JPH05273548A - Liquid crystal display device and electronic equipment - Google Patents

Abstract

PURPOSE:To provide a liquid crystal display element which has such unprecedented outside appearance that a character is black though a background is colored and where contrast is improved by using a color reflector in a liquid crystal display device, whose display is recognized without backlight even in the dark place by using light accumulating pigment having a property that the pigment absorbs light and emits the light in the dark place for the color reflector, and where the character looks in bold relief by faint fluorescence and an electronic equipment where the liquid crystal display element is mounted. CONSTITUTION:A pair of substrates 1 is stuck to be opposed through a sealing material 5, and an upper polarizing plate 7 and a lower polarizing plate 8 are disposed on the outsides of the substrates 1. Furthermore, the reflector 9 where a color coating layer 10 is formed is disposed on the downside of the plate 8. The color coating layer 10 is formed by coating the pigment and resin containing dyestuff.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and electronic equipment equipped with the liquid crystal display device.

[0002]

2. Description of the Related Art Conventionally, when a liquid crystal display device is colored, a color liquid crystal display device has been used which comprises sandwiching a liquid crystal display element between color polarizing plates or performing color printing on the liquid crystal display element.

[0003]

However, when a color polarizing plate is used in the liquid crystal display device, the characters are colored and the degree of polarization is low and the contrast is poor. Even for color printing, it was not used as a background color only for fixed display.

Therefore, the present invention solves such a problem, and its purpose is to produce an unprecedented appearance with black characters in the background color, and to provide a variety of appearances in combination with the decorative board color of electronic equipment. Will be possible. Another advantage of the present invention is to provide a display appearance that has never been seen in a liquid crystal display device in which characters can be recognized even in a dark place by using a phosphorescent pigment for a reflecting plate so that characters appear to be raised due to weak fluorescence of the background color.

[0005]

In a liquid crystal display device of the present invention, a pair of flexible substrates on which an alignment film for aligning liquid crystal molecules is formed are opposed to each other by a sealing material at regular intervals via a spacer. A liquid crystal display device comprising a liquid crystal display element which is adhered and has a liquid crystal sealed in the gap, sandwiched between upper and lower polarizing plates, and a reflecting plate is used under the lower polarizing plate. Is used.

In the electronic device of the present invention, a pair of flexible substrates having an alignment film for aligning liquid crystal molecules are faced to each other with a sealant at a constant interval through a spacer, and the liquid crystal is filled in the gap. What is claimed is: 1. A liquid crystal display device comprising: a liquid crystal display element having a sealant sandwiched between upper and lower polarization plates; and a reflection plate under the lower polarization plate, wherein the reflection plate is a color reflection plate. It is equipped with a feature.

[0007]

【Example】

[Embodiment 1] FIG. 1 is a sectional view of a liquid crystal display device of this embodiment. Here, 1 is an upper substrate and a lower substrate, both of which were made of PET (polyethylene terephthalate) film having a thickness of 100 μm. A well-known glass substrate may be used. 2 is a transparent electrode made of an ITO (indium tin oxide) film, 3 is an alignment film, 4 is a spacer, 5 is a sealing material, 6 is a liquid crystal, 7 is an upper polarizing plate, 8 is a lower polarizing plate, and 9 is a reflecting plate. Is.

In the method of manufacturing the present liquid crystal display device, the transparent electrode 2 is formed on the PET film by the low temperature sputtering method, and a predetermined pattern is formed by the photolithography method. An alignment film 3 is formed thereon by offset printing and baked to form a film. Next, the alignment film 3 is rubbed with a cloth in a predetermined direction to perform an alignment treatment, and then an epoxy adhesive having a predetermined gap material as a sealing material is screen-printed on one of the substrates, and the space is spread on the substrate. The substrate was sprayed by a wet spray method and the two substrates were adhered to each other. The spraying density of the spacer was 150 co / mm ² . Next, the liquid crystal 6 was filled by a vacuum injection method, and the injection part was sealed with an epoxy adhesive. This liquid crystal cell is sandwiched between an upper polarizing plate 7 and a lower polarizing plate 8, and a reflecting plate 9 provided with a color coating layer 10 on the lower polarizing plate is installed. The color coating layer is formed by coating a part or the entire surface of a rolled aluminum foil having a thickness of 15 μm with a resin containing a pigment and a dye by gravure printing and adhering a PET film (50 μm) thereto. As the pigment, for example, "Sericor EG fluorescent ink 104 or 139" manufactured by Teikoku Ink Mfg. Co., Ltd. can be used.

