Flat panel display and display panel device having the same

Abstract

A flat panel display having an improved impact resistance performance is provided. The flat panel display includes a front panel made up of a transparent substrate and a laminate that is fixed to the back side of the transparent substrate, and a back panel that is adhered to the front panel. The transparent substrate of the front panel has a remaining tensile stress while the laminate of the same has a remaining compressive stress.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a plasma display panel showing its general structure.

FIG. 2 is a cross section cut along the z-z line of FIG. 1.

FIG. 3 is an exploded perspective view of the plasma display panel showing-an example of its cell structure.

FIG. 4 is a schematic diagram showing a feature of a front panel according to the present invention.

FIG. 5 is a graph showing a relationship between a stress state of the front panel and impact resistance strength.

FIG. 6 is a diagram showing a method for measuring the impact resistance strength.

FIG. 7 is an exploded perspective view showing a structure of a display panel device to which the present invention is applied.

FIG. 8 is a perspective view showing an appearance of a display device to which the display panel device is attached.

FIG. 9 is a cross section of the display device showing its inside structure.

Claims

1. A flat panel display comprising: a front panel made up of a transparent substrate and a laminate that is fixed to a back side of the transparent substrate; anda back panel that is adhered to the front panel, whereinthe transparent substrate of the front panel has a tensile stress and the laminate of the same has a compressive stress.

2. The flat panel display according to claim 1, wherein impact resistance strength at a middle position of the front panel measured by a hardball drop test is 0.4 J or more.

3. A front panel used for manufacturing a plasma display panel, comprising: a glass substrate on which electrodes are arranged; andan insulator layer for covering the electrodes, whereinthe glass substrate has a tensile stress and the insulator layer has a compressive stress.

4. The front panel according to claim 3, wherein a value of the tensile stress of the glass substrate is within a range of 7-15 kg/cm2.

5. The front panel according to claim 3, wherein a value of a coefficient of thermal expansion of the insulator layer is smaller than a value of a coefficient of thermal expansion of the glass substrate.

6. A display panel device comprising a plasma display panel and a function film adhered to a front face of the plasma display panel, wherein the plasma display panel includes a front panel made up of a glass substrate on which electrodes are arranged and an insulator layer that covers the electrodes, andthe glass substrate of the front panel has a tensile stress and the insulator layer of the same has a compressive stress.

7. The display panel device according to claim 6, wherein impact resistance strength at a middle position of the front panel measured by a hardball drop test is 0.4 J or more.

8. A display panel device comprising a plasma display panel and a rigid member supporting the plasma display panel, wherein the plasma display panel includes a front panel made up of a glass substrate on which electrodes are arranged and an insulator layer that covers the electrodes, and the insulator layer in a state having a compressive stress is fixed to the rigid member.

9. The display panel device according to claim 8, wherein impact resistance strength at a middle position of the front panel measured by a hardball drop test is 0.4 J or more.

10. The display panel device according to claim 9, further comprising a function film adhered to a front face of the plasma display panel.