JPH0364734A - Visual field adjusting device for liquid crystal display device - Google Patents

Visual field adjusting device for liquid crystal display device

Info

Publication number
JPH0364734A
JPH0364734A JP20091689A JP20091689A JPH0364734A JP H0364734 A JPH0364734 A JP H0364734A JP 20091689 A JP20091689 A JP 20091689A JP 20091689 A JP20091689 A JP 20091689A JP H0364734 A JPH0364734 A JP H0364734A
Authority
JP
Japan
Prior art keywords
switches
operation key
liquid crystal
crystal display
switch
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
JP20091689A
Other languages
Japanese (ja)
Inventor
Takashi Ichikawa
隆 市川
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP20091689A priority Critical patent/JPH0364734A/en
Publication of JPH0364734A publication Critical patent/JPH0364734A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE:To easily enable water-proofing even when an operation key are arranged nearby the liquid crystal display device by switching one of switches to a close circuit by a switch changeover part with the signal of the operation key and applying a specific voltage to the electric resistance value of a selected voltage input line. CONSTITUTION:The respective switches 6 - 9 are connected to the switch changeover part 19 connected to the operation key 20 which inputs signals corresponding to the switches. The switch changeover part 19 switches one of the switches to the closed circuit corresponding to the signal inputted from the operation key 20, so a voltage determined with the selected voltage input line among lines 2 - 5 is applied to the visual field angle adjusting voltage input side of the liquid crystal display device 1. The visual field angle is therefore adjustable, the changeover of the switch is controlled by the switch changeover part 19 without any operator's intervention, and the operation key 20 for commanding the operation can be operated by simple pressing operation. Consequently, even when the surface is covered with a soft sheet, the operation key is operated and even when the operation key is arranged nearby the liquid crystal display device, the water-proofing countermeasure can easily be taken with the sheet.

Description

【発明の詳細な説明】 本発明は、液晶表示器の視野角調整装置に関する。[Detailed description of the invention] The present invention relates to a viewing angle adjustment device for a liquid crystal display.

従来の技術 第3図に示すように、液晶表示器1に電源23からの電
圧を印加して画(象を表示する場合に、電源23からの
電圧を可変抵抗24により変圧して液晶表示器1の視野
角調整電圧入力側に印加し、この視野角調整電圧の変化
により視野角を調整し、液晶表示器1の表示状態を見易
1・1状態に維持するようにした視野角調整装置がある
BACKGROUND ART As shown in FIG. 3, when a voltage from a power supply 23 is applied to a liquid crystal display 1 to display an image, the voltage from the power supply 23 is transformed by a variable resistor 24 to convert the voltage from a power supply 23 to the liquid crystal display. A viewing angle adjusting device which is applied to the viewing angle adjusting voltage input side of No. 1, adjusts the viewing angle by changing the viewing angle adjusting voltage, and maintains the display state of the liquid crystal display device 1 in an easy-to-see 1.1 state. There is.

発明が解決しようとする課題 可変抵抗24を操作するには摘みを外部に露出させる必
要がある。一般に、可変抵抗24はボリュウムに見られ
るようにダイヤルタイプの摘みを有し、操作パネルの内
力に取付【づられて本)可動軸は摘みを取付けるために
操作パネルから突出されている。したがって、液晶表示
器を電子秤等の表示装置として使用した場合には、生鮮
食料品を計量する頻度も高く、その生鮮食料品から流れ
落ちる水滴が可動軸を伝わり可変抵抗24の内部を浸す
ことがある。
Problems to be Solved by the Invention In order to operate the variable resistor 24, it is necessary to expose the knob to the outside. Generally, the variable resistor 24 has a dial-type knob as seen in a volume control panel, and a movable shaft is attached to the internal force of the operating panel and protrudes from the operating panel for mounting the knob. Therefore, when the liquid crystal display is used as a display device for an electronic scale or the like, fresh foods are frequently weighed, and water droplets falling from the fresh foods may travel along the movable shaft and soak the inside of the variable resistor 24. be.

