JPS58149524A - Electronic apparatus - Google Patents

Electronic apparatus

Info

Publication number
JPS58149524A
JPS58149524A JP57030814A JP3081482A JPS58149524A JP S58149524 A JPS58149524 A JP S58149524A JP 57030814 A JP57030814 A JP 57030814A JP 3081482 A JP3081482 A JP 3081482A JP S58149524 A JPS58149524 A JP S58149524A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
solar cell
display element
segments
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
JP57030814A
Other languages
Japanese (ja)
Other versions
JPS6240729B2 (en
Inventor
Kazuhito Ozawa
小沢　一仁
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP57030814A priority Critical patent/JPS58149524A/en
Publication of JPS58149524A publication Critical patent/JPS58149524A/en
Publication of JPS6240729B2 publication Critical patent/JPS6240729B2/ja
Granted 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13324—Circuits comprising solar cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Landscapes

  • Liquid Crystal (AREA)
  • Power Sources (AREA)
  • Calculators And Similar Devices (AREA)
  • Photovoltaic Devices (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To make the apparatus small-sized, by arranging a solar battery at the back of liquid crystal display elements and allowing the solar battery to function as a reflective plate, in the electronic apparatus having the solar battery and liquid crystal display elements. CONSTITUTION:A proper number of shutter segments 15 are provided in addition to character segments 14 in a liquid crystal display part. Shutter segments 15 are lit and extinguished selectively in acordance with the display state. Thus, the quantity of incident light to a solar bettery 4 is kept constant approximately.

Description

【発明の詳細な説明】 本発明は、電源として太陽電池を有し且つ表示部として
液晶表示素子を有する電子機器（電子式卓上計算機、電
子式時計等）に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device (electronic desktop calculator, electronic watch, etc.) that has a solar cell as a power source and a liquid crystal display element as a display section.

従来の電子機器は、第１図に示すように太陽電池１と液
晶表示部２とを同一平面上に配する構成としていた。し
たがって、機器が大型化するという問題点があった。A conventional electronic device has a configuration in which a solar cell 1 and a liquid crystal display section 2 are arranged on the same plane, as shown in FIG. Therefore, there was a problem that the equipment became larger.

本発明は上記問題点を解決することを目的としてなされ
たものであり、液晶表示素子の背後に太陽電池を配し、
該太陽電池を上記液晶表示素子の反射板として機能させ
る構成とすることにより機器の小型化をはかったもので
ある。The present invention has been made with the aim of solving the above problems, and includes a solar cell placed behind a liquid crystal display element,
The device is made smaller by configuring the solar cell to function as a reflector for the liquid crystal display element.

そして、液晶表示素子の背後に太陽電池を設けることに
より新たに発生する問題点である、液晶表示素子の表示
状態により太陽電池への入射光量が変動するという問題
点は、上記液晶表示素子内に文字セグメントとは別に適
当数のシャッターセグメントを設けて、該シャッターセ
グメントを上記表示状態に応じて選択的に点灯捷だは非
点灯とする構成を採用することにより解決して、上記太
陽電池への入射光量を表示状態にかかわらず略一定とす
るようにしているものである。すなわち、点灯文字セグ
メント数が多くなるに従ってシャッターセグメント点灯
数を減少させ、また点灯文字セグメント数が少なくなる
に従ってシャッターセグメント点灯数を増加させるよう
にしているものである。A new problem that arises when a solar cell is installed behind a liquid crystal display element is that the amount of light incident on the solar cell fluctuates depending on the display state of the liquid crystal display element. This problem can be solved by providing an appropriate number of shutter segments in addition to the character segments, and adopting a configuration in which the shutter segments are selectively turned on or off depending on the display state, and the solar cell The amount of incident light is kept approximately constant regardless of the display state. That is, as the number of lit character segments increases, the number of shutter segments lit is decreased, and as the number of lit character segments decreases, the number of shutter segments lit is increased.

以下実施例を説明する。Examples will be described below.

第２図は本発明の一実施例の主要部を示す平面図である
。また、第３図は第２図に於けるＡ−Ａ’線断面骨を示
す断面図である。FIG. 2 is a plan view showing the main parts of an embodiment of the present invention. Moreover, FIG. 3 is a sectional view showing the cross-sectional bone taken along the line AA' in FIG. 2.

図に示すように、液晶表示素子３の背後に太陽電池４を
配する構成としている。As shown in the figure, a solar cell 4 is arranged behind a liquid crystal display element 3.

液晶表示素子としてゲストホスト型液晶表示素子を用い
た場合の構成を第４図に示す。図に於て、５はガラス基
板、６はシール材、７はゲストホスト液晶、８は透明導
電膜である。FIG. 4 shows a configuration in which a guest-host type liquid crystal display element is used as the liquid crystal display element. In the figure, 5 is a glass substrate, 6 is a sealing material, 7 is a guest-host liquid crystal, and 8 is a transparent conductive film.

また、液晶表示素子としてＴＮ−ＦＥＭ液晶表示素子を
用いた場合の構成を第５図に示す。図に於て、９はガラ
ス基板、ＩＯはシール材、１１はＦＥＭ液晶、１２は透
明導電膜、１３は偏光板である。Further, FIG. 5 shows a configuration when a TN-FEM liquid crystal display element is used as the liquid crystal display element. In the figure, 9 is a glass substrate, IO is a sealing material, 11 is an FEM liquid crystal, 12 is a transparent conductive film, and 13 is a polarizing plate.

