JPH11305736A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a frame narrow by reducing the wiring space from a signal electrode driving IC and a scanning electrode driving IC to signal electrodes and scanning electrodes on a glass substrate. SOLUTION: At least one of the signal electrode driving IC 16 and scanning electrode driving IC 17 on the glass substrate 1 is arranged in a parallelogrammic shape including a diamond except a square and a rectangle. Consequently, each of wiring patterns from the signal electrode driving IC 16 and scanning electrode driving IC 17 to the signal electrodes 4 and scanning electrodes 5 have only one bending point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used as a display device of an image device such as a television monitor and a car navigation system or an information device such as a computer.

[0002]

2. Description of the Related Art In recent years, due to advances in microfabrication technology, material technology, and high-density packaging technology, the ratio of liquid crystal display devices in AV, OA, on-vehicle, and information communication has been rapidly expanding. As a key device replacing the cathode ray tube (CRT), the electronics industry has attracted attention.

Under such circumstances, a thin liquid crystal display device is required.
The demand for lighter weight and lower cost is becoming more and more important, and each electrode driving semiconductor element (hereinafter, semiconductor element is abbreviated as IC and each electrode is driven on a glass substrate on which an active element is formed, for driving a signal electrode and a scanning electrode, respectively). A COG (chip-on-glass) mounting method, in which the thickness in the thickness direction is further developed by directly mounting a driving IC (noted like a driving IC), is becoming common.

However, in the COG mounting method as described above, since the width of the frame is determined by the space for wiring from each electrode driving IC to each electrode, when a narrow frame is realized, this wiring space is reduced. The challenge is how to reduce it.

Hereinafter, a conventional liquid crystal display device will be described with reference to the drawings. As shown in FIG. 3, a conventional liquid crystal display device includes a liquid crystal panel 9 in which signal electrodes 4 and scanning electrodes 5 are formed in a matrix on a glass substrate 1, and a signal electrode driving IC 6 for driving the signal electrodes 4. And the scanning electrode 5
Electrode driving IC 7 for driving the pixel electrode and signal electrode driving IC 6
A signal wiring group 2 for transmitting a signal to the scanning electrode driving IC 7, a power wiring group 3 for supplying power to the signal electrode driving IC 6 and the scanning electrode driving IC 7, and a flexible wiring board 8
Are installed and configured respectively.

The signal electrode driving IC 6, the scanning electrode driving IC 7, the flexible wiring board 8, the signal wiring group 2 and the power supply wiring group 3 are arranged and connected to the periphery of the glass substrate 1. The flexible wiring board 8 supplies drive signals such as video signals and control signals to the signal electrode drive IC 6 and the scan electrode drive IC 7 via the signal wire group 2 and power to the signal electrode drive IC 6 and the scan electrode drive IC 7, respectively. .

The signal supplied to the signal electrode driving IC 6 is
Signal processing is performed inside the signal electrode driving IC 6 to drive the signal electrode 4, and the signal supplied to the scanning electrode driving IC 7 is signal processed inside the scanning electrode driving IC 7 to drive the scanning electrode 5. A character or an image is displayed on the liquid crystal panel 9.

Since the liquid crystal display device itself does not have a power supply unit, the power supplied from the external power supply is supplied to the signal electrode driving IC 6 and the scanning electrode through the power supply wiring group 3 via the flexible wiring board 8. It is supplied to the drive IC 7 respectively.

FIG. 4 is an enlarged plan view of the wiring pattern portion 10 of the signal electrode 4 and the signal electrode driving IC 6 shown in FIG. 3. The conventional signal electrode driving IC 6 has a rectangular shape. When the wiring pattern P1 is drawn from the signal electrode drive IC 6 to the signal electrode 4 because the space between the pads of the IC is narrower than the space of And is again bent at an arbitrary angle in the direction opposite to the previous direction, and is input to the signal electrode 4 in a direction perpendicular to the signal electrode drive IC 6.

Although FIG. 4 shows only the signal electrode 4 side, it goes without saying that the same applies to the scanning electrode 5 side. As described above, in the conventional liquid crystal display device, when the pattern P1 is drawn from the signal electrode drive IC 6 to the signal electrode 4, two break points exist in the middle, and a wiring space for that is required.

[0011]

However, in the above-mentioned conventional liquid crystal display device, the wiring pattern P1 drawn from each of the electrode drive ICs of the signal electrode drive IC 6 and the scan electrode drive IC 7 includes the signal electrode 4 and the signal electrode 4. Since there are two broken points having an arbitrary angle in the course of wiring to each electrode of the scanning electrode 5, a wiring space by those wiring patterns P1 becomes large, and a problem that a narrower frame is hindered. Had a point.

The present invention solves the above-mentioned conventional problems, and reduces the wiring space from the signal electrode driving IC and the scanning electrode driving IC on the glass substrate to the signal electrode and the scanning electrode to reduce the frame width. Provided is a liquid crystal display device that can be realized.

[0013]

In order to solve the above-mentioned problems, a liquid crystal display device according to the present invention is characterized in that at least one of a semiconductor element for driving a signal electrode and a semiconductor element for driving a scanning electrode on a glass substrate has a diamond shape. Are arranged in parallelograms other than squares and rectangles, so that each wiring pattern from the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element to the signal electrode and the scanning electrode has only one break point. It is characterized by doing.

