JPH01296289A - Liquid crystal display device incorporating power source - Google Patents
Liquid crystal display device incorporating power sourceInfo
- Publication number
- JPH01296289A JPH01296289A JP63125899A JP12589988A JPH01296289A JP H01296289 A JPH01296289 A JP H01296289A JP 63125899 A JP63125899 A JP 63125899A JP 12589988 A JP12589988 A JP 12589988A JP H01296289 A JPH01296289 A JP H01296289A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- battery
- board
- solar cell
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 41
- 239000000758 substrate Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- BLBNEWYCYZMDEK-UHFFFAOYSA-N $l^{1}-indiganyloxyindium Chemical compound [In]O[In] BLBNEWYCYZMDEK-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal Display Device Control (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、太陽電池からなる液晶駆動用電源を内蔵した
電源内蔵液晶表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a liquid crystal display device with a built-in power supply, which has a built-in power supply for driving a liquid crystal formed of a solar cell.
（従来技術）
液晶表示デバイスは、薄い、消費電力が少ない、駆動電
圧が低くて済む等の利点を有し、電卓、時計、ワードプ
ロセッサ、カメラ等におけるデイスプレィに多く使用さ
れている。そして、液晶表示デバイスをデイスプレィと
して使用したもののなかには交換や充電が不要な太陽電
池を電源として用いたものがあり、その代表例が電卓で
ある。(Prior Art) Liquid crystal display devices have advantages such as thinness, low power consumption, and low driving voltage, and are often used for displays in calculators, watches, word processors, cameras, and the like. Among the devices that use liquid crystal display devices as displays, there are devices that use solar cells as a power source, which do not require replacement or charging, and a typical example is a calculator.
第３図は、そのような従来の電卓の一例を示す斜視図で
ある。FIG. 3 is a perspective view showing an example of such a conventional calculator.
同図において、ａ、ａ、・・・・・・は操作キー、ｂは
液晶表示デバイスを用いたデイスプレィ（以後単に「液
晶デイスプレィ」と称する）、ｃは太陽電池である。In the figure, a, a, . . . are operation keys, b is a display using a liquid crystal display device (hereinafter simply referred to as "liquid crystal display"), and c is a solar cell.
（発明が解決しようとする問題点）
ところで、電卓等太陽電池を電源として内蔵した液晶デ
イスプレィを有する装置においても一般の電気製品と同
様に小型化が強く要求されている。(Problems to be Solved by the Invention) By the way, there is a strong demand for miniaturization in devices such as calculators that have a liquid crystal display that incorporates a solar cell as a power source, just as in general electrical products.
しかるに、従来の電卓等は、太陽電池Ｃが無視できない
程広い面積を占有するので、小型化の要求に応えること
に限界があった。However, in conventional calculators, etc., the solar cell C occupies a large area that cannot be ignored, so there is a limit to meeting the demand for miniaturization.
本発明はこのような問題を解決すべく為されたものであ
り、その目的とするところは、電源内蔵液晶表示装置の
小型化を図ることにある。The present invention has been made to solve these problems, and its purpose is to reduce the size of a liquid crystal display device with a built-in power supply.
（問題点を解決するための手段）
本発明は、上記問題点を解決するために、液晶表示板の
底面に該液晶表示板を透過した光を受けて液晶駆動用電
源電圧を発生する太陽電池を積層したことを特徴とする
ものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a solar cell mounted on the bottom surface of a liquid crystal display panel that receives light transmitted through the liquid crystal display panel and generates a power supply voltage for driving the liquid crystal. It is characterized by being laminated.
（作 用）
本発明によれば、液晶表示板と太陽電池が別々に広い面
積を占有せず、同じ部位に配設されるので、少なくとも
液晶表示板あるいは太陽電池が占有する面積分、液晶表
示装置の大きさを小さくすることができる。(Function) According to the present invention, the liquid crystal display board and the solar cell do not occupy a large area separately and are arranged in the same area, so that at least the area occupied by the liquid crystal display board or the solar cell is covered by the liquid crystal display. The size of the device can be reduced.
（実施例）
以下、本発明を、図示の実施例に従って詳細に説明する
。(Example) Hereinafter, the present invention will be described in detail according to the illustrated example.
第１図及び第２図は、本発明を電卓に適用した一つの実
施例を示すものであり、このうち、第１図は斜視図、第
２図は要部を示す断面図である。1 and 2 show one embodiment in which the present invention is applied to a calculator, of which FIG. 1 is a perspective view and FIG. 2 is a sectional view showing the main parts.
第１図に示す電卓は、キー１及びデイスプレィ２を有し
ており、このうちデイスプレィ２の部分には第２図に示
すように液晶表示板３と、該液晶表示板３の下側に積層
された太陽電池４が設けられている。この太陽電池４は
、液晶表示板３の駆動電源電圧を含む電卓全体の電源電
圧を発生する電源としての役割を果すものである。The calculator shown in FIG. 1 has keys 1 and a display 2, of which the display 2 has a liquid crystal display board 3 as shown in FIG. A solar cell 4 is provided. This solar cell 4 serves as a power source that generates a power supply voltage for the entire calculator, including a drive power supply voltage for the liquid crystal display panel 3.
第２図において、５は液晶表示板３のガラスからなる表
面透明板で、この裏面にはパターニングされた例えばＩ
ｎ２Ｏ，あるいはＳｉｎ、からなる透明電極６が形成さ
れている。７は液晶で、太陽電池４と上記表面透明板５
の間に充填されている。In FIG. 2, reference numeral 5 denotes a surface transparent plate made of glass of the liquid crystal display panel 3, and the back surface of this plate is patterned, for example, I
A transparent electrode 6 made of n2O or Sin is formed. 7 is a liquid crystal, which includes a solar cell 4 and the above transparent surface plate 5.
filled in between.
８は太陽電池４の表面に形成された上記透明電極６と同
様にパターニングされた例えばＩｎ２Ｏ，からなる透明
電極である。Reference numeral 8 denotes a transparent electrode made of, for example, In2O, which is patterned in the same manner as the transparent electrode 6 formed on the surface of the solar cell 4.
９は太陽電池４を構成するシリコンアモルファス基板で
、例えばｎ型である。１ｏは該ｎ型シリコンアモルファ
ス基板９の表面部にｐ型不純物を拡散することにより形
成されたＰ型層であり、シリコンアモルファス基板９と
でフォトダイオードを構成する。１１はｎ型シリコンア
モルファス基板１０の底面に形成された電極、１２は太
陽電池４を支持するやや厚肉で剛性を有する支持板であ
る。Reference numeral 9 denotes a silicon amorphous substrate constituting the solar cell 4, which is, for example, n-type. 1o is a P-type layer formed by diffusing p-type impurities into the surface of the n-type silicon amorphous substrate 9, and together with the silicon amorphous substrate 9 constitutes a photodiode. 11 is an electrode formed on the bottom surface of the n-type silicon amorphous substrate 10, and 12 is a slightly thick and rigid support plate that supports the solar cell 4.
この電卓は、液晶デイスプレィ２に光が入射すると、そ
の光は液晶表示板３を透過して太陽電池４に入射する。In this calculator, when light enters a liquid crystal display 2, the light passes through a liquid crystal display plate 3 and enters a solar cell 4.
該太陽電池４は、無バイアスのフォトダイードであり、
光が入射すると光電変換して起電力を発生する。この起
電力が電卓全体の電源電圧として用いられるのである。The solar cell 4 is a non-biased photodiode,
When light enters it, it performs photoelectric conversion and generates an electromotive force. This electromotive force is used as the power supply voltage for the entire calculator.
尚、デイスプレィ２の表示は、液晶表示板３の透明電極
８によって生じる干渉によって特定の色にすることがで
きる。即ち、透明電極８の膜厚によって干渉色を任意に
選択することができる。Note that the display on the display 2 can be displayed in a specific color by interference caused by the transparent electrode 8 of the liquid crystal display panel 3. That is, the interference color can be arbitrarily selected depending on the thickness of the transparent electrode 8.
尚、本実施例における液晶表示は、光を透過しない部分
を選択的につくって表示をなすものであり、太陽電池４
のその透過しない部分と対応したところには光が入射せ
ず、液晶表示内容により太陽電池４への入射量が若干少
なくなることはある。Note that the liquid crystal display in this embodiment displays by selectively creating a portion that does not transmit light, and the solar cell 4
No light is incident on a portion corresponding to the non-transparent portion, and the amount of light incident on the solar cell 4 may be slightly reduced depending on the content of the liquid crystal display.
しかし、液晶表示内容がどのようであっても光の透過す
る部分の広さの方が光の透過しない部分の広さよりも圧
倒的に広く、また、太陽電池４も表面全体に光が入射し
なくても表面の２分の１の広さのところに入射すれば充
分な起電力を発生し、充分な電流の供給を為し得る。従
って、液晶表示内容によって起電力が一定値以下になっ
たり、充分な電流が得られなくなって動作が異常になる
ことは回避することができる。However, no matter what the liquid crystal display content is, the area through which light passes is overwhelmingly wider than the area through which light does not pass, and the solar cell 4 also has light incident on its entire surface. Even if there is no electromotive force, enough electromotive force can be generated and a sufficient current can be supplied if the beam is incident on one-half the area of the surface. Therefore, it is possible to avoid abnormal operation due to the electromotive force becoming below a certain value or insufficient current being obtained depending on the contents displayed on the liquid crystal display.
このような電卓は、第３図に示した従来の電卓と比較し
て明らかなようにデイスプレィと太陽電池とが別個に場
所を占有することがないので、大幅に小型化することが
できる。また、電卓の外形状を従来と同程度とした場合
には、従来、太陽電池が配設されていた部位に、他の機
能部材を有効に配設することができる。例えば、液晶表
示面積を大きくして、表示文字を大きくすれば表示を見
易くすることができるし、表示内容を増やせば、機能の
拡大を図ることもできる。As is clear from the conventional calculator shown in FIG. 3, such a calculator can be significantly miniaturized because the display and the solar cell do not occupy separate space. Further, when the external shape of the calculator is made comparable to that of the conventional calculator, other functional members can be effectively disposed in the area where the solar cell was conventionally disposed. For example, by increasing the liquid crystal display area and making the displayed characters larger, the display can be made easier to read, and by increasing the display content, the functions can be expanded.
尚１本発明は、上述の実施例に限定されるものではなく
、その要旨を逸脱しない範囲内で種々の変形実施が可能
であることは勿論である。例えば、上記実施例は、本発
明を電卓に適用したものであったが、必らずしもそれに
限定されず、例えば時計等にも適用することができる。Note that the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the present invention is applied to a calculator, but the present invention is not necessarily limited thereto, and can be applied to, for example, a watch.
もっとも、時計に適用した場合には、夜間など外光レベ
ルが著しく低下して起電力が低下しても計時動作を中断
させないために、太ＶｊＩｆｆｌ池とは別に電池が必要
になる。しかし、別途に電池を用いても太陽電池との併
用によって当該電池の交換頻度を非常に少なくすること
ができるので、本発明の時計への適用にも大きな意義が
ある。また、透明電極６，８を、時計の文字板の機能を
もたせるようにパターニングしてもよい。However, when applied to a watch, a battery is required in addition to the large VjIffl battery in order to prevent the timekeeping operation from being interrupted even when the electromotive force decreases due to a significant drop in external light level, such as at night. However, even if a separate battery is used, the frequency of replacing the battery can be greatly reduced by using it in combination with a solar cell, so the application of the present invention to a watch is also of great significance. Furthermore, the transparent electrodes 6 and 8 may be patterned so as to function as a clock face.
以上の説明から明らかなように、本発明によれば、液晶
表示板と太陽電池が積層されるので、電池内蔵液晶表示
装置の小型化を図ることができる。As is clear from the above description, according to the present invention, since the liquid crystal display plate and the solar cell are stacked, it is possible to reduce the size of the battery-equipped liquid crystal display device.
