Detection apparatus for light-emitting diode chips having a light sensing device receiving light beams penetrated through a transparent chuck
View Patent ↗A detection apparatus for light-emitting diode chips comprises a transparent chuck with the light-concentration capability, a probing device and a light-sensing device. The transparent chuck comprises a light-incident plane and a light-emitting plane. The light-incident plane is used to bear a plurality of light-emitting diode chips under detection. The probing device comprises two probe pins and a power supply. The two ends of each probe pin is electrically connected to one of the light-emitting diode chips and the power supply, respectively, to make the light-emitting diode chip emit a plurality of light beams. The light beams penetrate through the transparent chuck by emitting into the incident plane of the transparent chuck. The light-sensing device is disposed on one side of the light-emitting plane of the transparent chuck to receive the light beams which penetrate through the transparent chuck.
1. A detection apparatus for light-emitting diode chips, the detection apparatus at least comprising:
a transparent chuck with the light-concentration capability, the transparent chuck comprising a light-incident plane and a light-emitting plane, where the light-incident plane is used to bear a plurality of light-emitting diode chips under detection;
a probing device, comprising two probe pins and a power supply, the two ends of each probe pin being electrically connected respectively to one of the light-emitting diode chips and the power supply to enable the light-emitting diode chip to emit a plurality of light beams which are emitted into the light-incident plane; and
a light-sensing device, disposed on one side of the light-emitting plane of the transparent chuck to receive the light beams which penetrate through the transparent chuck.
2. The detection apparatus for light-emitting diode chips of claim 1 , wherein the area of the light-emitting plane of the transparent chuck is smaller than that of the light-incident plane.
3. The detection apparatus for light-emitting diode chips of claim 1 , wherein the light-emitting plane of the transparent chuck comprises a plurality of micro-structures.
4. The detection apparatus for light-emitting diode chips of claim 3 , wherein the micro-structures are prisms having a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface jointly form a vertex angle.
5. The detection apparatus for light-emitting diode chips of claim 3 , wherein each of the micro-structures has a curved surface.
6. The detection apparatus for light-emitting diode chips of claim 1 , wherein the cross section of the light-emitting plane of the transparent chuck is an outward curved convex.
7. The detection apparatus for light-emitting diode chips of claim 1 , wherein the internal of the transparent chuck comprises a storage space in which a convergent lens is installed to provide the transparent chuck with the light-concentration function.
8. The detection apparatus for light-emitting diode chips of claim 1 , wherein the internal of the transparent chuck comprises a storage space in which a light guide device is installed to guide the light beams which are emitted into the transparent chuck.
9. The detection apparatus for light-emitting diode chips of claim 8 , wherein the light guide device is an optical fiber.
10. The detection apparatus for light-emitting diode chips of claim 8 , wherein the light guide device is a light guide pillar or a light guide panel.
11. The detection apparatus for light-emitting diode chips of claim 1 , wherein the light-sensing device is an integral sphere, a solar panel, a phototransistor, or a light dependent resistance (LDR).