21
`
`What is Claimed is:
`
`l. A liquid crystal display device comprising a
`
`liquid crystal display panel to which an image signal is
`
`input, and a backlight provided on one side of the liquid
`
`crystal display panel, using a light emitting diode as a
`
`light source of the backlight,
`
`wherein information about white tolerance of the
`
`light source using the light emitting diode,
`
`indicating
`
`one rank of a plurality of ranks assigned to the white
`
`tolerance,
`
`is clearly indicated in a portion of the
`
`backlight, and
`
`the liquid crystal display device further comprises
`
`an image quality processing circuit to which the
`
`information can be input in order to correct gamma
`
`characteristics of the image signal according to the
`
`information.
`
`10
`
`15
`
`2. The liquid crystal display device according to
`
`20
`
`claim 1,
`
`wherein the backlight includes at least a light
`
`guide panel provided to face the liquid crystal display
`
`panel, and a plurality of light.emitting diodes arranged
`
`in parallel on a flexible circuit substrate so that the
`
`25
`
`plurality of light emitting diodes face at least one side
`
`
`
`What is Claimed is:
`
`l. A liquid crystal display device comprising a
`
`liquid crystal display panel to which an image signal is
`
`input, and a backlight provided on one side of the liquid
`
`crystal display panel, using a light emitting diode as a
`
`light source of the backlight,
`
`wherein information about white tolerance of the
`
`light source using the light emitting diode,
`
`indicating
`
`one rank of a plurality of ranks assigned to the white
`
`tolerance,
`
`is clearly indicated in a portion of the
`
`backlight, and
`
`the liquid crystal display device further comprises
`
`an image quality processing circuit to which the
`
`information can be input in order to correct gamma
`
`characteristics of the image signal according to the
`
`information.
`
`10
`
`15
`
`2. The liquid crystal display device according to
`
`20
`
`claim 1,
`
`wherein the backlight includes at least a light
`
`guide panel provided to face the liquid crystal display
`
`panel, and a plurality of light.emitting diodes arranged
`
`in parallel on a flexible circuit substrate so that the
`
`25
`
`plurality of light emitting diodes face at least one side
`
`
`
`22
`
`of a side wall surface of the light guide panel, and
`
`the information indicating the rank of the white
`
`tolerance of the light source using the light emitting
`
`diodes,
`
`is clearly indicated in the flexible circuit
`
`substrate.
`
`10
`
`15
`
`3. The liquid crystal display device according to
`
`claim 2,
`
`wherein the light guide panel,
`
`the light emitting
`
`diodes, and the flexible circuit substrate are housed in a
`
`frame,
`
`the frame includes a control circuit substrate for
`
`driving the light emitting diodes through the flexible
`
`circuit substrate, which is proVided on a surface of the
`
`frame opposite to a surface on which the light guide panel,
`
`the light emitting diodes, and the flexible circuit
`
`substrate are mounted,
`
`an end of the flexible circuit substrate is
`
`electrically coupled to the control circuit substrate
`
`20
`
`through a connector, and
`
`the information indicating the rank of the white
`
`tolerance of the light source using the light emitting
`
`diodes,
`
`is clearly indicated in a portion adjacent to the
`
`connector of the flexible circuit substrate.
`
`25
`
`
`
`23
`
`4. The liquid crystal display device according to
`
`claim 3,
`
`wherein the information indicating the rank of the
`
`white tolerance of the light source using the light
`
`emitting diodes,
`
`is clearly indicated by means of a dummy
`
`resistance attached to the flexible circuit substrate.
`
`5. The liquid crystal display device according to
`
`claim 3,
`
`wherein the information indicating the rank of the
`
`white tolerance of the light source using the light
`
`emitting diodes,
`
`is clearly indicated by means of a bar
`
`code printed on the flexible circuit substrate.
`
`6. The liquid crystal display device according to
`
`claim 3,
`
`10
`
`15
`
`wherein the information indicating the rank of the
`
`white tolerance of the light source using the light
`
`emitting diodes,
`
`is displayed at least on one of a front
`
`20
`
`surface and a back surface of the flexible circuit
`
`substrate.
`
`7. A liquid crystal display panel comprising a
`
`liquid crystal display panel to which an image signal is
`
`25
`
`input, and a backiight provided on one side of the liquid
`
`
`
`24
`
`crystal display panel, using a light emitting diode as a
`
`light source of the backlight,
`
`wherein information about white tolerance of the
`
`light source using the light emitting diode,
`
`indicating
`
`one rank of a plurality of ranks assigned to the white
`
`tolerance,
`
`is stored in a memory device in a portion of
`
`the backlight, and.
`
`the liquid crystal display device further comprises
`
`an image quality processing circuit to which the
`
`10
`
`information stored in the memory device can be input
`
`in
`
`order to correct gamma characteristics of the image signal
`
`according to the information.
`
`8. The liquid crystal display device according to
`
`15
`
`claim 7,
`
`wherein the backlight
`
`includes at least a light
`
`guide panel provided to face the liquid crystal display
`
`panel, a plurality of light emitting diodes provided to
`
`face a side wall surface of the light guide panel, and a
`
`flexible circuit substrate on which the plurality of light
`
`emitting diodes are mounted, and
`
`the memory device is mounted on the flexible circuit
`
`substrate.
`
`9. The liquid crystal display device according to
`
`20
`
`25
`
`
`
`25
`
`claim 7,
`
`wherein the memory device is electrically coupled to
`
`the image quality processing circuit, so that the
`
`information stored in the memory device can be output to
`
`the image quality processing circuit.
`
`10. The liquid crystal display device according to
`
`claim l,
`
`wherein the backlight includes a plurality of light
`
`emitting diodes dispersed on a surface facing the liquid
`
`crystal display panel.
`
`ll. The liquid crystal display device according to
`
`claim 7,
`
`wherein the backlight
`
`includes a plurality of light
`
`emitting diodes dispersed on a surface facing the liquid
`
`crystal display panel.
`
`10
`
`15
`
`
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