Display device having improved properties
An image display device having improved properties, comprising an image display panel, heat dispersion material positioned proximate to the image display panel, an open frame positioned proximate to the heat dispersion material opposite the image display panel, and a plurality of electronic components engaging the open frame, the image display device exhibits a support factor of less than about 375 mm-W/m° K.
1. A method for improving temperature uniformity of an image display device comprising an image display panel, wherein the image display panel comprises a plurality of heat sources, the method comprising:
providing a frame system comprising:
a) a metal support member attached to and/or positioned proximate to the image display panel;
b) a heat dispersion material positioned proximate to the metal support member and opposite the image display panel such that the metal support member is positioned between the heat dispersion material and the image display panel; and
c) a framework positioned proximate to the metal support member and/or positioned proximate to the heat dispersion material and opposite the metal support member such that the heat dispersion material is between the metal support member and the framework; and
wherein the heat dispersion material comprises at least one sheet of compressed particles of exfoliated graphite having an in-plane thermal conductivity of at least about 250 W/m·K and a thermal anisotropic ratio of no less than about 10;
wherein the frame system exhibits a support factor of less than about 150 mm·W/m·K, wherein the support factor is determined by multiplying the thickness of the metal support member by its in-plane thermal conductivity; and
wherein the image display device exhibits improved temperature uniformity as compared to an image display device having a frame system which exhibits a support factor of less than 150 mm·W/m·K but does not include a heat dispersion material having an in-plane thermal conductivity of at least 250 W/m·K and a thermal anisotropic ratio of no less than 10 proximate to the metal support member.
2. The method of claim 1 , wherein the heat dispersion material comprises at least one sheet of compressed particles of exfoliated graphite having an in-plane thermal conductivity of at least 250 W/m·K and a thermal anisotropic ratio of no less than 10; and wherein the frame system exhibits a support factor of less than 150 mm·W/m·K.
3. The method of claim 2 , wherein the metal support member comprises a steel sheet.
4. The method of claim 2 , wherein the framework comprises a height and width, wherein the heat dispersion material spans one or both of the height and width of the framework.
5. The method of claim 2 , wherein the frame system further comprises one or more cross supports spanning the framework.
6. The method of claim 2 , wherein the heat dispersion material is in operative thermal contact with the plurality of heat sources of the image display panel.
7. The method of claim 2 , wherein the image display device further comprises a plurality of electronic components, wherein the plurality of electronic components engage one or both of the metal support member and the framework.
8. The method of claim 7 , wherein the heat dispersion material is in operative thermal contact with the plurality of electronic components.