JPS61145581A - Liquid crystal display panel unit - 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 Field of Industrial Application The present invention relates to a liquid crystal display panel device in which a driving integrated circuit element (LSI) is mounted on the periphery.

BACKGROUND OF THE INVENTION In recent years, liquid crystal display panels as video display elements have made remarkable advances in the industrial world, and in particular, the technology for mounting LSIs that perform matrix drive on liquid crystal display panels has made great progress.

A conventional liquid crystal display panel device will be described below with reference to the drawings. 4 and 6 show an example of a conventional liquid crystal display panel device.

In Figures 4 and 6, 1 is a counter glass in which the liquid crystal material is sealed, 2 is a counter glass in which the liquid crystal material is sealed between the counter glass 1, and an IJ sock-shaped thin film transistor is formed on its inner surface. The TPT array substrate has transparent electrodes drawn out from its left, right, top and bottom ends so that electrical signals can be applied from the outside, and 5 is a driving LSI.
A film carrier for mounting (Y, ~Y6 drivers) and (x, ~x4 drivers) on the motherboard 17 and TFT array board 2, 6 to 11 send signals to the signal electrodes of the TFT array board 2 in order from the left side. This is an LSI for matrix driving the liquid crystal display panel, and 6 is Y.
Driver, Ryoga Y2 Driver,...11
is Y6 driver, 12 to 15 are TFT array board 2
This is an LSI that sends a scanning signal to the scanning electrode No. 110 from the top to perform matrix driving. 12 is the X driver, 13 is the x2 driver, 14 is the x3 driver, 16 is the x4 driver, and 17 is the film carrier 5.
A motherboard board 18 to 21 is used to fix the Y, ~Y6 and X, ~x4 drivers mounted on the TFT array board 2, and to electrically couple each XY driver to send signals. It is a conductive pattern for feeding the Y, to Y6 drivers and is electrically and mechanically connected via the film carrier 6.

22 to 24 are conductive patterns for sending scanning signals into the TFT array substrate 2, and are electrically connected to the respective X, to x4 drivers via the film carrier 6.

In the above configuration, the liquid crystal display panel device has a fourth
As is clear from the figure, each of x1 to x4. Y, to Y6 drivers are arranged, and a motherboard 1A is arranged around them to make electrical and mechanical connections, and an image is created on the surface by driving the matrix of a liquid crystal display panel. In order to mount the driving LSI, the motherboard substrate 17 is required to have a much larger outer diameter than the area of the opposing glass 10 which is the display section.

Problems to be Solved by the Invention However, with the above configuration, the peripheral circuit board for mounting the driving LSI in the effective image display section becomes extremely large, which poses a major hindrance to the miniaturization of the product. , the product value will drop. Therefore, in recent years, there has been a strong desire to develop a technology for miniaturizing drive peripheral circuits.

In view of the above-mentioned problems, the present invention provides a liquid crystal display panel device in which the mounting of peripheral circuits for driving a liquid crystal display can be made extremely small and compact.

Means for Solving the Problems In order to achieve this object, the liquid crystal display panel device of the present invention has a structure in which the scanning electrodes of the liquid crystal panel are drawn out in the vertical direction using conductive patterns on the TFT array substrate. , the driving LSIs are arranged and mounted in the vertical direction on the same surface with a liquid crystal display panel in between, and the mounting arrangement of the scanning electrode driving LSIs is moved from the horizontal direction to the vertical direction.

Effect With this configuration, the mounting arrangement of the matrix drive LSI can be changed from the conventional vertical and horizontal positions across the liquid crystal panel to only the vertical direction. This makes it possible to shorten the diameter dimension.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a plan view of a liquid crystal display panel device according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a facing glass, which has the same structure as the conventional example shown in FIG. 4. Reference numeral 2 denotes a TPT array substrate, and in order to mount the scanning electrode driving LSI on the upper and lower sides of the liquid crystal display panel, conductive patterns are drawn out to the upper and lower ends of the substrate.

3 is a motherboard substrate (A), which electrically connects and fixes the upper film carriers of the liquid crystal display panel;
Reference numeral 4 designates a substrate for electrically connecting and fixing film carriers disposed under each of the liquid crystal display panels facing the motherboard, 6 a film carrier, and 8 to 11 drivers Y1 to Y6. 12 to 16 are x1 to x4 drivers,
An LSI driver sends a scanning signal to the scanning electrodes arranged at both the upper and lower ends of the TPT array substrate 2, and 6 is connected to the motherboard (A) 3 and the motherboard @) 4 arranged vertically across the liquid crystal display panel. A connecting flexible printed board 18 to 21 is a conductive pattern for electrically connecting between the XY drivers and sending signal pulses to each XY driver. These are the same configuration as shown in FIG.

22 to 24 are conductive patterns for sending scanning signals into the TFT array substrate 2, and each x1 to x4 driver and film carrier 5 are arranged at both upper and lower ends of the liquid crystal display panel.
electrically connected via.

FIG. 2 is a cross-sectional view of FIG. 1 seen from the left side, and FIG. 3 is a cross-sectional view of FIG. 1 seen from the bottom. It is electrically connected and bent downward to shorten the horizontal dimension of the liquid crystal panel unit by utilizing the flexible effect.

The operation of the liquid crystal display panel configured as described above will be described below. First, facing glass 1 and TF
The liquid crystal display panel main body, which is composed of a T array substrate 2 and a liquid crystal material sealed therebetween, has all signal electrodes led out by conductive patterns 18 to 21 above and below it from Y, to Y6 drivers 8 to 11. A signal is applied. Furthermore, a conductive pattern 22 is formed from the left and right ends of the panel body.
By sequentially applying scanning signals from the X and -x4 drivers 12 to 15 to the scanning electrodes pulled out at the upper and lower ends in -24, a desired image is created on the effective image display section of the liquid crystal panel main body.

According to this embodiment as described above, the outer diameter of the liquid crystal display panel device including the X driver for scanning electrodes arranged and mounted in the left-right direction of the panel body described in the conventional example is By placing and mounting the X-driver for scanning electrodes of the present invention shown in FIG. The effect will increase.

In addition, in this embodiment, the flexible print 16 connecting the motherboards (A) 3 and (B) 4 was bent at a right angle after mounting, but this bending angle is not limited to the right angle direction, but the bending process is done at that part. Good too. The present invention may be applied to either a transmissive type or a reflective type liquid crystal display panel device.

Effects of the Invention As described above, according to the present invention, the L for driving a liquid crystal display panel
By mounting and fixing the SI on the same surface of the panel in the vertical direction via a film carrier, the outer diameter dimension of the liquid crystal display panel unit in the left and right direction can be shortened, and this has a considerable practical effect. .

[Brief explanation of the drawing]

1 is a plan view of a liquid crystal display panel device of the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is a downward sectional view thereof, FIG. 4 is a plan view of a conventional liquid crystal display panel device, and FIG. The figure is a side sectional view thereof. 3...Motherboard board (A), 4...
- Motherboard substrate (B)% 5...Film carrier, 6-15...Drive LSI. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
figure

Claims (1)

[Claims] It incorporates a liquid crystal display panel and an integrated circuit element for driving it, and a conductive pattern for a scanning electrode of the liquid crystal panel is provided on the same surface of the liquid crystal display panel and extends in the vertical direction, and A liquid crystal display panel device characterized in that the integrated circuit element is electrically coupled and mechanically fixed at a position via a film carrier and a printed circuit board.