JPS60132228A - Display and input device - Google Patents

Abstract

PURPOSE:To make a display easily visible by placing two transparent substrates through a spacer on a display part, providing a transparent electrode in the orthogonal direction on the inside surface, and providing a non-glare layer on the surface of an input part, in a display and input device. CONSTITUTION:Glass and transparent plastic films 17, 18 are fixed through a spacer, transparent electrodes 19, 20 are formed as a thin film in each orthogonal direction on the opposed surface of the glass 17 and 18, by which an input part is constituted, a display part is constituted of a liquid crystal display body 5 under the input part, a liquid crystal substance 9 is inserted and held by electrode substrates 8, 12 of glass, etc., polarizing plates 7, 10 are placed in the upper and lower sides, and a reflecting plate 11 is provided. A transparent or translucent non-glare layer 21 is formed on the surface of the input part so that the display becomes easily visible. The transparent electrodes 19, 20 constitute X and Y matrixes, a signal of a key encoder 14 is detected by a key decoder 15 by means of a finger-push, a contact coordinate is inputted to a microprocessor 16, and display information is fed back.

Description

[Detailed Description of the Invention] Technical Field> The present invention relates to liquid crystal displays, EL, CRT displays, etc.
FIG. 6 is a sectional view of a conventional transmissive input device, in which 6 is a transmissive input device, 1 and 4 are acrylic plates, and 2 and 3 are on the transparent substrate. <Prior art> In conventional input devices, an acrylic plate was used, but when such a position is mounted on a display device such as a CRT, the surface of the input section reflects and lights up. There were drawbacks such as light and sunlight reflecting off and making it difficult to see the display.

<Objective> An object of the present invention is to eliminate such drawbacks and provide a display/input device in which the display below the input section is easy to see.

<Embodiment> FIG. 1 is a sectional view of a display and input device based on the present invention.
7.18 is a transparent plastic film such as glass, polyester, acrylic, or the like, and preferably has a thickness of about 100 μm to 200 μm in order to ensure a light input pressure and to prevent distortion of the display surface due to surface waviness. 19, 20 are transparent electrodes made of indium oxide, iIJ tin oxide, thin film gold, etc., which are formed into thin films by vapor deposition, sputtering, etc. on the opposing substrate surfaces. It is organized under the department. The liquid crystal display body 5 is a twisted nematic type in which a liquid crystal substance 9 is sandwiched between electrode substrates 8 and 12 made of glass or plastic plates, and polarizing plates 7 and 10 are arranged on the top and bottom, and is equipped with a reflecting plate 11. The transparent electrodes 19 and 20 have an x-Y matrix configuration as shown in 13 in FIG. The coordinates of the detected contacts are recognized and the coordinate information is input to the microprocessor 16 and fed back to display information or processing circuitry.

A non-glare layer 21 is provided in the input section of the display/input device of the present invention.
The 0/non-glare layer 21 on which is formed is a transparent or semi-transparent layer, and is configured so that the display can be clearly seen. The non-glare layer 21 is preferably made of transparent or semi-transparent resin, but even if it is made of opaque resin, the layer thickness may be reduced to make it transparent or semi-transparent. The surface of the non-glare layer is moderately roughened and scatters light. Such a layer may be formed by screen printing, gravure printing, offset printing, spraying, dipping, or the like. The resin constituting the menglare layer is, for example, the following (A) and (Bl (in the formula, R' is a hydrocarbon group having 1 to 2 carbon atoms, a vinyl group, a methacryloxy group,
an organic group having a thiol group or an epoxy group, R2 is a hydrocarbon group having 1 to 4 carbon atoms, R3 is a hydrocarbon group having 1 to 5 carbon atoms, an alfoxylalkyl group or a hydrogen atom, and U is 0.
, i, 2, and poison represents o, i. ) At least one silicon compound represented by:

(B) Consists of a resin whose main raw material is Coro-Rdarunrica with a particle size of 1 to 100 millimeters.

Ingredient (A) is methyltrimethquinone.

Ethyltriethoxysilane, phenyltrimethoxysilane, dimethyldimethoxysilane, vinyltriethoxysilane, vinyltriacetoxysilane, γmethacryloxypropyltrimethoxysilane, γthiolpropyltriethoxysilane, β-(!1.4epoxycyclohexyl)ethyl There are trimetquin silane, tetramethquin silane, etc.

These may be used alone or in combination of two or more.

In addition, these are tested in the presence or absence of an organic solvent such as alcohol,
It is preferable to use it after hydrolysis by adding an acid, and it may be used alone after hydrolysis and then mixed with colloidal silica of component (B), or after mixing with component (B) and then hydrolyzed.

Component (B) colloidal silica with a particle size of 1 to 100 millimeters is a commercially available colloidal solution in which inorganic silicic acid fine particles of up to a polymer are dispersed in an organic solvent such as water or alcohol. It is.

The main raw materials may be components (A), l (B) (components are soft), and the film mainly composed of buttons is a strong cured film with a three-dimensional network structure, and the cured film has excellent surface hardness and wear resistance. .

