid crystal panel.

の相方を視点位置信号として記憶回路に入力させてもよ
い。may be input to the storage circuit as a viewpoint position signal.

（７）　　発明の詳細 な説明したように１本発明に係る液晶表示装置１ｌｌｖ
ｃおいては、観察者の視点位置に応じて各液晶パネルの
最適視角が観察者の視角と一致するような駆動電圧のデ
ータを予めＲＯＭに記憶させ、使用時ＶＣはこのＲＯＭ
に視点位置データを入力させることにより各液晶パネル
を同時に観察者からの視角が最適の視角となるような駆
動電圧で駆動することができる丸め、各液晶パネルごと
の視角調整は不一となり使用性が向上する。(7) As described in detail of the invention, the liquid crystal display device 1llv according to the present invention
In c, drive voltage data such that the optimum viewing angle of each liquid crystal panel matches the viewing angle of the viewer according to the viewpoint position of the viewer is stored in advance in the ROM, and when in use, the VC is stored in this ROM.
By inputting viewpoint position data, each LCD panel can be simultaneously driven with a driving voltage that provides the optimal viewing angle from the observer.The viewing angle adjustment for each LCD panel is uneven, making it easier to use. will improve.

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

＠１図は従来の液晶表示装置の構成図、第２図は１本発
明に係る液晶表示装置の構成図である。 １・・・液晶パネル、　　　２・・・液晶表示装置。 ３・・・駆動回路、　　　　５・・・表示制御回路。 ６・・・Ｄ／Ａ変喚Ｉ！、　　　７・・・記憶回路。 特許出願人 富士通株式会社 特許出願代理人 弁理士　青　木　　　　朗 弁理士　西　舘　和　之 弁理士　内　１）辛　男 弁理士　山　口　昭　之1 is a block diagram of a conventional liquid crystal display device, and FIG. 2 is a block diagram of a liquid crystal display device according to the present invention. 1...Liquid crystal panel, 2...Liquid crystal display device. 3... Drive circuit, 5... Display control circuit. 6...D/A Henkan I! , 7...Memory circuit. Patent applicant Fujitsu Ltd. Patent agent Akira Aoki Patent attorney Kazuyuki Nishidate 1) Shino Patent attorney Akira Yamaguchi

Claims (1)

【特許請求の範囲】 １、複数の視角特性を有する液晶ノ（ネルを具備する液
晶表示装置において、観察者の視点位置を各液晶パネル
の最適視角範囲内に位置せ【７める。 各液晶パネルの駆動電圧のデータを記憶した液晶駆動電
圧制御回路を備えたことを特徴とする液晶表示装置。[Claims] 1. In a liquid crystal display device equipped with a liquid crystal panel having a plurality of viewing angle characteristics, an observer's viewpoint position is located within the optimum viewing angle range of each liquid crystal panel. A liquid crystal display device comprising a liquid crystal drive voltage control circuit that stores panel drive voltage data.
JP5006682A 1982-03-30 1982-03-30 Liquid crystal display Pending JPS58168036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5006682A JPS58168036A (en) 1982-03-30 1982-03-30 Liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5006682A JPS58168036A (en) 1982-03-30 1982-03-30 Liquid crystal display

Publications (1)

Publication Number Publication Date
JPS58168036A true JPS58168036A (en) 1983-10-04

Family

ID=12848614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5006682A Pending JPS58168036A (en) 1982-03-30 1982-03-30 Liquid crystal display

Country Status (1)

Country Link
JP (1) JPS58168036A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232622A (en) * 1986-04-03 1987-10-13 Sharp Corp Matrix type liquid crystal panel device
JPS62232621A (en) * 1986-04-03 1987-10-13 Sharp Corp Liquid crystal display device
JPS6351317U (en) * 1986-09-22 1988-04-07

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232622A (en) * 1986-04-03 1987-10-13 Sharp Corp Matrix type liquid crystal panel device
JPS62232621A (en) * 1986-04-03 1987-10-13 Sharp Corp Liquid crystal display device
JPS6351317U (en) * 1986-09-22 1988-04-07

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