JPS62153835A - Liquid crystal element - Google Patents

Liquid crystal element

Info

Publication number
JPS62153835A
JPS62153835A JP60294015A JP29401585A JPS62153835A JP S62153835 A JPS62153835 A JP S62153835A JP 60294015 A JP60294015 A JP 60294015A JP 29401585 A JP29401585 A JP 29401585A JP S62153835 A JPS62153835 A JP S62153835A
Authority
JP
Japan
Prior art keywords
liquid crystal
electrodes
heating
substrate
common
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
JP60294015A
Other languages
Japanese (ja)
Inventor
Kohei Saito
孝平 斉藤
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP60294015A priority Critical patent/JPS62153835A/en
Publication of JPS62153835A publication Critical patent/JPS62153835A/en
Pending legal-status Critical Current

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  • Liquid Crystal (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

PURPOSE:To heat a liquid crystal efficiently and uniformly to adjust temperature accurately and to suppress the increase of the thickness by forming a heating electrode on the inside face of a substrate. CONSTITUTION:A pair of heating electrodes 23 and 23 which are arranged on the outside of common electrodes 22 and 22 and have certain electric resis tance are formed on the inside face of a common electrode substrate 12 in parallel with common electrodes 22 and 22. A metallic film consisting of chro mium or the like is stuck to transparent conductive materials consisting of indium oxide or the like to constitute heating electrodes 23 and 23 similarly to common electrodes 22 and 22. When power is supplied to heating electrodes 23 and 23, a liquid crystal 15 is heated and is kept at 40+ or -2-5 deg.C proper tempera ture by the balance between this heating and cooling due to a temperature reducing device. Thus, the molecule arrangement of the liquid crystal 15 is changed quickly to secure a good responsiveness.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は光書込み式プリンタの光書込みヘッドなどに
用いられる液晶素子に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a liquid crystal element used in an optical writing head of an optical writing printer.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

光書込み式プリンタは、光源からの光を光書込みヘッド
の液晶素子で制御し、この液晶素子を透過した光線を感
光ドラムの表面に光点として照射して光書込みを行ない
、この光書込みにより形成された感光ドラム表面の静電
潜像をトナーにより現像し、この現像したトナー像を記
録用紙に転写し、さらにこの転写像を定着してプリント
像に仕上げるものである。
Optical writing printers control light from a light source with a liquid crystal element in an optical writing head, and perform optical writing by irradiating the light beam that passes through the liquid crystal element as a light spot on the surface of a photosensitive drum. The electrostatic latent image on the surface of the photosensitive drum is developed with toner, the developed toner image is transferred to recording paper, and the transferred image is further fixed to form a printed image.

このような光書込み式プリンタの光書込みヘッドに用い
られる液晶素子は、速やかな応答性が要求される関係で
、動作温度マージンが少なく、このため液晶層の温度を
調整して常時適温に保つことが必要となる。そこで、従
来においては、第5図および第6図に示すように、液晶
素子における信号電極基板1の外面に温度調整用ヒータ
2を接着剤3で貼り付け、このヒータ2による加熱と図
示しない降温装置による冷却とのバランスで液晶を一定
の温度に保つようにしている。なお、4は支持板、5は
この支持板4の内面に取付けられた抵抗発熱体、6は液
晶素子における共通電極基板、7はこの共通電極基板6
の外面に接着剤8を介して取付けられた偏光板である。
The liquid crystal element used in the optical writing head of such an optical writing printer is required to have quick response, so there is a small operating temperature margin, so it is necessary to adjust the temperature of the liquid crystal layer to keep it at an appropriate temperature at all times. Is required. Therefore, in the past, as shown in FIGS. 5 and 6, a temperature adjustment heater 2 is attached to the outer surface of the signal electrode substrate 1 in the liquid crystal element with an adhesive 3, and the heating by the heater 2 and the temperature decrease (not shown) are performed. The liquid crystal is kept at a constant temperature in balance with the cooling provided by the device. In addition, 4 is a support plate, 5 is a resistance heating element attached to the inner surface of this support plate 4, 6 is a common electrode substrate in the liquid crystal element, and 7 is this common electrode substrate 6
This is a polarizing plate attached to the outer surface of the camera via an adhesive 8.

