JPH04282613A - Liquid crystal display device and electronic equipment formed by using liquid crystal display device - Google Patents
Liquid crystal display device and electronic equipment formed by using liquid crystal display deviceInfo
- Publication number
- JPH04282613A JPH04282613A JP3046660A JP4666091A JPH04282613A JP H04282613 A JPH04282613 A JP H04282613A JP 3046660 A JP3046660 A JP 3046660A JP 4666091 A JP4666091 A JP 4666091A JP H04282613 A JPH04282613 A JP H04282613A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- crystal display
- layer
- polarizing
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 81
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000002788 crimping Methods 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000010287 polarization Effects 0.000 description 11
- 210000002858 crystal cell Anatomy 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は液晶表示装置の構造及び
それを有する電子機器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a liquid crystal display device and electronic equipment having the same.
【０００２】0002
【従来の技術】従来の液晶表示装置は電極を有する一対
の基板間に液晶層を挟持した液晶セルと、これを挟んで
両側に配置した２つの偏光層からなり、液晶表示装置を
透過型で用いる場合には、液晶セルの目視側と反対側の
偏光層の外側に平面状の発光体を設置した構造をしてい
た。また、液晶表示装置を反射型で用いる場合には、液
晶セルの目視側と反対側の偏光層の外側に反射層を配置
した構造をしていた。しかし、この液晶表示装置では液
晶表示装置に入射した光が再び液晶表示装置を出るまで
に偏光層を４回も通過するため表示が暗くなってしまう
という問題を有していた。この様な問題を解決する手段
として近年、図５に示すような液晶層５２を挟むように
偏光層５１と反射層５３を配置した新しい反射型液晶モ
ードが提案されている。このモードの液晶表示装置は従
来の液晶表示装置と異なり偏光層が１層しかないため、
液晶表示装置に入射した光が再び液晶表示装置を出るま
でに偏光層を通過する回数は２回となり明るい表示が得
られるというもので、従来の液晶表示装置に比べ倍近い
明るさの表示が可能となった。[Prior Art] A conventional liquid crystal display device consists of a liquid crystal cell in which a liquid crystal layer is sandwiched between a pair of substrates having electrodes, and two polarizing layers arranged on both sides of the cell. When used, it had a structure in which a planar light emitter was placed outside the polarizing layer on the side opposite to the viewing side of the liquid crystal cell. Further, when a reflective type liquid crystal display device is used, a reflective layer is disposed outside the polarizing layer on the side opposite to the viewing side of the liquid crystal cell. However, this liquid crystal display device has a problem in that the light incident on the liquid crystal display device passes through the polarizing layer four times before exiting the liquid crystal display device again, resulting in a dark display. As a means to solve such problems, a new reflective liquid crystal mode has been proposed in recent years, as shown in FIG. 5, in which a polarizing layer 51 and a reflective layer 53 are arranged to sandwich a liquid crystal layer 52. Unlike conventional liquid crystal display devices, this mode of liquid crystal display device has only one polarizing layer.
The light entering the LCD device passes through the polarizing layer twice before exiting the LCD device again, resulting in a brighter display, making it possible to display nearly twice as brightly as conventional LCD devices. It became.
【０００３】0003
【発明が解決しようとする課題】しかし、前述の透過型
の液晶表示装置を電子機器、特に携帯用パソコンなどに
組み込んで使用した場合、電子機器に外部より電源を供
給できるときは問題無いが、外部電源を使用せず、電子
機器内蔵のバッテリーを使用するときは、内蔵バッテリ
ーの容量が小さいため、電子機器の使用可能時間が短く
なってしまうという欠点を有していた。[Problems to be Solved by the Invention] However, when the above-mentioned transmissive liquid crystal display device is incorporated into an electronic device, particularly a portable personal computer, etc., there is no problem when power can be supplied to the electronic device from the outside. When using a battery built into an electronic device without using an external power source, the built-in battery has a small capacity, resulting in a disadvantage that the usable time of the electronic device is shortened.
【０００４】また、前述の偏光層が１層しかない新しい
反射型の液晶表示装置を電子機器に組み込んで使用した
場合、暗い環境下で用いたときには、液晶表示装置に入
射する光の絶対量が低下するため、表示が暗く、内容が
認識しにくいという欠点を有していた。[0004] Furthermore, when the above-mentioned new reflective liquid crystal display device having only one polarizing layer is incorporated into an electronic device and used in a dark environment, the absolute amount of light incident on the liquid crystal display device is This has the disadvantage that the display is dark and the content is difficult to recognize.
【０００５】そこで、本発明は上記欠点を解決するため
に、液晶表示装置を、液晶セル背面の発光体を点灯状態
としたときは透過型として、非点灯状態としたときは偏
光層が１層しかない新しい反射型として用いるものであ
り、その目的とするところは、明るい環境下では反射型
として用いることにより電子機器の使用可能時間を延ば
し、暗い環境下では透過型として用いることにより明る
い表示が得られる液晶表示装置及びそれを用いた電子機
器を提供するところにある。Therefore, in order to solve the above-mentioned drawbacks, the present invention provides a liquid crystal display device that is a transmissive type when the light emitter on the back side of the liquid crystal cell is in a lit state, and a single polarizing layer when it is in a non-lit state. It is used as a new reflective type that is available only in bright environments, and its purpose is to extend the usable time of electronic devices by using it as a reflective type in bright environments, and to increase the brightness of display by using it as a transmissive type in dark environments. An object of the present invention is to provide a liquid crystal display device obtained and an electronic device using the same.
【０００６】[0006]
【課題を解決するための手段】本発明の液晶表示装置は
、電極を有する一対の基板間に液晶層を挟持し、かつ液
晶層を挟むように一対の偏光層を配置する液晶表示装置
において、目視側とは反対側の偏光層と液晶層との間に
入射光の一部を透過する性質を有する光反射層を設けた
ことを特徴とする。さらに本発明の電子機器は、この液
晶表示装置を電子機器に用いることを特徴とする。[Means for Solving the Problems] The liquid crystal display device of the present invention has a liquid crystal layer sandwiched between a pair of substrates having electrodes, and a pair of polarizing layers arranged so as to sandwich the liquid crystal layer. A light reflecting layer having a property of transmitting a part of incident light is provided between the polarizing layer and the liquid crystal layer on the side opposite to the viewing side. Further, an electronic device of the present invention is characterized in that this liquid crystal display device is used in the electronic device.
【０００７】[0007]
【実施例】以下本発明の一実施例を説明する。[Embodiment] An embodiment of the present invention will be described below.
【０００８】〔実施例１〕図１に本発明の一実施例であ
る液晶表示装置の断面図を示す。３は液晶セルであり、
セルギャップは８μｍ、液晶のΔｎは０．１で上側基板
（目視側）から下側基板に向かって左に２６０゜ツイス
トしている。１は上側の偏光板でありその偏光軸と上側
基板のラビング軸の角度は３２゜である。２は一軸延伸
フィルムであり、リターデーションの値は０．３２μｍ
で延伸方向と上側ラビング軸の角度は２４゜である。４
は半透過反射板でありその透過率は４０％である。また
、５は下側の偏光板でありその偏光軸と上側基板のラビ
ング軸の角度は１０７゜である。[Embodiment 1] FIG. 1 shows a sectional view of a liquid crystal display device which is an embodiment of the present invention. 3 is a liquid crystal cell;
The cell gap is 8 μm, the liquid crystal Δn is 0.1, and it is twisted 260° to the left from the upper substrate (viewing side) toward the lower substrate. 1 is an upper polarizing plate, and the angle between its polarization axis and the rubbing axis of the upper substrate is 32°. 2 is a uniaxially stretched film, and the retardation value is 0.32 μm
The angle between the stretching direction and the upper rubbing axis was 24°. 4
is a semi-transmissive reflector and its transmittance is 40%. Further, 5 is a lower polarizing plate, and the angle between its polarizing axis and the rubbing axis of the upper substrate is 107°.
