JPH04269710A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPH04269710A JPH04269710A JP5345091A JP5345091A JPH04269710A JP H04269710 A JPH04269710 A JP H04269710A JP 5345091 A JP5345091 A JP 5345091A JP 5345091 A JP5345091 A JP 5345091A JP H04269710 A JPH04269710 A JP H04269710A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display element
- crystal display
- temperature
- transparent electrode
- 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.)
- Withdrawn
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 74
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 17
- 239000010408 film Substances 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、液晶表示素子に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display element.
【０００２】0002
【従来の技術】従来、時計、テレビ、パソコンディスプ
レイなどに使用されている液晶表示素子は、基本的に、
片面に少なくとも透明電極及び配向膜が設けられたガラ
ス基板の二枚が、配向膜同士が対面するように配設され
、配向膜の間の空隙に液晶が封入された構造を有してい
る。そして、この液晶として種々の液晶が使用されてい
るが、最近では高速応答性を有する強誘電性液晶が主と
して使用されている。[Prior Art] Liquid crystal display elements conventionally used in watches, televisions, computer displays, etc. basically have the following characteristics:
It has a structure in which two glass substrates each having at least a transparent electrode and an alignment film provided on one side are arranged so that the alignment films face each other, and liquid crystal is sealed in the gap between the alignment films. Various types of liquid crystals have been used as this liquid crystal, but recently ferroelectric liquid crystals having high-speed response have been mainly used.
【０００３】液晶表示素子に対する要求が多様化し高度
化するに伴なって、種々の液晶組成物が開発されている
。このような液晶組成物の中には、駆動適性温度範囲が
環境温度よりも高いものがあり、液晶をその性能が十分
に発揮されるように使用するためには、液晶表示素子中
の液晶を、その駆動最適温度範囲に常に維持することが
望ましい。例えば、液晶表示素子中の液晶の温度が、駆
動適性温度範囲よりも高いと表示にクロストークが発生
したり、駆動適性温度範囲よりも低いと応答性が遅くな
ったりする。As the requirements for liquid crystal display elements become more diverse and sophisticated, various liquid crystal compositions have been developed. Some of these liquid crystal compositions have a suitable driving temperature range that is higher than the environmental temperature, and in order to use the liquid crystal to its full potential, it is necessary to adjust the liquid crystal in the liquid crystal display element. , it is desirable to maintain it at all times within its operating optimum temperature range. For example, if the temperature of the liquid crystal in the liquid crystal display element is higher than the suitable driving temperature range, crosstalk will occur in the display, and if it is lower than the suitable driving temperature range, the response will be slow.
【０００４】これまでは、液晶表示素子を液晶の駆動最
適温度範囲に維持することについて特に考慮されなかっ
たり、液晶表示素子を所望の温度範囲に維持する場合で
も、液晶表示素子の外面に温度検出器を装着して液晶表
示素子の温度を検出し制御していた。しかしながら、液
晶表示素子の性能を最大限に発揮させるためには、液晶
表示素子中の液晶の温度を、その駆動適性温度範囲内に
できるだけ厳密に維持されるように制御することが望ま
しく、そのためには先ず液晶表示素子中の液晶の温度を
できるだけ迅速に且つ正確に検出することが必要である
。Until now, no particular consideration has been given to maintaining the liquid crystal display element within the optimum temperature range for driving the liquid crystal, or even when maintaining the liquid crystal display element within the desired temperature range, temperature detection has been carried out on the outer surface of the liquid crystal display element. A device was attached to detect and control the temperature of the liquid crystal display element. However, in order to maximize the performance of a liquid crystal display element, it is desirable to control the temperature of the liquid crystal in the liquid crystal display element so as to maintain it as strictly as possible within its suitable driving temperature range. First, it is necessary to detect the temperature of the liquid crystal in the liquid crystal display element as quickly and accurately as possible.
