KR950010663B1 - Liquid crystal display device - Google Patents

Abstract

a signal input unit, a segment electrode drive integrated circuit, a common electrode drive integrated circuit, a liquid crystal; a chrome conduction layer; an integrated circuit electrode; an upper grass substrate; a lower grass substrate; and a vacuum evaporation conduction layer formed between the chrome conduction layer and an integrated circuit electrode of the segment electrode drive integrated circuit and between the chrome conduction layer and an integrated circuit electrode of the common electrode drive integrated circuit, for electrically connecting the chrome conduction layer and the integrated circuit electrode of the segment electrode drive integrated circuit and connecting the chrome conduction layer and the integrated circuit electrode of the common electrode drive integrated circuit, respectively.

Description

LCD Display

1 is a front view of a liquid crystal display according to an embodiment of the present invention.

2 is a sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

4 is a perspective view of a mask used for manufacturing a liquid crystal display device according to an embodiment of the present invention.

5 is a cross-sectional view of a liquid crystal display device according to the prior art.

* Explanation of symbols for main parts of the drawings

1: Signal introduction means (SIGNAL SOURCE) 3: Segment electrode driving integrated circuit

5: segment electrode 7: common electrode driving integrated circuit

9 common electrode 11 liquid crystal

13: chromium (Cr) conductive layer 15: integrated circuit electrode

17: deposited conductive layer 19: upper glass substrate

21: lower glass substrate 23: alignment material

31: mask

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CHP ON GLASS liquid crystal display device in which an integrated circuit for driving a liquid crystal is integrally provided with a glass substrate on a glass substrate.

In the conventional liquid crystal display device, as shown in FIG. 5, in connecting the segment electrode (ITO) 71 and the integrated circuit electrode 75 of the segment electrode driving integrated circuit 73, aluminum (Al), which is a conductive material, is used. Or bonding using the wire (WIRE) 77 made of Au or gold (Au) to interconnect the segment electrode (ITO) 71 and the integrated circuit electrode 75 of the segment electrode driving integrated circuit 73 with each other. .

By the way, the bonding structure using the wire 77 is to press the silicone rubber when the silicon rubber is put on the segment electrode 17, the integrated circuit electrode 75 and the wire 77 to insulate the wire after wire bonding. As a result, the wires 77 are crushed to short-circuit or disconnect the wires 77 and 77 or the wires 77 fall from the segment electrode 71 or the integrated circuit electrode 75. Therefore, a lot of defects in the product, there was a problem that consumes a lot of time and money for the correction.

In FIG. 5, reference numeral 81 is a common electrode, 83 is a liquid crystal, 85 is a spacer, 87 is a sealing material, and 89 is a bottom glass. A substrate 91 is an upper glass substrate, 93 is a connection wiring for transmitting an operation signal from a main computer to the segment drive integrated circuit 73, and 95 is an alignment material. And, 97 is an aluminum conductive layer formed at the end of the segment electrode 71 is formed to help the adhesion of the segment electrode 71 and the wire 77.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a COG liquid crystal display device which can reduce the manufacturing time of the product and reduce the manufacturing cost of the product. It is.

In order to achieve the above object, a color liquid crystal display according to the present invention comprises a signal introduction means for inputting an image signal from a main computer, and a segment for driving the segment electrode by receiving an image signal from the main computer through the signal introduction means. An electrode driving integrated circuit, a common electrode driving integrated circuit driving a common electrode (COMMON electrode) by receiving an image signal from the main computer through the signal introduction means, and electrically connected to the segment electrode and the common electrode to display an image; A liquid crystal to be expressed, a chromium conductive layer applied to one end of the segment electrode and the common electrode, an integrated circuit electrode connected to the segment electrode driving integrated circuit and the common electrode driving integrated circuit, and the segment electrode driving integration An image overlying the circuit and the liquid crystal and the common electrode driving integrated circuit A liquid crystal display device comprising a glass substrate, the signal introducing means, a segment electrode driving integrated circuit, a common electrode driving integrated circuit, and a lower glass substrate for mounting the liquid crystal portion on a surface thereof, wherein the chromium conductive layer and the segment electrode driving integrated circuit are provided. Between the integrated circuit electrode of the circuit and the integrated circuit electrode of the chromium conductive layer and the common electrode driving integrated circuit; an integrated circuit electrode of the chrome conductive layer and the segment electrode driving integrated circuit; and the chromium conductive layer and the common electrode driving integrated circuit. A deposition conductive layer is formed which electrically connects the integrated circuit electrodes of the circuit with each other.

