Display device integrated with touch screen panel

• US 9,019,221 B2
• Filed: 10/31/2012
• Issued: 04/28/2015
• Est. Priority Date: 07/31/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Cho, Se-Il
• Primary Examiner(s): Chang, Kent
• Assistant Examiner(s): BRITTINGHAM, NATHANIEL P
• Application Number:
  US13/665,572
• Publication Number:
  US 20140035839A1
• Time in Patent Office: 909 Days
• Field of Search: 345156-178, 359/599
• US Class Current: 345/173
• 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 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

In a display device integrated with a touch screen panel, light scattering patterns corresponding to regions between dummy patterns are formed in partial regions of first electrodes in order to prevent the first electrodes of the touch screen panel, formed on one surface of the top substrate of the display device, from being visible due to a difference in degrees of scattering light by external light between the first electrodes and the plurality of dummy patterns formed between the first electrodes.

Claims

1. A display device integrated with a touch screen panel, comprising:

a first substrate on which a plurality of pixels are formed;

a second substrate positioned to face the first substrate, and having a plurality of first electrodes arranged in stripes extending in a lengthwise direction formed on one surface thereof; and

a plurality of island-shaped dummy patterns formed between the plurality of first electrodes;

light scattering patterns being formed in partial regions of the first electrodes;

the light scattering patterns at left and right ends of one of the plurality of first electrodes are non-symmetrical such that an axis of the first electrode perpendicular to the lengthwise direction of the first electrode does not simultaneously overlap the light scattering patterns at the left ends and the light scattering patterns at the right ends,

shapes of the light scattering patterns at the left ends are symmetrical to shapes of the light scattering patterns at the right ends, and

the light scattering patterns at one of the left end or the right end are offset and separated from the light scattering patterns at the other one of the left end or the right end by a length of a continuous straight edge of one of the plurality of dummy patterns.

2. The display device integrated with a touch screen panel as claimed in claim 1, the light scattering patterns being patterned so as to be engraved or are realized by apertures.

3. The display device integrated with a touch screen panel as claimed in claim 1, the light scattering patterns comprising first light scattering patterns formed so as to protrude from left and right ends of the first electrode to an interior of the first electrode.

4. The display device integrated with a touch screen panel as claimed in claim 3, the first light scattering patterns positioned at a left end of the first electrode and the first light scattering patterns positioned at a right end of the first electrode being arranged to offset and parallel to each other.

5. The display device integrated with a touch screen panel as claimed in claim 3, the first light scattering patterns being arranged to run parallel with regions between dummy patterns adjacent thereto.

6. The display device integrated with a touch screen panel as claimed in claim 5, the light scattering patterns further comprising second light scattering patterns arranged to run parallel with the first light scattering patterns in a center of the first electrode.

7. The display device integrated with a touch screen panel as claimed in claim 6, the second light scattering patterns being positioned between the first light scattering patterns adjacent from side to side.

8. The display device integrated with a touch screen panel as claimed in claim 6, the light scattering patterns further comprising third light scattering patterns arranged in a direction perpendicular to the first and second light scattering patterns in the center of the first electrode.

10. The display device integrated with a touch screen panel as claimed in claim 1, the first electrodes being arranged on a top surface of a second substrate, and second electrodes, arranged in a direction that intersects the first electrodes, being formed on a bottom surface of the second substrate.

11. The display device integrated with a touch screen panel as claimed in claim 10, the first electrodes operating as sensing electrodes of the touch screen panel, and the second electrodes operating as driving electrodes of the touch screen panel.

9. The display device integrated with a touch screen panel, comprising:

a first substrate on which a plurality of pixels are formed;

a second substrate positioned to face the first substrate, and having a plurality of first electrodes arranged in stripes extending in a lengthwise direction formed on one surface thereof;

a plurality of island-shaped dummy patterns formed between the plurality of first electrodes; and

light scattering patterns being formed in partial regions of the first electrodes,

the light scattering patterns comprising;

first light scattering patterns formed so as to protrude from left and right ends of the first electrode to an interior of the first electrode;

second light scattering patterns arranged to run parallel with the first light scattering patterns in a center of the first electrode; and

third light scattering patterns arranged in a direction perpendicular to the first and second light scattering patterns in the center of the first electrode,

the first light scattering patterns being arranged to run parallel with regions between dummy patterns adjacent thereto,

the third light scattering patterns being positioned between adjacent second light scattering patterns, and top of each of the third light scattering patterns is adjacent to one of the adjacent second light scattering patterns, bottom of the third scattering patterns is adjacent to another one of the adjacent second light scattering patterns.