【０００５】従来のように、温度検出器を液晶表示素子
の外面に取り付けた場合には、環境温度の影響を受けた
り、ガラス基板を介して測定するので液晶温度の検出遅
れがあったりなどして、液晶の温度を正確に検出するこ
とができず、液晶表示素子中の液晶の温度が最適温度範
囲内に保持されていることの保証はなかった。[0005] Conventionally, when a temperature sensor is attached to the outer surface of a liquid crystal display element, it is affected by the environmental temperature, and there is a delay in detecting the liquid crystal temperature because it is measured through a glass substrate. Therefore, it was not possible to accurately detect the temperature of the liquid crystal, and there was no guarantee that the temperature of the liquid crystal in the liquid crystal display element was maintained within the optimum temperature range.
【０００６】[0006]
【発明が解決しようとする課題】液晶表示素子の駆動中
に、液晶表示素子中に封入されている液晶の温度をでき
るだけ正確に迅速に検出できる液晶表示素子を提供する
。SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display element that can detect the temperature of liquid crystal sealed in the liquid crystal display element as accurately and quickly as possible while the liquid crystal display element is being driven.
【０００７】[0007]
【課題を解決するための手段】本発明は、片面に少なく
とも透明電極及び配向膜が設けられたガラス基板の二枚
を、配向膜同士が対面するように配設し、配向膜の間の
空隙に液晶を封入してなる液晶表示素子であって、該ガ
ラス基板の少なくとも一方の、透明電極とガラス基板と
の間に温度検出器が設けられてなることを特徴とする液
晶表示素子である。[Means for Solving the Problems] The present invention provides two glass substrates each having at least a transparent electrode and an alignment film on one side, arranged so that the alignment films face each other, and a gap between the alignment films. This is a liquid crystal display element in which a liquid crystal is sealed in a liquid crystal display element, characterized in that a temperature sensor is provided between a transparent electrode of at least one of the glass substrates and the glass substrate.
【０００８】本発明の好適な態様は下記の通りである。
（１）上記温度検出器が、ＩＴＯ（インジウム−スズ酸
化物）膜、Ｐｔ、Ｃｕ、Ａｇ等の金属の細線、Ａｕ、Ｐ
ｄ、Ａｌ、Ａｇ等の金属の薄膜、又は酸化インジウム、
酸化スズ、酸化チタン等の金属酸化物の膜であることを
特徴とする上記の液晶表示素子。Preferred embodiments of the present invention are as follows. (1) The temperature sensor may be an ITO (indium-tin oxide) film, a thin metal wire such as Pt, Cu, Ag, Au, P
d, a thin film of metal such as Al, Ag, or indium oxide,
The above-mentioned liquid crystal display element is characterized in that it is a film of a metal oxide such as tin oxide or titanium oxide.
【０００９】（２）上記液晶表示素子が液晶マトリクス
型表示素子であって、上記基板の一方に、上記温度検出
器並びにブラックマスク及び／又はカラーフィルタが設
けられていることを特徴とする上記の液晶表示素子。(2) The above liquid crystal display element is a liquid crystal matrix type display element, and the temperature detector and the black mask and/or color filter are provided on one of the substrates. Liquid crystal display element.
【００１０】本発明を添付する図面を参照して詳細に説
明する。図１は、本発明の液晶表示素子の一実施例の一
部を拡大して模式的に示した断面図である。図１におい
て、液晶表示素子１は、ガラス基板２の上に平滑層３、
透明電極４、絶縁膜５及び配向膜６がこの順で設けられ
、一方ガラス基板７の上に温度検出器８、カラーフィル
タ９、平滑層１０、透明電極１１、絶縁膜１２及び配向
膜１３がこの順で設けられ、配向膜６と配向膜１３との
間の空隙に液晶１４が充填されて構成されている。The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an enlarged and schematic cross-sectional view of a part of an embodiment of a liquid crystal display element of the present invention. In FIG. 1, a liquid crystal display element 1 includes a smooth layer 3 on a glass substrate 2,
A transparent electrode 4, an insulating film 5, and an alignment film 6 are provided in this order, while a temperature detector 8, a color filter 9, a smoothing layer 10, a transparent electrode 11, an insulating film 12, and an alignment film 13 are provided on a glass substrate 7. They are provided in this order, and the gap between the alignment film 6 and the alignment film 13 is filled with liquid crystal 14 .