【０００９】本実施例の液晶表示装置を明るい環境下で
使用するときは、パネル背面の発光体を非点灯状態にし
て使用する、その場合、液晶表示装置は反射型の液晶表
示装置となる。すなわち、上側偏光板より入射した光は
一軸延伸フィルム、液晶パネルを通過した後、反射板で
反射し、再び液晶パネル、一軸延伸フィルム、上側偏光
板を通って液晶表示装置より出てくる。このとき得られ
た表示のコントラスト比は約１：１０であり、明るさも
従来の偏光層を２層有する反射型液晶表示装置の約１．
５倍と明るい表示が得られた。また、この場合は、パネ
ル背面の発光体を非点灯状態とするために使用する電力
を節約することができ、液晶表示装置を電子機器、特に
携帯用パソコンに組み込んで電子機器内蔵のバッテリー
により駆動したとき、その使用可能時間を延ばすことが
できたことは言うまでもなく明らかである。When the liquid crystal display device of this embodiment is used in a bright environment, the light emitter on the back of the panel is turned off. In this case, the liquid crystal display device becomes a reflective liquid crystal display device. That is, the light incident from the upper polarizing plate passes through the uniaxially stretched film and the liquid crystal panel, is reflected by the reflective plate, passes through the liquid crystal panel, the uniaxially stretched film, and the upper polarizing plate again, and comes out of the liquid crystal display device. The contrast ratio of the display obtained at this time was approximately 1:10, and the brightness was approximately 1.1 times higher than that of a conventional reflective liquid crystal display device having two polarizing layers.
A display that was 5 times brighter was obtained. In addition, in this case, the power used to turn off the light emitter on the back of the panel can be saved, and the liquid crystal display can be built into electronic equipment, especially portable computers, and powered by the electronic equipment's built-in battery. Needless to say, when doing so, the usable time could be extended.
【００１０】一方、暗い環境下で使用する際は、発光体
を点灯状態にする。この場合は、液晶表示装置は透過型
として用いられる。すなわち、発光体を出た光は下側の
偏光板を通過した後、半透過反射板、液晶パネル、一軸
延伸フィルム、上側偏光板の順に通過して出てくる。こ
のとき得られた表示のコントラスト比は約１：５であり
、明るさは従来の透過型液晶表示装置の約７割と若干低
下するものの、まったく問題の無いレベルであった。On the other hand, when using the device in a dark environment, the light emitter is turned on. In this case, the liquid crystal display device is used as a transmissive type. That is, the light emitted from the light emitter passes through the lower polarizing plate, and then passes through the semi-transmissive reflective plate, the liquid crystal panel, the uniaxially stretched film, and the upper polarizing plate in this order, and then exits. The contrast ratio of the display obtained at this time was approximately 1:5, and although the brightness was slightly lower than that of a conventional transmission type liquid crystal display device, it was at a completely acceptable level.
【００１１】〔実施例２〕図３に本発明の一実施例であ
る液晶表示装置の断面図を示す。２３は液晶セルであり
、セルギャップは８μｍ、液晶のΔｎは０．１で上側基
板（目視側）から下側基板に向かって左に２６０゜ツイ
ストしている。２１は上側の偏光板でありその偏光軸と
上側基板のラビング軸の角度は３２゜である。２２は一
軸延伸フィルムであり、リターデーションの値は０．３
２μｍで延伸方向と上側ラビング軸の角度は２４゜であ
る。２４は半透過反射板でありその透過率は４０％であ
る。また、２６は下側の偏光板でありその偏光軸と上側
基板のラビング軸の角度は１０７゜である。２５は半透
過反射板と下側偏光板の間に設けられた一軸延伸フィル
ムでありそのリターデーションは０．１２μｍで延伸方
向と上側ラビング軸との角度は１５５゜である。[Embodiment 2] FIG. 3 shows a sectional view of a liquid crystal display device which is an embodiment of the present invention. A liquid crystal cell 23 has a cell gap of 8 μm, a liquid crystal Δn of 0.1, and is twisted 260° to the left from the upper substrate (viewing side) toward the lower substrate. 21 is an upper polarizing plate, and the angle between its polarizing axis and the rubbing axis of the upper substrate is 32°. 22 is a uniaxially stretched film, and the retardation value is 0.3
At 2 μm, the angle between the stretching direction and the upper rubbing axis is 24°. 24 is a semi-transmissive reflector whose transmittance is 40%. Further, 26 is a lower polarizing plate, and the angle between its polarizing axis and the rubbing axis of the upper substrate is 107°. 25 is a uniaxially stretched film provided between the transflective plate and the lower polarizing plate, the retardation of which is 0.12 μm, and the angle between the stretching direction and the upper rubbing axis is 155°.
【００１２】本実施例の液晶表示装置を実施例１同様に
、パネル背面の発光体を非点灯状態として使用したとき
、得られた表示のコントラスト比は約１：１０であり、
明るさも従来の偏光層を２層有する反射型液晶表示装置
の約１．５倍と明るい表示が得られた。電子機器に組み
込んで使用した場合も、実施例１同様に電子機器内蔵の
バッテリーの使用可能時間を延ばすことができたことは
言うまでもなく明らかである。When the liquid crystal display device of this example is used in the same way as in Example 1, with the light emitter on the back of the panel not lit, the contrast ratio of the display obtained is approximately 1:10.
The brightness of the display was approximately 1.5 times that of a conventional reflective liquid crystal display device having two polarizing layers. It goes without saying that when used in an electronic device, the usable time of the built-in battery of the electronic device could be extended as in Example 1.
【００１３】一方、発光体を点灯状態にして使用したと
き得られた表示のコントラスト比は約１：１０であり、
明るさは従来の透過型液晶表示装置の約７割と若干低下
するものの、実施例１同様まったく問題の無いレベルで
あった。On the other hand, the contrast ratio of the display obtained when the light emitting body is used in the lit state is about 1:10,
Although the brightness was slightly lower, about 70% of that of a conventional transmissive liquid crystal display device, it was at a completely acceptable level as in Example 1.
【００１４】〔実施例３〕上述の実施例１では、液晶パ
ネルと上側偏光板の間に一軸延伸フィルムを挿入し、実
施例２では、液晶パネルと上側偏光板の間と半透過反射
板と下側偏光板の間に一軸延伸フィルムを挿入している
が、一軸延伸フィルムを用いない場合も同等な効果は得
られ、上側偏光板、液晶パネル、半透過反射板、下側偏
光板の間のどの位置に一軸延伸フィルムを挿入しても同
等な効果が得られる。また、それぞれを組み合わせても
同等な効果が得られる。さらに、一ヶ所に挿入する一軸
延伸フィルムの枚数は一枚である必要はなく、複数枚で
も同等な効果が得られることは言うまでもない。[Example 3] In the above-mentioned Example 1, a uniaxially stretched film is inserted between the liquid crystal panel and the upper polarizing plate, and in Example 2, the uniaxially stretched film is inserted between the liquid crystal panel and the upper polarizing plate, and between the transflective plate and the lower polarizing plate. Although a uniaxially stretched film is inserted into the frame, the same effect can be obtained even if a uniaxially stretched film is not used. The same effect can be obtained by inserting it. Furthermore, the same effect can be obtained by combining each of them. Furthermore, it is needless to say that the number of uniaxially stretched films inserted at one location is not necessarily one, and the same effect can be obtained even with a plurality of films.
【００１５】〔実施例４〕半透過反射板としては、一軸
延伸フィルムにアルミなどの金属を蒸着したものを用い
ても、実施例１〜３と同等な効果が得られることは明ら
かであり、また、この場合は一軸延伸フィルムと半透過
反射層が一体となるため、薄型化、信頼性向上などの利
点も有る。[Example 4] It is clear that the same effects as in Examples 1 to 3 can be obtained even if a uniaxially stretched film with a metal such as aluminum vapor-deposited is used as the transflective plate. Furthermore, in this case, since the uniaxially stretched film and the semi-transparent reflective layer are integrated, there are also advantages such as thinning and improved reliability.