Hereinafter, embodiments of the present invention will be described in detail based on the illustrated drawings.

1 is a front view of a liquid crystal display according to an exemplary embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A of FIG. 1, and FIG. 3 is a sectional view taken along the line B-B of FIG.

In FIG. 1, reference numeral 1 denotes a signal introduction means (SIGNAL SOURCE) through which an image signal is input from the main computer, and reference numeral 3 denotes a main computer (not shown) via the signal introduction means 1, SIGNAL SOURCE. Segment electrode driving integrated circuit (SEGMENT IC) for receiving the image signal from the input voltage to the segment electrode (5), (7) is an image signal from the main computer through the signal introduction means (1, SIGNAL SOURCE) Is a common electrode driving integrated circuit for receiving a voltage and applying a voltage to the common electrode 9.

In the same figure, reference numeral 11 denotes a liquid crystal that is electrically connected to the segment electrode 5 and the common electrode 9 to represent an image. On the surface of the lower glass substrate 21 on one side of the common electrode 9, an ITO layer 12 for electrically connecting the common electrode 9 to the common electrode driving integrated circuit 7 is formed. A conductive paste 14 is provided between the ITO layer 12 and the common electrode 9 to electrically connect the ITO layer 12 and the common electrode 9. The conductive paste 14 is made of silver (Au).

In addition, reference numeral 13 denotes a chromium (Cr) conductive layer applied to one end of the segment electrode 5 and the ITO layer 12, and reference numeral 15 denotes the segment electrode driving integrated circuit 3 and the An integrated circuit electrode transfers an operation signal output from the common electrode driving integrated circuit 7 to the segment electrode 5 and the common electrode 9.

2 and 3, reference numeral 17 denotes between the chromium conductive layer 13 and the segment electrode driving integrated circuit 3 and the integrated circuit electrode 15 of the common electrode driving integrated circuit 7. Is deposited on the chromium (Cr) conductive layer 13 and the segment electrode driving integrated circuit 3 and the integrated circuit electrode 15 of the common electrode driving integrated circuit 7 electrically connected to each other as a deposition conductive layer. The deposition conductive layer 17 is made of aluminum (Al), which is a conductive metal. 19 is an upper glass substrate which is overlaid on the segment electrode driving integrated circuit 3 and the liquid crystal 11 and the common electrode driving integrated circuit 7, and 21 denotes the signal introducing means ( 1), the segment electrode driving integrated circuit 3, the common electrode driving integrated circuit 7, the liquid crystal 11 part, and the lower glass substrate on which the deposition conductive layer 17 is mounted.

1 to 3, reference numeral 23 denotes an alignment member that applies an alignment force to the liquid crystal 11, reference numeral 25 denotes a sealing member provided around the liquid crystal 11, and reference numeral 27 denotes an external material. An aluminum pad (Al PAD) connected to the main computer of the wiring line 29 is a spacer for maintaining a gap between the upper common electrode 9 and the lower segment electrode 5.

Hereinafter, the operation and effect of the liquid crystal display according to the exemplary embodiment of the present invention configured as described above will be described.

First, when an image signal is input from a main computer (signal source) not shown in the signal introduction means 1, the signal introduction means 1 is connected to the segment electrode driving integrated circuit through the connection wiring 27 and the integrated circuit electrode 15. 3) and an image signal to the common electrode driving integrated circuit 7, and the segment electrode driving integrated circuit 3 is segmented through the integrated circuit electrode 15, the deposition conductive layer 17, and the chromium conductive layer 13. At the same time, the common electrode driving integrated circuit 7 transmits an operation signal to the electrode 5, and the common electrode driving integrated circuit 7 includes an integrated circuit electrode 15, a deposition conductive layer 17, a chromium conductive layer 13, an ITO layer 12, and a conductive paste. The operation signal is transmitted to the common electrode 9 through 14.

As such, when an operation signal is applied to the segment electrode 5 and the common electrode 9, an electric potential difference is formed between the segment electrode 5 and the common electrode 9 so that an image appears in the liquid crystal 11.

Next, a method of forming the deposition conductive layer 17 will be described.

4 is a perspective view of a mask 31 used in the manufacture of a liquid crystal display according to an embodiment of the present invention.

