Display device with electrically conductive member
View Patent ↗An electrically conductive film is placed between a contact finger and an electrically conductive polarizing plate which hold a display panel therebetween, and static electricity accumulated in the display panel is released to a front frame through the electrically conductive film and the finger. This structure makes it possible to prevent deterioration in the display quality of a display device due to static electricity.
1. A display device, comprising:
a display panel;
first and second holding members for holding the display panel therebetween, the second holding member having electrical conductivity;
an electrically conductive polarizing plate placed between the display panel and the second holding member;
an electrically conductive member placed between the electrically conductive polarizing plate and the second holding member so as to be in contact with the second holding member; and
an electrically conductive film placed between the electrically conductive polarizing plate and the electrically conductive member so as to be in contact with both of the electrically conductive polarizing plate and the electrically conductive member,
wherein the electrically conductive member comprises a finger having a shape in which an end portion of a long flat plate is curved to be convex downward with a predetermined curvature.
2. The display device according to claim 1 , wherein the electrically conductive film comprises two layers, which comprise a first electrically conductive layer comprising one of a metal foil and a carbon foil, and a second electrically conductive layer comprising an electrically conductive adhesive.
3. The display device according to claim 2 , wherein the electrically conductive adhesive is configured by adding an electrically conductive powder to an adhesive material prepared by dissolving one of a rubber and an acrylic resin in an organic solvent.
4. The display device according to claim 3 , wherein the electrically conductive powder comprises at least one selected from a group consisting of nickel, iron, chromium, cobalt, aluminum, antimony, molybdenum, copper, silver, platinum, gold, and carbon.
5. The display device according to claim 2 , wherein the second electrically conductive layer of the electrically conductive film is in contact with the electrically conductive polymer layer.
6. The display device according to claim 1 , wherein the polarizing plate comprises a polarizer layer, an electrically conductive polymer layer provided on the polarizer layer, and a transparent organic protective film provided on the electrically conductive polymer layer.
7. The display device according to claim 6 , wherein the electrically conductive film is in contact with the transparent organic protective film of the polarizing plate.
8. The display device according to claim 6 , wherein the electrically conductive polymer layer comprises an organic monomer having a quaternary ammonium salt group, and one electrically conductive polymer selected from a group consisting of polythiophene, polyaniline, and polypyrrole.
9. The display device according to claim 1 , wherein the second holding member comprises an electrically conductive protruding portion in contact with the electrically conductive film at a side of the polarizing plate.
10. The display device according to claim 9 , wherein the electrically conductive protruding portion is formed integrally with the second holding member.
11. The display device according to claim 1 , wherein the display panel comprises a liquid crystal display panel.