しかしながらこのような従来の手段においては、信号電
極基板1の外面に温度調整用ヒータ2が配置するから、
信号電極基板1と共通電極基板6との間に介在する液晶
に対する熱の伝導が悪く、このため液晶を効率よく均一
に加熱して温度を的確に調整することが困難で、また温
度調整用ヒータ2の配置により液晶素子の厚さが増大し
、さらに液晶素子と別個に温度調整用ヒータ2を構成し
、これをいちいち信号電極基板1の外面に貼り付けなく
てはならないから、製造の能率性が低下し、またコスト
がアップしてしまう難点があった。
However, in such conventional means, since the temperature adjustment heater 2 is arranged on the outer surface of the signal electrode substrate 1,
Heat conduction to the liquid crystal interposed between the signal electrode substrate 1 and the common electrode substrate 6 is poor, making it difficult to efficiently and uniformly heat the liquid crystal and adjust the temperature accurately, and the temperature adjustment heater 2 increases the thickness of the liquid crystal element, and furthermore, the temperature adjustment heater 2 must be constructed separately from the liquid crystal element and attached to the outer surface of the signal electrode substrate 1 each time, which reduces manufacturing efficiency. However, there was a problem in that the performance decreased and the cost increased.

〔発明の目的〕[Purpose of the invention]

この発明はこのような点に着目してなされたもので、そ
の目的とするところは、液晶を効率よく均一に加熱して
的確な温度調整を図ることができるとともに、厚さの増
大を抑えて薄型に構成でき、かつ能率的で安価な製造を
達成することができるようにした液晶素子を提供するこ
とにある。
This invention was made with attention to these points, and its purpose is to efficiently and uniformly heat the liquid crystal to achieve accurate temperature control, while also suppressing the increase in thickness. It is an object of the present invention to provide a liquid crystal element that can be constructed thinly and can be manufactured efficiently and at low cost.

〔発明の概要〕[Summary of the invention]

すなわちこの発明は、透明な一対の、2!仮を液晶を挟
んで互いに対向配置し、その一方の基板の内面に第1の
電極を、他方の基板の内面に第2の電極をそれぞれ形成
し、これら第1および第2の電極の対向間で光の透過を
制御するシャッタ部を構成してなるものにおいて、上記
他方の基板の内面に発熱電極を形成するようにしたもの
である。
In other words, this invention provides a transparent pair of 2! A first electrode is formed on the inner surface of one of the substrates, a second electrode is formed on the inner surface of the other substrate, and a gap between the opposing first and second electrodes is formed. In this device, a heating electrode is formed on the inner surface of the other substrate.

〔発明の実施例〕[Embodiments of the invention]

以下、この発明の一実施例について第1図ないし第3図
を参照して説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

図中11および12はそれぞれ透明なガラス板からなる
一対の基板で、これら基板11.12は横長枠状の外側
シール材13a1およびこの外側シール材13aの両側
辺部の内側に形成された互いに平行な一対の内側シール
材13b 、  13bを介して互いに接着されている
。内側シール材13b、13bの両端部は、それぞれ外
側シール材13aの両側辺部に一体につながっており、
基板11.12間で、かつ外側シール材13aと内側シ
ール材13b 、  13bとで囲まれた部分は空気の
封入空間14.14となりでいる。内側シール材13b
、13b間の狭幅部は、外側シール材13aの両端部の
広幅部と連通し、基板11゜12間の上記狭幅部および
広幅部内には液晶15が充填されている。この液晶15
は外側シール材13aに設けた液晶注入孔16から注入
され、注入後に液晶注入孔16が封止材17で封止され
ている。
In the figure, reference numerals 11 and 12 denote a pair of substrates each made of a transparent glass plate. They are bonded to each other via a pair of inner sealing materials 13b, 13b. Both ends of the inner sealing materials 13b, 13b are integrally connected to both sides of the outer sealing material 13a,
The area between the substrates 11 and 12 and surrounded by the outer sealing material 13a and the inner sealing materials 13b and 13b becomes an air sealed space 14.14. Inner seal material 13b
, 13b communicates with the wide parts at both ends of the outer sealing material 13a, and the liquid crystal 15 is filled in the narrow part and the wide part between the substrates 11 and 12. This liquid crystal 15
is injected from a liquid crystal injection hole 16 provided in the outer sealing material 13a, and after injection, the liquid crystal injection hole 16 is sealed with a sealing material 17.

