JP2005242423A - Liquid crystal touch panel structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal touch panel structure for easily performing disassembly/reassembly by simple configurations, and for satisfactorily realizing dust preventing performance in a product state. <P>SOLUTION: This liquid crystal touch panel structure is constituted of a frame-shaped liquid crystal cover in which crystal is stored and a window frame-shaped touch panel main body fixed to the front face of this liquid crystal cover, the touch panel main body is only partially attached to the front face of the liquid crystal cover, and a spacer for dust prevention adhering to the touch panel main body is interposed in the residual non-attached section. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid crystal touch panel structure.

  In in-vehicle audio equipment and communication equipment, a liquid crystal is used for a monitor portion, and a touch panel of a type that is switched by touching with a fingertip while covering the front surface of the monitor is widely used.

  As shown in FIG. 1, such a liquid crystal touch panel generally includes a sheet metal liquid crystal cover 100 having a three-dimensional frame shape and a window frame-shaped touch panel main body 103 fixed to the front surface of the liquid crystal cover 100.

  In the production assembly line, the touch panel body 103 is integrally fixed by attaching the double-sided adhesive tapes 104, 104 to the entire area (upper, lower, left and right sides) of the front surface of the liquid crystal cover 100, and attaching the touch panel body 103 thereto. It was done by pressing.

  According to this configuration, since all four sides of the touch panel body 103 are firmly fixed, dust or dirt is mixed between the liquid crystal 102 and the glass of the touch panel body 103 to cause a defect. If the touch panel body 103 is to be separated from the liquid crystal cover 100 for removal and reassembly, the touch panel body 103 cannot be easily peeled off, which is very time-consuming and time-consuming. In some cases, the touch panel body 103 may be deformed. there were.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to provide a liquid crystal that can be easily disassembled and reassembled with a simple structure and can have good dust-proof performance in a product state. It is to provide a touch panel structure.

  In order to achieve the above object, the present invention comprises a frame-shaped liquid crystal cover for storing liquid crystal and a window frame-shaped touch panel body fixed to the front surface of the liquid crystal cover, and the touch panel body is attached only partially to the front surface of the liquid crystal cover. In addition, the remaining non-sticking portion is characterized by interposing a dustproof spacer closely contacting the touch panel body.

  Since the total application area is reduced, the touch panel body can be easily separated and reassembled if a defect occurs due to dirt or dust mixed between the liquid crystal and the touch panel glass during assembly. Can be done easily and quickly. Even if there is a non-adhesive part between the touch panel main body and the liquid crystal cover, the dust-proof spacer fills the gap in the product state, so that dust and dust do not enter between the liquid crystal and the touch panel main body, and good dust-proof performance can be exhibited.

Preferably, a double-sided adhesive tape is disposed on the two sides of the front surface of the liquid crystal cover, and a dustproof spacer having a fibrous base material is disposed on the other two sides. The fibrous material is represented by felt or non-woven fabric.
According to this, the touch panel body can be fixed with the necessary fixing force by the adhesive force of the double-sided double-sided adhesive tape, and the liquid crystal cover and the touch panel body can be fixed with an appropriate cushioning property due to the dust-proof spacer being fibrous. The remaining area that is not bonded can be in a good closed state, and dust and dust can be well collected to prevent entry between the liquid crystal cover and the touch panel body.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
2 and 3 show an embodiment of the liquid crystal touch panel structure according to the present invention. Reference numeral 1 denotes a liquid crystal cover made of sheet metal, which extends rearward to each outer edge portion of the rectangular window frame portion 10. The supporting portion 11 to be bent is integrally formed.
Reference numeral 2 denotes a liquid crystal panel, which is accommodated in the support portion 11 and is exposed to the window frame portion 10 except for the peripheral edge portion.
Reference numeral 3 denotes a touch panel body made of a metal plate, in which a transparent member 31 such as glass is fitted in a rectangular window frame 30.

  Reference numeral 4 denotes a partial double-sided tape attached to the front surface of the window frame portion 10 of the liquid crystal cover 1 by a sufficient area to exert the required fixing force. In this example, only the two short vertical sides on the left and right sides are used. It is stuck.

Reference numeral 5 denotes a belt-like dustproof spacer attached to the front region of the window frame portion 10 excluding the partial double-sided tape 4, in this example, two upper and lower horizontal sides.
The dustproof spacer 5 has a fibrous surface base material 5a and a thin backup material 5b made of metal or synthetic resin, and the back adhesive surface of the backup material 5b is located above and below the liquid crystal cover window frame 10. Affixed on the two sides. It may replace with this and may be affixed on the two horizontal sides of the upper and lower back surfaces of the touch panel body window frame 20.

  The fibrous material of the surface base material 5a preferably has an appropriate contractibility. Specifically, it may be felt, but non-woven fabric is preferred from the viewpoint of cost and thickness. It is preferable that the dust-proof spacer 5 is entirely equal to or slightly thicker than the partial double-sided tape 4.

The operation of the present invention will be described. When assembling the liquid crystal touch panel, dustproof spacers 5 and 5 are pasted on the upper and lower sides of the liquid crystal cover window frame 10 as shown in FIG. A single side of the relatively thick double-sided tape 4 or 4 is attached.
In this state, the touch panel body 3 is pressed against the window frame portion 10 of the liquid crystal cover 1, and the adhesive is fixed with the partial double-sided tapes 4 and 4.

  If it is found in the inspection after this operation that the touch panel body 3 and the liquid crystal 2 are defective and dust and dirt are enclosed, the touch panel body 3 is peeled off and disassembled. Since the touch panel body 3 is only attached to the liquid crystal cover 1 within a range in which the necessary fixing force can be obtained by the partial double-sided tapes 4 and 4, the touch panel body 3 can be peeled and disassembled very easily.

  In the state of a regular product that is not defective, there is no gap in the thickness direction between the two sides of the touch panel body 3 and the liquid crystal cover 1 with the partial double-sided tapes 4 and 4, and the area that is not bonded with the double-sided tape. Then, the fibrous surface base material 5a of the dustproof spacer 5 is sandwiched between the touch panel body 3 and the liquid crystal cover 1 and is in close contact so that no gap is formed. Therefore, dust and dust do not enter the liquid crystal surface through the touch panel body 3 and the liquid crystal cover 1, and the dustproof performance does not deteriorate.

  The dust-proof spacer 5 may be a surface base material 5a provided only with a back adhesive layer. However, when the back-up material 5b is provided at the back as in the embodiment, it is easy to handle because of its rigidity. Yes, it can be easily and reliably applied to the touch panel body 3 without crumpling. Moreover, it can function also as a bending prevention material of the liquid crystal cover 1.

It is a disassembled perspective view of the conventional liquid crystal touch panel structure. 1 is an exploded perspective view of a liquid crystal touch panel structure according to the present invention. (a) is sectional drawing of an assembly state, (b) is the elements on larger scale.

Explanation of symbols

1 LCD cover 1
2 LCD panel 3 Touch panel body 4 Double-sided adhesive tape 5 Dust-proof spacer 5
5a Fibrous surface substrate

Claims (2)

  It consists of a frame-shaped liquid crystal cover that houses the liquid crystal and a window frame-shaped touch panel body that is fixed to the front surface of the liquid crystal cover. The touch panel body is only partially attached to the front surface of the liquid crystal cover, A liquid crystal touch panel structure characterized by interposing a dustproof spacer in close contact with the touch panel body.   2. The liquid crystal touch panel structure according to claim 1, wherein a double-sided adhesive tape is provided on two sides of the front surface of the liquid crystal cover, and a dustproof spacer having a fibrous base material is provided on the other two sides. .

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