Liquid crystal cells – elements and systems – Liquid crystal system – Liquid crystal for recording or imaging on photosensitive...
Reexamination Certificate
2000-09-05
2002-10-22
Dudek, J. (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Liquid crystal for recording or imaging on photosensitive...
C349S003000
Reexamination Certificate
active
06469754
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a liquid-crystal display with a scanner, and more particularly to a liquid-crystal display with a scanner, which enables the achievement of a built-in scanner module that does not sacrifice the thinness of the liquid-crystal module.
2. Related Art
In a conventional liquid-crystal display with scanner, it was necessary to provide an LED light source for illumination of the manuscript, and an electroluminescent (EL) light source for use as a backlight for the LCD separately, thereby leading to an increase in the overall cost of the apparatus. With respect to this problem, as shown in
FIG. 13
, a scanner device which is disclosed in Japanese Unexamined Patent Publication (KOKAI) No. 3-255772, was proposed. In this scanner device, it was not necessary to provide a backlight for the display and a light source for the manuscript separately.
In the above-mentioned scanner device, as shown in
FIG. 13
, light which is emitted from the fluorescent tube
45
illuminates the reading point on the manuscript, this manuscript being read by an image sensor
47
, via a selfoc lens array
46
. Part of the scattered light from the fluorescent tube
45
is guided to the bottom part of the LCD
42
by the light-blocking member
49
, and the reflector
48
, thereby providing uniformed illumination over the entire lower surface of the LCD
42
. That is, part of the light of the fluorescent tube
45
that illuminates the surface of the manuscript
43
is reflected by the reflector
48
, and guided to the lower surface of the LCD
42
, thereby acting as a backlight. By doing this, it is possible to utilize the fluorescent tube
45
as both illumination of manuscript
43
and a backlight for the LCD
42
.
In an image scanner that reads an image on a manuscript, and particularly in a hand-held scanner of the past, LCDs were often used as the display device, and when this was a reflective type LCD, it was difficult to read on a display in dark locations, so that to make the display readable, a backlight was used. However, this increased the number of parts, and made the device uneconomical. With regard to this problem, the device as shown in
FIG. 14
was developed. This device is disclosed in Japanese Unexamined Patent Publication (KOKAI) No. 5-260252. According to the image scanner which is shown in
FIG. 14
, light from a lamp (light source)
56
is collected by a lamp holder
57
, the part of the collected light being introduced to a light guide member
59
, via a cutout (light-guiding part)
57
a, thereby illumination being made from the rear of the liquid-crystal display
60
, so that a bright display is obtained on the liquid-crystal display
60
, making the displayed image easy to view.
According to this type of image scanner
70
, a light guide
59
is provided at the bottom side of the liquid-crystal display
60
, part of the light from the light source
56
illuminating of the manuscript
71
being guided to within a light guide member
59
, so that it is possible to illuminate the liquid-crystal display
60
without providing a separate illumination light source, thereby obtaining an easy-to-view display.
Another technology of the past can be described simply as follows.
In Japanese Unexamined Patent Publication (KOKAI) No. 4-211558, there is disclosure of image information input/output device used in a facsimile apparatus or the like, and in particular an image information input/output device that enables integration of an image information reading apparatus and an image information writing apparatus. In this type of input/output device of the past, because an image information input section and output section are provided on the same substrate, there is no commonality between the drive circuitry for the light receiving elements, and the light guide means, so that the configuration is insufficient in terms of compactness, ease of manufacturing, and cost reduction. This device comprises a light-receiving element that receives light from a light source, a substrate which supports a light-emitting element that illuminates a photosensitive body, a first drive circuit for the light-receiving element, a second drive circuit for the light-emitting element, a first light-collecting fiber array that guides light of the light source, and a second light-collecting fiber array that guides the light of the light-emitting element, at least one pair of light-receiving and light-emitting elements being disposed next to one another, so that at least one of the first and second light-collecting fiber arrays or first and second drive circuits are shared.
In Japanese Unexamined Patent Publication (KOKAI) No. 5-100645, there is disclosure of an integrated external information read-in/display apparatus for displaying information that is captured by a scanner, an image input means, or an audio input means or the like, on a display device such a flat-panel display. This information processing apparatus has a configuration in which a front display part and a rear scanner part are integrated as one, thereby achieving compactness, thinness, and light weight. Scanned information from the scanner part can be displayed on the display, and in certain cases, external image information or audio information can also be displayed on the display part.
In Japanese Unexamined Patent Publication (KOKAI) No. 6-276363, there is disclosure of a manuscript read-in apparatus capable of use in such equipment as a facsimile apparatus, a copying machine, or a scanner or the like. In particular, this invention minimizes the number of components, and features a simple construction and low costs, while facilitating the adjustment procedure and facilitating work burden when implementing units. Particularly, in this manuscript read-in apparatus, the sensor array having a plurality of opto-electrical conversion elements is housed within a fluorescent display tube.
As shown in
FIG. 15
, an image sensor disclosed in Japanese Unexamined Patent Publication (KOKAI) No. 6-291935 is proposed. This image sensor comprises an LED array
101
which radiates illumination light
105
, an image sensor substrate
102
onto which is formed a sensor element
107
having a light-guiding hole
120
shown in
FIG. 2
that passes the illumination light
105
within the light-receiving surface to a manuscript
104
, and a fiber array plate (FAP)
111
formed by fibers
112
that guide incident light from one surface to the other surface, these elements being disposed in the sequence corresponding to the direction of radiation of the illumination light
105
. Illumination light
105
from the LED array
101
passes through the light-guiding hole
120
provided at the sensor element
107
, and strikes the fibers
112
, whereupon it is guided to the surface of the manuscript
104
, the signal light
106
which is reflected at the surface of the manuscript
104
being guided to the photosensitive layer
117
of the sensor element
107
by the fibers
112
, at which it is opto-electrically converted (refer to FIG.
2
and FIG.
15
).
The image sensor disclosed in Japanese Unexamined Patent Publication (KOKAI) No. 10-173861, shown in
FIG. 16
, is one in which a large number of sensor elements are arranged with the same width as the manuscript, and a contact-type color sensor elements read in the images on the manuscript in intimate contact therewith.
As shown in
FIG. 16
, this color image sensor has the following configuration. Specifically, electrodes
218
are provided on one surface of a glass substrate
215
. On the electrodes
218
, a photosensitive layer
217
, common electrode
216
, and a color filter
219
are successively laminated, these elements being protected by a protective layer
209
, thereby forming the sensor substrate
210
. The light guide
212
is adhered to the protective film
209
, with an adhesive layer
208
therebetween. On the glass substrate
215
side of the sensor substrate
210
, a color LED array light source
202
is disposed. Light from the col
Dudek J.
Hayes & Soloway P.C.
LandOfFree
Liquid-crystal display with scanner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid-crystal display with scanner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid-crystal display with scanner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2946783