JPH0457011A - Miniature display device - Google Patents
Miniature display deviceInfo
- Publication number
- JPH0457011A JPH0457011A JP2168807A JP16880790A JPH0457011A JP H0457011 A JPH0457011 A JP H0457011A JP 2168807 A JP2168807 A JP 2168807A JP 16880790 A JP16880790 A JP 16880790A JP H0457011 A JPH0457011 A JP H0457011A
- Authority
- JP
- Japan
- Prior art keywords
- prism
- liquid crystal
- crystal panel
- transmission light
- color
- 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 claims abstract description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 6
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、コンピュータやビデオテープレコーダ等の各
種電子機器に好適な小型ディスプレイ装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a small display device suitable for various electronic devices such as computers and video tape recorders.
（ロ）従来の技術
現在、上記のような電子機器のディスプレイ装置は大型
化や薄型化など多種多様な動向を呈しているが、その一
つの流れにパーソナル化の傾向がある。(B) Conventional Technology Currently, the display devices of electronic devices as described above are showing various trends such as becoming larger and thinner, and one trend is toward personalization.
このようなパーソナル用途向けの小型ディスプレイ装置
の一例として、使用者の頭部に装着して使用するように
したものが、特開昭５９−１１７８７６号公報［ＨＯ４
Ｎ ５／６４１で提案されている。即ち、この従来例は
、第５図に示すゴーグル状の表示装置本体（２１）内に
第６図に示すような小型の液晶パネル（２３）と拡大用
レンズ（２４）等の光学系を内蔵せしめ、そのレンズ（
２４）によって上記パネル」二の映像（２７）の拡大虚
像（２８）を観察するようにしたものである。尚、第６
図に於て、（２５）は光路変更光用のプリズム、（１３
）は使用者（２６）の目を表している。As an example of such a small display device for personal use, a device that is attached to the user's head is disclosed in Japanese Patent Application Laid-open No. 59-117876 [HO4
Proposed in N 5/641. That is, in this conventional example, an optical system such as a small liquid crystal panel (23) and a magnifying lens (24) as shown in FIG. 6 is built into a goggle-shaped display device main body (21) shown in FIG. Sorry, that lens (
24), an enlarged virtual image (28) of the image (27) of the second panel is observed. Furthermore, the 6th
In the figure, (25) is a prism for optical path changing light, (13
) represents the eyes of the user (26).
（ハ）発明が解決しようとする問題点
上記従来例のものは単色の液晶パネルを一枚用いたモノ
クロ表示であるので、これをカラー化することが考えら
れる。その際、Ｒ（赤）、Ｇ（緑）、Ｂ（青）ストライ
プフィルタを内蔵した液晶パネルを一枚使用すれば、比
較的簡単にカラー表示を実現できるように思われる。(c) Problems to be Solved by the Invention Since the conventional example described above is a monochrome display using a single monochrome liquid crystal panel, it is conceivable to convert it into a color display. In this case, it seems that color display can be achieved relatively easily by using a single liquid crystal panel with built-in R (red), G (green), and B (blue) stripe filters.
しかしながら、このような方法で充分に解像度の高いカ
ラー画像を実現するには、高密度、高画素数の液晶パネ
ルを必要とするが、使用する液晶パネルが小さい（１イ
ンチ程度）ことを考えると、その製作が極めて難しく、
また、光の透過率が大きく低下して充分な輝度が得られ
ないという欠点がある。However, in order to realize color images with sufficiently high resolution using this method, a liquid crystal panel with high density and a high number of pixels is required, but considering that the liquid crystal panel used is small (about 1 inch), , its production is extremely difficult;
Another disadvantage is that the light transmittance is greatly reduced and sufficient brightness cannot be obtained.
そこで、本発明は、高輝度と高解像度が得られ、しかも
、パーソナル用として充分に小型化できる小型ディスプ
レイ装置を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a compact display device that can provide high brightness and high resolution, and can be sufficiently miniaturized for personal use.
（ニ）問題点を解決するための手段
本発明のディスプレイ装置では、ＲＧＢ各フィルタをそ
れぞれ装着した３枚の透過型液晶パネルと、Ｒ，Ｂ各反
射面を備え上記各パネルの透過光を合成するプリズム手
段と、このプリズム手段の出力光が入射される拡大用レ
ンズ手段を巧みに組み合わせてなる。(d) Means for Solving the Problems The display device of the present invention includes three transmissive liquid crystal panels equipped with RGB filters, and R and B reflective surfaces, and synthesizes the transmitted light from each of the panels. The prism means is skillfully combined with a magnifying lens means into which the output light of the prism means is incident.
