IP Library Granted Patent US 9,971,190
Granted Patent B2
US 9,971,190 · App. 15/096,462 · Granted May 15, 2018

Display device and electronic apparatus

Inventors: Masaya Tamaki (Tokyo, JP); Yoko Fukunaga (Tokyo, JP); Masashi Mitsui (Tokyo, JP); Susumu Kimura (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/133514G02F1/13394G02F1/133504G02F1/133512G02F1/133553G02F1/134336G02F1/133524G02F2001/133616G02F2001/134345G02F2201/52
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Quick Facts
Patent No.
US 9,971,190
App. No.
15/096,462
Granted
May 15, 2018
Kind
B2
Abstract

According to an aspect, a display device includes: a display surface on which pixels each including sub-pixels of a plurality of colors are two-dimensionally arrayed; a reflective member; a first substrate provided with the reflective member; a second substrate arranged to face the first substrate; a color filter provided with filters of at least two colors corresponding to the sub-pixels; and a scattering member provided on the second substrate. A main viewing angle direction of the display device is a direction intersecting with the display surface. The color filter is formed such that a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the main viewing angle direction in a direction parallel to the display surface.

Claims (24)

1. A display device comprising:

a display surface on which pixels each including four sub-pixels of four colors, the four sub-pixels being arrayed in a matrix of a first viewing angle direction and a second viewing angle direction orthogonal to the first viewing angle direction, wherein the first viewing angle direction is a component in a direction parallel to the display surface of a main viewing angle direction that intersects with the display surface;

a reflective member;

a first substrate provided with the reflective member;

a second substrate arranged to face the first substrate;

a color filter provided with filters of four colors corresponding to the four sub-pixels, the filters including a red filter, a green filter, a blue filter, and a white filter; and

a scattering member provided on the second substrate, wherein

the color filter is formed such that a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the first viewing angle direction in the second viewing angle direction parallel to the display surface,

wherein the pixels are arranged in a matrix on the display surface,

wherein, in each of the pixels,

in the first viewing angle direction, the red filter is adjacent to the blue filter, and the white filter is adjacent to the green filter; and

in the second viewing angle direction, the red filter is adjacent to the white filter, and the blue filter is adjacent to the green filter, and

wherein the four sub-pixels are equal in size.

2. The display device according to claim 1 , wherein

the scattering member is an anisotropic scattering member that has a scattering central axis and scatters light passing therethrough along a scattering axis direction serving as a direction having a predetermined angular range containing the scattering central axis, and

the scattering axis direction is the same direction as the first viewing angle direction.

3. The display device according to claim 2 , wherein

the scattering member includes the anisotropic scattering member provided in plurality, and

the scattering axis direction of each anisotropic scattering member is the same direction.

4. The display device according to claim 1 , wherein

the color filter is provided with a light blocking portion between the filters in an area of each of the pixels, and

a liquid-crystal layer includes a spacer at a position overlapping with the light blocking portion when viewed from a direction orthogonal to the display surface.

5. The display device according to claim 4 , wherein the light blocking portion is arranged between the filters whose difference in the transmittance is largest in the area of each of the pixels.

6. An electronic apparatus comprising the display device according to claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 10, 2017
From: TAMAKI, MASAYA; FUKUNAGA, YOKO; MITSUI, MASASHI; KIMURA, SUSUMU
To: JAPAN DISPLAY INC.
Reel/Frame 041226/0736 →
Priority Claims (1)
JP 2013-080767 · Apr 8, 2013 · national
Continuity (2)
Continuation 14221893 · Mar 21, 2014
Related Publication 20160223861A1 · Aug 4, 2016