Display device and method of driving the same

Patent metadata

Field	Value
Publication number	US-10120503-B2
Application number	US-201715488645-A
Country	US
Kind code	B2
Filing date	Apr 17, 2017
Priority date	May 2, 2016
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

According to one embodiment, a display device includes drive electrodes, sensing electrodes, a driver, a first sensor circuit, and a second sensor circuit, wherein the drive electrodes include first drive electrodes and second drive electrodes which are arranged between the adjacent first drive electrodes, and a first width of the first drive electrodes in a first direction is an integer multiple of a second width of the second drive electrodes in the first direction.

First claim

What is claimed is:

1. A display device comprising:
drive electrodes which are arranged side by side in a first direction;
sensing electrodes which produce capacitance between the drive electrodes and the sensing electrodes;
a driver which supplies either a first drive signal or a second drive signal to the drive electrodes;
a first sensor circuit which senses an object in contact with or in proximity to a sensing area based on first sensing signals which are obtained from the sensing electrodes in response to the first drive signal; and
a second sensor circuit which senses the object in contact with or in proximity to the sensing area based on second sensing signals which are obtained from the drive electrodes in response to the second drive signal,
wherein the drive electrodes include first drive electrodes and second drive electrodes,
wherein the second drive electrodes are arranged between the first drive electrodes which are adjacent to each other, and
wherein a first width of the first drive electrodes in the first direction is an integer multiple of a second width of the second drive electrodes in the first direction.

2. The display device of claim 1 , wherein
the number of the second drive electrodes which are arranged between the adjacent first drive electrodes is two, and
the first width is twice the second width.

3. The display device of claim 2 , wherein
the driver sequentially supplies the first drive signal to a plurality of first blocks of the drive electrodes, each of the first blocks including a first predetermined number of drive electrodes which are successively arranged in the first direction, and simultaneously supplies the second drive signal to a plurality of second blocks of the drive electrodes, each of the second blocks including a second predetermined number of drive electrodes which are successively arranged in the first direction, and
center lines of the first blocks in the first direction are aligned with center lines of the second blocks in the first direction, respectively.

4. The display device of claim 3 , wherein the adjacent first blocks share the same second drive electrodes with each other.

5. A driving method of a display device comprising:
providing the display device including drive electrodes which are arranged side by side in a first direction; sensing electrodes which produce capacitance between the drive electrodes and the sensing electrodes; a driver which supplies either a first drive signal or a second drive signal to the drive electrodes; a first sensor circuit which senses an object in contact with or in proximity to a sensing area based on first sensing signals which are obtained from the sensing electrodes in response to the first drive signal; and a second sensor circuit which senses the object in contact with or in proximity to the sensing area based on second sensing signals which are obtained from the drive electrodes in response to the second drive signal, wherein the drive electrodes include first drive electrodes and second drive electrodes, wherein the second drive electrodes are arranged between the first drive electrodes which are adjacent to each other, and wherein a first width of the first drive electrodes in the first direction is an integer multiple of a second width of the second drive electrodes in the first direction;
sequentially supplying the first drive signal to a plurality of first blocks of the drive electrodes, each of the first blocks including a first predetermined number of drive electrodes which are successively arranged in the first direction;
simultaneously supplying the second drive signal to a plurality of second blocks of the drive electrodes, each of the second blocks including a second predetermined number of drive electrodes which are successively arranged in the first direction; and
aligning center lines of the first blocks in the first direction with center lines of the second blocks in the first direction, respectively.

6. The driving method of claim 5 , wherein
the number of the second drive electrodes which are arranged between the adjacent first drive electrodes is two, and
the first width is twice the second width.

7. The driving method of claim 6 , wherein the adjacent first blocks share the same second drive electrodes with each other.

Assignees

• Japan Display Inc

Inventors

• Suzuki Takafumi
• Teranishi Yasuyuki

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title