（ホ）作用
上記の構成により、前記各液晶パネルからの透過光が上
記プリズム手段で合成され、その合成によるカラー映像
の」二記レンズ手段による拡大像が観察される。(E) Effect With the above configuration, the transmitted light from each of the liquid crystal panels is combined by the prism means, and an enlarged image of the combined color image by the lens means (2) is observed.
（へ）実施例
第１図〜第３図は本発明による小型ディスプレイ装置の
一実施例を示している。第１図はその動作原理を示す概
略図であり、（１）はその前面にＲフィルタが装着され
た透過型の液晶パネル、（２）（３）はＢフィルタ及び
Ｇフィルタがそれぞれ同様に装着された透過型液晶パネ
ル、（４）（５）（６）はその各液晶パネルの背面に配
置され冷陰極平面螢光灯タイプのバックライト、（７）
はその三つの入射面が上記各液晶パネルに（１）（２）
（３）にそれぞれ対向するよう配置された色合成用のプ
リズム手段、（１２）はその出射面に配置された拡大用
の凸レンズである。(f) Embodiment FIGS. 1 to 3 show an embodiment of a small display device according to the present invention. Figure 1 is a schematic diagram showing the principle of operation. (1) is a transmissive liquid crystal panel with an R filter attached to its front, and (2) and (3) are B and G filters attached in the same way. Transmissive liquid crystal panels (4), (5), and (6) are cold cathode flat fluorescent lamp type backlights arranged on the back of each liquid crystal panel, (7)
The three incident planes are (1) (2) on each of the above liquid crystal panels.
(3) is a prism means for color synthesis arranged to face each other, and (12) is a convex lens for magnification arranged on its exit surface.
前記プリズム手段（７）は第２図に示されるように断面
が二等辺三角形をなす４個の三角柱状プリズム（８）〜
（１１）が互いに貼着されてなり、その第１プリズム（
８）の一方の接合面（８ａ）にはＲ反射膜が、また第２
プリズム（９）の一方の接合面（９ａ）にはＢ反射膜が
それぞれ形成され、更に第４プリズム（１１）の接合面
（ｌｌａ）（ｌｌｂ）にはＢ反射膜とＲ反射膜がそれぞ
れ形成されているが、第３プリズム（１０）の両接合面
（１０ａ）（１０ｂ）にはそれらの反射膜が何ら形成さ
れていない構造となっている。なお、これら各プリズム
（８）〜（１１）は、プリズムと略同−屈折率の透明接
着剤によって貼着されている。The prism means (7) includes four triangular prisms (8) whose cross section is an isosceles triangle as shown in FIG.
(11) are attached to each other, and the first prism (
8) has an R reflective film on one joint surface (8a), and a second
A B reflective film is formed on one joint surface (9a) of the prism (9), and a B reflective film and an R reflective film are formed on the joint surfaces (lla and llb) of the fourth prism (11), respectively. However, the third prism (10) has a structure in which no reflective film is formed on both the joint surfaces (10a) and (10b). Note that each of these prisms (8) to (11) is pasted with a transparent adhesive having approximately the same refractive index as the prism.
したがって、この構造によれば、第１図から分かるよう
に、液晶パネル（１）からのＲ透過光は第１プリズム（
８）の接合面（８ａ）または第４プリズム（１１）の接
合面（１，１，ｂ ）で反射され第４プリズム（１１）
から出射し、液晶パネル（２）からのＢ透過光は第２プ
リズム（９）の接合面（９ａ）または第４プリズム（１
１）の接合面（ｌｌａ）で反射されて第４プリズム（１
１）から出射し、液晶パネル（３）からのＧ透過光は第
３第４プリズム（１０）（１１）内をそのまま直進して
第４プリズム（１１）から出射する。Therefore, according to this structure, as can be seen from FIG. 1, the R transmitted light from the liquid crystal panel (1) is transmitted through the first prism (
8) or the cemented surface (1, 1, b) of the fourth prism (11) and is reflected by the fourth prism (11).
The B transmitted light from the liquid crystal panel (2) is emitted from the joint surface (9a) of the second prism (9) or the fourth prism (1).
1) is reflected at the joint surface (lla) of the fourth prism (1).
1), the G transmitted light from the liquid crystal panel (3) travels straight through the third and fourth prisms (10) and (11), and exits from the fourth prism (11).