第２図に示すように、液晶表示部内には文字セグメント
１４に加えて、シャッターセグメント５が設けられてい
る。文字セグメントを点灯させると光が遮られるため、
点灯文字セグメント数に応じて太陽電池４への入射光量
が変化する。この変化をできるだけ小さくし、太陽電池
４への入射光量を略一定に保つために、点灯文字セグメ
ント数に応じて、上記シャッターセグメントを選択的に
点灯または非点灯とする。As shown in FIG. 2, in addition to the character segments 14, a shutter segment 5 is provided within the liquid crystal display section. Lighting up a character segment blocks the light, so
The amount of light incident on the solar cell 4 changes depending on the number of lit character segments. In order to minimize this change and keep the amount of light incident on the solar cell 4 substantially constant, the shutter segments are selectively turned on or off depending on the number of lit character segments.

第６図に、点灯文字セグメントが少なく上記シャッター
セグメントをすべて点灯させたときの状態を、まだ、第
７図に、点灯文字セグメントが多く上記シャッターセグ
メントをすべて非点灯としたときの状態を示す。FIG. 6 shows a state when there are few lit character segments and all of the shutter segments are lit, and FIG. 7 shows a state when there are many lit character segments and all of the shutter segments are not lit.

上記の中間の状態に於ては、シャッターセグメントの点
灯数は１乃至５の範囲で適宜設定される。In the above intermediate state, the number of shutter segments lit is appropriately set in the range of 1 to 5.

以上詳細に説明したように本発明によれば、太陽電池を
電源とする液晶表示式電子機器の小型化を達成すること
ができるものである。As described in detail above, according to the present invention, it is possible to downsize a liquid crystal display type electronic device using a solar cell as a power source.

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

第１図及び第２図は平面図、第３図乃至第５図は断面図
、第６図及び第７図は平面図である。 符号の説明 ３：液晶表示素子、４：太陽電池、１４：文字セグメン
ト、１５：シャッターセグメント。1 and 2 are plan views, FIGS. 3 to 5 are sectional views, and FIGS. 6 and 7 are plan views. Explanation of symbols 3: Liquid crystal display element, 4: Solar cell, 14: Character segment, 15: Shutter segment.

Claims (1)

【特許請求の範囲】[Claims] １、電源として太陽電池を有し、且つ表示部として液晶
表示素子を有する電子機器に於て、上記液晶表示素子の
背後に上記太陽電池を配し、該太陽電池を」＝記液晶表
示素子の反射板として機能させると共に、上記液晶表示
素子内に、該液晶表示素子に於ける表示状態に応じて上
記太陽電池への入射光量が変動するのを防止するだめの
シャッターセグメントを別途設け、該シャッターセグメ
ントを上記表示状態に応じて選択的に点灯まだは非点灯
とすることにより上記太陽電池への入射光量を上記表示
状態にかかわらず略一定とするようにしたことを特徴と
する電子機器。1. In an electronic device having a solar cell as a power source and a liquid crystal display element as a display section, the solar cell is arranged behind the liquid crystal display element, and the solar cell is used as "=" of the liquid crystal display element. A shutter segment is separately provided in the liquid crystal display element to function as a reflector and to prevent the amount of light incident on the solar cell from varying depending on the display state of the liquid crystal display element, and the shutter An electronic device characterized in that the amount of light incident on the solar cell is made substantially constant regardless of the display state by selectively lighting up and not lighting the segments depending on the display state.
JP57030814A 1982-02-26 1982-02-26 Electronic apparatus Granted JPS58149524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57030814A JPS58149524A (en) 1982-02-26 1982-02-26 Electronic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57030814A JPS58149524A (en) 1982-02-26 1982-02-26 Electronic apparatus

Publications (2)

Publication Number Publication Date
JPS58149524A true JPS58149524A (en) 1983-09-05
JPS6240729B2 JPS6240729B2 (en) 1987-08-29

Family

ID=12314155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57030814A Granted JPS58149524A (en) 1982-02-26 1982-02-26 Electronic apparatus

Country Status (1)

Country Link
JP (1) JPS58149524A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5523776A (en) * 1995-01-10 1996-06-04 International Business Machines Corporation Photovoltaic array for computer display
WO2000037995A1 (en) * 1998-12-22 2000-06-29 Citizen Watch Co., Ltd. Liquid crystal display device with power generating function
EP1143311A1 (en) * 1998-12-22 2001-10-10 Citizen Watch Co. Ltd. Timepiece
US7864151B1 (en) 1986-07-07 2011-01-04 Semiconductor Energy Laboratory Co., Ltd. Portable electronic device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123274A (en) * 1976-04-08 1977-10-17 Citizen Watch Co Ltd Timepiece driven by solar battery
JPS5396876A (en) * 1977-02-02 1978-08-24 Ricoh Watch Electronic wristwatch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123274A (en) * 1976-04-08 1977-10-17 Citizen Watch Co Ltd Timepiece driven by solar battery
JPS5396876A (en) * 1977-02-02 1978-08-24 Ricoh Watch Electronic wristwatch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7864151B1 (en) 1986-07-07 2011-01-04 Semiconductor Energy Laboratory Co., Ltd. Portable electronic device
US5523776A (en) * 1995-01-10 1996-06-04 International Business Machines Corporation Photovoltaic array for computer display
WO2000037995A1 (en) * 1998-12-22 2000-06-29 Citizen Watch Co., Ltd. Liquid crystal display device with power generating function
EP1143311A1 (en) * 1998-12-22 2001-10-10 Citizen Watch Co. Ltd. Timepiece
EP1143311A4 (en) * 1998-12-22 2002-08-28 Citizen Watch Co Ltd Timepiece
US7136138B1 (en) 1998-12-22 2006-11-14 Citizen Watch Co., Ltd. Liquid crystal display device

Also Published As

Publication number Publication date
JPS6240729B2 (en) 1987-08-29

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