JPH04204818A - Liquid crystal color display device - Google Patents
Liquid crystal color display deviceInfo
- Publication number
- JPH04204818A JPH04204818A JP2339208A JP33920890A JPH04204818A JP H04204818 A JPH04204818 A JP H04204818A JP 2339208 A JP2339208 A JP 2339208A JP 33920890 A JP33920890 A JP 33920890A JP H04204818 A JPH04204818 A JP H04204818A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- rubbing
- divided regions
- display device
- glass substrate
- 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 53
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 238000011282 treatment Methods 0.000 claims abstract description 7
- 239000003086 colorant Substances 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 10
- 239000007888 film coating Substances 0.000 description 7
- 238000009501 film coating Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、スーパーツイストネマスティック型（以下
、ｒＳＴＮ型」と称する）の液晶板を用いて所望のパタ
ーンをカラー表示するための液晶カラー表示装置に関す
る。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a liquid crystal color display for displaying a desired pattern in color using a super twisted nematic type (hereinafter referred to as rSTN type) liquid crystal plate. Regarding equipment.
〈従来の技術〉
従来、その種液晶カラー表示装置には、三原色のカラー
フィルタを内蔵した構造の液晶板が用いられている。こ
の液晶カラー表示装置は、前記液晶板を中間に挟んで一
対の偏光板を配備し、一方の偏光板は光源と対向させ、
他方の偏光板は表示面となして視覚に向けて位置させて
いる。<Prior Art> Conventionally, such liquid crystal color display devices have used a liquid crystal plate having a built-in color filter for three primary colors. This liquid crystal color display device includes a pair of polarizing plates with the liquid crystal plate in between, one polarizing plate facing the light source,
The other polarizing plate serves as a display surface and is positioned toward the viewer.
〈発明が解決しようとする問題点〉
しかながら前記液晶板は、三原色のカラーフィルタによ
る光の色混合で色表現を行う方式であるため、扱うデー
タ量が増し、データ処理が複雑となるばかりでなく、製
造コストが著しく高価につくという問題がある。<Problems to be Solved by the Invention> However, since the liquid crystal panel expresses colors by mixing the colors of light using color filters of three primary colors, the amount of data handled increases and data processing becomes complicated. However, there is a problem in that the manufacturing cost is extremely high.
そこで５ＴＮＷの液晶板を多層に重ねて、背景の色と文
字などのパターンの色との組み合わせを種々に設定でき
る構成の液晶カラー表示装置が提案された。Therefore, a liquid crystal color display device has been proposed in which 5TNW liquid crystal panels are stacked in multiple layers and the combinations of the background color and the color of patterns such as characters can be set in various ways.
この液晶カラー表示装置は、例えば２枚の液晶板を中間
に挟んで一対の偏光板を配備して成るもので、一方の液
晶板には液晶表示回路を接続してこの液晶板の各画素毎
に表示すべき所望のパターンに応じた２値の表示データ
を与え、他方の液晶板には領域設定回路を接続してこの
液晶板の各画素毎に表示領域を異なる色彩領域に分割す
るための２値の領域データを与えるものである。This liquid crystal color display device is made up of, for example, two liquid crystal plates sandwiched between them and a pair of polarizing plates, and one liquid crystal plate is connected to a liquid crystal display circuit for each pixel of this liquid crystal plate. Binary display data corresponding to the desired pattern to be displayed is given to the LCD panel, and an area setting circuit is connected to the other LCD panel to divide the display area into different color regions for each pixel of this LCD panel. It provides binary area data.
しかしながらこの種液晶カラー表示装置は、色彩領域の
分割数に応じて液晶板を多層に重ねる必要があるため、
装置全体の厚みが増して大型化するという問題がある。However, this type of liquid crystal color display device requires multiple layers of liquid crystal panels depending on the number of divisions of the color area.
There is a problem in that the overall thickness of the device increases, making it larger.
この発明は、上記問題に着目してなされたもので、−層
の液晶板であっても多数の色彩領域の設定が可能な液晶
カラー表示装置を提供することを目的とする。The present invention has been made in view of the above problem, and an object of the present invention is to provide a liquid crystal color display device in which a large number of color regions can be set even with a -layer liquid crystal plate.
〈問題点を解決するための手段〉
この発明は、スーパーツイストネマスティック型の液晶
板を有する液晶表示装置において、前記液晶板は、中間
に液晶を介在させる一対のガラス基板を備え、各ガラス
基板には複数に分割した領域毎にラビング角度および方
向が異なるラビング処理を施して成るものである。<Means for Solving the Problems> The present invention provides a liquid crystal display device having a super twisted nemastic type liquid crystal plate, in which the liquid crystal plate includes a pair of glass substrates with a liquid crystal interposed therebetween, and each glass substrate The area is divided into a plurality of areas, and each area is subjected to a rubbing process with different rubbing angles and directions.
く作用〉
分割した領域毎にラビング角度および方向を違えてラビ
ング処理を施すので、−層の液晶板をもって各分割領域
毎に異なった色の表示か可能となる。Effect> Since the rubbing process is performed by changing the rubbing angle and direction for each divided area, it is possible to display a different color in each divided area using a -layer liquid crystal plate.
〈実施例〉
第１図は、この発明の一実施例にかかる液晶カラー表示
装置の構成を、また第２図は、この装置例に用いられる
液晶板１を、それぞれ示している。<Embodiment> FIG. 1 shows the configuration of a liquid crystal color display device according to an embodiment of the present invention, and FIG. 2 shows a liquid crystal plate 1 used in this device example.
この液晶板ｌは、矩形状をなす２枚のガラス基板２，３
の間に液晶を充填してその周囲をシールした構造のもの
である。各ガラス基板２゜３には直交する方向に透明の
共通電極および画素電極（図示せず）が設けてあり、こ
れら電極に対し液晶が電界反応するだけの電圧をオン・
オフさせて液晶を画素単位で反応作用させる。This liquid crystal panel l consists of two rectangular glass substrates 2 and 3.
It has a structure in which liquid crystal is filled between the two and the surrounding area is sealed. A transparent common electrode and a pixel electrode (not shown) are provided on each glass substrate 2.3 in the orthogonal direction, and a voltage sufficient to cause the liquid crystal to react with an electric field is applied to these electrodes.
When turned off, the liquid crystal reacts on a pixel-by-pixel basis.
液晶板１は液晶分子のねじれ角度が１８０°〜２７０°
のＳＴＮ型のものであって、この液晶板１を２枚の偏光
板４，５て挟み、一方の偏光板４は図示しない光源に対
向させ、他方の偏光板５は表示面となす。The liquid crystal plate 1 has a twist angle of liquid crystal molecules of 180° to 270°.
This liquid crystal plate 1 is sandwiched between two polarizing plates 4 and 5, with one polarizing plate 4 facing a light source (not shown) and the other polarizing plate 5 serving as a display surface.
各ガラス基板２，３は、その対向面に配向膜塗布層６を
備えており、この実施例では、配向膜塗布層６を２個の
領域７ａ、７ｂに分割すると共に、前記配向膜塗布層６
には前記分割領域７ａ、７ｂ毎にラビング角度および方
向か異なるラビング処理を施しである。第１図および第
２図中、実線の矢印ＡＩ、Ｂｌは上側のガラス基板２に
おける各分割領域７ａ、７ｂのラビング方向を、点線の
矢印Ａ２．Ｂ２は下側のガラス基板３における各分割領
域７ａ、７ｂのラビング方向を、それぞれ示す。またθ
ｌ〜θ４はガラス基板２．３の各辺を基準とするラビン
グ角度であり、αおよびβは各偏光板４，５の偏光軸の
方向を示す。Each glass substrate 2, 3 is provided with an alignment film coating layer 6 on its opposing surface. In this embodiment, the alignment film coating layer 6 is divided into two regions 7a, 7b, and the alignment film coating layer 6 is divided into two regions 7a, 7b. 6
The rubbing process is performed with different rubbing angles and directions for each of the divided areas 7a and 7b. 1 and 2, solid line arrows AI and Bl indicate the rubbing direction of each divided region 7a and 7b on the upper glass substrate 2, and dotted line arrow A2. B2 indicates the rubbing direction of each divided region 7a, 7b on the lower glass substrate 3, respectively. Also θ
1 to θ4 are rubbing angles based on each side of the glass substrate 2.3, and α and β indicate the direction of the polarization axis of each polarizing plate 4, 5.
いまａｌおよびθ２を３０°、θ３を９０°、θ４を６
０°、αを２０°、βを９０°とした場合、この液晶板
ｌに対し、第３図に示す如く、ｔとｄ２との間の駆動電
圧をオン状態に設定し、ｔとｄｉとの間の駆動電圧をオ
フ状態に設定すると、分割領域７ａにおけるａｌの領域
か青色、ａ２の領域が黄色、分割領域７ｂにおけるｂｌ
の領域が緑色、ｂ２の領域か紫色のカラー表示か実現さ
れる。Now al and θ2 are 30°, θ3 is 90°, θ4 is 6
0°, α is 20°, and β is 90°, as shown in FIG. When the drive voltage between is set to off state, the area al in the divided area 7a is blue, the area a2 is yellow, and the area bl in the divided area 7b is blue.
The area b2 is displayed in green, and the area b2 is displayed in purple.
第４図〜第６図は、上記液晶板１の各ガラス基板２，３
に対するラビング処理の方法を示している。4 to 6 show each glass substrate 2, 3 of the liquid crystal plate 1.
This shows a method of rubbing processing for.
図中、６はガラス基板の表面に設けられた矩形状の配向
膜塗布層を示しており、この配向膜塗布層６の一方の分
割領域７ａ上をアルミ板のマスク８で覆い、開放された
他方の分割領域７ｂに対し矢印方向へラビング処理を施
す。In the figure, reference numeral 6 indicates a rectangular alignment film coating layer provided on the surface of the glass substrate, and one divided region 7a of this alignment film coating layer 6 is covered with an aluminum plate mask 8, and then opened. A rubbing process is performed on the other divided region 7b in the direction of the arrow.
前記分割領域７ｂに対するラビング処理が完了すると、
つぎにその分割領域７ｂ上を前記マスク８で覆い、他方
の分割領域７ａに対し前記と異なるラビング角度および
方向へラビング処理を施す。When the rubbing process for the divided area 7b is completed,
Next, the divided region 7b is covered with the mask 8, and the other divided region 7a is rubbed at a different rubbing angle and direction.
第７図は、この発明の他の実施例にかかる液晶カラー表
示装置の構成を示している。FIG. 7 shows the structure of a liquid crystal color display device according to another embodiment of the invention.
この実施例は、２枚の液晶板１０．１１を２枚の偏光板
１２．１３で挟んだ構造のものであって、一方の液晶板
１１は配向膜塗布層１４を３個の領域１５ａ、１５ｂ、
１５ｃに分割して、前記配向膜塗布層１４には各分割領
域毎にラビング角度および方向が異なるラビング処理を
施している。This embodiment has a structure in which two liquid crystal plates 10.11 are sandwiched between two polarizing plates 12.13, and one liquid crystal plate 11 has an alignment film coating layer 14 in three regions 15a, 15b,
The alignment film coating layer 14 is divided into 15c and subjected to rubbing treatment with different rubbing angles and directions for each divided region.
同図中、一方の液晶板１１における実線の矢印Ａｌ、Ｂ
１．ＣＩは上側のガラス基板１６における各分割領域１
５ａ、１５ｂ、１５ｃのラビング方向を、点線の矢印Ａ
２．Ｂ２．Ｃ２は下側のガラス基板１７における各分割
領域１５ａ。In the figure, solid line arrows Al and B on one liquid crystal plate 11
1. CI is each divided area 1 on the upper glass substrate 16
The rubbing direction of 5a, 15b, 15c is indicated by the dotted arrow A.
2. B2. C2 indicates each divided region 15a on the lower glass substrate 17.
１５ｂ、１５ｃのラビング方向を、それぞれ示し、また
他方の液晶板ＩＯにおける実線の矢印りが上側のガラス
基板１８のラビング方向を、点線の矢印Ｅが下側のガラ
ス基板１９のラビング方向を、それぞれ示す。さらに０
１〜θ８はガラス基板の各辺を基準とするラビング角度
であり、αおよびβは各偏光板１２．１３の偏光軸の方
向を示す。15b and 15c, and the solid arrow on the other liquid crystal plate IO indicates the rubbing direction on the upper glass substrate 18, and the dotted arrow E indicates the rubbing direction on the lower glass substrate 19, respectively. show. 0 more
1 to θ8 are rubbing angles based on each side of the glass substrate, and α and β indicate the direction of the polarization axis of each polarizing plate 12, 13.
いまθ１〜θ４を６００、Ｂ５およびＢ６を１５°、Ｂ
７およびＢ８を６０°とし、αおよびβを９００とした
場合、第８図に示す如く、分割領域１５ａでは白黒表示
、分割領域１５ｂ。Now θ1 to θ4 are 600, B5 and B6 are 15°, B
7 and B8 are 60 degrees, and α and β are 900, as shown in FIG. 8, the divided area 15a is displayed in black and white, and the divided area 15b is displayed in black and white.
１５ｃではカラー表示か可能である。15c allows color display.
〈発明の効果〉
この発明は上記の如く、スーパーツイストネマスティッ
ク型の液晶板において、中間に液晶を介在させる一対の
ガラス基板に対し、複数に分割した領域毎にラビング角
度および方向か異なるラビング処理を施したから、−層
の液晶板をもって各分割領域毎に異なった色の表示が可
能となり、装置全体の薄型化を実現できるという顕著な
効果を奏する。<Effects of the Invention> As described above, the present invention applies a rubbing treatment in which a pair of glass substrates with a liquid crystal interposed between them in a super twisted nemastic type liquid crystal plate is subjected to a rubbing treatment in which the rubbing angle and direction are different for each divided region. Because of this, it is possible to display a different color in each divided area using a -layer liquid crystal plate, and this has the remarkable effect of making the entire device thinner.
第１図はこの発明の一実施例にかかる液晶カラー表示装
置の構成を示す分解斜視図、第２図は液晶板の平面図、
第３図は第１図の実施例のカラー表示の状態を示す説明
図、第４図および第５図はラビング処理方法を示す斜面
図、第６図は第４図Ａ−Ａ線に沿う断面図、第７図はこ
の発明の他の実施例の構成を示す分解斜視図、第８図は
第７図の実施例のカラー表示の状態を示す説明図である
。
１、１０．１１・・・・液晶板FIG. 1 is an exploded perspective view showing the configuration of a liquid crystal color display device according to an embodiment of the present invention, FIG. 2 is a plan view of a liquid crystal plate,
FIG. 3 is an explanatory diagram showing the color display state of the embodiment shown in FIG. 1, FIGS. 4 and 5 are perspective views showing the rubbing treatment method, and FIG. 6 is a cross section taken along line A-A in FIG. 4. 7 is an exploded perspective view showing the structure of another embodiment of the present invention, and FIG. 8 is an explanatory diagram showing a color display state of the embodiment of FIG. 7. 1, 10.11...Liquid crystal board
Claims (1)
晶表示装置において、 前記液晶板は、中間に液晶を介在させる一対のガラス基
板を備え、各ガラス基板には複数に分割した領域毎にラ
ビング角度および方向が異なるラビング処理を施して成
る液晶カラー表示装置。[Claims] In a liquid crystal display device having a super twisted nemastic type liquid crystal plate, the liquid crystal plate includes a pair of glass substrates with a liquid crystal interposed between them, and each glass substrate has a plurality of divided regions. A liquid crystal color display device that is subjected to rubbing treatment with different rubbing angles and directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2339208A JPH04204818A (en) | 1990-11-30 | 1990-11-30 | Liquid crystal color display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2339208A JPH04204818A (en) | 1990-11-30 | 1990-11-30 | Liquid crystal color display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04204818A true JPH04204818A (en) | 1992-07-27 |
Family
ID=18325267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2339208A Pending JPH04204818A (en) | 1990-11-30 | 1990-11-30 | Liquid crystal color display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04204818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504604A (en) * | 1992-01-22 | 1996-04-02 | Nec Corporation | Liquid crystal display elements with opposite twist domains aligned in the same direction on one substrate |
| US5856857A (en) * | 1996-02-28 | 1999-01-05 | Samsung Electronics Co., Ltd. | Domain divided liquid crystal display panels having alternately rubbed pixel areas and methods of fabrication therefor |
-
1990
- 1990-11-30 JP JP2339208A patent/JPH04204818A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504604A (en) * | 1992-01-22 | 1996-04-02 | Nec Corporation | Liquid crystal display elements with opposite twist domains aligned in the same direction on one substrate |
| US5856857A (en) * | 1996-02-28 | 1999-01-05 | Samsung Electronics Co., Ltd. | Domain divided liquid crystal display panels having alternately rubbed pixel areas and methods of fabrication therefor |
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