Display device

• US 8,878,803 B2
• Filed: 04/13/2011
• Issued: 11/04/2014
• Est. Priority Date: 04/21/2010
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kimura, Tomohiro, Fukuyama, Keiichi
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): KOHLMAN, CHRISTOPHER J
• Application Number:
  US13/642,254
• Publication Number:
  US 20130050126A1
• Time in Patent Office: 1,301 Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/13629 Multilayer wirings
• CPC Class Codes: G02F 2201/12 electrode
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0487 using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H01L 27/1259 Multistep manufacturing methods

Abstract

A liquid crystal display device includes a glass substrate having a first main surface, a glass substrate spaced apart from a first substrate and having a second main surface facing said first main surface, and a highly-sensitive sensor and a low-sensitive sensor arranged between the glass substrate and the glass substrate.

Claims

1. A display device, comprising:

a first substrate having a first main surface;

a second substrate spaced apart from said first substrate and having a second main surface facing said first main surface; and

a first pressure sensor and a second pressure sensor arranged between said first substrate and said second substrate;

wherein

sensitivity of said first pressure sensor being different from sensitivity of said second pressure sensor;

said first pressure sensor includes a first sensor electrode and a second sensor electrode facing said first sensor electrode;

said second pressure sensor includes a third sensor electrode and a fourth sensor electrode facing said third sensor electrode;

the display device further comprises;

a first pressing member pressing said second sensor electrode toward said first sensor electrode; and

a second pressing member pressing said fourth sensor electrode toward said third sensor electrode,

when said second sensor electrode is pressed by said first pressing member, said second sensor electrode comes into contact with said first sensor electrode to conform to said first sensor electrode,

when said fourth sensor electrode is pressed by said second pressing member, said fourth sensor electrode comes into contact with said third sensor electrode to conform to said third sensor electrode,

a shape of said first pressing member is different from a shape of said second pressing member,

said first pressing member presses a central portion of said second sensor electrode, and

said second pressing member presses a portion of said fourth sensor electrode located closer to a peripheral edge of said fourth sensor electrode than a central portion of said fourth sensor electrode.

2. A display device, comprising:

a first substrate having a first main surface;

a second substrate spaced apart from said first substrate and having a second main surface facing said first main surface; and

a first pressure sensor and a second pressure sensor arranged between said first substrate and said second substrate;

wherein

sensitivity of said first pressure sensor being different from sensitivity of said second pressure sensor;

said first pressure sensor includes a first coil located between said first substrate and said second substrate, and a second coil spaced apart from said first coil in a stacking direction of said first substrate and said second substrate and arranged to face said first coil;

said second pressure sensor includes a third coil located between said first substrate and said second substrate, and a fourth coil spaced apart from said third coil in the stacking direction of said first substrate and said second substrate and arranged to face said third coil;

said first coil and said third coil are located closer to said first substrate or said second substrate than said second coil and said fourth coil;

a size of said first coil is different from a size of said third coil;

said first coil and said third coil are located closer to said first substrate or said second substrate than said second coil and said fourth coil, and

an amount of current supplied to said second coil is different from an amount of current supplied to said third coil.