JPS60221789A - Optical display unit fixing structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display fixing structure in which an optical display element such as a liquid crystal is sandwiched between a pair of substrates, such as a transparent glass substrate or a plastic substrate.

Conventionally, optical display elements such as liquid crystal e! Optical display devices using display bodies, mainly wristwatches, R-clocks, calculators, etc., mainly have 7-segment displays. However, as these products become more multifunctional and the uses of display bodies expand, dot matrix displays and the like allow a wide variety of displays, including single numbers, and a display method with a good appearance is strongly desired.

The object of the present invention is to
To provide a simple fixing structure for a display body that can display a wide variety of characters, such as characters, and display a good appearance.

Another object of the present invention is to provide a fixing structure that reliably connects the display body to the circuit wiring board and secures the display body without increasing the number of parts.

A description will be given below using a liquid crystal, which is one type of optical display element, as an example.

FIG. 1 is a plan view of a conventional liquid crystal display, and FIG. 2 is a sectional view thereof. 1 is a transparent glass substrate, 2 is a transparent electrode constituting a segment electrode and a common electrode, and 3 is a sealing member for determining the thickness of the liquid crystal layer and for sealing the liquid crystal. 4 is a so-called P-type nematic liquid crystal with positive dielectric anisotropy, and has a vertically twisted structure of approximately 90°. 5 is a pair of polarizing plates whose polarization directions are approximately 9 degrees apart from each other.
It is 0°. Reference numeral 6 denotes a conductive member that provides vertical continuity of the common electrode. As shown in the figure, one character is made up of seven segment electrodes, and by applying a voltage between the signal electrode and the common electrode, it is possible to display numbers and the like. However, with such a 7-segment display, there are only a few types of display, and the use of the display is limited, or the display function amplifier,
For example, there were restrictions on displaying one character of the alphabet.

Figure 3 is a diagram of the electrode pattern displayed in a dot matrix at 6f.
f. FIG. 4 is a plan view of the dot matrix display. The number of electrodes has been reduced to make the explanation easier to understand. FIG. 3a is a pattern diagram of the upper transparent electrode 7, FIG. 3 is a small turn diagram of the lower transparent electrode 8, and FIG. It is a diagram. By using such a dot matrix display, it is possible to display numbers, alphabets, katakana, hiragana, kanji, etc. with high density, and the appearance is good by increasing the number of display pixels for one character stroke. It enables high-quality display, and also leads to expanded uses as a display body.However, the problem here is how to connect the upper and lower transparent electrodes to the external connection circuit. In this case, it is necessary to take out the items from both sides. One way to take out the electrodes from the top and bottom transparent glass substrates is to use soldering, but stripping and soldering the lead wires takes a long time and is very costly. was. Also, short circuits between interconnecting patterns and solder joints are weak and unreliable. The present invention aims to improve these drawbacks and will be described in detail below with reference to the drawings.

FIG. 5 is a plan view showing an embodiment of the display fixing structure according to the present invention, FIG. 6 is a sectional view of one side, and FIG. 7 is a sectional view of the other side. 9 is upper transparent glass, substrate, 10
11 is a lower transparent glass substrate, and 11 is a pair of polarizing plates, which constitute a display body. The display body is positioned by the panel frame 12 with respect to the notch of the circuit wiring board 13, and the circuit wiring board 13 is reinforced with the press 15, which is a fixing part plate, through the lead rubber 14, which is a type of connector. It is sandwiched between reinforcing members 16 and fixed with screws 17.

This establishes conduction between the upper transparent electrode 7 and the turn of the circuit wiring board 13.The other lead rubber 18, whose perspective view is shown in FIG. It is a zeterra-like lead rubber, and there is another insulating part 2 at the bottom.
I have 1t. The lead rubber 18 is guided by the pusher 15, and one side is sandwiched between the lower transparent glass substrate 10 and the pusher 15,
The other side is sandwiched between the circuit wiring board 15 and the stamping 15, and the insulating portion 21 is assembled so as to be in contact with the stamping 15. At this time, by integrating the lead rubber 18 and the pusher 15 with an adhesive or the like, assembly becomes easy. Which lead rubber 18 provides electrical continuity between the lower transparent electrode 8 and the pattern on the circuit wiring board 13. If the transparent glass substrate is thick, the display body is pressed 15
, the reinforcing members 16 are fixed so as to be in contact with each other via the circuit wiring board 13, thereby improving drop resistance and impact resistance. By adopting such a fixing structure, it is possible to securely fix the dot matrix display body and ensure conduction. Compared to the conventional case, the increase in the number of barrel parts is only increased by the amount of buried rubber 18, and the cost increase can be kept to a minimum. When the fixed structure is used, the panel frame positions the display body with respect to the circuit wiring board pattern by the upper transparent glass substrate facing the circuit wiring board pattern, and it is better to guide the lead rubber with the panel frame. Can be positioned accurately. For this reason, it is preferable to bring the substrate surface with a large number of transparent electrodes to the electrode surface side facing the pattern of the circuit board, and conduction can be ensured more reliably. For the same reason, it is better to bring the surface of the substrate with the smaller pinch between the transparent electrodes to the surface facing the pattern of the circuit wiring board, and more reliable conduction can be achieved.

