JPS61144870A - Contact-type picture read-out element - Google Patents
Contact-type picture read-out elementInfo
- Publication number
- JPS61144870A JPS61144870A JP59268906A JP26890684A JPS61144870A JP S61144870 A JPS61144870 A JP S61144870A JP 59268906 A JP59268906 A JP 59268906A JP 26890684 A JP26890684 A JP 26890684A JP S61144870 A JPS61144870 A JP S61144870A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- light signal
- photoelectric conversion
- color
- red
- 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
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14665—Imagers using a photoconductor layer
- H01L27/14667—Colour imagers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Facsimile Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〈発明の技術分野〉
本発明は光電変換素子、特に密着型カラー画像読取り素
子の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to improvements in photoelectric conversion elements, particularly contact type color image reading elements.
〈発明の技術的背景とその問題点〉
従来の密着型画像読取り装置において、カラー画像を読
取る方式としては、各受光素子に色フィルタを装着する
方式と照明用光源の色を切り換える方式とがある。<Technical background of the invention and its problems> In conventional contact type image reading devices, methods for reading color images include a method in which a color filter is attached to each light-receiving element and a method in which the color of the illumination light source is switched. .
色フィルタを用いる方式では、分光出力を並列に取り出
すことができるため高速走査が可能であるが、素子形成
が複雑であり、赤（Ｒ）・緑（Ｇ）・青（Ｂ）に色分解
した場合３つの素子の組で原稿上の１つの画素を読み取
ることになり、単色画像読取り装置に比べて分解能を劣
化させることになる。The method using color filters allows high-speed scanning because the spectral output can be extracted in parallel, but the element formation is complicated and the colors are separated into red (R), green (G), and blue (B). In this case, one pixel on the document is read using a set of three elements, resulting in lower resolution compared to a monochromatic image reading device.
一方、照明用光源の色を切り換える方式では、３種類の
光源が必要であり装置全体の小型化を制限してしまう。On the other hand, the method of switching the color of the illumination light source requires three types of light sources, which limits miniaturization of the entire device.
更に、分光出力が並列に取シ出きれないため、信号処理
も複雑になり、読取り速度は遅く高速走査は非常に困難
になっている。Furthermore, since the spectral outputs cannot be extracted in parallel, signal processing becomes complicated, and the reading speed is slow, making high-speed scanning extremely difficult.
〈発明の目的〉
本発明は上記の事情に鑑みてなされたもので、色分解信
号を並列に取り出せ小型で高速走査が可能な色フィルタ
装着方式の、分解能が良好で、かつ素子形成の容易な密
着型カラー画像読取り素子を提供することを目的とする
。<Object of the Invention> The present invention has been made in view of the above-mentioned circumstances, and provides a color filter mounting method that can take out color separation signals in parallel, is compact and capable of high-speed scanning, has good resolution, and is easy to form elements. An object of the present invention is to provide a contact type color image reading element.
〈発明の構成〉
上記目的を達成するため、本発明の密着型カラー画偉読
取り素子は、一つの電圧印加電極に対し、この電圧印加
電極の三方向に光信号出力取出し電極を配設して三つの
光電変換素子を形成し、各々の光電変換素子、に原画か
らの光を三原色の光に分離する色フィルタ要素を装着し
、上記の電圧印加電極の３方向に配設した光信号出力取
出し電極より色分解信号を並列に取り出すように構成し
ておシ、本発明の実施例によれば、対向電極構造の受光
素子アレイにおいて、１つめ正方形の電圧印加電極に対
して、３方向に信号出力取出し電極を配することにより
、３つの光電変換素子を形成し、それぞれに赤・緑・青
の色フィルタを装着して色分解信号を並列に取出すよう
に構成している。更に、受光素子アレイ方向に隣り合っ
た光電変換素子は、信号出力取出し電極を共有すること
により、受光素子アレイ方向の画素密度を低下させるこ
とを防ぐように構成している。<Structure of the Invention> In order to achieve the above object, the contact type color image reading element of the present invention has optical signal output extraction electrodes arranged in three directions of one voltage application electrode. Three photoelectric conversion elements are formed, each photoelectric conversion element is equipped with a color filter element that separates the light from the original image into light of three primary colors, and optical signal output extraction is arranged in three directions of the voltage applying electrode. According to the embodiment of the present invention, in a light receiving element array having a facing electrode structure, signals are output in three directions with respect to the first square voltage application electrode. By arranging output extraction electrodes, three photoelectric conversion elements are formed, and red, green, and blue color filters are attached to each of them, so that color separation signals are extracted in parallel. Furthermore, photoelectric conversion elements adjacent in the light receiving element array direction are configured to share a signal output extraction electrode, thereby preventing a reduction in pixel density in the light receiving element array direction.
〈発明の実施例〉
以下、図面を参照して本発明の一実施例を詳細に説明す
る。<Embodiment of the Invention> Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例に係る密着型カラー画像読取
り素子の概略構成を示す図である。FIG. 1 is a diagram showing a schematic configuration of a contact type color image reading element according to an embodiment of the present invention.
第１図において、１は基板であり、この基板１上には光
導電膜２が形成され、この光導電膜２上に所定ピッチ（
例えば読取り画素ピッチ）毎に電圧印加電極３（３λ、
３ｂ、 ３ｃ・・・）が略正方形形状に形成され、この
電圧印加電極３の引出し線方向を除く、三方向の周囲に
はそれぞれ赤色光信号出力取り出し電極４ （４ｚａ、
４ｂｃ、・・・、）、緑色光信号取り出し電極５ （５
ａｂ、５ｃｄ、・・・）及び青色゛光信号取り出し電極
６ （６ａ、６ｂ、 ６ｃ・・・）が形成されている。In FIG. 1, 1 is a substrate, and a photoconductive film 2 is formed on this substrate 1, and a predetermined pitch (
For example, each voltage application electrode 3 (3λ,
3b, 3c...) are formed in a substantially square shape, and red light signal output extraction electrodes 4 (4za,
4bc,...,), green light signal extraction electrode 5 (5
ab, 5cd, . . . ) and blue light signal extraction electrodes 6 (6a, 6b, 6c, . . . ) are formed.
上記受光素子アレイ方向に配設された光信号出力取り出
し電極４及び５はそれぞれ、その左右に位置する光電変
換素子の取り出し電極を共有するように構成されている
。The optical signal output extraction electrodes 4 and 5 arranged in the direction of the light receiving element array are configured to share the extraction electrodes of the photoelectric conversion elements located on the left and right sides thereof.
また電極３，４間（３ｚ−４ｚａ−３ａ、 ３ｂ−４ｂ
ｃ−３ｃ、−）には赤色の光に分離する色フィルタ（赤
色透過フィルタ） ７ （７ｚａ、 ７ｂｃ、＝ ）が
配設され、電極３．５間（３ａ−５ａｂ−３ｂ 、 ３
ｃｍ５ｃｄ−３ｄ 、−）には緑色の光に分離する色フ
ィルタ（緑色透過フィルタ）８ （８ａｂ、８ｃｄ、−
）が配設され、電極３．６間には青色の光に分離する色
フィルタ（青色透過フィルタ）９が配設されている。Also, between electrodes 3 and 4 (3z-4za-3a, 3b-4b
A color filter (red transmission filter) 7 (7za, 7bc, =) that separates red light is arranged between the electrodes 3.5 (3a-5ab-3b, 3).
cm5cd-3d, -) has a color filter (green transmission filter) 8 (8ab, 8cd, -) that separates green light.
) is disposed between the electrodes 3.6, and a color filter (blue transmission filter) 9 for separating blue light is disposed between the electrodes 3.6.
上記電極４ｚａ、＋ｂｃ、・・・は共通に接続されて赤
色光信号出力端子１０に接続され、上記電極５ａｂ。The electrodes 4za, +bc, . . . are commonly connected to the red light signal output terminal 10, and the electrodes 5ab.
５ｃｄ、・・・は共通に接続されて緑色光信号出力端子
１１に接続され、上記電極６ａ、 ６ｂ 、 ６ｃ 、
・・・は共通に接続されて青色光信号出力端子１２に接
続され、上記各電圧印加電極３ｍ、３ｂ、３ｃ、・・・
はそれぞれ走査回路１３の各アナログスイッチ１４ａ。5cd, . . . are commonly connected to the green light signal output terminal 11, and the electrodes 6a, 6b, 6c,
... are commonly connected to the blue light signal output terminal 12, and the voltage application electrodes 3m, 3b, 3c, ... are connected in common to the blue light signal output terminal 12.
are each analog switch 14a of the scanning circuit 13, respectively.
１４ｂ、１４ｃ、・・・を介して電源１５に接続されて
いる０
なお、上記構成は、素子形成の一実施例の構成を示すも
のであり、基板・光導電膜・電極・色フィルタの形成手
順及び構成順序はこれに限定されるものではない。14b, 14c, . The procedure and configuration order are not limited to this.
第２図は、本発明に係る電極３〜６のサイズの一例を示
す図である。FIG. 2 is a diagram showing an example of the sizes of electrodes 3 to 6 according to the present invention.
第２図において光電変換素子として働く対向電極３〜６
の間隔はそれぞれ２５μｍ１電極幅はそれぞれ５５μｍ
とし、１画素当り素子アレイ方向に１２５μｍの幅を占
め、画素密度８画素／ｍｍの受光素子アレイを形成して
いる０そして信号取出し電極４及び５を隣り合った２つ
の画素が共有することによって、画像読取り素子の分解
能を下げることなく素子形成を非常に容易に行なうこと
ができるように構成されている。In FIG. 2, counter electrodes 3 to 6 act as photoelectric conversion elements.
The spacing between each electrode is 25 μm, and the width of each electrode is 55 μm.
As shown in FIG. The structure is such that the element can be formed very easily without lowering the resolution of the image reading element.
次に上記した密着型カラー画像読取り素子の動作につい
て説明する０
走査回路１３内のアナログスイッチ１４ ａ ＊ １４
ｂ ＋１４ｃ、・・・によって、電圧印加電極３ａ
、 ３ｂ 、 ３ｃ 、・・・を順次切換え、赤色光信
号取出し電極４ Ｚ ａ ＋ ４ ｂ ｃ ＊・・・よ
り赤色光信号を読出し、緑色光信号取出し電極５ａｂ、
５ｃｄ、・・・より緑色光信号を読出し、青色光信号取
出し電極６ ａ 、６ ｂ ＊ ６ ｃ ｒ・・・より
青色光信号を読出す。同色の光信号取出し電極は前述の
ように相互に接続されておシ、各出力線１０ 、１１
。Next, the operation of the contact type color image reading element described above will be explained.
b +14c, . . ., voltage application electrode 3a
, 3b, 3c, . . . to read out the red light signal from the red light signal extraction electrode 4 Z a + 4 b c * . . . green light signal extraction electrode 5ab,
5cd, . . . green light signals are read out, and blue light signal extraction electrodes 6 a , 6 b * 6 cr . . . are read out. The optical signal extraction electrodes of the same color are connected to each other as described above, and each output line 10, 11
.
１２よりそれぞれ赤色光信号、緑色光信号及び青色光信
号が取出される。このように、本発明の実施例によれば
ＲＧＢ信号は並列に出力され、信号処理上有利であり、
かつ、高速化に適している。12, a red light signal, a green light signal and a blue light signal are respectively taken out. As described above, according to the embodiment of the present invention, RGB signals are output in parallel, which is advantageous in terms of signal processing.
Moreover, it is suitable for speeding up.
