Touch-panel-equipped display device

Patent metadata

Field	Value
Publication number	US-9971439-B2
Application number	US-201515126308-A
Country	US
Kind code	B2
Filing date	Feb 26, 2015
Priority date	Mar 28, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A configuration of a touch-panel-equipped display device in which the occurrence of moire can be suppressed is provided. A touch-panel-equipped display device ( 1 ) includes: a color filter layer ( 121 ) that includes a plurality of pixels (PX) arranged in matrix along a first direction and a second direction that intersect at a right angle; and a sensor pattern layer ( 1220 ) that includes a plurality of electrodes ( 1220 ) arranged along the second direction at a predetermined sensor interval (SY) and is disposed so as to overlap the color filter layer ( 121 ) in a plan view. Each of the plurality of pixels (PX) includes n color filters ( 121 R, 121 G, 121 B) that transmit light in different wavelength regions from one another, where n represents an integer of 3 or more. The n color filters are arranged at predetermined subpixel intervals (CSFY) along the second direction. The sensor interval (SY) and the subpixel interval (CSFY) satisfy the following expression (1):

CFSY ×( n×m +1)≤ SY≤CFSY ×( n ×( m +1)−1)  (1)

where m represents a positive integer.

First claim

The invention claimed is:

1. A touch-panel-equipped display device, comprising:
a color filter layer including a plurality of pixels that are arranged in matrix along a first direction and a second direction that intersect at a right angle; and
a sensor pattern layer including a plurality of electrodes that are arranged along the second direction at a predetermined sensor interval SY, the sensor pattern layer being arranged so as to overlap the color filter layer when viewed in a direction vertical to the first direction and the second direction, wherein
each of the pixels includes n color filters that transmit light in wavelength ranges different from one another, respectively, where n is an integer of 3 or more,
the n color filters are arranged along the second direction at a predetermined subpixel interval CFSY,
the sensor interval SY and the subpixel interval CFSY satisfy an expression (1) below:
CFSY× ( n×m+ 1)≤ SY≤CFSY× ( n× ( m+ 1)−1)  (1)

where m is a positive integer.
the n representing the number of the color filters is 3, and
an expression (2) below is satisfied:
CFSY× 4≤ SY≤CFSY× 5  (2),

the pixels are arranged along the first direction at a predetermined pixel interval CFX,
each of the electrodes are formed so that a bias angle θ is formed between each electrode and the first direction, and
the subpixel interval CFSY, the pixel interval CFX, and the bias angle satisfy an expression (3) below:
a tan(2/3 ×CFSY/CFX )≤θ≤a tan(2 ×CFSY/CFX )  (3).

2. The touch-panel-equipped display device according to claim 1 ,
wherein each of the electrodes is turned every 1/2 of a predetermined cycle SPN along the first direction in such a manner that an angle formed between the electrode and the first direction is reversed, and
the subpixel interval CFSY, the bias angle θ, and the cycle SPN satisfy an expression (4) below:
SPN ≤(6× CFSY )/TAN(θ)  (4).

3. The touch-panel-equipped display device according to claim 2 ,
wherein the subpixel interval CFSY, the bias angle θ, and the cycle SPN satisfy an expression (5) below:
SPN =(6× CFSY )/TAN(θ)  (5).

Assignees

• Sharp Kk

Inventors

• Kira Takatoshi
• Tsujioka Tomotoshi
• Miyazaki Shinichi
• Yabuta Kohji

Classifications

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G06F3/044

  by capacitive means · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133514

  Colour filters · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title