Image display device
View Patent ↗The present invention provides an image display device which includes the heat radiation structure with a high radiation effect without increasing the number of parts and requiring additional steps in the manufacture of the display device. A metal foil having a large area is formed on a COF film provided for mounting a driver chip on a display panel, and heat generated by the driver chip is led to the metal foil and is radiated.
1. An image display device comprising:
a display panel forming a plurality of scanning lines and a plurality of data lines thereon;
a driver chip for driving the display panel; and
a film for connecting the driver chip with the display panel, wherein
the driver chip is arranged on the film,
the film includes lines for connecting the driver chip and the display panel to each other and a heat radiation metal foil, and
the film has the single-layered structure which is constituted by forming only one metal layer constituting the lines on a base film, the heat radiation metal foil is formed on the same layer as the metal layer, and heat generated by the driver chip is radiated by transmitting the heat to the heat radiation metal foil.
2. An image display device according to claim 1 , wherein dummy bumps connected to the heat radiation metal foil are formed on a surface of the driver chip in addition to bumps connected to the lines.
3. An image display device comprising:
a display panel forming a plurality of scanning lines and a plurality of data lines thereon;
a driver chip for driving the display panel; and
a film for connecting the driver chip with the display panel, wherein
the driver chip is arranged on the film,
the film includes lines for connecting the driver chip and the display panel to each other, and a heat radiation metal foil, and
the film has the two-layered single structure which is constituted by forming a metal layer which constitutes the lines on one surface of a base film and by forming a second heat radiation metal foil on another surface of the base film on a side opposite to a surface of the film on which the driver chip is mounted, and the heat radiation metal foil and the second heat radiation metal foil are connected with each other via through holes which go through the base film.
4. An image display device according to claim 3 , wherein dummy bumps connected to the heat radiation metal foil are formed on a surface of the driver chip in addition to bumps connected to the lines.