# US 2021/0080098 A1 · Lighting module and display device

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- Number: US 2021/0080098 A1
- Document ID: US20210080098A1
- Status: Published application
- Kind: A1
- Application number: 17/023,388
- Filed: 2020-09-17
- Published: 2021-03-18
- Earliest claimed: 2019-09-17
- Assignees: E Ink Holdings Inc.
- Applicants: E Ink Holdings Inc.
- Inventors: Tsai-Wei SHEI; Yen-Ze HUANG; Ching-Huan LIAO; Yu-Chuan WEN; Sheng-Chieh TAI
- Web page: https://patentgrep.com/patent/US20210080098A1

## CPC

- F21V 31/005: {Sealing arrangements therefor}
- G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)}
- F21K 9/61: using light guides
- G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)}
- F21Y 2115/10: Light-emitting diodes [LED]
- G02B 6/0083: {Details of electrical connections of light sources to drivers, circuit boards, or the like}
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- 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

A lighting module includes a circuit board, a light emitting diode, a light guide plate and a glue material. The light emitting diode is disposed over the circuit board, and the light emitting diode includes a light emitting side surface and a non-light emitting side surface. The light guide plate is substantially parallel to the circuit board, and a portion of the light guide plate is disposed over the circuit board and adjacent to the light emitting side surface of the light emitting diode. The glue material covers and is in contact with the non-light emitting side surface of the light emitting diode and the portion of the light guide plate.

## Claims

### Claim 1

A lighting module, comprising:
a circuit board;
a light emitting diode disposed over the circuit board, the light emitting diode including a light emitting side surface and a non-light emitting side surface;
a light guide plate substantially parallel to the circuit board, wherein a portion of the light guide plate is disposed over the circuit board and adjacent to the light emitting side surface of the light emitting diode; and
a glue material covering and being in contact with the non-light emitting side surface of the light emitting diode and the portion of the light guide plate.

### Claim 2 (depends on 1)

The lighting module of claim 1, wherein the glue material covers and is in contact with an upper surface of the portion of the light guide plate.

### Claim 3 (depends on 1)

The lighting module of claim 1, wherein the glue material further covers and is in contact with a portion of the light emitting side surface of the light emitting diode.

### Claim 4 (depends on 1)

The lighting module of claim 1, wherein the portion of the light guide plate is in contact with the circuit board.

### Claim 5 (depends on 1)

The lighting module of claim 1, wherein the light emitting diode further includes a non-light emitting top surface, and the glue material does not cover the non-light emitting top surface of the light emitting diode.

### Claim 6 (depends on 1)

The lighting module of claim 1, wherein a height of the glue material covering the non-light emitting side surface of the light emitting diode is less than or equal to a height of the light emitting diode.

### Claim 7 (depends on 1)

The lighting module of claim 1, wherein the glue material is further disposed between the portion of the light guide plate and the circuit board.

### Claim 8 (depends on 1)

The lighting module of claim 1, wherein the light emitting diode further includes a non-light emitting top surface, and the glue material further covers and is in contact with the non-light emitting top surface of the light emitting diode.

### Claim 9 (depends on 1)

The lighting module of claim 1, wherein the glue material includes a side surface on the portion of the light guide plate, and an inner angle between the side surface and an upper surface of the portion of the light guide plate is less than 90 degrees.

### Claim 10 (depends on 1)

The lighting module of claim 1, wherein the glue material is formed by dispensing, coating, injection molding or hot pressing molding.

### Claim 11 (depends on 1)

The lighting module of claim 1, wherein the glue material comprises light-curing resin, heat-curing resin, moisture-curing resin or a combination thereof.

### Claim 12 (depends on 1)

The lighting module of claim 1, wherein the glue material comprises silicon resin, epoxy, Novolac, rubber, polymethylmethacrylate (PMMA), phenol resin, polyester, polyurethane (PU), polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC), polyethylene terephthalate (PET) or a combination thereof.

### Claim 13 (depends on 1)

A display device, comprising:
the lighting module of claim 1; and
a display panel disposed over a surface of the light guide plate.