Sensor substrate and sensing display panel having the same

• US 9,933,871 B2
• Filed: 10/27/2015
• Issued: 04/03/2018
• Est. Priority Date: 06/21/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, In-Cheol, Park, Ji-Hong, Lee, Hyun-Ju, Lee, Il-Ho, Choi, Moon-Sung, Hwang, Seong-Mo, Kim, Ki-Hyuk, Nam, Seung-Ho
• Primary Examiner(s): Marinelli, Patrick F
• Application Number:
  US14/923,960
• Publication Number:
  US 20160048048A1
• Time in Patent Office: 889 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/136204 Arrangements to prevent high voltage or static electricity failures
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H01L 27/027 specially adapted to provide an electrical current path other than the field effect induced current path
• 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 27/14623 Optical shielding
• CPC Class Codes: H01L 31/0232 Optical elements or arrangements associated with the device H01L31/0236 takes precedence; for photovoltaic cells H01L31/054; for photovoltaic modules H02S40/20
• CPC Class Codes: H01L 31/12 structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto semiconductor devices with at least one potential barrier or surface barrier adapted for light emission H01L33/00; amplifiers using electroluminescent element and photocell H03F17/00; electroluminescent light sources per se H05B33/00

Abstract

A sensor substrate includes a base substrate, a black matrix pattern, a sensing electrode pattern, a driving electrode pattern, and at least one bridge line. The black matrix pattern is disposed on the base substrate and divides the base substrate into a light transmission area and a light blocking area. The sensing electrode pattern includes a plurality of first unit patterns arranged in association with a first direction. The driving electrode pattern includes a plurality of second unit patterns arranged in association with a second direction and disposed adjacent to the plurality of first unit patterns. The at least one bridge line is connected between at least two of the plurality of first unit patterns or between at least two of the plurality of second unit patterns.

Claims

1. A sensing display panel, comprising:

a display substrate comprising;

a plurality of pixel electrodes disposed in a matrix formation, the matrix formation comprising a row direction and a column direction,

a driving electrode pattern comprising a plurality of unit patterns spaced apart from one another in the row direction and overlapping first pixel electrodes among the plurality of pixel electrodes,

a plurality of common electrode patterns spaced apart from and alternately arranged with the plurality of unit patterns in the row direction, the plurality of common electrode patterns overlapping second pixel electrodes among the plurality of pixel electrodes, the second pixel electrodes being different than the first pixel electrodes, each of the plurality of common electrode patterns longitudinally extending in the column direction, and

a common line extended in the row direction; and

a sensor substrate comprising;

a black matrix pattern comprising an area in which the plurality of pixel electrodes is disposed, the area corresponding to a light transmission area, and

a sensing electrode pattern comprising a plurality of lines connected to one another and overlapping the black matrix pattern, the sensing electrode pattern being separate and distinct from the plurality of common electrode patterns.

2. The sensing display panel of claim 1, wherein the display substrate comprises:

first to N-th driving electrode patterns, N being an integer greater than one;

first to M-th common electrode patterns arranged between corresponding unit patterns of the first to N-th driving electrode patterns, M being an integer greater than one;

first to N-th driving groups comprising at least one common line connected to the first to N-th driving electrode patterns; and

first to N-th common groups disposed between the first to N-th driving groups and comprising at least one common line connected to the first to M-th common electrode patterns.

3. The sensing display panel of claim 2, wherein each of the first to N-th driving electrode patterns and each of the first to M-th common electrode patterns is connected to the common line via at least one contact hole.

4. The sensing display panel of claim 2,

wherein a common voltage is caused to be applied to the first to N-th driving electrode patterns via the first to N-th driving groups during an active period of a frame, and

wherein a driving signal is caused to be sequentially applied to the first to N-th driving electrode patterns via the first to N-th driving groups during a blanking period of a frame.

5. The sensing display panel of claim 4,

wherein a common voltage is caused to be applied to the first to M-th common electrode patterns via the first to N-th common groups during an active period of a frame, and

wherein the common voltage is caused to be applied to the first to M-th common electrode patterns via the first to N-th common groups during a blanking period of a frame.

6. The sensing display panel of claim 1, wherein the display substrate further comprises:

a voltage line substantially parallel to the common line and arranged alternately with the common line.

7. The sensing display panel of claim 6, wherein the display substrate comprises:

first to N-th driving electrode patterns, N being an integer greater than one;

first to M-th common electrode patterns, M being an integer greater than one;

first to N-th driving groups comprising at least one common line connected to the first to N-th driving electrode patterns; and

first to N-th common groups disposed between the first to N-th driving groups and comprising at least one voltage line connected to the first to M-th common electrode patterns.

8. The sensing display panel of claim 7,

wherein each of the first to N-th driving electrode patterns is connected to the common line via at least one contact hole, and

wherein each of the first to N-th common electrode patterns is connected to the voltage line via at least one contact hole.

9. The sensing display panel of claim 8,

wherein a common voltage is caused to be applied to the first to N-th driving electrode patterns via the first to N-th driving groups during an active period of a frame, and

wherein a driving signal is caused to be sequentially applied to the first to N-th driving electrode patterns via the first to N-th driving groups during a blanking period of a frame.

10. The sensing display panel of claim 9,

wherein a common voltage is caused to be applied to the first to M-th common electrode patterns via the first to N-th common groups during an active period of a frame, and

wherein the common voltage is caused to be applied to the first to M-th common electrode patterns via the first to N-th common groups during a blanking period of a frame.

11. The sensing display panel of claim 9,

wherein a common voltage is caused to be applied to the first to M-th common electrode patterns via the first to N-th common groups during an active period of a frame, and

a voltage is caused to be blocked from being applied to the first to M-th common electrode patterns during a blanking period of a frame.

12. The sensing display panel of claim 1, wherein the sensor substrate comprises:

first to M-th sensing electrode patterns, and

wherein a direct current voltage exhibiting a predetermined voltage level is caused to be applied to at least some of the first to M-th sensing electrode patterns.