초록 ▼

A light-emitting element circuit. The light-emitting element circuit disposed on a FPC includes a plurality of light-emitting element sub-circuits arranged in parallel in the FPC. Each light-emitting element sub-circuit includes at least one first light-emitting element disposed on a first region of

A light-emitting element circuit. The light-emitting element circuit disposed on a FPC includes a plurality of light-emitting element sub-circuits arranged in parallel in the FPC. Each light-emitting element sub-circuit includes at least one first light-emitting element disposed on a first region of the FPC, and at least one second light-emitting element disposed on a second region of the FPC. The number of the second light-emitting elements is equal to the number of the first light-emitting elements. A current is inputted to the first region, flowing through the first light-emitting elements and the second light-emitting elements sequentially, and is outputted from the second region.

대표청구항 ▼

What is claimed is: 1. A light-emitting element circuit disposed on a FPC, comprising: a first light-emitting element sub-circuit comprising a first light-emitting element disposed on a first region of the FPC, and a second light-emitting element disposed on a second region separated from the first

What is claimed is: 1. A light-emitting element circuit disposed on a FPC, comprising: a first light-emitting element sub-circuit comprising a first light-emitting element disposed on a first region of the FPC, and a second light-emitting element disposed on a second region separated from the first region of the FPC; and a second light-emitting element sub-circuit coupled to the first light-emitting element sub-circuit in parallel, comprising a third light-emitting element disposed on the first region of the FPC and a fourth light-emitting element disposed on the second region separated from the first region of the FPC; wherein a first current flows through the first light-emitting element and the second light-emitting element sequentially, a second current different from the first current flows through the third light-emitting element and the fourth light-emitting element sequentially, and current path lengths of the first current and the second current are different. 2. The light-emitting element circuit of claim 1, wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are light-emitting diodes. 3. The light-emitting element circuit of claim 1, wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are laser diodes. 4. The light-emitting element circuit of claim 1, wherein a sum of the first current and the second current in the first region is equal to that in the second region. 5. The light-emitting element circuit of claim 1, wherein lengths of current paths differ between adjacent light-emitting elements. 6. A light-emitting element circuit disposed on a FPC (flexible printed circuit), the FPC having a first surface and a second surface, the light-emitting element circuit comprising: a first light-emitting element sub-circuit comprising a first light-emitting element disposed on a first region of the FPC and a second light-emitting element disposed on a second region separated from the first region of the FPC; and a second light-emitting element sub-circuit coupled to the first light-emitting element sub-circuit in parallel, comprising a third light-emitting element disposed on the first region of the FPC and a fourth light-emitting element disposed on the second region separated from the first region of the FPC; wherein a first current flows through the first light-emitting element and the second light-emitting element sequentially, a second current different from the first current flows through the third light-emitting element and the fourth light-emitting element sequentially; and wherein both the first region and the second region are on the first surface of the FPC. 7. The light-emitting element circuit of claim 6, wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are light-emitting diodes. 8. The light-emitting element circuit of claim 6, wherein the first light-emitting element, the second light-emitting elements, the third light-emitting element, and the fourth light-emitting element are laser diodes. 9. The light-emitting element circuit of claim 6, wherein current path lengths of the first current and the second current are different. 10. The light-emitting element circuit of claim 6, wherein lengths of current paths differ between adjacent light-emitting elements. 11. The light-emitting element circuit of claim 6, wherein a sum of the first current and the second current in the first region is equal to that in the second region. 12. The light-emitting element circuit of claim 6, wherein the first light-emitting element sub-circuit and the second light-emitting element sub-circuit are coplanar. 13. The light-emitting element circuit of claim 6, wherein the first light-emitting element and the second light-emitting element are connected in serial, and the third light-emitting element and the fourth light-emitting element are connected in serial. 14. A liquid crystal display device comprising: a liquid crystal display panel; and a light unit coupled to the liquid crystal display panel, comprising: a FPC where a light-emitting circuit is arranged, the FPC having a first surface and a second surface, wherein the light emitting element circuit comprises: a first light-emitting element sub-circuit comprising a first light-emitting element disposed on a first region of the FPC and a second light-emitting element disposed on a second region separated from the first region of the FPC; and a second light-emitting element sub-circuit coupled to the first light-emitting element sub-circuit in parallel, comprising a third light-emitting element disposed on the first region of the FPC and a fourth light-emitting element disposed on the second region separated from the first region of the FPC; wherein a first current flows through the first light-emitting element and the second light-emitting element sequentially, a second current different from the first current flows through the third light-emitting element and the fourth light-emitting element sequentially; and wherein both the first region and the second region are on the first surface of the FPC; a light guide plate coupled to the liquid crystal display panel; and a light guide pipe coupled between the light guide plate and the FPC. 15. The liquid crystal display device of claim 14 wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are light-emitting diodes. 16. The liquid crystal display device of claim 14 wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are laser diodes. 17. The liquid crystal display device of claim 14, wherein current path lengths of the first current and the second current are different. 18. The liquid crystal display device of claim 14, wherein lengths of current paths differ between adjacent light-emitting elements. 19. The light-emitting element circuit of claim 14, wherein a sum of the first current and the second current in the first region is equal to that in the second region. 20. The light-emitting element circuit of claim 14, wherein the first light-emitting element sub-circuit and the second light-emitting element sub-circuit are coplanar. 21. The light-emitting element circuit of claim 14, wherein the first light-emitting element and the second light-emitting element are connected in serial, and the third light-emitting element and the fourth light-emitting element are connected in serial. 22. A liquid crystal display device comprising: a liquid crystal display panel; and a light unit coupled to the liquid crystal display panel, comprising: a FPC where a light-emitting element circuit is arranged, wherein the light emitting element circuit comprising: a first light-emitting element sub-circuit comprising a first light-emitting element disposed on a first region of the FPC, and a second light-emitting element disposed on a second region separated from the first region of the FPC; and a second light-emitting element sub-circuit coupled to the first light-emitting element sub-circuit in parallel, comprising a third light-emitting element disposed on the first region of the FPC and a fourth light-emitting element disposed on the second region separated from the first region of the FPC; wherein a first current flows through the first light-emitting element and the second light-emitting element sequentially, a second current different from the first current flows through the third light-emitting element and the fourth light-emitting element sequentially, and current path lengths of the first current and the second current are different; a light guide plate coupled to the liquid crystal display panel; and a light guide pipe coupled between the light guide plate and the FPC. 23. The liquid crystal display device of claim 22 wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are light-emitting diodes. 24. The liquid crystal display device of claim 22 wherein the first light-emitting element, the second light-emitting element, the third light-emitting element, and the fourth light-emitting element are laser diodes. 25. The liquid crystal display device of claim 22, wherein a sum of the first current and the second current in the first region is equal to that in the second region. 26. The liquid crystal display device of claim 22, wherein lengths of current paths differ between adjacent light-emitting elements.