【００１１】温度検出器８はＩＴＯ膜である。ＩＴＯ膜
が、温度によりその電気抵抗値が変化することを利用し
、ＩＴＯ膜に電流を通し、その電流値を測定することに
よって温度を検出する。例えば、ＩＴＯ膜に微小電流を
通し、それを増幅し検定線と対比させて温度値に変換し
、ディジタル表示させることができる。また、ＩＴＯ膜
を通る電流値を、検定線から求めた所定の温度に対応す
る電流値と比較し、その差を補償するように、液晶表示
素子の外部に設けられた加熱器のＯＮ−ＯＦＦ操作を行
なう。即ち、温度検出器８から得られた温度が所定の温
度よりも低い場合は上記加熱器により加熱し、温度検出
器８から得られた温度が所定の温度よりも高くなると加
熱器の加熱を停止し、放冷する。このようにして、液晶
表示素子の温度を所定の温度範囲内に保持することがで
きる。これらの操作はコンピュータを利用して自動的に
行なうことができる。温度の制御手段として、比例制御
、ＰＩＤ制御、ファジー制御等の手段を使用することが
できる。[0011] The temperature sensor 8 is an ITO film. Taking advantage of the fact that the electrical resistance of an ITO film changes with temperature, temperature is detected by passing a current through the ITO film and measuring the current value. For example, it is possible to pass a minute current through an ITO film, amplify it, compare it with a calibration line, convert it into a temperature value, and display it digitally. In addition, the current value passing through the ITO film is compared with the current value corresponding to a predetermined temperature determined from the verification line, and in order to compensate for the difference, the heater provided outside the liquid crystal display element is turned on and off. Perform the operation. That is, when the temperature obtained from the temperature detector 8 is lower than a predetermined temperature, the heating is performed by the heater, and when the temperature obtained from the temperature detector 8 becomes higher than the predetermined temperature, the heating by the heater is stopped. and leave to cool. In this way, the temperature of the liquid crystal display element can be maintained within a predetermined temperature range. These operations can be performed automatically using a computer. As a temperature control means, means such as proportional control, PID control, and fuzzy control can be used.
【００１２】また、上記加熱器を設ける変わりに、温度
検出器８から得られた温度値を所定の範囲の温度と比較
し、両者の温度差によって、液晶表示素子を駆動する液
晶ドライバの出力を制御することによって、液晶の温度
を所定の範囲内に維持することもできる。Furthermore, instead of providing the heater, the temperature value obtained from the temperature detector 8 is compared with a temperature in a predetermined range, and the output of the liquid crystal driver for driving the liquid crystal display element is determined based on the temperature difference between the two. Through control, the temperature of the liquid crystal can also be maintained within a predetermined range.
【００１３】温度検出器８は、基板７と透明電極１１と
の間であれば、どこに設けられていてもよい。温度検出
器８を設ける他の態様を図２に示す。The temperature detector 8 may be provided anywhere between the substrate 7 and the transparent electrode 11. Another embodiment of providing the temperature sensor 8 is shown in FIG.
【００１４】図２は、本発明の液晶表示素子の他の実施
例の一方の基板部分のみの一部を拡大して模式的に示し
た断面図である。図２（Ａ）において、液晶表示素子１
は、ガラス基板７の上にブラックマスク１５、温度検出
器８、カラーフィルタ９、平滑層１０、透明電極１１、
絶縁膜１２及び配向膜１３がこの順で設けられている。
図２（Ｂ）において、液晶表示素子１は、ガラス基板７
の上にブラックマスク１５、温度検出器８、平滑層１０
、透明電極１１、絶縁膜１２及び配向膜１３がこの順で
設けられている。図２（Ｃ）において、液晶表示素子１
は、ガラス基板７の上にカラーフィルタ９、温度検出器
８、平滑層１０、透明電極１１、絶縁膜１２及び配向膜
１３がこの順で設けられている。FIG. 2 is a partially enlarged sectional view schematically showing only one substrate portion of another embodiment of the liquid crystal display element of the present invention. In FIG. 2(A), liquid crystal display element 1
A black mask 15, a temperature detector 8, a color filter 9, a smooth layer 10, a transparent electrode 11,
An insulating film 12 and an alignment film 13 are provided in this order. In FIG. 2(B), the liquid crystal display element 1 includes a glass substrate 7
On top of that, a black mask 15, a temperature detector 8, a smooth layer 10
, a transparent electrode 11, an insulating film 12, and an alignment film 13 are provided in this order. In FIG. 2(C), liquid crystal display element 1
A color filter 9, a temperature detector 8, a smoothing layer 10, a transparent electrode 11, an insulating film 12, and an alignment film 13 are provided on a glass substrate 7 in this order.
【００１５】上記の態様の他に、温度検出器８を基板７
と透明電極１１との間である限りどこに設けてもよく、
必要に応じて図示しない任意の他の層を更に設けたり、
削除してもよい。一般的に、温度検出器８と透明電極１
１とは接触させることなく、その間に他の絶縁性の層を
介在させることが好ましい。温度検出器８を基板７上に
設けず、基板２上の透明電極４と基板２との間に設けて
もよい。In addition to the above-mentioned embodiment, the temperature sensor 8 can be mounted on the substrate 7.
It may be provided anywhere as long as it is between the transparent electrode 11 and
Any other layer not shown may be further provided as necessary, or
You may delete it. Generally, a temperature detector 8 and a transparent electrode 1
It is preferable that there be no contact with 1 and another insulating layer interposed therebetween. The temperature detector 8 may not be provided on the substrate 7 but may be provided between the transparent electrode 4 on the substrate 2 and the substrate 2.
【００１６】温度検出器８は、必ずしも液晶表示素子１
の全面に設ける必要はなく、一箇所以上の場所に部分的
に設けてもよい。[0016] The temperature detector 8 is not necessarily connected to the liquid crystal display element 1.
It is not necessary to provide it over the entire surface of the area, but it may be provided partially at one or more locations.
【００１７】ＩＴＯ膜からなる温度検出器８は、一般に
５０ｎｍ〜５０μｍ、好ましくは１００ｎｍ〜１０μｍ
の膜厚を有するものであり、それ自体公知の方法、例え
ば、塗布法、真空蒸着法、高周波スパッタ法、マグネト
ロンスパッタ法などの方法によって形成することができ
る。The temperature sensor 8 made of an ITO film generally has a thickness of 50 nm to 50 μm, preferably 100 nm to 10 μm.
It can be formed by a method known per se, for example, a coating method, a vacuum evaporation method, a high frequency sputtering method, a magnetron sputtering method, or the like.
【００１８】温度検出器８は、ＩＴＯ膜に限定されるも
のではなく、Ｐｔ、Ｃｕ、Ａｇ等の金属の細線、Ａｕ、
Ｐｄ、Ａｌ、Ａｇ等の金属の薄膜、酸化インジウム、酸
化スズ、酸化チタン等の金属酸化物の膜等、微細な形状
に構成することができ、温度を検出することができる（
特に、便利には温度を電気的な量として検出することが
できる）ものであれば、どのようなものであってもよい
。The temperature sensor 8 is not limited to an ITO film, but may also be made of thin metal wires such as Pt, Cu, Ag, etc.
They can be formed into fine shapes, such as thin films of metals such as Pd, Al, and Ag, and films of metal oxides such as indium oxide, tin oxide, and titanium oxide, and can detect temperature (
In particular, it can be anything (conveniently, the temperature can be detected as an electrical quantity).
【００１９】本発明の液晶表示素子は、透明電極４及び
透明電極１１がそれぞれ複数個からなり、透明電極４と
透明電極１１とが直交して表示画素を形成している液晶
マトリクス型表示素子であってもよい。また、本発明の
液晶表示素子は、黒白又はカラーの何れであってもよく
、フィルタとしてＲＧＢカラーフィルタを隣接する表示
ドットに設けることによって、液晶カラーテレビジョン
パネルのようなフルカラーのマトリクス型表示素子にす
ることができる。The liquid crystal display element of the present invention is a liquid crystal matrix type display element in which a plurality of transparent electrodes 4 and a plurality of transparent electrodes 11 are formed, and the transparent electrodes 4 and transparent electrodes 11 are orthogonal to each other to form a display pixel. There may be. The liquid crystal display element of the present invention may be either black and white or color, and by providing RGB color filters as filters in adjacent display dots, it can be used as a full-color matrix type display element such as a liquid crystal color television panel. It can be done.