Provides moisture resistance, heat resistance, chemical resistance, and weather resistance. Also, adjust the viscosity of the prepared treatment liquid or change the solvent (A).

By using a semi-soluble solvent for component (B), the outermost surface of the resulting cured film can be made into a finely uneven surface.

It should be noted that the membrane containing components (A) and (B) as main raw materials can be constructed more effectively by using a catalyst, for example.

As a catalyst, amines such as n-butylamine, guanidine, glycidi, aluminum acetylacetate,
Metal chelate compounds such as titanyl acetylacetonate, organic metal salts such as sodium acetate, zinc naphthenate, tin octylate, and hydrochloric acid.

Phosphoric acid, para-toluenesulfonic acid, etc., 5nay2゜h
Lewis acids such as p, ap, 8,5 bap, etc., perchloric acid compounds, etc. Use of these catalysts is suitable for curing silanol or epoxy groups. Among these, perchloric acid compounds, which are a type of latent catalyst, have excellent properties.

In particular, ammonium perchlorate, magnesium perchlorate, zirconium perchlorate, etc. were good. The above catalyst combines components (A) and (B) into a strong cured film with a three-dimensional network structure, and the cured film has excellent surface hardness, abrasion resistance, moisture resistance, heat resistance, chemical resistance, and weather resistance. give. Also, adjust the viscosity of the prepared processing liquid, but do not dissolve it.

By using the (A) + (]1+) component as a semi-soluble solvent, the outermost surface of the obtained cured film can be made into a finely uneven surface.

Incidentally, the cured layer may be formed from component (A) l (B) and (I)) a polyfunctional cellulose compound. Even if a cured layer is formed from components (A), (B) and component (D) using the above catalyst, it will result in a strong cured film with a three-dimensional network structure, and the cured film will have excellent surface hardness, abrasion resistance, and moisture resistance. , provides heat resistance, chemical resistance, and weather resistance. Furthermore, by adjusting the viscosity of the prepared treatment liquid or by using a solvent that is semi-soluble for the components (A) and (B), the outermost surface of the resulting cured film can be made to have a finely uneven surface.

Although the explanation is a little complicated, the polyfunctional cellulose compound of component (D) will be explained next. Polyfunctional cellulose compounds include hydroxyl groups and carboxyl groups.

Epoxy group, acrylic group, vinyl group, anno group.

-A cellulose compound having a large number of functional groups such as an isocyanate group and an amine 7 group in its molecule, and hydroxypropyl cellulose resin, hydroxyethyl cellulose resin, etc. were particularly good. Since it allows adjustment of the degree of viscosity increase,
By adding the cellulose compound, the viscosity of the treatment liquid can be adjusted to an appropriate viscosity (in the case of film formation by off-cent printing method, the viscosity of the treatment liquid can be adjusted to several 0.
jC.

~1000. The surface of the cured film that can be obtained can be made extremely easily to have fine irregularities by adjusting the temperature to P or by selecting a solvent (selecting a solvent in which the cellulose compound is semi-soluble).

Input devices coated with a non-grain cured film made mainly of the above ingredients will not scratch or scratch even if the surface of the input device is pressed or rubbed by finger pressure or cleaning, and the display surface will last for a long time. Keep it easy to see. In addition, even if dirt adheres, the non-glare surface makes the dirt less noticeable, eliminating the need to frequently clean the display surface during operation, which further improves the visibility of the display surface over a long period of time. It helps to do. Furthermore, since the cured film has excellent chemical resistance, water resistance, and heat resistance, it is possible to use not only water but also warm water, alcohol, and various cleaning solutions when cleaning.

In addition, the mixing amounts of each component used in the present invention are component (B), (solid content calculated as S i O2), component (D) in a range of 0 to 100% by weight. Component (C) is preferably used within the range of 0.01 to 50% of the total solid content. As the solvent, alcohols, ketones, cellosolves, carboxylic acids, and the like may be used alone or in combination as component (A).

The semi-soluble solvent for CB) can be easily prepared by adding a halogenated solvent or the like to the above solvent, and the semi-soluble solvent for component (D) is preferably isopropyl alcohol. Further, if necessary, a surfactant, an antistatic agent, an ultraviolet absorber, an antioxidant, etc. can be added to the treatment liquid to improve the appearance and quality of the cured film.

Hereinafter, the present invention will be described in detail based on Examples, but the present invention is not limited thereto.

Example 1 Polyester film (125 μm thickness) ti-11
After immersing in Nα0Haq at a constant 0ffl for 10 minutes, washing with water, and drying, the following treatment solution was applied to one side of the film using an offset printing method, and baked at 140°C for 1 hour to form a cured film with a 2 μm thick non-glare surface. Formed.

<Treatment liquid> A solution consisting of 108 parts by weight of γ-grindquin propyltrimethine silane, 212 parts by weight of isopropanol-dispersed colloid (IPA sol manufactured by Catalysts & Chemicals Co., Ltd., solid formation 60%) and 100 parts by weight of isobutanol solution. , 52 parts by weight of 0.05N hydrochloric acid aqueous solution was added to perform hydrolysis, and the mixture was further refluxed at 60°C for 4 hours to reduce the liquid viscosity to 50'.
, eps, and then 4 parts by weight of ammonium perchlorate was added and stirred to prepare a uniform treatment liquid.