【００１６】[0016]
【発明の効果】以上述べたように本発明の液晶表示装置
は、電極を有する一対の基板間に液晶層を挟持し、かつ
液晶層を挟むように一対の偏光層を配置する液晶表示装
置において、目視側とは反対側の偏光層と液晶層との間
に入射光の一部を透過する性質を有する光反射層を設け
、液晶パネル背面の発光体を点灯、非点灯間で切り替え
ることにより、液晶表示装置を透過型、反射型の両方で
使用することが可能となり、この液晶表示装置を電子機
器に組み込んだ場合、明るい環境下では背面の発光体を
非点灯とし反射型で用いることにより、電子機器内蔵の
バッテリーの使用可能時間を延ばすことが可能となり、
また、暗い環境下では背面の発光体を点灯状態とするこ
とにより明るく、見やすい表示を得ることが可能となる
という効果を有する。As described above, the liquid crystal display device of the present invention is a liquid crystal display device in which a liquid crystal layer is sandwiched between a pair of substrates having electrodes, and a pair of polarizing layers are arranged so as to sandwich the liquid crystal layer. , by providing a light-reflecting layer with the property of transmitting part of the incident light between the polarizing layer and the liquid crystal layer on the side opposite to the viewing side, and switching the light emitter on the back of the liquid crystal panel between lighting and non-lighting. , it has become possible to use both transmissive and reflective liquid crystal display devices, and when this liquid crystal display device is incorporated into electronic equipment, the light emitter on the back is turned off in a bright environment and the reflective type can be used. , it becomes possible to extend the usable time of batteries built into electronic devices,
Furthermore, in a dark environment, by turning on the light emitter on the back side, it is possible to obtain a bright and easy-to-see display.
【図１】本発明の一実施例を示す断面図。FIG. 1 is a sectional view showing one embodiment of the present invention.
【図２】図１の液晶パネルにおける偏光板の偏光軸，ラ
ビング方向，位相差フィルムの延伸軸方向の関係を示す
図。2 is a diagram showing the relationship between the polarization axis of the polarizing plate, the rubbing direction, and the stretching axis direction of the retardation film in the liquid crystal panel of FIG. 1. FIG.
【図３】本発明の一実施例を示す断面図。FIG. 3 is a sectional view showing an embodiment of the present invention.
【図４】図３の液晶パネルにおける偏光板の偏光軸，ラ
ビング方向，位相差フィルムの延伸軸方向の関係を示す
図。4 is a diagram showing the relationship between the polarization axis of the polarizing plate, the rubbing direction, and the stretching axis direction of the retardation film in the liquid crystal panel of FIG. 3. FIG.
【図５】従来の液晶表示装置を示す図。FIG. 5 is a diagram showing a conventional liquid crystal display device.
１．偏光板
２．一軸延伸フィルム
３．液晶パネル
４．半透過反射板
５．偏光板
６．発光体
１１．上側基板のラビング方向
１２．一軸延伸フィルムの延伸方向
１３．上側偏光板の偏光軸の方向
１４．下側基板のラビング方向
１５．下側偏光板の偏光軸の方向
１６．上側基板のラビング軸と一軸延伸フィルムの延伸
方向のなす角。
１７．上側基板のラビング軸と上側偏光板の偏光軸のな
す角。
１８．上側基板のラビング軸と下側偏光板の偏光軸のな
す角。
１９．上側基板のラビング軸と下側基板のラビング軸の
なす角。
２１．偏光板
２２．一軸延伸フィルム
２３．液晶パネル
２４．一軸延伸フィルム
２５．半透過反射板
２６．偏光板
２７．発光体
３１．上側基板のラビング方向
３２．上側一軸延伸フィルムの延伸方向３３．上側偏光
板の偏光軸の方向
３４．下側基板のラビング方向
３５．下側偏光板の偏光軸の方向
３６．下側一軸延伸フィルムの延伸方向３７．上側基板
のラビング軸と上側一軸延伸フィルムの延伸方向のなす
角。
３８．上側基板のラビング軸と上側偏光板の偏光軸のな
す角。
３９．上側基板のラビング軸と下側偏光板の偏光軸のな
す角。
４０．上側基板のラビング軸と下側一軸延伸フィルムの
延伸方向のなす角。
４１．上側基板のラビング軸と下側基板のラビング軸の
なす角。
５１．偏光板
５２．液晶パネル
５３．反射板1. Polarizing plate 2. Uniaxially stretched film 3. LCD panel 4. Transflective plate 5. Polarizing plate 6. Luminous body 11. Rubbing direction of upper substrate 12. Stretching direction of uniaxially stretched film 13. Direction of the polarization axis of the upper polarizer 14. Rubbing direction of lower substrate 15. Direction of the polarization axis of the lower polarizer 16. The angle between the rubbing axis of the upper substrate and the stretching direction of the uniaxially stretched film. 17. The angle between the rubbing axis of the upper substrate and the polarization axis of the upper polarizing plate. 18. The angle between the rubbing axis of the upper substrate and the polarization axis of the lower polarizing plate. 19. The angle between the rubbing axis of the upper board and the rubbing axis of the lower board. 