The mask 31 is composed of a plastic resin part 33, which is easy to mold, and an encapsulation resin part 35, which serves to prevent diffusion. The encapsulation resin part 35 is configured to move the mask 31 on the segment electrode driving integrated circuit 3, the common electrode driving integrated circuit 7, the segment electrode 5, and the ITO layer 12. When pressed on the chromium conductive layer 13 of the deposited conductive metal is to be configured to prevent the diffusion to other than the deposition site. The mask 31 has a plurality of through-holes 37 formed horizontally and vertically in the number corresponding to the number of the segment electrode 5 and the common electrode 9. (13) and the integrated circuit electrode 15 are formed at a suitable position so as to correspond to the site of interconnection.

As shown in FIG. 1, the mask 31 formed as described above is formed on the lower glass substrate 21, the segment electrode driving integrated circuit 3, the common electrode driving integrated circuit 7, the common electrode 9, With the segment electrode 5 and the chromium conductive layer 13 installed, they are stacked on the lower glass substrate 21 as shown in imaginary lines in FIGS. 2 and 3 and are made of aluminum (Al), gold (Au), When a conductive metal made of copper (Cu) or the like is deposited by sputtering in a vacuum state, the deposition conductive layer 17 described above is integrated with the chromium conductive layer 3 as shown in FIGS. 2 and 3. It is formed between the circuit electrodes 15. In this way, since the deposition conductive layer 17 is formed between the chromium conductive layer 13 and the integrated circuit electrode 15 by deposition, the deposition conductive layer 17 can be formed without any external pressure. Even when external pressure is applied to the deposition conductive layer 17, the deposition conductive layer 17 is formed to be stacked with a considerable thickness and width, so that the deposition conductive layer 17 is separated from the chromium conductive layer 13 and the integrated circuit electrode 15. There is no fear of leaving.

As described above, according to the liquid crystal display according to the present invention, a mask is used to deposit a chromium conductive layer formed at the end of the segment electrode and the common electrode, and between the segment electrode driving integrated circuit and the integrated circuit electrode of the common electrode driving integrated circuit. By forming the conductive layer, the deposited conductive layer can be formed without any external pressure, and the deposited conductive layer has a considerable thickness and width even if silicon rubber or the like is applied on the upper side thereof to insulate the deposited conductive layer. It is laminated and formed to have the effect that there is no fear of disconnection due to the pressure on the upper side, and the deposition conductive layer is less likely to be separated from the chromium conductive layer or the integrated circuit electrode, so there is little defect in manufacturing the product and the manufacturing time This has a very good effect of shortening and reducing product manufacturing cost.

Claims (3)

Signal introduction means for inputting an image signal from a main computer, a segment electrode driving integrated circuit for receiving an image signal from the main computer through the signal introduction means, and driving a segment electrode; and an image from the main computer through the signal introduction means. A common electrode driving integrated circuit which receives a signal to drive a common electrode, a liquid crystal that is electrically connected to the segment electrode and the common electrode to represent an image, and is applied to one end of the segment electrode and the common electrode A chromium conductive layer, an integrated circuit electrode connected to the segment electrode driving integrated circuit and the common electrode driving integrated circuit, and an upper glass covering the segment electrode driving integrated circuit and the liquid crystal and the common electrode driving integrated circuit. A substrate, the signal introduction means, a segment electrode driving integrated circuit, and a common electrode A liquid crystal display device comprising a dynamic integrated circuit and a lower glass substrate for mounting the liquid crystal portion on a surface, the liquid crystal display device comprising: an integrated circuit electrode of the chromium conductive layer and the segment electrode driving integrated circuit; and a chromium conductive layer and a common electrode driving integrated circuit. An integrated circuit electrode of the chromium conductive layer and the segment electrode driving integrated circuit and a deposition conductive layer electrically connecting the chromium conductive layer and the integrated circuit electrode of the common electrode driving integrated circuit to each other are formed between the integrated circuit electrodes of the integrated circuit electrodes. Liquid crystal display device characterized in that. The liquid crystal display device according to claim 1, wherein the deposition conductive layer is formed by sputtering in a vacuum state by using a mask having a through hole formed therein to deposit the chromium conductive layer and the integrated circuit electrode part. The liquid crystal display device according to claim 1 or 2, wherein the deposition conductive layer is made of aluminum which is a conductive metal.