# US 10,503,008 B2 · Quantum dot (QD) lamps and displays

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- Number: US 10,503,008 B2
- Document ID: US10503008B2
- Status: Granted
- Kind: B2
- Application number: 16/023,542
- Filed: 2018-06-29
- Published: 2019-08-29
- Granted: 2019-12-10
- Earliest claimed: 2018-02-28
- Assignees: Huizhou China Star Optoelectronics Technology Co., Ltd.
- Applicants: Huizhou China Star Optoelectronics Technology Co., Ltd.
- Inventors: Yongyuan Qiu
- Web page: https://patentgrep.com/patent/US10503008B2

## CPC

- G02F 1/133604: {with lamps}
- F21K 9/272: Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts (F21K9/278 takes precedence)
- F21K 9/275: Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence)
- F21K 9/278: Arrangement or mounting of circuit elements integrated in the light source
- G02F 1/133603: {with LEDs}
- G02F 1/133605: {including specially adapted reflectors}
- G02F 1/133608: {including particular frames or supporting means}
- F21Y 2115/10: Light-emitting diodes [LED]
- G02F 1/133342: {for double-sided displays}
- G02F 1/133612: {Electrical details}
- G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light}
- G02F 2202/36: Micro- or nanomaterials
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

The present disclosure relates to a quantum dot (QD) lamp and a display. The QD lamp includes an elongated glass tube having two closed ends. The elongated glass tube includes an LED light bar, two ends of the LED light bar respectively are configured with one electrode, and the electrode respectively are protruding from the two ends of the glass tube. An inner wall or an outer wall of the glass tube are coated with QD phosphors. The LED light bar includes a circuit substrate, a plurality of LED chips disposed on the circuit substrate, and a silica gel layer configured to encapsulate the LED chips on the circuit substrate.

## Claims

### Claim 1

A quantum dot (QD) lamp, comprising:
an elongated glass tube having two closed ends, the elongated glass tube comprising an LED light bar, two ends of the LED light bar respectively configured with one electrode, and the electrode respectively protruding from the two ends of the glass tube;
wherein an inner wall or an outer wall of the glass tube are coated with QD phosphors; and
the LED light bar comprises a circuit substrate, a plurality of LED chips disposed on the circuit substrate, and a silica gel layer configured to encapsulate the LED chips on the circuit substrate, wherein radiating particles are dispersedly disposed in the silica gel layer, and inverted cones are formed in the silica gel layer corresponding to the top of each of the LED chips such that middle light of each of the LED chips forms broad angle light by reflection of the inverted cones, wherein the circuit substrate is a transparent flexible printed circuit and a reinforcing layer is further disposed on the silica gel layer, and the reinforcing layer is a glass substrate or a Sapphire substrate to reinforce the LED light bar.

### Claim 2 (depends on 1)

The QD lamp as claimed in claim 1, wherein the inner wall of the glass tube is coated with the QD phosphors uniformly.

### Claim 3 (depends on 1)

The QD lamp as claimed in claim 1, wherein the outer wall of the glass tube is coated with the QD phosphors uniformly, and the QD phosphors are covered by a water-oxygen barrier layer.

### Claim 4 (depends on 3)

The QD lamp as claimed in claim 3, wherein the circuit substrate is a transparent flexible printed circuit or a Sapphire substrate.

### Claim 5 (depends on 3)

The QD lamp as claimed in claim 3, wherein the water-oxygen barrier layer is made by SiOx material.

### Claim 6

A display having direct-type backlight, comprising:
a direct-type backlight module, an optical film set disposed on the direct-type backlight module, and a display panel, wherein the direct-type backlight module comprises a reflective film disposed in an outer frame, a light guide disposed on the reflective film, and a plurality of quantum dot (QD) lamps being configured between the reflective film and the light guide, the QD lamps being spaced apart from each other, each of the QD lamps comprising:
an elongated glass tube having two closed ends, the elongated glass tube comprising an LED light bar, two ends of the LED light bar respectively configured with one electrode, and the electrode respectively protruding from the two ends of the glass tube;
wherein an inner wall or an outer wall of the glass tube are coated with QD phosphors; and
the LED light bar comprises a circuit substrate, a plurality of LED chips disposed on the circuit substrate, and a silica gel layer configured to encapsulate the LED chips on the circuit substrate, wherein radiating particles are dispersedly disposed in the silica gel layer, and inverted cones are formed in the silica gel layer corresponding to the top of each of the LED chips such that middle light of each of the LED chips forms broad angle light by reflection of the inverted cones, wherein the circuit substrate is a transparent flexible printed circuit and a reinforcing layer is further disposed on the silica gel layer, and the reinforcing layer is a glass substrate or a Sapphire substrate to reinforce the LED light bar.

### Claim 7 (depends on 6)

The display as claimed in claim 6, wherein a plurality of reflective curves facing to the light guide are formed on the reflective film, and the QD lamps are disposed in the reflective curves.

### Claim 8

A two-sided display having direct-type backlight, comprising:
a first light guide and a second light guide disposed correspondingly with the first light guide, a first optical film set and a first display panel being sequentially disposed on one side of the first light guide, the one side of the first light guide being away from the second light guide, and a second optical film set and a second display panel being sequentially disposed on one side of the second light guide, the one side of the second light guide being away from the first light guide; wherein a closed space is formed in a frame sealing adhesive between the first light guide and the second light guide, and a plurality of quantum dot (QD) lamps are disposed in the closed space and are spaced apart with each other, each of the QD lamps comprises:
an elongated glass tube having two closed ends, the elongated glass tube comprising an LED light bar, two ends of the LED light bar respectively configured with one electrode, and the electrode respectively protruding from the two ends of the glass tube;
wherein an inner wall or an outer wall of the glass tube are coated with QD phosphors; and
the LED light bar comprises a circuit substrate, a plurality of LED chips disposed on the circuit substrate, and a silica gel layer being configured to encapsulate the LED chips on the circuit substrate, wherein radiating particles are dispersedly disposed in the silica gel layer, and inverted cones are formed in the silica gel layer corresponding to the top of each of the LED chips such that middle light of each of the LED chips forms broad angle light by reflection of the inverted cones, wherein the circuit substrate is a transparent flexible printed circuit and a reinforcing layer is further disposed on the silica gel layer, and the reinforcing layer is a glass substrate or a Sapphire substrate to reinforce the LED light bar.