The liquid crystal display device manufactured with the above-described structure has an unprecedented appearance that the characters are black even though the background color is color, and the contrast can be improved.

[Embodiment 2] A phosphorescent pigment having the same structure as that of Embodiment 1, which has a property that the pigment absorbs light in the reflection plate 9 having a color coating layer and emits light in a dark place (for example, Empire By using "Sericor EG phosphorescent ink GSS" manufactured by Ink Mfg. Co., Ltd., the characters were seen to be highlighted due to the weak fluorescence of the background color, and the backlight was not necessary, making it possible to recognize in the dark. The emission wavelength of the phosphorescent pigment used here is preferably in the visible light range of 380 nm to 700 nm.

[Embodiment 3] A liquid crystal display device manufactured by the same structure as that of Embodiment 1 is combined with a color reflector of a similar color to that of a decorative plate of an electronic device to be mounted to further enhance the versatility of appearance. did it.

[Embodiment 4] A liquid crystal display device having the same structure as that of Embodiment 1 has a new appearance by combining a color of a decorative plate of an electronic device mounted with a color reflector of a complementary color system. I was able to produce a fashionable sense of luxury.

[Embodiment 5] When a liquid crystal display device having the same structure as that of Embodiment 1 is mounted on a card-type electronic notebook, a fashionable and high-class feeling can be produced with an unprecedented appearance.

[Embodiment 6] When a liquid crystal display device having the same structure as that of Embodiment 1 is mounted on a card-type pager, the color tone of the exterior is good and a fashionable sense of quality can be produced.

[Embodiment 7] In the same structure as in Embodiment 1, the color is coated on the lower substrate 1 without using the reflector 9 having the color coating layer. The appearance was the same as when the reflector 9 was color-coated.

[Embodiment 8] In the same structure as in Embodiment 1, the lower polarizing plate 8 was color-coated without using the reflection plate 9 provided with the color coating layer. The appearance was the same as when the plate 9 was color-coated.

[0017]

As described above, according to the present invention, the reflective plate is coated with a resin containing a color pigment or a dye, so that the background color is a color black character and a fashionable liquid crystal with an unprecedented appearance. It is possible to provide a display device, and it is possible to provide a liquid crystal display device having an improved display appearance by using a phosphorescent pigment as the pigment and an electronic device equipped with the liquid crystal display device.

[Brief description of drawings]

FIG. 1 is a diagram showing a liquid crystal display device of the present invention.

[Explanation of symbols]

 1. Substrate 2. Transparent electrode 3. Alignment film 4. Spacer 5. Sealing material 6. Liquid crystal 7. Upper polarizing plate 8. Lower polarizing plate 9. Reflector 10. Color coating layer

Claims (6)

[Claims] 1. A liquid crystal in which a pair of flexible substrates on which an alignment film for aligning liquid crystal molecules is formed are opposed and adhered to each other with a sealing material at a constant interval through a spacer, and the liquid crystal is sealed in the space. What is claimed is: 1. A liquid crystal display device comprising a display element sandwiched between upper and lower polarization plates, and a reflection plate under the lower polarization plate, wherein a color reflection plate is used as the reflection plate. 2. The liquid crystal display device according to claim 1, wherein the color reflection plate has a metal reflection surface coated with a resin containing a pigment or a dye on a part or the entire surface thereof. 3. The liquid crystal display device according to claim 2, wherein a fluorescent pigment and a luminous pigment are used as the pigment. 4. The liquid crystal display device according to claim 1, wherein a color reflector having a color similar to the color of a decorative plate of an electronic device on which the liquid crystal display device is mounted is used. 5. A liquid crystal display device according to claim 1, wherein a color reflection plate of a color complementary to the color of the decorative plate of an electronic device mounting said liquid crystal display device is used. 6. An electronic apparatus comprising the liquid crystal display device according to claim 1, 2 or 3 or 4 or 5.