その際、」−記ＲＧＢ各透過光の出射端での光軸が一致
するように、液晶パネル（１）（２）（３）がプリズム
手段（７）の各入射面に正確に位置決めされて取付けら
れているので、上記各透過光が合成されることになり、
したがって液晶パネル（１）（２）（３）によるカラー
映像（１４）が第４プリズム（１１）の出射面に現れる
。そして、このカラー映像が凸レンズ（１２）に入射さ
れることにより、カラー拡大映像（１５）が観察される
ことになる。At that time, the liquid crystal panels (1), (2), and (3) are accurately positioned on each incident surface of the prism means (7) so that the optical axes of the RGB transmitted lights at the output ends coincide with each other. Since the above-mentioned transmitted light is combined,
Therefore, a color image (14) from the liquid crystal panels (1), (2), and (3) appears on the exit surface of the fourth prism (11). When this color image is incident on the convex lens (12), an enlarged color image (15) is observed.
なお、各液晶パネル（１）（２）（３）は、通常の液晶
テレビに採用されている周知の方法で駆動されるが、今
、第１図の矢印Ａ方向が液晶パネル（３）の垂直走査方
向であるとすると、液晶パネル（１）（２）の垂直走査
方向はそれぞれ矢印Ｂ、Ｃのように互いに逆方向になる
。Note that each liquid crystal panel (1), (2), and (3) is driven by a well-known method used in ordinary liquid crystal televisions, but now the direction of arrow A in Fig. 1 is the direction of the liquid crystal panel (3). Assuming that it is a vertical scanning direction, the vertical scanning directions of the liquid crystal panels (1) and (2) are opposite to each other as indicated by arrows B and C, respectively.
第３図は上記のように構成された液晶パネルとバックラ
イトとプリズム手段からなる２個のユニット（２０）（
２０）をレンズ（１２）（１２）と共に左右の目に対向
するよう従来例（第５図）のようなゴーグル状の表示装
置本体（２１）内に組み込んだ例を示しており、（２２
）（２２）は内蔵されたヘッドホーンであるが、この他
に上記ユニッ） （２０）（２０）の各液晶パネルの駆
動回路も内蔵されるが、それらは図示を省略している。FIG. 3 shows two units (20) consisting of a liquid crystal panel, a backlight, and a prism means configured as described above.
20) is incorporated into the goggle-shaped display device main body (21) like the conventional example (Fig. 5) so as to face the left and right eyes together with the lenses (12) (12).
) (22) is a built-in headphone, and in addition to this, drive circuits for each of the liquid crystal panels (20) and (20) are also built-in, but these are not shown.
なお、上記ユニッＩ−（２０）（２０）の各液晶パネル
に互いに位相差の若干界なる映像信号を与えるようにす
れば、カラー立体映像を観察できる。Note that if video signals having a slightly different phase difference are applied to each of the liquid crystal panels of the units I-(20) and (20), a color stereoscopic image can be observed.
また、第４図は第１図に代わる他の実施例を示しており
、第１図と対応する部分には同一番号を付して説明を省
略するが、この実施例では第１図のプリズム手段（７）
を接合面（１６ａ）にＲ反射膜が形成された第１プリズ
ム（１６）と、接合面（１７ａ）にＢ反射膜が形成され
た第２プリズム（１７）と、接合面（１８ａ）にそれら
の反射膜が形成されていない第３プリズム（］８）とに
よって構成したことを特徴としている。In addition, FIG. 4 shows another embodiment in place of FIG. 1, and parts corresponding to those in FIG. Means (7)
The first prism (16) has an R reflective film formed on its bonded surface (16a), the second prism (17) has a B reflective film formed on its bonded surface (17a), and the two prisms have a bonded surface (18a). It is characterized in that it is constructed by a third prism (]8) on which no reflective film is formed.
（ト）発明の効果
本発明に依れば、ＲＧＢ各専用の３枚の液晶パネルと色
合成用のプリズム手段を使用することにより高輝度■、
つ高解像度のカラー映像を実現でき、しかも、パーソナ
ル用途として充分に小型化できる小型ディスプレイ装置
を提供できる。(G) Effects of the Invention According to the present invention, by using three liquid crystal panels dedicated to each of RGB and a prism means for color synthesis, high brightness can be achieved.
It is possible to provide a compact display device that can realize high-resolution color images and can be sufficiently miniaturized for personal use.
第１図〜第３図は本発明の一実施例を示し、第１図は動
作原理を示す概略図、第２図はその要部のユニットを示
す斜視図、第３図はディスプレイ装置全体を示す断面図
である。第４図は他の実施例の動作原理を示す概略図で
ある。
第５図及び第６図は従来例を示し、第５図は動作原理を
示す概略図、第６図はディスプレイ装置の頭部への装着
状態を一部断面して示す平面図である。
（１）（２）（３）：液晶パネル、（４）（５）（６）
：バックライト、（７）ニブリズム手段、（８）（９）
（１０）プリズム、
拡大用凸レンズ1 to 3 show one embodiment of the present invention, FIG. 1 is a schematic diagram showing the principle of operation, FIG. 2 is a perspective view showing the main unit, and FIG. 3 shows the entire display device. FIG. FIG. 4 is a schematic diagram showing the operating principle of another embodiment. 5 and 6 show a conventional example, FIG. 5 is a schematic diagram showing the principle of operation, and FIG. 6 is a partially sectional plan view showing the state in which the display device is attached to the head. (1) (2) (3): LCD panel, (4) (5) (6)
: Backlight, (7) Nibrism means, (8) (9)
(10) Prism, convex lens for magnification
Claims (1)
る三方向に配置された３個の透過型液晶パネルと、 前記各フィルタの背面にそれぞれ装着されたバックライ
トと、 互いに組み合わされる複数個のプリズムの一部にＲ反射
面及びＢ反射面が形成され、前記各液晶パネルにそれぞ
れ対向するＲＧＢ各入射面と一つの出射面とを備える色
合成用プリズム手段と、前記プリズム手段の出射面側に
配置され、その出射面から出た合成出力光が入射する拡
大用レンズ手段とを備え、 前記液晶パネル上に表示される映像の合成カラー拡大虚
像を前記レンズ手段を介して観察するようにしてなる小
型ディスプレイ装置。(1) Three transmissive liquid crystal panels with RGB filters attached to the front and arranged in three different directions, backlights attached to the back of each of the filters, and a plurality of prisms combined with each other. a color synthesis prism means having an R reflective surface and a B reflective surface formed in a part thereof, and comprising RGB incident surfaces and one exit surface facing each of the liquid crystal panels; and a color synthesis prism means disposed on the exit surface side of the prism means. and a magnifying lens means into which the composite output light emitted from the exit surface enters, and a composite color magnified virtual image of the image displayed on the liquid crystal panel is observed through the lens means. display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168807A JP2786930B2 (en) | 1990-06-27 | 1990-06-27 | Small display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168807A JP2786930B2 (en) | 1990-06-27 | 1990-06-27 | Small display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0457011A true JPH0457011A (en) | 1992-02-24 |
| JP2786930B2 JP2786930B2 (en) | 1998-08-13 |
Family
ID=15874859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2168807A Expired - Lifetime JP2786930B2 (en) | 1990-06-27 | 1990-06-27 | Small display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2786930B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371617A (en) * | 1991-10-15 | 1994-12-06 | Canon Kabushiki Kaisha | Liquid crystal projector with one modulator including a member for preventing light from another modulator from entering the one |
| US7209211B2 (en) | 1995-10-23 | 2007-04-24 | Hitachi, Ltd. | Active matrix type liquid crystal display apparatus |
| US7355795B1 (en) | 1994-06-13 | 2008-04-08 | Canon Kabushiki Kaisha | Head-up display device with curved optical surface having total reflection |
| JP2020003710A (en) * | 2018-06-29 | 2020-01-09 | セイコーエプソン株式会社 | Head-mounted type display device |
| CN116504147A (en) * | 2023-06-28 | 2023-07-28 | 元旭半导体科技(无锡)有限公司 | LED direct-display projection array light-emitting module and display screen |
-
1990
- 1990-06-27 JP JP2168807A patent/JP2786930B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371617A (en) * | 1991-10-15 | 1994-12-06 | Canon Kabushiki Kaisha | Liquid crystal projector with one modulator including a member for preventing light from another modulator from entering the one |
| US7355795B1 (en) | 1994-06-13 | 2008-04-08 | Canon Kabushiki Kaisha | Head-up display device with curved optical surface having total reflection |
| US7209211B2 (en) | 1995-10-23 | 2007-04-24 | Hitachi, Ltd. | Active matrix type liquid crystal display apparatus |
| US7433012B2 (en) | 1995-10-23 | 2008-10-07 | Hitachi, Ltd. | Active matrix type liquid crystal display apparatus |
| US7684005B2 (en) | 1995-10-23 | 2010-03-23 | Hitachi, Ltd. | Active matrix type liquid crystal display apparatus |
| JP2020003710A (en) * | 2018-06-29 | 2020-01-09 | セイコーエプソン株式会社 | Head-mounted type display device |
| US11550159B2 (en) | 2018-06-29 | 2023-01-10 | Seiko Epson Corporation | Head-mounted display apparatus |
| CN116504147A (en) * | 2023-06-28 | 2023-07-28 | 元旭半导体科技(无锡)有限公司 | LED direct-display projection array light-emitting module and display screen |
| CN116504147B (en) * | 2023-06-28 | 2023-09-01 | 元旭半导体科技(无锡)有限公司 | LED direct-display projection array light-emitting module and display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2786930B2 (en) | 1998-08-13 |
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