JPH04147219A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To eliminate the need for providing an insulating film, etc., at the intersection part of a top-surface and a reverse-surface power source signal line and to facilitate the manufacture by connecting the top-surface and reverse- surface power source signal lines, connected to a liquid crystal circuit element on the top surface of a transparent substrate and a terminal on the reverse surface. CONSTITUTION:The through hole with an about 1 mm diameter is formed in the glass substrate 1. Then a transparent conductive film 10 is formed on both the surfaces of the substrate 1 and on the internal surface of the through hole and then patterned by etching. An Ni film 11 and an Au film 12 are provided. There is no intersection part between the top-surface power source signal line 6 connected to the liquid crystal driving circuit element 3 formed on the top surface of the substrate 1 and the reverse-surface power source signal line 8 connected to the terminal 7 formed on the reverse surface of the substrate 1, so the element can easily be manufactured without providing any insulating film, etc., between the both.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display element in which a liquid crystal driving circuit element is mounted on a transparent substrate.

[Prior art] Regarding conventional liquid crystal display elements, Japanese Patent Application Laid-Open No. 56-5036
As shown in Publication No. 8, a liquid crystal driving circuit element is mounted on a glass substrate.

In the figure, 1 is a glass substrate, 2 is a signal line formed on the surface of the glass substrate l on which a transparent conductive film is formed;
3 is a liquid crystal driving circuit element mounted on the glass substrate 1;
The liquid crystal driving circuit element 3 is connected to the signal line 2. 4
is a terminal formed on the surface of the glass substrate 1; 5 is a power/signal line formed on the surface of the glass substrate 1; the power/signal line 5 connects the terminal 4 and the liquid crystal driving circuit element 3;・
Power and signals for driving the liquid crystal driving circuit element 3 are supplied via the signal line 5 .

[Problem to be Solved by the Invention] In such a liquid crystal display element, since an intersection 5a occurs in the power/signal line 5, it is necessary to provide an insulating film or the like between the power/signal M5 at the intersection 5a. , manufacturing is troublesome.

This invention was made to solve the above-mentioned problems, and an object thereof is to provide a liquid crystal display element that is easy to manufacture.

[Means for Solving the Problem] In order to achieve this object, in the present invention, in a liquid crystal display element in which a liquid crystal driving circuit element is mounted on the surface of a transparent substrate, the liquid crystal driving circuit element is mounted on the surface of the transparent substrate. A front power supply/signal line connected to the circuit element is formed, a terminal is formed on the backside of the transparent substrate, a backside power supply/signal line connected to the terminal is formed on the backside of the transparent substrate, and the front side power supply/signal line is formed on the backside of the transparent substrate.・Provide a through hole to connect the signal line and the above-mentioned back side power supply/signal line.

[Function] In this liquid crystal display element, no intersection occurs between the front power/signal line and the back power/signal line.

[Example] FIG. 1 is a schematic diagram showing a liquid crystal display element according to the present invention, FIG. 2 is a partially detailed diagram of FIG. 1, and FIG. 3 is a sectional view taken along the line AA in FIG. 2. In the figure, reference numeral 6 denotes a surface power/signal line formed on the surface of the glass substrate l, and the surface power/signal line 6 is connected to the liquid crystal driving circuit element 3. 7 is a terminal formed on the back surface of the glass substrate 1; 8 is a back power/signal line formed on the back surface of the glass substrate 1; the back power/signal line 8 is connected to the terminal 7; 9 is a through hole that connects the front power/signal line 6 and the back power/signal line 8, )O is IT
Transparent conductive film such as ○ film, 11 is N1 film, 12 is Au film,
Transparent conductive film 10. Ni film 1] and Au film 12 provide surface power supply.
A signal line 6, a back side power supply/signal line 8, and a through hole 9 are configured.

To manufacture this liquid crystal display element, first, holes for through holes with a diameter of IM are formed in the glass substrate 1.

Next, the transparent conductive layer 10 is provided on both sides of the glass substrate 1 and on the inner surface of the through-hole by patterning by photo-etching. Next, N is applied on the transparent conductive film 10.
i1ll, and the Au film 12 is provided.

In this liquid crystal display element, since there is no intersection between the front power/signal line 6 and the back power/signal line 8, an insulating film or the like is provided between the front power/signal line 6 and the back side power/signal line 8. Since there is no need to provide one, manufacturing is easy.

In addition, in the above-mentioned Example, although the glass substrate 1 was used as a transparent substrate, other transparent substrates may be used. Also,
If a conductive film is provided on the inner surface of the through-hole hole by electroless plating, the signal line 6 on the front surface 11 and the power supply/signal line 8 on the back surface can be reliably connected through the through-hole 9. Furthermore, by filling the through holes 9 with a conductive substance, the front power/signal line 6 and the back power/signal line 8 can be reliably connected.

〔Effect of the invention〕

As explained above, in the liquid crystal display element according to the present invention, there is no intersection between the front power source/signal line and the back side power source/signal line. Since there is no need to provide an insulating film or the like on the substrate, manufacturing is easy. As described above, the effects of this invention are remarkable.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a liquid crystal display element according to the present invention, FIG. 2 is a partially detailed view of FIG. 1, FIG. 3 is a sectional view taken along line A-A in FIG. FIG. 2 is a schematic diagram showing a display element. 1.Glass substrate 3.LCD drive circuit element 6.Surface power/signal line 7.Terminal 8.Back surface power/signal line 9.Through hole 1. Figure 9.Through hole 1. Figure 2

Claims (1)

[Claims] 1. In a liquid crystal display element in which a liquid crystal driving circuit element is mounted on the surface of a transparent substrate, surface power/signal lines connected to the liquid crystal driving circuit element are formed on the surface of the transparent substrate, and A terminal is formed on the back side, a back side power/signal line connected to the terminal is formed on the back side of the transparent substrate, and a through hole is provided to connect the front side power/signal line and the back side power/signal line. A liquid crystal display element featuring: