JPH02208634A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To improve the economy and reliability by arraying plural kinds of terminals which differ in specification as electrode terminals for connections with an external circuit in plural arrays parallel to the sides of a substrate by specifications. CONSTITUTION:Upper transparent electrodes and lower transparent electrodes are connected to external lower lead-out connection terminals 3 in the liquid crystal display element, which is connected to the external circuit through the external lower lead-out connection terminals 3. The external lower lead-out terminals 3 are formed of transparent conductive films where no orienting film is formed and have a terminal pitch (a) part 4 and a terminal pitch (b) part 5. For example, the terminal pitch (a) part 4 is used for a connection with the external circuit by zebra rubber and the terminal pitch (b) part 5 is used to a connection with the external circuit by thermocompression bonding. The terminal pitch of the terminal pitch (b) part 5 is standardized for plural kinds of liquid crystal display elements and used for contact inspection and wire breaking inspection for internal quality control and the terminal pitch (a) part 4 is used for a connection with the external circuit in actual use. Consequently, the high reliability is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to the case where there are multiple specifications that have the same display content but differ only in terms of electrodes for connection to an external circuit. The present invention relates to a liquid crystal display element that can be handled by an element.

[Prior Art] Conventionally, even if the specifications for a single display content are the same for a liquid crystal display element, if the specifications for the electrodes for connection with an external circuit are different, the
We have responded by designing and manufacturing dedicated liquid crystal display elements (such as Japanese Utility Model Publication No. 55-50707).

However, doing so is uneconomical when the production number or quantity of liquid crystal display elements with specific specifications is small.

Also, when performing contact and disconnection inspections from external connection terminals,
As a result, the conductive film may be damaged.1
Quality control problems also arose.

[Problems to be Solved by the Invention] The present invention solves the conventional problems as described above, and has the same specifications for display contents, but only the electrodes for connection with external circuits (quality at the time of manufacture). The purpose of the present invention is to provide a liquid crystal display element that can be used by simply preparing one type of element in cases where there are multiple different specifications for (including inspection for control) only. .

C Means for Solving the Problem] In order to achieve the above object, in the present invention, at least one of the glass substrates disposed facing each other with the liquid crystal sandwiched between them is made to protrude outward from the liquid crystal sealing part.

In a liquid crystal display element in which electrode terminals for connection to an external circuit are arranged along the sides of the electrode for supplying voltage to a liquid crystal display electrode made of a transparent conductive film inside the cell, the electrode terminal for connection to the external circuit is arranged. It was decided to arrange a plurality of types of wafers with different specifications such as shape, size, pitch, etc. in a plurality of rows parallel to the sides of the board for each specification.

[Function] If the above-mentioned measures are taken, a terminal row of a certain specification can be used for connection with an external circuit through so-called zebra rubber, and another terminal row can be used for connection with another external circuit by thermocompression bonding. Alternatively, the outermost terminal row can be unified for multiple products to ensure high reliability by using it for contact inspection and disconnection inspection for quality control, and during actual use, it can be used for the above-mentioned quality control inspection. The intact inner terminal row that was not used can also be used for connection to an external circuit6.Of course, it is possible to use multiple types of liquid crystal display elements that have the same display specifications but differ only in the connection terminal specifications for the external circuit. When the production quantity of each type is not very large, the present invention can narrow down the production types to only one type and improve production efficiency.

[Embodiment] FIG. 1 is an enlarged plan view of an external connection terminal portion according to an embodiment of the present invention. The example liquid crystal display element has an upper substrate 1 and a lower substrate 2.
The upper transparent electrode and the lower transparent electrode formed on the opposing surfaces of these substrates are connected inside the device to the external lower drawer connection terminal 3 shown in FIG. It is connected to an external circuit via an external lower drawer connection terminal 3.

In this embodiment, the external lower drawer connection terminal 3 is formed of a transparent conductive film on which no alignment film is formed, and has a terminal pitch of 8 parts 4 and a terminal pitch of 5 parts 5.
The terminal pitch 8 section 4 is used for connection to an external circuit by zebra rubber, and the terminal pitch 5 section 5 is used for connection to an external circuit by thermocompression bonding.

In addition, the terminal pitch of 5 parts 5 is standardized for multiple types of liquid crystal display elements, and is used for contact inspection and disconnection inspection for internal quality control, and the terminal pitch of 8 parts 4 is used in actual use. Used for connection with external circuits. In this way, when even the external lead-out connection terminal is formed with a transparent conductive film, the terminal for quality control inspection is provided outside the terminal for actual use, so it can be easily inspected for one product. Even if the transparent conductive film that is the terminal is slightly damaged, high reliability can be achieved because the unused and undamaged terminals from the inner terminal row can be used to connect to the external circuit during actual use. It will be done.

[Effects of the Invention] As explained above, according to the present invention, by providing a plurality of terminal rows, economical efficiency and reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is an enlarged plan view of an external drawer connection terminal portion according to an embodiment of the present invention. 1... Upper board, 2... Lower board, output connection terminal,
4...Terminal pitch 8 parts, pitch 5 parts. 3... External 5... Terminal

Claims (1)

[Claims] 1. Protruding at least one side of the glass substrates facing each other with the liquid crystal sandwiched between them to the outside of the liquid crystal sealing part;
In a liquid crystal display element in which electrode terminals for connection to an external circuit are arranged along the sides to supply voltage to transparent electrodes for liquid crystal display, the shape and dimensions of the electrode terminal for connection to the external circuit are arranged. A liquid crystal display device characterized in that a plurality of types of devices having different specifications such as pitch, etc. are arranged in a plurality of rows parallel to a side of a substrate according to each specification.