第１図および第２図は、本発明を電卓に適用した一つの
実施例を示すもので、第１図は斜視図。
第２図は要部を示す断面図、第３図は、従来例を示す斜
視図である。
１・・・・・キー、 ２・・・・・・デイ
スプレィ、３・・・・・・液晶表示板、 ４・・・
・・・太陽電池、５・・・・・・表面透明板、
６，８・・・・・・透明電極、７・・・・・・液晶、
９・・・・・・シリコンアモルファス基板、１０・・・
・・・ｐ型層、 １１・・・・・・電極、１２
・・・・・・支持板。1 and 2 show one embodiment in which the present invention is applied to a calculator, and FIG. 1 is a perspective view. FIG. 2 is a sectional view showing a main part, and FIG. 3 is a perspective view showing a conventional example. 1...Key, 2...Display, 3...Liquid crystal display board, 4...
...Solar cell, 5...Transparent surface plate,
6, 8...Transparent electrode, 7...Liquid crystal, 9...Silicon amorphous substrate, 10...
... p-type layer, 11 ... electrode, 12
・・・・・・Support plate.
Claims (1)
受けて液晶駆動用電源電圧を発生する太陽電池を積層し
たことを特徴とする電源内蔵液晶表示装置。(1) A liquid crystal display device with a built-in power supply, characterized in that a solar cell is laminated on the bottom surface of a liquid crystal display plate for receiving light transmitted through the liquid crystal display plate and generating a power supply voltage for driving the liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63125899A JPH01296289A (en) | 1988-05-25 | 1988-05-25 | Liquid crystal display device incorporating power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63125899A JPH01296289A (en) | 1988-05-25 | 1988-05-25 | Liquid crystal display device incorporating power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01296289A true JPH01296289A (en) | 1989-11-29 |
Family
ID=14921663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63125899A Pending JPH01296289A (en) | 1988-05-25 | 1988-05-25 | Liquid crystal display device incorporating power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01296289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011597A1 (en) * | 1999-08-04 | 2001-02-15 | Optiva, Inc. | Data display module |
| JP2008134661A (en) * | 2008-02-14 | 2008-06-12 | Toppan Printing Co Ltd | Reflective display with solar battery attached thereto |
-
1988
- 1988-05-25 JP JP63125899A patent/JPH01296289A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011597A1 (en) * | 1999-08-04 | 2001-02-15 | Optiva, Inc. | Data display module |
| JP2008134661A (en) * | 2008-02-14 | 2008-06-12 | Toppan Printing Co Ltd | Reflective display with solar battery attached thereto |
| JP4697239B2 (en) * | 2008-02-14 | 2011-06-08 | 凸版印刷株式会社 | Reflective display with solar cells |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4095217A (en) | Combined liquid crystal display and photovoltaic converter | |
| JP4520545B2 (en) | Reflective liquid crystal display device and manufacturing method thereof | |
| TW565812B (en) | Display assembly including an electro-optical cell and a photovoltaic cell | |
| US7136138B1 (en) | Liquid crystal display device | |
| US6556515B1 (en) | Watch with liquid crystal display panel | |
| JPH04190323A (en) | Liquid crystal display with solar battery cell | |
| JPH06508441A (en) | A horological piece that has an energy source and is composed of photovoltaic cells. | |
| CN110797420B (en) | Photoelectric conversion element, photoelectric conversion module, and electronic device | |
| JPH0968722A (en) | Liquid crystal panel | |
| JP5238433B2 (en) | Electronic clock with solar cell | |
| JPH01296289A (en) | Liquid crystal display device incorporating power source | |
| WO1998011473A1 (en) | Electronic watch with built-in solar cell | |
| JPH07159778A (en) | Reflection type color display device | |
| US10048533B2 (en) | Liquid crystal display and terminal | |
| JPH11142534A (en) | Dial especially for timepiece formed of solar cell | |
| JP2003289150A (en) | Solar battery unit | |
| JP2002148366A (en) | Electronic timepiece with solar cell | |
| JPH0443319A (en) | Liquid crystal display device | |
| CN110456627A (en) | A kind of smartwatch | |
| JPS599238Y2 (en) | Driving device for electrochromic display device | |
| JP2001015781A (en) | Solar battery for clock | |
| JP2001326368A (en) | Electronic apparatus provided with photoelectric transfer element | |
| JP2022023624A (en) | Timepiece with solar battery and dial for timepiece | |
| JPS5922683Y2 (en) | Electronic clock with calculator | |
| JP2005136531A (en) | Transparent solar battery attached mobile phone |