【００２０】本発明の表示素子において、液晶はどのよ
うなものであってもよいが特に強誘電性液晶であること
が好ましく、電極、配向膜その他の構成部品、表示素子
のその他の構造、表示素子の駆動方式などについては、
それ自体公知のものを使用することができる。In the display element of the present invention, the liquid crystal may be of any type, but ferroelectric liquid crystal is particularly preferable, and the liquid crystal is preferably a ferroelectric liquid crystal. Regarding the element drive method etc.
Those known per se can be used.
【００２１】[0021]
【発明の効果】本発明のマトリクス型表示素子は、液晶
層の近くに温度検出器が設けられているので、液晶の温
度を正確に、しかも液晶の温度変化に迅速に追従して検
出することができるという顕著に優れた効果を奏する表
示素子である。[Effects of the Invention] Since the matrix type display element of the present invention has a temperature detector near the liquid crystal layer, it is possible to detect the temperature of the liquid crystal accurately and quickly follow the temperature change of the liquid crystal. This is a display element that exhibits a remarkable effect of being able to perform the following functions.
【図１】本発明の液晶表示素子の一実施例の一部を拡大
して模式的に示した断面図である。FIG. 1 is a schematic, enlarged cross-sectional view of a part of an embodiment of a liquid crystal display element of the present invention.
【図２】本発明の液晶表示素子の他の実施例の一方の基
板部分のみの一部を拡大して模式的に示した断面図であ
る。FIG. 2 is a partially enlarged sectional view schematically showing only one substrate portion of another embodiment of the liquid crystal display element of the present invention.
１ 液晶表示素子 ２ ガラス基板 ３ 平滑層 ４ 透明電極 ５ 絶縁層 ６ 配向膜 ７ ガラス基板 ８ 温度検出器 ９ カラーフィルタ １０ 平滑層 １１ 透明電極、 １２ 絶縁層 １３ 配向膜 １４ 液晶、 １５ ブラックマスク 1 Liquid crystal display element 2 Glass substrate 3 Smooth layer 4 Transparent electrode 5 Insulating layer 6 Alignment film 7 Glass substrate 8 Temperature detector 9 Color filter 10 Smooth layer 11 Transparent electrode, 12 Insulating layer 13 Alignment film 14 Liquid crystal, 15 Black Mask
Claims (1)
が設けられたガラス基板の二枚を、配向膜同士が対面す
るように配設し、配向膜の間の空隙に液晶を封入してな
る液晶表示素子であって、該ガラス基板の少なくとも一
方の、透明電極とガラス基板との間に温度検出器が設け
られてなることを特徴とする液晶表示素子。Claim 1: A liquid crystal produced by disposing two glass substrates each having at least a transparent electrode and an alignment film on one side so that the alignment films face each other, and filling the gap between the alignment films with liquid crystal. 1. A liquid crystal display element, characterized in that a temperature detector is provided between at least one of the glass substrates, a transparent electrode and the glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345091A JPH04269710A (en) | 1991-02-25 | 1991-02-25 | Liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345091A JPH04269710A (en) | 1991-02-25 | 1991-02-25 | Liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04269710A true JPH04269710A (en) | 1992-09-25 |
Family
ID=12943193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5345091A Withdrawn JPH04269710A (en) | 1991-02-25 | 1991-02-25 | Liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04269710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003262893A (en) * | 2002-03-11 | 2003-09-19 | Ricoh Co Ltd | Optical path deflecting device and picture display device |
-
1991
- 1991-02-25 JP JP5345091A patent/JPH04269710A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003262893A (en) * | 2002-03-11 | 2003-09-19 | Ricoh Co Ltd | Optical path deflecting device and picture display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |