# US 8,770,791 B2 · Light bar structure and display device

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- Number: US 8,770,791 B2
- Document ID: US8770791B2
- Status: Granted
- Kind: B2
- Application number: 13/009,860
- Filed: 2011-01-20
- Published: 2012-05-10
- Granted: 2014-07-08
- Earliest claimed: 2010-11-10
- Assignees: Chunghwa Picture Tubes, Ltd.
- Applicants: Sheng-Chieh Chao; Cheng-Sheng Chiang; Po-Fu Kuo
- Inventors: Sheng-Chieh Chao; Cheng-Sheng Chiang; Po-Fu Kuo
- Web page: https://patentgrep.com/patent/US8770791B2

## CPC

- H05K 1/184: associated with components inserted in holes through the PCBs and wherein terminals of the components are connected to printed contacts on the walls of the holes or at the edges thereof or protruding over or into the holes
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G02F 1/133612: {Electrical details}
- H05K 2201/10106: Light emitting diode [LED]
- H05K 2201/10128: Display
- H05K 2201/10757: Bent leads
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- 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

## Abstract

A light bar structure includes a circuit board and a plurality of light emitting units. A plurality of holes is formed on the circuit board. Each light emitting unit includes a main body and a plurality of leads. The main body is disposed in one of the holes. The main body has a light emitting surface and a non-light emitting surface opposite to the light emitting surface. Each lead has a first connecting portion, a second connecting portion and an extending portion. The first connecting portion is connected to the non-light emitting surface. The extending portion is extended from the first connecting portion toward the light emitting surface. The second connecting portion is extended from the extending portion and connected to a surface of the circuit board.

## Claims

### Claim 1

A light bar structure comprising:
a circuit board, a plurality of holes being formed on the circuit board; and
a plurality of light emitting units, each of the light emitting units comprising:
a main body disposed in one of the holes, the main body having a not fully encapsulated light emitting surface and a non-light emitting surface opposite to the light emitting surface, the light emitting surface of the main body being lower than a surface of the circuit board, or the light emitting surface of the main body and the surface of the circuit board being at an identical level; and
a plurality of leads, each of the leads being disposed in the one of the holes and having a first connecting portion, a second connecting portion and an extending portion, the first connecting portion being connected to the non-light emitting surface, the extending portion being extended from the first connecting portion toward the light emitting surface, and the second connecting portion being extended from the extending portion and connected to the surface of the circuit board.

### Claim 2 (depends on 1)

The light bar structure of claim 1, wherein each of the leads is Z-shaped.

### Claim 3 (depends on 1)

The light bar structure of claim 1, wherein each of the light emitting units is a light emitting diode.

### Claim 4

A display device comprising:
a display panel; and
a backlight module comprising:
a frame, the display panel disposed on the frame;
a light guide plate disposed in the frame; and
a light bar structure disposed in the frame and located at a side of the light guide plate, the light bar structure comprising:
a circuit board, a plurality of holes being formed on the circuit board; and
a plurality of light emitting units, each of the light emitting units comprising:
a main body disposed in one of the holes, the main body having a not fully encapsulated light emitting surface and a non-light emitting surface opposite to the light emitting surface, the light emitting surface of the main body being lower than a surface of the circuit board, or the light emitting surface of the main body and the surface of the circuit board being at an identical level; and
a plurality of leads, each of the leads being disposed in the one of the holes and having a first connecting portion, a second connecting portion and an extending portion, the first connecting portion being connected to the non-light emitting surface, the extending portion being extended from the first connecting portion toward the light emitting surface, and the second connecting portion being extended from the extending portion and connected to the surface of the circuit board.

### Claim 5 (depends on 4)

The display device of claim 4, wherein each of the leads is Z-shaped.

### Claim 6 (depends on 4)

The display device of claim 4, wherein each of the light emitting units is a light emitting diode.

### Claim 7 (depends on 4)

The display device of claim 4, wherein the display panel has an active area, a first distance is between an edge of the active area and the light emitting surface, a second distance is between the edge of the active area and the surface of the circuit board, and the first distance is larger than or equal to the second distance.

### Claim 8 (depends on 4)

The display device of claim 4, wherein the display panel is a liquid crystal display panel.