21. Polarizing plate 22. Uniaxially stretched film 23. Liquid crystal panel 24. Uniaxially stretched film 25. Transflective plate 26. Polarizing plate 27. Luminous body 31. Rubbing direction of upper substrate 32. Stretching direction of upper uniaxially stretched film 33. Direction of the polarization axis of the upper polarizer 34. Rubbing direction of lower substrate 35. Direction of the polarization axis of the lower polarizer 36. Stretching direction of lower uniaxially stretched film 37. The angle between the rubbing axis of the upper substrate and the stretching direction of the upper uniaxially stretched film. 38. The angle between the rubbing axis of the upper substrate and the polarization axis of the upper polarizing plate. 39. The angle between the rubbing axis of the upper substrate and the polarization axis of the lower polarizing plate. 40. The angle between the rubbing axis of the upper substrate and the stretching direction of the lower uniaxially stretched film. 41. The angle between the rubbing axis of the upper board and the rubbing axis of the lower board. 51. Polarizing plate 52. Liquid crystal panel 53. a reflector
Claims (3)
し、かつ前記液晶層を挟むように一対の偏光層を配置す
る液晶表示装置において、前記一対の偏光層のうちの一
方の偏光層と前記液晶層の間に入射光の一部を透過する
性質を有する光反射層を設けたことを特徴とする液晶表
示装置。1. A liquid crystal display device in which a liquid crystal layer is sandwiched between a pair of substrates having electrodes, and a pair of polarizing layers are arranged so as to sandwich the liquid crystal layer, wherein one of the pair of polarizing layers is polarized. A liquid crystal display device, characterized in that a light reflecting layer having a property of transmitting a part of incident light is provided between the layer and the liquid crystal layer.
有する光反射層と前記液晶層に対し光反射板側に設けら
れた偏光層との間、前記光反射層と前記液晶層との間、
前記液晶層と前記液晶層に対し光反射層側と反対側に設
けられた偏光層との間の少なくとも１箇所に光学異方性
を有する位相差層を少なくとも一層以上設けたことを特
徴とする請求項１記載の液晶表示装置。2. A light reflecting layer having a property of transmitting a part of the incident light according to claim 1 and a polarizing layer provided on the light reflecting plate side with respect to the liquid crystal layer, the light reflecting layer and the liquid crystal layer. Between the layers,
It is characterized in that at least one retardation layer having optical anisotropy is provided at at least one location between the liquid crystal layer and a polarizing layer provided on a side opposite to the light reflecting layer with respect to the liquid crystal layer. The liquid crystal display device according to claim 1.
することを特徴とする液晶表示装置を用いた電子機器。3. An electronic device using a liquid crystal display device, characterized in that it has the liquid crystal display device according to claims 1 and 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04666091A JP3233649B2 (en) | 1991-03-12 | 1991-03-12 | Liquid crystal display device and electronic device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04666091A JP3233649B2 (en) | 1991-03-12 | 1991-03-12 | Liquid crystal display device and electronic device using the same |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10036477A Division JP3022465B2 (en) | 1998-02-18 | 1998-02-18 | Liquid crystal display device and electronic device using the same |
| JP2000087267A Division JP3225959B2 (en) | 1991-03-12 | 2000-03-27 | Liquid crystal display device and electronic equipment using liquid crystal display device |
| JP2001103792A Division JP3345780B2 (en) | 2001-04-02 | 2001-04-02 | Liquid crystal display and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04282613A true JPH04282613A (en) | 1992-10-07 |
| JP3233649B2 JP3233649B2 (en) | 2001-11-26 |
Family
ID=12753491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04666091A Expired - Lifetime JP3233649B2 (en) | 1991-03-12 | 1991-03-12 | Liquid crystal display device and electronic device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3233649B2 (en) |
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|---|---|---|---|---|
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1991
- 1991-03-12 JP JP04666091A patent/JP3233649B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JP3233649B2 (en) | 2001-11-26 |
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