上記一方の基板11(以下、信号電極基板という)の内
面には、内側シール材13b、13b間の狭幅部内に、
その全長に亙って多数の信号電極18・・・が並列して
形成され、これら信号電極18・・・からは交互に信号
電極基板11の一側部側および他側部側にリード19・
・・が並列して導出し、さらにこれらリード19・・・
の先端に端子20・・・が形成されている。これら信号
電極18・・・、リード19・・・、端子20・・・は
、酸化インジュウムなどの透明導電材料により一体に信
号電極基板11の内面に形成されたもので、これらの電
極のうち、信号電極18のシャッタ部Sに対応した部分
を除いた部分、およびリード19の上にはクロム等の金
属膜24が接着されている。
On the inner surface of one of the substrates 11 (hereinafter referred to as the signal electrode substrate), in the narrow part between the inner sealing materials 13b, 13b,
A large number of signal electrodes 18 are formed in parallel over the entire length, and leads 19 are alternately connected to one side and the other side of the signal electrode substrate 11 from these signal electrodes 18.
... are derived in parallel, and further these leads 19...
A terminal 20 is formed at the tip of the terminal. These signal electrodes 18..., leads 19..., terminals 20... are integrally formed on the inner surface of the signal electrode substrate 11 from a transparent conductive material such as indium oxide, and among these electrodes, A metal film 24 made of chromium or the like is bonded to a portion of the signal electrode 18 other than a portion corresponding to the shutter portion S and on the lead 19.

他方の基板12(以下、共通電極基板という)の内面に
は、信号電極基板11の各信号電極18・・・に対向し
て一対の帯状の共通電極22.22が、共通電極基板1
2の長手方向沿いに平行に微小間隔をもって酸化インジ
ュウムなどの透明導電材料により形成され、これら共通
電極22.22の上にはシャッタ部Cに対応する部分を
除いてクロム等の金属膜25が接着されている。そして
信号電極18・・・と共通電極22.22との対向部分
で光の透過を制御するシャッタ部S・・・が構成されて
いる。さらにこの共通電極基板12の内面には、共通電
極22.22の外側に配置して一定の電気抵抗をもつ一
対の発熱電極23.23が共通電極22.22と並列し
て形成されている。これら発熱電極23.23は、例え
ば共通電極22.22と同様に、酸化インジュウムなど
の透明導電材料の上にクロム等の金属膜を接着して構成
されている。
On the inner surface of the other substrate 12 (hereinafter referred to as the common electrode substrate), a pair of band-shaped common electrodes 22, 22 are provided opposite to each signal electrode 18 of the signal electrode substrate 11.
The common electrodes 22 and 22 are formed of a transparent conductive material such as indium oxide at minute intervals in parallel with each other along the longitudinal direction of the common electrodes 22 and 22, and a metal film 25 of chromium or the like is adhered on top of these common electrodes 22 and 22, except for the portion corresponding to the shutter portion C. has been done. A shutter section S for controlling transmission of light is formed by the opposing portion of the signal electrodes 18 and the common electrodes 22 and 22. Further, on the inner surface of the common electrode substrate 12, a pair of heating electrodes 23.23 are formed in parallel with the common electrode 22.22, and are arranged outside the common electrode 22.22 and have a certain electric resistance. These heating electrodes 23.23, for example, like the common electrode 22.22, are constructed by adhering a metal film such as chromium onto a transparent conductive material such as indium oxide.

なお、上記金属膜24は信号電極18およびリード19
の電気抵抗を小さくするために設けられたもので、また
上記金属膜25は共通電極22の電気抵抗を小さくする
ためと、シャッタ部Sの光透過面積を規制するために設
けられたもので、第3図に示す25a・・・が金属膜2
5の空位の光透過部(共通電極22が露出する部分)で
ある。さらに第1図に示す26.26はシール材13b
Note that the metal film 24 is connected to the signal electrode 18 and the lead 19.
The metal film 25 is provided to reduce the electrical resistance of the common electrode 22 and to regulate the light transmission area of the shutter section S. 25a shown in FIG. 3 is the metal film 2
This is the vacant light transmitting portion No. 5 (the portion where the common electrode 22 is exposed). Furthermore, 26.26 shown in FIG. 1 is a sealing material 13b.
.

13bの狭幅部内において、信号電極基板11および共
通電極基板12の内面に設けられた液晶配向膜である。
A liquid crystal alignment film is provided on the inner surfaces of the signal electrode substrate 11 and the common electrode substrate 12 within the narrow width portion 13b.