〈発明の効果〉
以上のように本発明によれば、カラー画像を色分解して
光電変換し、色分解信号を並列に取出すことができるた
め、高速走査が可能であり信号処理も非常に容易に行な
うことができる。更に、分解能を下げることなく素子形
成が可能であり、素子形成自体も非常に容易で、極めて
低コスト・小型の密着型カラー画像読取り素子を得るこ
とができる。<Effects of the Invention> As described above, according to the present invention, a color image can be color-separated, photoelectrically converted, and color-separated signals can be extracted in parallel, so high-speed scanning is possible and signal processing is also very easy. can be done. Furthermore, the element can be formed without lowering the resolution, the element itself is very easy to form, and an extremely low-cost and compact contact type color image reading element can be obtained.
第１図は本発明の一実施例としての密着型カラー画像読
取り素子の概略構成を示す図、第２図は本発明に係る電
極サイズの一例を示す平面図である。
ｌ・・・基板、２・・・光導電膜、
３・・・電圧印加電極、
４・・・赤色光信号取出し電極、
５・・・緑色光信号取出し電極、
６・・・青色光信号取出し電極、
７・・・赤色透過フィルタ、８・・・緑色透過フィルタ
、９・・・青色透過フィルタ１
１０・・・赤色光信号出力端子、
１１・・・緑色光信号出力端子、
１２・・・青色光信号出力端子、
１３・・・走査回路、
１４・・・アナログスイッチ、
１５・・・電源。FIG. 1 is a diagram showing a schematic configuration of a contact type color image reading element as an embodiment of the present invention, and FIG. 2 is a plan view showing an example of the electrode size according to the present invention. 1... Substrate, 2... Photoconductive film, 3... Voltage application electrode, 4... Red light signal extraction electrode, 5... Green light signal extraction electrode, 6... Blue light signal extraction Electrode, 7... Red transmission filter, 8... Green transmission filter, 9... Blue transmission filter 1 10... Red light signal output terminal, 11... Green light signal output terminal, 12... Blue light signal output terminal, 13...Scanning circuit, 14...Analog switch, 15...Power supply.
Claims (1)
向配置した対向電極構造の光電変換素子アレイにおいて
、 １つの電圧印加電極に対し該電圧印加電極の３方向に光
信号出力取出し電極を配設して３つの光電変換素子を形
成し、各々の光電変換素子に原画からの光を３原色の光
に分離する色フィルタ要素を装着し、 上記電圧印加電極の３方向に配設した光信号出力取出し
電極より色分解信号を並列に取り出す ようになしたことを特徴とする密着型カラー画像読取り
素子。 ２、前記受光素子アレイ方向に隣り合った光電変換素子
は、信号出力取出し電極を互いに共有するように成した
ことを特徴とする特許請求の範囲第１項記載の密着型カ
ラー画像読取り素子。[Claims] 1. In a photoelectric conversion element array having a facing electrode structure in which a voltage application electrode and an output extraction electrode are arranged facing each other on a photoconductive film, light is transmitted to one voltage application electrode in three directions of the voltage application electrode. Signal output extraction electrodes are arranged to form three photoelectric conversion elements, and each photoelectric conversion element is equipped with a color filter element that separates light from the original image into light of three primary colors. 1. A close-contact color image reading element, characterized in that color separation signals are extracted in parallel from optical signal output extraction electrodes arranged in the . 2. The contact type color image reading device according to claim 1, wherein the photoelectric conversion devices adjacent in the direction of the light receiving device array share a signal output extraction electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59268906A JPS61144870A (en) | 1984-12-19 | 1984-12-19 | Contact-type picture read-out element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59268906A JPS61144870A (en) | 1984-12-19 | 1984-12-19 | Contact-type picture read-out element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61144870A true JPS61144870A (en) | 1986-07-02 |
Family
ID=17464909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59268906A Pending JPS61144870A (en) | 1984-12-19 | 1984-12-19 | Contact-type picture read-out element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61144870A (en) |
-
1984
- 1984-12-19 JP JP59268906A patent/JPS61144870A/en active Pending
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