IP Library Granted Patent US 11,996,493
Granted Patent B2
US 11,996,493 · App. 17/395,641 · Granted May 28, 2024

Light-emitting module and display apparatus

Inventors: Min-Hsun Hsieh (Hsinchu, TW); Jen-Chieh Yu (Hsinchu, TW); Chun-Wei Chen (Hsinchu, TW)
Assignee: EPISTAR CORPORATION
H01L31/147G09G3/32H05B45/12G09G2320/0626
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Quick Facts
Patent No.
US 11,996,493
App. No.
17/395,641
Granted
May 28, 2024
Kind
B2
Abstract

The present disclosure provides a light-emitting module and a display apparatus thereof. The light-emitting module includes a circuit substrate which includes a first surface and a second surface opposite to the first surface. The first surface includes a plurality of conductive channels, and the second surface includes a plurality of conductive pads. A plurality of light-emitting groups is arranged in a matrix on the first surface. Each of the light-emitting groups includes a red light-emitting diode chip, a green light-emitting diode chip, and a blue light-emitting diode chip. An electric component is disposed on the first surface and located in the light-emitting groups matrix. A translucent encapsulating component covers the plurality of light-emitting groups and the electric component. Wherein, the light-emitting groups matrix comprises m columns and n rows.

Claims (30)

1. A light-emitting module, comprising:

a circuit substrate, comprising a first surface and a second surface opposite to the first surface, the first surface comprising a plurality of conductive channels, and the second surface comprising a plurality of conductive pads;

a plurality of light-emitting groups arranged in a matrix on the first surface to collectively form a light-emitting groups matrix, each of the light-emitting groups includes a red light-emitting diode chip, a green light-emitting diode chip, and a blue light-emitting diode chip;

an electric component disposed on the first surface and located in the light-emitting groups matrix; and

a translucent encapsulating component covering the plurality of light-emitting groups and the electric component;

wherein the light-emitting groups matrix comprises m columns and n rows,

wherein the light-emitting groups matrix comprises 11 conductive pads at the second surface, and

wherein one of the 11 conductive pads is not electrically connected to any of the light-emitting diode chips.

2. The light-emitting module according to claim 1 , wherein each of the red light-emitting diode chip, the green light-emitting diode chip, and the blue light-emitting diode chip comprises a cathode contact electrode and an anode contact electrode, and the cathode contact electrodes of the light-emitting diode chips in the same row of the light-emitting groups matrix are electrically connected to one of the plurality of conductive pads.

3. The light-emitting module according to claim 2 , wherein the anode contact electrodes of the light-emitting diode chips which emit the same color in the same column of the light-emitting groups matrix are electrically connected to one of the plurality of conductive pads.

4. The light-emitting module according to claim 1 , wherein the one of the 11 conductive pads is formed on the second surface of the circuit substrate and corresponding to the electric component.

5. The light-emitting module according to claim 1 , wherein the translucent encapsulating component comprises carbon black particles.

6. The light-emitting module according to claim 5 , wherein the carbon black particles are greater than or equal to 0.005 wt % and less than 1 wt % in the translucent encapsulating component.

7. The light-emitting module according to claim 1 , wherein the translucent encapsulating component comprises inorganic particle fillers.

8. The light-emitting module according to claim 1 , the electric component is disposed at the center of the light-emitting module from the top view aspect.

9. The light-emitting module according to claim 1 , the electric component is a photodetector and equidistant from the plurality of light-emitting groups from the top view aspect.

10. The light-emitting module according to claim 1 , the electric component is a light-emitting element which emits cyan color.

11. The light-emitting module according to claim 1 , further comprising a light-shielding structure located on and directly contacting the first surface.

12. The light-emitting module according to claim 11 , wherein the light-shielding structure comprises an uneven top surface.

13. A display apparatus, comprising:

a carrier;

a plurality of light-emitting modules according to claim 1 located on the carrier, comprising:

a first light-emitting module; and

a second light-emitting module; and

an electronic signal receiving unit to receive electronic signals emitted by the first light-emitting module and the second light-emitting module.

14. The display apparatus according to claim 13 , further comprising a comparison unit to compare whether each of the first light-emitting module and the second light-emitting module reaches an appropriate brightness range.

15. The display apparatus according to claim 13 , further comprising a feedback controlling unit electrically connected to the first light-emitting module and the second light-emitting module, wherein the feedback controlling unit is able to control a brightness of the first light-emitting module and a brightness of the second light-emitting module.

16. The display apparatus according to claim 13 , wherein the electric component of the first light-emitting module and the electric component of the second light-emitting module are different types of electric components.

17. The display apparatus according to claim 16 , wherein the electric component of the first light-emitting module is an infrared light-emitting diode, and the electric component of the second light-emitting module is an infrared photodiode.

18. The display apparatus according to claim 13 , further comprising a first light-emitting diode in the first light-emitting module and a second light-emitting diode in the second light-emitting module, and wherein the display apparatus has a first side and a second side perpendicular thereto, and a distance between the first light-emitting diode and the second light-emitting diode along the first side is the same as a distance between the first light-emitting diode and the second light-emitting diode along the second side.

Assignments (2)
CHANGE OF NAME Recorded Feb 18, 2026
From: EPISTAR CORPORATION
To: ENNOSTAR CORPORATION
Reel/Frame 075171/0402 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 9, 2021
From: HSIEH, MIN-HSUN; YU, JEN-CHIEH; CHEN, CHUN-WEI
To: EPISTAR CORPORATION
Reel/Frame 057118/0560 →
Priority Claims (1)
CN 202010791217.4 · Aug 7, 2020 · national
Continuity (1)
Related Publication 20220045231A1 · Feb 10, 2022
Cited By (1)
US 12,376,413