DISPLAY DEVICE

• US 20170351019A1
• Filed: 12/18/2015
• Published: 12/07/2017
• Est. Priority Date: 12/26/2014
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: KADOWAKI, SHINYA, ISHIDA, TAKESHI, MURATA, MITSUHIRO, YUKI, RYUZO, WATANABE, HISASHI, MASUDA, TAKESHI
• Granted Patent: US 10,353,132 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 6/0051 Diffusing sheet or layer
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02B 6/0091 of the light source relative to the light guide G02B6/0021 takes precedence
• CPC Class Codes: G02F 1/133302 Rigid substrates, e.g. inorganic substrates
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/56 Substrates having a particular shape, e.g. non-rectangular
• CPC Class Codes: G09F 9/00 Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00

Abstract

A liquid crystal display device includes a liquid crystal panel, a liquid crystal panel flexible circuit board, and a backlight unit. The backlight unit includes LEDs, a light guide plate, a chassis, and an LED board. The light guide plate has an outer shape conforming to an outer shape of the liquid crystal panel. The chassis including a sidewall portion which surrounds the light guide plate and the LEDs. The LED board has an outer shape conforming to the outer shape of the light guide plate. The LEDs are mounted on the LED board at intervals in the circumferential direction. The LED board includes LED mount portions, and LED interval portions. The LED interval portions include a cut-out LED interval portion. Between the cut-out LED interval portion and the sidewall portion, a liquid crystal panel flexible circuit board passing space is provided.

Claims

1. A display device comprising:

a display panel;

a flexible circuit board connected to the display panel; and

a lighting unit configured to irradiate the display panel with light,

the lighting unit including;

a plurality of light sources;

a light guide plate having an outer shape conforming to an outer shape of the display panel, and configured to guide light from the plurality of light sources;

a case holding the plurality of light sources and the light guide plate therein, the case including a sidewall portion surrounding at least the light guide plate and the plurality of light sources;

a light source board having an outer shape conforming to the outer shape of the light guide plate, and on which the plurality of light sources are mounted side by side at intervals along a circumferential direction of the light source board to surround the light guide plate,

the light source board including;

at least a plurality of light source mount portions in which the plurality of light sources are mounted, respectively; and

a plurality of light source interval portions disposed between the light source mount portions that are adjacent with respect to the circumferential direction, the light source interval portions including a cut-out light source interval portion with a cut-out outer edge; and

a flexible circuit board passing space between the cut-out light source interval portion and the sidewall portion for passing the flexible circuit board therethrough.

2. The display device according to claim 1, wherein

the flexible circuit board includes a plurality of divided flexible circuit boards, and

the light source interval portions include a plurality of the cut-out light source interval portions which are equal to or greater in number than the divided flexible circuit boards.

3. The display device according to claim 2, wherein the plurality of light sources are disposed on the light source board at equal intervals with respect to the circumferential direction.

4. The display device according to claim 2, wherein

the plurality of light source interval portions that are adjacent via the light source mount portions with respect to the circumferential direction include the plurality of the cut-out light source interval portions, and

the plurality of divided flexible circuit boards are connected to the display panel respectively through a plurality of the flexible circuit board passing spaces provided between the cut-out light source interval portions and the sidewall portion.

5. The display device according to claim 1, further comprising:

a touch panel having an outer shape conforming to the outer shape of the display panel; and

a touch panel flexible circuit board connected to the touch panel,

wherein the cut-out light source interval portion includes a cut-out light source interval portion forming a touch panel flexible circuit board passing space with the sidewall portion for passing the touch panel flexible circuit board therethrough.

6. The display device according to claim 5, wherein

the touch panel flexible circuit board includes a plurality of divided touch panel flexible circuit boards, and

the light source interval portions include a plurality of the cut-out light source interval portions which are greater in number than the divided touch panel flexible circuit boards.

7. The display device according to claim 6, wherein

a plurality of the light source interval portions that are adjacent via the light source mount portions with respect to the circumferential direction include the cut-out light source interval portions, and

the plurality of divided touch panel flexible circuit boards are connected to the touch panel respectively through the touch panel flexible circuit board passing spaces provided between the plurality of cut-out light source interval portions and the sidewall portion.

8. The display device according to claim 1, wherein some of the plurality of light source interval portions include the cut-out light source interval portions.

9. The display device according to claim 1, wherein all of the plurality of light source interval portions include the cut-out light source interval portions.

10. The display device according to claim 1, wherein the sidewall portion includes, in a portion facing the flexible circuit board passing space, a positioning portion configured to abut on each of the ends of the flexible circuit board with respect to the circumferential direction.

11. The display device according to claim 10, wherein

the light source board has a circular outer shape, and

the positioning portion abuts on each of the ends of the cut-out light source interval portion with respect to the circumferential direction.

12. The display device according to claim 1, wherein the light source board has a ring-shape.