Display device with hollowed part in backlight

Inventors: Jin Nakamura (Sakai, JP); Nobuhisa Nakajima (Sakai, JP); Isao Takahashi (Sakai, JP); Hiroyuki Watatani (Sakai, JP)

Assignee: SHARP KABUSHIKI KAISHA

H04N5/2257 G02F1/1368 G02F1/133345 G02F1/133512 G02F1/133528 G02F1/136286 H01L27/124 H01L27/3234 H01L27/3276 H01L51/5253 G02F2201/121 G02F2201/123 G02F2201/50

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Quick Facts

Patent No.: US 11,057,554
App. No.: 16/614,406
Granted: Jul 6, 2021
Kind: B2

External Links

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Abstract

Disposing a functional device such as a camera on a display surface widens a frame. A display device ( 2 ) includes a display panel (DP) including a first substrate ( 5 ). The display panel has a transparent section (TS) from which display light does not go out and which has a partial region ( 5 s ) of the first substrate. In plan view, the transparent section which is larger than a pixel (PX) is disposed on an inner side of an edge of a display area ( 3 ) or is disposed to cut out the display area. The display panel has a back surface on which a functional device (FD) configured to perform at least one of light reception or light emission is disposed to overlap the transparent section.

Claims (76)

1. A display device comprising:

a display panel including a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate;

a first polarizer and a second polarizer between which the display panel is sandwiched; and

a backlight unit provided at a back surface of the display panel, wherein

the backlight unit has a hollowed part,

the display panel has a portion which overlaps the hollowed part in plan view and at which the first polarizer and the second polarizer have openings, the portion serving as a transparent section,

the display panel at the transparent section emits no display light,

in plan view, the transparent section is larger than a pixel and is provided on an inner side of an edge of a display area or is provided so as to cut out the display area, and

the display panel has a back surface on which a functional device configured to perform at least one of light reception or light emission is disposed to overlap the transparent section.

2. The display device according to claim 1 , wherein

the first substrate includes a scan signal line, a data signal line, a transistor, and a pixel electrode;

the second substrate includes a primary color filter; and

the second substrate has a partial region at the transparent section which partial region is provided with a colorless coat but is not provided with the primary color filter.

3. The display device according to claim 1 , wherein

the openings of the first polarizer and the second polarizer are hollowed parts formed in the first polarizer and the second polarizer, respectively, and

the transparent section is a part of the display panel exposed via the hollowed parts formed in the first polarizer and the second polarizer.

4. The display device according to claim 1 , wherein

the functional device is disposed in the hollowed part.

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

a light shielding section provided to surround the transparent section.

6. The display device according to claim 1 , wherein

the transparent section includes a partial region of the first substrate and a partial region of the second substrate, and

in the transparent section, the liquid crystal layer is sandwiched between the partial region of the first substrate and the partial region of the second substrate.

7. The display device according to claim 1 , wherein

the transparent section includes a partial region of the first substrate and a partial region of the second substrate, and

the transparent section includes a seal layer which is transparent and which is sandwiched between the partial region of the first substrate and the partial region of the second substrate.

8. The display device according to claim 1 , wherein

the transparent section includes a partial region of the second substrate, and

the transparent section includes a transparent resin which is provided on a surface side of the partial region of the second substrate and which inhibits transmission of ultraviolet radiation.

9. The display device according to claim 8 , wherein

the transparent resin is disposed in the opening formed in the second polarizer.

10. The display device according to claim 8 , further comprising:

a protection plate bonded to the display panel with the transparent resin.

11. The display device according to claim 1 , wherein