Abstract: A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury.

Abstract: A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury.

Abstract: A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury.

Abstract: A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode. The cathode electrode is on the lower substrate. The carbon nanotube is electrically connected to the cathode electrode. The upper substrate faces the lower substrate. The fluorescent layer and the anode electrode are formed on the upper substrate. Therefore, the planar light source device generates light without using mercury.

Abstract: A display device includes a visible light reflecting layer and a fluorescent layer. The visible light reflecting layer transmits an invisible light. The visible light is reflected from the visible light reflecting layer. The fluorescent layer is on the visible light reflecting layer to generate a visible light in response to the invisible light that has passed through the visible light reflecting layer. The fluorescent layer transmits the visible light reflected from the visible light reflecting layer. Therefore, a manufacturing cost is decreased, and an efficiency of light is improved.

Abstract: A backlight assembly includes a planar fluorescent lamp, a heat-discharge member and a bottom chassis. The planar fluorescent lamp includes a lamp body, a first external electrode and a second external electrode. The lamp body emits light, the first external electrode is formed on an upper face of the lamp body and the second external electrode is formed on a lower face of the lamp body. The heat-discharge member is coupled to the planar fluorescent lamp allowing the heat-discharge member to make contact with the first and second external electrodes. The bottom chassis includes a bottom portion and a side portion to receive the planar fluorescent lamp and makes contact with the heat-discharge member. Thus, the backlight assembly may effectively discharge heat generated from planar fluorescent lamp and prevent a pin-hole defect.