A To film of 400 χ was formed on the non-menu-glare surface of the above film by low-temperature, high-speed sputtering, and a desired patterning was performed to form the upper substrate of the input device. On the other hand, a desired T'O pattern was formed on a glass substrate to serve as a lower substrate, and both substrates were bonded together using an epoxy adhesive to produce an input device. Next, we will show the performance evaluation method.

(Appearance) Repeat the action of touching the surface of the input device with your finger several dozen times, and visually compare the difficulty of viewing the display before and after the action.

(Abrasion resistance) A load of j Ky- was applied to ILMIt's #0000 steel wool, and the degree of scratching was measured when it was worn back and forth 10 times, with glass as A1 and acrylic resin as E'.
Evaluation was made on a scale of 0.

(Moisture resistance) After being left at 60° C. and 90% for 500 hours, the appearance was checked and the abrasion resistance was evaluated.

(Heat resistance) After being left at 80° C. for 50 hours, appearance was checked and abrasion resistance was evaluated.

(Chemical resistance) Appearance was checked after immersion in ethanol and 1% NffOH aqueous solution for 1 hour, respectively.C (Weather resistance) Appearance was checked after 500 hours of ultraviolet irradiation.

(Optical properties) Light transmittance (λ=sso*i) and surface gloss were measured.

In addition, except for the appearance, only the upper substrate was evaluated.

Furthermore, an input device manufactured using a polyester film without forming a cured film was evaluated as Comparative Example 1.

The evaluation results are shown in Table 1.

Example 2゜Polyether 7-on film (10μ thick),
After washing and drying, the following treatment liquid was applied to one side of the film using an offset printing method, and baked at 140'0 for 1 hour.
A cured film having a non-glare surface with a thickness of 15 μm was formed. Thereafter, an input device was manufactured using the same steps as in Example 1.

<Treatment liquid> 50 parts of methyltrimethoxysilane, 8 parts by weight of γ-glycidoxypropylmethyljethoxy 922, 1 pA sol 2
12] 48 parts by weight of a 0.05 N hydrochloric acid aqueous solution was added to a solution consisting of ii parts, 400 parts of isopropanol solution, and 5 parts by weight of hydroxypropyl cellulose resin to perform hydrolysis, and this solution was aged at 15°C for 1 day. Thereafter, 5 parts by weight of magnesium perchlorate and several doses of a frofentrol agent (Nippon Unicar Co., Ltd. 1,7604) were added to prepare a treatment solution.

An input device manufactured using a polyether sal 7-on film that does not form a cured film was evaluated as Comparative Example 2. The evaluation results are shown in Table 1.

The display unit of the display/input device of the present invention may be a liquid crystal display, CRT1 plasma display, R:C, (electroluminescence), etc., and the input unit is configured as shown in the embodiment. By arranging the input section in front of the display section, a display/input device is constructed, which becomes a very useful man-machine interface device in which information displayed on the display section can be entered by directly touching the front surface of the display section. In addition to the finger, pens, sign pens, ballpoint pens, pencils, light pens, sticks, etc. may also be used as the means for the sword. Furthermore, it is preferable that the display section is constructed of a transmissive type.

Effect> Since the display/input device of the present invention configured as described above has a non-glare layer formed on the surface of the input section, if the display/input device is configured with the input section formed on the display section, the input section will be The display will not become difficult to see because the surface will not reflect fluorescent lights or sunlight and will be visible to the naked eye. Furthermore, when inputting by pressing with a finger, the display under the input section does not become difficult to see due to fingerprints adhering to the input section. in this way,
The display/input device of the present invention provides a display with excellent display quality even though the input section is configured on the display section.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the transparent input device of the present invention. FIG. 2 is a functional configuration diagram of the transparent input device of the present invention. FIG. 3 is a sectional view of a conventional transmissive input device arranged on a liquid crystal display. 1. Transparent substrate (upper substrate) 2. Lower substrate electrode 4 Lower substrate electrode 4 Transparent substrate (lower substrate) 5. Liquid crystal display section 6 Transmissive input device section 7 Upper polarizing plate 8. ... Upper substrate for liquid crystal display 9 - Liquid crystal substance 10 ... Lower polarizing plate 11 - Reflector plate 12 ... Lower substrate for liquid crystal display 15 - Electrode 14 - Key encoder 15 ... Key decoder 16 ... Microprocessor - 17, 18...Transparent substrate 19.20...Transparent electrode 21...Surface hardening treatment layer and above Applicant Suwa Seikosha Co., Ltd. Epson Co., Ltd. Figure 2 Figure 3

Claims (1)

[Claims] Two nearly transparent substrates facing each other with a spacer in between,
An input section having one or more substantially transparent electrodes disposed on opposing surfaces of the two substrates, and a non-glare layer provided on the outer surface of at least one of the two substrates is mounted on the display section. A display/input device characterized by being provided with.