しかしてこのような液晶素子においては、発熱電極23
.23に通電をするとともに、駆動回路を通して信号電
極18・・・および共通電極22゜22に通電をし、信
号電極18・・・と共通電極22゜22との間に駆動電
圧を印加する。すると、その駆動電圧の印加部分におけ
る液晶の分子配列構造が変化し、この変化でシャッタ部
S・・・が開または閉となり、シャッタ部S・・・での
光の透過が制御される。
However, in such a liquid crystal element, the heating electrode 23
.. At the same time, the signal electrodes 18... and the common electrodes 22.degree. 22 are energized through the drive circuit, and a driving voltage is applied between the signal electrodes 18.. and the common electrodes 22.degree. Then, the molecular arrangement structure of the liquid crystal in the area where the drive voltage is applied changes, and this change opens or closes the shutter section S, thereby controlling the transmission of light through the shutter section S.

また、発熱電極23.23への通電により、これら発熱
電極23.23が発熱し、この発熱により液晶15が加
熱され、降温装置(図示せず)による冷却とのバランス
で例えば4o±2〜5℃の適温に保たれ、これにより液
晶15の分子配列変化が速やかで、良好な応答性を確保
できる。そして、従来のように液晶素子の外面に別個に
構成した;H度調整用ヒータを貼り付ける手段とは異な
り、発熱電極23.23は共通電極基板12の内面で液
晶15の配置部分の近くに臨んでいるがら、液晶15を
効率的にかつ精度よく均一に加熱してその温度を的確に
調整でき、また液晶素子としての全体の厚さを薄くする
ことができる。しがも、発熱電極23.23は共通電極
基板12の内面に共通電極22.22を設ける工程と同
時にパターン形成することが可能であり、したがって製
造上の能率の点でもコストの点でも格段に有利となる。
In addition, when electricity is applied to the heating electrodes 23.23, these heating electrodes 23.23 generate heat, and this heat generation heats the liquid crystal 15. In balance with cooling by a temperature lowering device (not shown), for example, 4o ± 2 to 5 The temperature is maintained at an appropriate temperature of .degree. C., so that the molecular arrangement of the liquid crystal 15 changes quickly and good responsiveness can be ensured. In addition, unlike the conventional method in which a heater for adjusting H degree is attached separately on the outer surface of the liquid crystal element, the heating electrodes 23.23 are arranged on the inner surface of the common electrode substrate 12 near the area where the liquid crystal 15 is arranged. The liquid crystal 15 can be heated efficiently and accurately and uniformly, and its temperature can be adjusted accurately, and the overall thickness of the liquid crystal element can be reduced. However, the heating electrodes 23.23 can be patterned at the same time as the process of forming the common electrodes 22.22 on the inner surface of the common electrode substrate 12, which greatly reduces production efficiency and cost. It will be advantageous.

発熱電極23.23の構成材料としては、製造の能率性
やコストの面では上記実施例のように、電極と同様の構
成とすることが最も好ましいが、他の抵抗体を用いるこ
とも可能である。この場合、電気抵抗を有する金属膜材
料、例えば金属酸化膜、カーボンなどを例に挙げること
ができる。また、発熱電極を酸化インジュウムなどの透
明導電材料や金属膜等とする場合におけるその形成方法
としては、蒸着、スパッタ、印刷、電解メッキ、無電解
メッキなどの手段あかある。
As for the constituent material of the heating electrodes 23 and 23, it is most preferable to have the same structure as the electrodes as in the above embodiment in terms of production efficiency and cost, but it is also possible to use other resistors. be. In this case, examples include metal film materials having electrical resistance, such as metal oxide films and carbon. Further, when the heating electrode is made of a transparent conductive material such as indium oxide, a metal film, etc., methods of forming the electrode include vapor deposition, sputtering, printing, electrolytic plating, and electroless plating.

第4図はこの発明の他の実施例を示し、共通電極22.
22および発熱電極23の端子を共通電極基板12の片
側に寄せて配置するようにしたものである。
FIG. 4 shows another embodiment of the invention, in which the common electrode 22.
22 and the terminals of the heating electrode 23 are arranged close to one side of the common electrode substrate 12.