FIG. 9 is a diagram showing another embodiment of the lead rubber according to the present invention, and FIGS. 10 and 11 are sectional views of a fixing structure using the lead rubber. The lead rubber 22 has an insulating part 23 on the upper part of the L-shaped zebra-like lead rubber part, and is guided by a pusher 24 as shown in FIG.
It is fixed via a wire plate 25 and a transparent glass substrate 26. At this time, the pressing 24 of the lead rubber 22, the lower transparent glass substrate 26
By determining the dimensions of the lead rubber 22 so that the compression ratio between the two and the compression ratio between the presser 24 and the circuit wiring board 25 is the same, conduction can be more assured. As shown in FIG. 11, the lead rubber can be made common by placing the lead rubber 22 horizontally in the panel frame 27 and fixing it with a display body tube pusher 24 or the like in order to establish conduction between the other electrodes. By using a common lead rubber in this way, the cost can be reduced.

As detailed above, one connector of the present invention is fixed to a circuit wiring board via a transparent glass substrate, and the other connector is held and fixed between the press and the transparent glass substrate and between the press and the circuit wiring board. By doing so, it is possible to fix the dot matrix optical display and to establish conduction with a highly reliable connection circuit without increasing the number of parts, and by using the above structure, a high quality, multifunctional, and versatile optical display device can be achieved. can be provided.

Note that although the present invention has been explained using a display body in which a liquid crystal is placed between a pair of transparent glass substrates, the present invention has been explained using a display body in which a liquid crystal is placed between a pair of transparent glass substrates.
There are 3 layers and 3 transparent glass substrates.

Even if there are four sheets, the effect of the present invention remains unchanged.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional liquid crystal display. FIG. 2 is a lateral cross-sectional view of FIG. 1. FIG. 3 is a diagram showing an electrode pattern and pixels of a dot matrix display. FIG. 4 is a plan view of the matrix display shown in FIG. 3. FIG. 5 is a plan view showing an embodiment of the display body fixing structure according to the present invention. FIG. 6 is a cross-sectional view of one side of FIG. FIG. 7 is a sectional view of the other side of FIG. 5. FIG. 8 is a perspective view showing an embodiment of the lead rubber according to the present invention. FIG. 9 is a perspective view showing another embodiment of the lead rubber according to the present invention. 1019 is a sectional view of the fixing structure using the lead rubber of FIG. 9; Figure 11 is the 9th
FIG. 3 is a sectional view of the other fixing structure using the lead rubber shown in the figure. DESCRIPTION OF SYMBOLS 1... Transparent glass substrate 2... Transparent electrode 6... Seal member 4... Liquid crystal 5.11... Pair of polarizing plates 6... Conductive member 7... Upper transparent electrode 8... - Lower transparent electrode 9 Upper transparent glass substrate 10 Lower transparent glass substrate 12 Panel frame 13 Circuit wiring board 1
4.18... Lead rubber 15... Pressing 16...
Reinforcing member 19...Conducting part 20.21...Insulating part 22...
lead rubber

Claims (1)

[Claims] A display body comprising an optical display element arranged between one or more pairs of display body substrates, a circuit wiring board, a plurality of connectors for electrically connecting electrodes of the display body and the circuit wiring board, and a top surface of the display body. In an optical display device comprising a fixing member for fixing with a press, at least two opposing display substrates each have a plurality of transparent electrodes on the surface facing the optical display element, and each display body having the transparent electrode an end of the substrate is arranged to protrude from the display body, at least one zebra-shaped lead frame is sandwiched between the circuit wiring board and one end of the circuit wiring board and the display body substrate; One end of one or more zebra-shaped lead frames is sandwiched between the fixing member and the other end of the display substrate, and the other end is sandwiched between the fixing member and the circuit wiring board. - Characteristic optical display device fixing structure.