課題を解決するための手段 それぞれ電気抵抗値が異なる接続ライン中にスイッチを
含む複数の電圧入力ラインを液晶表示器の視野角調整電
圧入力側と電源との間に接続し、前記スイッチの数に対
応する信号を入力する操作キーに接続されたスイッチ切
替部に前記スイッチのそれぞれを接続した。
Means for Solving the Problem A plurality of voltage input lines each including a switch in the connection line having a different electric resistance value are connected between the viewing angle adjustment voltage input side of the liquid crystal display and the power supply, and the number of the switches is Each of the switches was connected to a switch changeover section connected to an operation key for inputting a corresponding signal.

作用 操作キーを操作することにより、この操作キーから出力
された信号に対応してスイッチ切替部がスイッチの一つ
を閉路に切り替えるため、選択された電圧入力ラインの
電気抵抗値に定められた電圧を液晶表示器の視野角調整
電圧入力側に印加することができ、これにより、視野角
を調整することができ、また、スイッチの切り替えは人
手によらずスイッチ切替部により制御され、スイッチ切
替部の動作を指令する操作キーは単純な押圧動作で操作
することができるため、表面を柔軟性のシートで覆って
も操作することができ、これにより、操作キーを液晶表
示器の近傍に配置してもシートにより容易に防水対策を
施すことができる。
By operating the action operation key, the switch changeover unit switches one of the switches to a closed circuit in response to the signal output from this operation key, so that the voltage determined by the electrical resistance value of the selected voltage input line is set. can be applied to the viewing angle adjustment voltage input side of the liquid crystal display, thereby making it possible to adjust the viewing angle.In addition, switching of the switch is controlled by the switch changeover unit without manual intervention, and the switch changeover unit The operation keys that command operations can be operated with a simple press motion, so they can be operated even if the surface is covered with a flexible sheet.This allows the operation keys to be placed near the LCD display. However, waterproofing measures can be easily applied to the sheet.

実施例 本発明の一実施例を第1図及び第2図に基づいて説明す
る。第1図は電子回路図で、図中、lは電源23に駆動
される液晶表示器である。この液晶表示器1の視野角調
整電圧入力側には複数の電圧入力ライン2,3,4,5
.が接続されている。
Embodiment An embodiment of the present invention will be explained based on FIGS. 1 and 2. FIG. 1 is an electronic circuit diagram, in which l represents a liquid crystal display driven by a power source 23. A plurality of voltage input lines 2, 3, 4, 5 are provided on the viewing angle adjustment voltage input side of the liquid crystal display 1.
.. is connected.

これらの電圧入力ライン2,3,4.5にはそれぞれス
イッチ6.7,8.9が接続されている。
Switches 6.7 and 8.9 are connected to these voltage input lines 2, 3 and 4.5, respectively.

また、電源23には抵抗10,11,12,13゜14
が直列に接続され、抵抗10と抵抗11との間に前記ス
イッチ6が接続され、抵抗11と抵抗12との間に前記
スイッチ7が接続され、抵抗12と抵抗13との間に前
記スイッチ8が接続され、抵抗13と抵抗14との間に
前記スイッチ9が接続されている。すなわち、前記各電
圧入力ライン2.3,4.5は前記電源23までに直列
に接続される抵抗の数が異なり、したがって、電気抵抗
値も異なるものである。次いで、CPU15にプログラ
ムROM16と複数のl1017.18とが接続され、
一方のl1017には前記スイッチ6.7,8.9が接
続されたスイッチ切替部であるデコーダ19が接続され
ている。20は操作キーで、この操作キー20は第一の
キー21と第二のキー22とを有し、第一のキー21の
接点部と第二のキー22の接点部とが他方のl1018
に接続されている。
In addition, the power supply 23 includes resistors 10, 11, 12, 13°14
are connected in series, the switch 6 is connected between the resistors 10 and 11, the switch 7 is connected between the resistors 11 and 12, and the switch 8 is connected between the resistors 12 and 13. are connected, and the switch 9 is connected between the resistors 13 and 14. That is, each of the voltage input lines 2.3 and 4.5 has a different number of resistors connected in series up to the power source 23, and therefore has a different electrical resistance value. Next, the program ROM 16 and the plurality of l1017.18 are connected to the CPU 15,
One of the decoders 11017 is connected to a decoder 19, which is a switch switching section to which the switches 6.7 and 8.9 are connected. 20 is an operation key, and this operation key 20 has a first key 21 and a second key 22, and the contact part of the first key 21 and the contact part of the second key 22 are connected to the other l1018.
It is connected to the.