なお、この発明による液晶素子は光書込み式プリンタの
光書込みヘッドに組込んで使用する場合に限らず、他の
種々の機器に組込んで他の用途に使用することも可能で
あることは言うまでもない。
It goes without saying that the liquid crystal element according to the present invention can be used not only by being incorporated into the optical writing head of an optical writing printer, but also by being incorporated into various other devices and used for other purposes. stomach.

〔発明の効果〕〔Effect of the invention〕

以上説明したようにこの発明によれば、液晶を効率よく
均一に加熱して的確な温度調整を図ることができるとと
もに、厚さの増大を抑えて薄型に構成でき、かつ能率的
で安価な製造を達成することができるという効果を奏す
る。
As explained above, according to the present invention, it is possible to efficiently and uniformly heat the liquid crystal to achieve accurate temperature adjustment, and it is also possible to suppress the increase in thickness, make it thinner, and achieve efficient and inexpensive manufacturing. This has the effect of being able to achieve the following.

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

第1図はこの発明の一実施例を示す横断面図、第2図は
同じく平断面図、第3図は共通電極基板を反転して示す
平面図、第4図はこの発明の他の実施例における共通基
板を反転して示す平面図、第5図は従来技術を示す斜視
図、第6図は同じく断面図である。 11.12・・・基板、15・・・液晶、18・・・信
号電極、22・・・共通電極、23・・・発熱電極、S
・・・シャッタ部。
FIG. 1 is a cross-sectional view showing one embodiment of the invention, FIG. 2 is a plan sectional view, FIG. 3 is a plan view showing an inverted common electrode substrate, and FIG. 4 is another embodiment of the invention. FIG. 5 is a plan view showing the common substrate in the example inverted, FIG. 5 is a perspective view showing the prior art, and FIG. 6 is a sectional view. 11.12...Substrate, 15...Liquid crystal, 18...Signal electrode, 22...Common electrode, 23...Heating electrode, S
...Shutter section.

Claims (2)

【特許請求の範囲】[Claims] (1)透明な一対の基板を液晶を挟んで互いに対向配置
し、その一方の基板の内面に第1の電極を、他方の基板
の内面に第2の電極をそれぞれ形成し、これら第1およ
び第2の電極の対向間で光の透過を制御するシャッタ部
を構成してなるものにおいて、上記他方の基板の内面に
発熱電極を形成したことを特徴とする液晶装置。
(1) A pair of transparent substrates are placed facing each other with a liquid crystal in between, a first electrode is formed on the inner surface of one of the substrates, a second electrode is formed on the inner surface of the other substrate, and these first and second electrodes are formed on the inner surface of the other substrate. 1. A liquid crystal device comprising a shutter section for controlling transmission of light between opposing second electrodes, characterized in that a heat generating electrode is formed on the inner surface of the other substrate.
(2)発熱電極は共通電極と同一の材料で形成されてい
ることを特徴とした特許請求の範囲第1項記載の液晶装
置。
(2) The liquid crystal device according to claim 1, wherein the heating electrode is made of the same material as the common electrode.
JP60294015A 1985-12-27 1985-12-27 Liquid crystal element Pending JPS62153835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60294015A JPS62153835A (en) 1985-12-27 1985-12-27 Liquid crystal element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60294015A JPS62153835A (en) 1985-12-27 1985-12-27 Liquid crystal element

Publications (1)

Publication Number Publication Date
JPS62153835A true JPS62153835A (en) 1987-07-08

Family

ID=17802146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60294015A Pending JPS62153835A (en) 1985-12-27 1985-12-27 Liquid crystal element

Country Status (1)

Country Link
JP (1) JPS62153835A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832460A (en) * 1984-07-27 1989-05-23 Casio Computer Co., Ltd. Liquid crystal apparatus having pressure absorbing means
US5559614A (en) * 1995-05-01 1996-09-24 Motorola, Inc. Liquid crystal display with integral heater and method of fabricating same
US6133979A (en) * 1996-09-23 2000-10-17 Lg Electronics Inc. Liquid crystal display device with internal heating element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832460A (en) * 1984-07-27 1989-05-23 Casio Computer Co., Ltd. Liquid crystal apparatus having pressure absorbing means
US5559614A (en) * 1995-05-01 1996-09-24 Motorola, Inc. Liquid crystal display with integral heater and method of fabricating same
US6133979A (en) * 1996-09-23 2000-10-17 Lg Electronics Inc. Liquid crystal display device with internal heating element

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