IP Library › Granted Patent US 10,809,596
Granted Patent B2
US 10,809,596 · App. 16/302,308 · Granted Oct 20, 2020

Flash module and terminal comprising same

Inventors: Jong Beom Choi (Seoul, KR); Tae Sung Lee (Seoul, KR); Min Ji Jin (Seoul, KR)
Assignee: LG Innotek Co., Ltd.
G03B15/05G03B15/02G03B15/03H01L33/505H01L33/58G03B2215/0567
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Quick Facts
Patent No.
US 10,809,596
App. No.
16/302,308
Granted
Oct 20, 2020
Kind
B2
Abstract

An embodiment may have a substrate ( 110 ) including a predetermined cavity (C); a plurality of light emitting chips ( 120 ) spaced apart from the cavity (C) of the substrate ( 110 ); a frame ( 130 ), disposed on the substrate ( 110 ) including a support portion ( 132 ) and a guide portion ( 134 ) including a predetermined through hole (H 1 ); and a lens unit ( 140 ) disposed in the through hole (H 1 ) of the guide portion ( 134 ).

Claims (56)

1. A flash module comprising:

a substrate including a predetermined cavity having an opened top;

a plurality of light emitting chips provided in the cavity, and the light emitting chips are spaced apart from each other in the cavity of the substrate;

a frame disposed on the substrate including a support portion and a guide portion, the support portion having a top surface and a bottom surface, the bottom surface of the support portion facing the substrate, and the guide portion extending upward from the top surface of the support portion, the frame having a predetermined through hole defined by the guide portion and passing through the support portion;

a lens unit disposed in the through hole of the guide portion; and

phosphor composition on the plurality of light emitting chips,

wherein the lens unit includes a plurality of light diffusion patterns on a bottom surface of the lens unit,

wherein an upper surface of the lens unit is disposed at a position lower than or equal to the guide portion of the frame, and

wherein the lens unit comprises a first protrusion pattern protruding downward for a first distance from a predetermined horizontal height and a second protrusion pattern protruding downward for a second distance from the predetermined horizontal height, wherein the second distance is less than the first distance,

wherein a first point where the first protrusion pattern and the second protrusion pattern meet is arranged to be lower than the predetermined horizontal height,

wherein the lens unit comprises a third protrusion pattern, the third protrusion pattern protruding downward for a third distance from the predetermined horizontal height, wherein the third distance is less than the second distance,

wherein an intensity of light from the flash module having a wavelength spectrum of 400 nm to 420 nm is greater than an intensity of light from a solar light source having a wavelength of 400 nm to 420 nm.

2. The flash module according to claim 1 , wherein the lens unit is injection-molded in the through-hole of the guide portion.

3. The flash module according to claim 1 , wherein a height of the lens unit is lower than the guide portion of the frame.

4. The flash module according to claim 1 , wherein a center of each of the plurality of light diffusion patterns is overlapped with a center of a different corresponding one of the plurality of light emitting chips.

5. A terminal comprising the flash module of claim 1 .

6. The flash module according to claim 1 , wherein each alignment tolerance between each center of the light diffusion patterns, and each center of the light emitting chips is about 25 μm or less.

7. The flash module according to claim 1 , wherein a second point where the second protrusion pattern and the third protrusion pattern meet is at a same height as the predetermined horizontal height.

8. The flash module according to claim 1 , wherein an intensity of light from the flash module having a wavelength spectrum of 650 nm to 670 nm is greater than an intensity of light from the solar light source having a wavelength of 650 nm to 670 nm.

9. The flash module according to claim 8 , wherein the phosphor composition comprises a red phosphor disposed on one of the plurality of light emitting chips,

wherein the one of the plurality of light emitting chips has an emission center wavelength of 400 to 420 nm,

wherein the intensity of the one of the plurality of light emitting chips having the light emission center wavelength of 400 nm to 420 nm is greater than the intensity of light from the solar light source having the wavelength of 400 nm to 420 nm,

wherein the red phosphor has a luminescent center wavelength of 650 nm to 670 nm with the excitation wavelength of 400 nm to 420 nm of the one of the plurality of light emitting chips, and

wherein the intensity of light from the red phosphor having the excitation center wavelength of 650 nm to 670 nm is greater than the intensity of light from the solar light source having the wavelength of 650 nm to 670 nm.

10. The flash module according to claim 1 , wherein a thickness of the substrate is 4 to 6 times of a height of one of the light emitting chips, and

wherein an optical gap between the one of the light emitting chips and the lens unit is 0.2 to 0.5 mm.

11. A flash module comprising:

a substrate including a predetermined cavity having an opened top;

a plurality of light emitting chips provided in the cavity, and the light emitting chips are spaced apart from each other in the cavity of the substrate;

a frame disposed on the substrate including a support portion and a guide portion, the support portion having a top surface and a bottom surface, the bottom surface of the support portion facing the substrate, and the guide portion extending upward from the top surface of the support portion, the frame having a predetermined through hole defined by the guide portion and passing through the support portion; and

a lens unit disposed in the through hole of the guide portion,

wherein one of the plurality of light emitting chips includes a phosphor composition,

wherein the phosphor composition comprises a red phosphor disposed on the one of the plurality of light emitting chips,

wherein the one of the plurality of light emitting chips has an emission center wavelength of 400 nm to 420 nm,

wherein an intensity of light from the one of the plurality of light emitting chips having the emission center wavelength of 400 nm to 420 nm is greater than an intensity of light from a solar light source having the wavelength of 400 nm to 420 nm,

wherein the phosphor has a luminescent center wavelength of 650 nm to 670 nm with an excitation wavelength of 400 nm to 420 nm of the one of the plurality of light emitting chips, and

wherein an intensity of light having the luminescent center wavelength of 650 nm to 670 nm of the red phosphor is greater than an intensity of light from the solar light source having the wavelength of 650 nm to 670 nm.

12. The flash module according to claim 11 , wherein an upper surface of the lens unit is disposed at a same position or at a lower position as the guide portion of the frame.

13. The flash module according to claim 12 , wherein the lens unit comprises:

a first protrusion pattern protruding downward for a first distance from a predetermined horizontal height;

a second protrusion pattern protruding for a second distance from the predetermined horizontal height, wherein the second distance is less than the first distance; and

a third protrusion pattern protruding for a third distance from the predetermined horizontal height, wherein the third distance is less than the second distance.

14. The flash module according to claim 13 , wherein a first point where the first protrusion pattern and the second protrusion pattern meet is arranged to be lower than the predetermined horizontal height.

15. The flash module according to claim 14 , wherein a second point where the second protrusion pattern and the third protrusion pattern meet is at a same height as the predetermined horizontal height.

16. A flash module comprising:

a substrate including a predetermined cavity having an opened top;

a plurality of light emitting chips provided in the cavity, and the light emitting chips are spaced apart from each other in the cavity of the substrate;

a frame disposed on the substrate including a support portion and a guide portion, the support portion having a top surface and a bottom surface, the bottom surface of the support portion facing the substrate, and the guide portion extending upward from the top surface of the support portion, the frame having a predetermined through hole defined by the guide portion and passing through the support portion;

a lens unit disposed in the through hole of the guide portion; and

phosphor composition on the plurality of light emitting chips,

wherein the lens unit includes a plurality of light diffusion patterns on a bottom surface of the lens unit,

wherein an upper surface of the lens unit is disposed at a position lower than or equal to the guide portion of the frame, and

wherein the lens unit comprises a first protrusion pattern protruding downward for a first distance from a predetermined horizontal height and a second protrusion pattern protruding downward for a second distance from the predetermined horizontal height, wherein the second distance is less than the first distance,

wherein a first point where the first protrusion pattern and the second protrusion pattern meet is arranged to be lower than the predetermined horizontal height, and

wherein an intensity of light from the flash module having the wavelength spectrum of 400 nm to 420 nm is greater than the intensity of light from the solar light source having the wavelength of 400 nm to 420 nm.

17. The flash module according to claim 16 , wherein an intensity of light from the flash module having the wavelength spectrum of 650 nm to 670 nm is greater than an intensity of light from the solar light source having the wavelength intensity of 650 nm to 670 nm.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 25, 2021
From: LG INNOTEK CO., LTD.
To: SUZHOU LEKIN SEMICONDUCTOR CO., LTD.
Reel/Frame 056366/0335 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2018
From: CHOI, JONG BEOM; LEE, TAE SUNG; JIN, MIN JI
To: LG INNOTEK CO., LTD.
Reel/Frame 047526/0096 →
Priority Claims (2)
KR 10-2016-0061544 · May 19, 2016 · national
KR 10-2016-0084778 · Jul 5, 2016 · national
Continuity (1)
Related Publication 20190302573A1 · Oct 3, 2019
Cited By (1)
US 12,282,226