このような構成において、第2図に示すフローチャート
を参照してスイッチ6.7,8.9の切替動作を説明す
る。まず、デコーダ19に接続されたl1017の初期
設定がなされた後に、第一のキー21を押すと、l10
17の数値が最大(MAX)でない限りl1017の数
値に1を加算する。すなわち、l1017の数値がlの
時はスイッチ6がオンとなり、数値が2の時はスイッチ
7がオンとなり、数値が3の時はスイッチ8がオンとな
り、数値が4(最大)の時はスイッチ9がオンとなる。
In such a configuration, the switching operations of the switches 6.7 and 8.9 will be explained with reference to the flowchart shown in FIG. First, after the initial settings of the l1017 connected to the decoder 19 are made, when the first key 21 is pressed, the l10
Unless the value of 17 is the maximum (MAX), add 1 to the value of l1017. That is, when the value of l1017 is l, switch 6 is on, when the value is 2, switch 7 is on, when the value is 3, switch 8 is on, and when the value is 4 (maximum), switch is on. 9 is turned on.

このように、第一のキー21はオンするスイッチをスイ
ッチ6からスイッチ9に向けて順に変更するものである
。逆に、第二のキー22を押すと、l1017の数値が
ゼロでない限りl1017の数値から1を減算する。す
なわち、第二のキー21はオンにするスイッチをスイッ
チ9からスイッチ6に向けて順に変更するものである。
In this way, the first key 21 is used to sequentially change the switch to be turned on from switch 6 to switch 9. Conversely, when the second key 22 is pressed, 1 is subtracted from the value in l1017 unless the value in l1017 is zero. That is, the second key 21 is used to sequentially change the switch to be turned on from switch 9 to switch 6.

このように、選択されたスイッチ6.7,8゜9をオン
にすることにより、液晶表示器1に印加する視野角調整
電圧を変え、これにより、液晶表示器1の表示状態を見
易くすることができる。また、スイッチ6.7,8.9
の切り替えは人手によらずデコ・−ダニ9により制御さ
れ、デコーダ19の動作を指令する操作キー20は単純
な抑圧動作で操作するこεができるため、表面を柔軟性
のシートで覆っても操作することができ、これにより、
操作キー20を液晶表示器lの近傍に配置してもシート
により容易に防水対策を施すことができる。
In this way, by turning on the selected switches 6.7, 8.9, the viewing angle adjustment voltage applied to the liquid crystal display 1 is changed, thereby making the display state of the liquid crystal display 1 easier to see. I can do it. Also, switches 6.7, 8.9
The switching is controlled by the deco-tick 9 without manual intervention, and the operation key 20 that commands the operation of the decoder 19 can be operated by a simple suppression motion, so even if the surface is covered with a flexible sheet, This allows you to operate
Even if the operation keys 20 are placed near the liquid crystal display l, waterproof measures can be easily taken with the sheet.