As described above, the wiring space from the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element on the glass substrate to the signal electrode and the scanning electrode can be reduced, and the frame can be narrowed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal display device according to a first aspect of the present invention drives a liquid crystal panel in which signal electrodes and scanning electrodes are formed in a matrix on a glass substrate, and drives the signal electrodes of the liquid crystal panel. A semiconductor element for driving a scanning electrode of the liquid crystal panel, a semiconductor element for driving a scanning electrode of the liquid crystal panel, a signal-side power supply wiring group for supplying power to the semiconductor element for driving the signal electrode, A liquid crystal display device comprising: a scan-side power supply line group for supplying power to a semiconductor element; and a signal line drive semiconductor element and a signal line group for transmitting a signal to the scan electrode drive semiconductor element. Semiconductor element and the scan electrode driving semiconductor element are arranged such that at least one of them is a parallelogram other than a square and a rectangle including a diamond. Configured to have.

According to this structure, at least one of the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element on the glass substrate is arranged in a parallelogram other than a square or a rectangle including diamonds. It is possible to make only one break point in each wiring pattern from the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element to the signal electrode and the scanning electrode.

Hereinafter, a liquid crystal display device according to an embodiment of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a plan view of the liquid crystal display device of the present embodiment, and FIG. 2 is an enlarged plan view of the vicinity of the signal electrode driving IC in the same embodiment.

As shown in FIG. 1, the liquid crystal display of this embodiment has a signal electrode 4 and a scanning electrode 5 on a glass substrate 1.
A liquid crystal panel 9 formed in a matrix, a signal electrode driving IC 16 for driving the signal electrodes 4, and a scanning electrode 5
Electrode driving IC 17 for driving the display, and signal electrode driving IC
16 and a power supply wiring group 3 for supplying power to the signal electrode drive IC 16 and the scan electrode drive IC 17, and further shown in FIG. As described above, the shape of the signal electrode driving IC 16 is a rhombus, which is one of the parallelograms.

The configuration will be described above. As shown in FIG. 2, for example, in a wiring pattern P2 from the signal electrode driving IC 16 to the signal electrode 4, the signal electrode driving IC
The wiring pattern P2 first drawn vertically (90 °) from 16 is bent at an arbitrary angle, and is input to the signal electrode 4 vertically (90 °) as it is.

As described above, by arranging at least one of the signal electrode driving IC 16 and the scanning electrode driving IC 17 on the glass substrate 1 as a parallelogram other than a square or a rectangle including diamonds, the signal electrodes are driven. Each wiring pattern P2 from the drive IC 16 and the scan electrode drive IC 17 to the signal electrode 4 and the scan electrode 5 can have only one break point.

As a result, the wiring space from the signal electrode driving IC 16 and the scanning electrode driving IC 17 on the glass substrate 1 to the signal electrode 4 and the scanning electrode 5 can be reduced, and the frame can be narrowed.

In FIG. 2, as in the case of the conventional example,
Although only the signal electrode 4 side has been described using the signal electrode drive IC 16, it goes without saying that the same applies to the scan electrode 5 side.

The configuration shown in the present embodiment is merely an example, and the liquid crystal panel 9 may be an active matrix type liquid crystal panel, a simple matrix type liquid crystal panel, or another type of liquid crystal display device using a matrix type liquid crystal panel. Needless to say, there may be.

Further, in the liquid crystal display device shown in the present embodiment, since the shape of each of the electrode driving ICs 16 and 17 is a parallelogram, there is an advantage that dicing can be easily performed at the time of manufacturing the IC.

[0025]

As described above, according to the present invention, at least one of the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element on the glass substrate has a shape other than a square including a rhombus and a parallelogram other than a rectangle. With this arrangement, each wiring pattern from the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element to the signal electrode and the scanning electrode can have only one break point.

Therefore, the wiring space from the signal electrode driving semiconductor element and the scanning electrode driving semiconductor element on the glass substrate to the signal electrode and the scanning electrode can be reduced, and the frame can be narrowed.

[Brief description of the drawings]

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

FIG. 2 is an enlarged plan view near a signal electrode driving IC according to the embodiment;

FIG. 3 is a plan view of a conventional liquid crystal display device.

FIG. 4 is an enlarged plan view of the vicinity of a signal electrode driving IC in the conventional example.

[Description of Signs] 1 Glass substrate 2 Signal wiring group 3 Power wiring group 4 Signal electrode 5 Scanning electrode 8 Flexible wiring board 9 Liquid crystal panel 16 Signal electrode drive IC 17 Scan electrode drive IC

Claims (1)

[Claims] A liquid crystal panel having signal electrodes and scanning electrodes formed in a matrix on a glass substrate, a signal electrode driving semiconductor element for driving the signal electrodes of the liquid crystal panel, and a scanning electrode of the liquid crystal panel. A scan electrode driving semiconductor element to be driven; a signal side power supply line group for supplying power to the signal electrode drive semiconductor element; a scan side power supply line group for supplying power to the scan electrode drive semiconductor element; In a liquid crystal display device provided with an electrode driving semiconductor element and a signal wiring group for transmitting a signal to the scan electrode driving semiconductor element, the signal electrode driving semiconductor element and the scan electrode driving semiconductor element are at least one of them. A liquid crystal display device, wherein one of the shapes is a parallelogram other than a square including a rhombus and a rectangle and arranged.