発明の効果 本発明は上述のように構成したので、操作キ・−を操作
することにより、この操作キ・−から出力された信号に
対応してスイッチ切替部がスイッチの一つを閉路に切り
替えるため、選択された常圧入力ラインの電気抵抗値に
定められた電圧を液晶表示器の視野角調整電圧入力側に
印加することができ、スイッチの切り替えは人手によら
ずスイッチ切替部により制御され、スイッチ切替部の動
作を指令する操作キ・−は単純な抑圧動作で操作するこ
ヒができるため、表面を柔軟性のシートで覆っても操作
することができ、これにより、操作キーを液晶表示器の
近傍に配置してもシ・−トにより容易に防水対策を施す
ことができる等の効果を有する7
Effects of the Invention Since the present invention is configured as described above, by operating the operation key -, the switch changeover unit switches one of the switches to a closed circuit in response to a signal output from the operation key -. Therefore, a voltage determined by the electrical resistance value of the selected normal pressure input line can be applied to the viewing angle adjustment voltage input side of the liquid crystal display, and the switching is controlled by the switch changeover unit without manual intervention. The operation keys, which command the operation of the switch changeover section, can be operated with a simple suppression motion, so they can be operated even if the surface is covered with a flexible sheet. Even when placed near the display, it has the effect of being able to easily take waterproof measures with a sheet7.

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

第1図は本発明の一実施例を示す電子回路図、第2図は
そのスイッチの切替動作を示すフローチャート、第3図
は従来例を示す電子回路図である。 1・・・液晶表示器、2〜5・・・電圧入力ライン、6
〜9・・・スイッチ、19・・・スイッチ切替部、2o
・・・操作スイッチ、23・・・電源
FIG. 1 is an electronic circuit diagram showing one embodiment of the present invention, FIG. 2 is a flowchart showing the switching operation of the switch, and FIG. 3 is an electronic circuit diagram showing a conventional example. 1...Liquid crystal display, 2-5...Voltage input line, 6
~9...Switch, 19...Switch switching section, 2o
...Operation switch, 23...Power supply

Claims (1)

【特許請求の範囲】[Claims] 液晶表示器と、複数のスイッチと、それぞれ電気抵抗値
が異なる接続ライン中に前記スイッチを含んで前記液晶
表示器の視野角調整電圧入力側と電源とを接続する複数
の電圧入力ラインと、前記スイッチの数に対応する信号
を入力する操作キーと、この操作キーと各前記スイッチ
との間に接続されたスイッチ切替部とよりなり、前記操
作キーから出力された信号に対応して前記スイッチ切替
部により前記スイッチの一つを閉路に切り替えるように
したことを特徴とする液晶表示器の視野角調整装置。
a liquid crystal display, a plurality of switches, a plurality of voltage input lines including the switches in connection lines each having a different electrical resistance value and connecting a viewing angle adjustment voltage input side of the liquid crystal display to a power source; It consists of an operation key that inputs a signal corresponding to the number of switches, and a switch switching unit connected between this operation key and each of the switches, and switches the switch in response to the signal output from the operation key. A viewing angle adjustment device for a liquid crystal display, characterized in that one of the switches is switched to a closed circuit by the section.
JP20091689A 1989-08-02 1989-08-02 Visual field adjusting device for liquid crystal display device Pending JPH0364734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20091689A JPH0364734A (en) 1989-08-02 1989-08-02 Visual field adjusting device for liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20091689A JPH0364734A (en) 1989-08-02 1989-08-02 Visual field adjusting device for liquid crystal display device

Publications (1)

Publication Number Publication Date
JPH0364734A true JPH0364734A (en) 1991-03-20

Family

ID=16432409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20091689A Pending JPH0364734A (en) 1989-08-02 1989-08-02 Visual field adjusting device for liquid crystal display device

Country Status (1)

Country Link
JP (1) JPH0364734A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655190U (en) * 1992-12-28 1994-07-26 ヤマハ株式会社 Effect imparting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655190U (en) * 1992-12-28 1994-07-26 ヤマハ株式会社 Effect imparting device

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