Sensor substrate and sensing display panel having the same

• US 9,202,949 B2
• Filed: 12/05/2012
• Issued: 12/01/2015
• 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, Nam, Seung-Ho, Kim, Ki-Hyuk
• Primary Examiner(s): CALEY, MICHAEL H
• Application Number:
  US13/705,703
• Publication Number:
  US 20130341651A1
• Time in Patent Office: 1,091 Days
• Field of Search: 345/173, 345/174, 349/12, 178/18.06
• US Class Current: 1/1
• 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 sensor substrate, comprising:

a base substrate;

a color filter layer disposed on the base substrate;

a black matrix pattern disposed on the base substrate;

a sensing electrode pattern comprising a plurality of first unit patterns arranged in association with a first direction and overlapping the black matrix pattern;

a driving electrode pattern comprising a plurality of second unit patterns arranged in association with a second direction and overlapping the black matrix pattern; and

at least one bridge line overlapping the black matrix pattern, the at least one bridge line being connected between at least two of the plurality of first unit patterns or between at least two of the plurality of second unit patterns,

wherein the sensing electrode pattern and the driving electrode pattern are disposed vertically between the color filter layer and the black matrix pattern, and

wherein each of the plurality of first unit patterns or each of the plurality of second unit patterns comprises a mesh defining a plurality of sub-patterns.

2. The sensor substrate of claim 1, further comprising:

an insulating layer disposed on the sensing electrode pattern and the driving electrode pattern; and

at least one contact hole formed in the insulating layer,

wherein the at least one bridge line is, via the at least one contact hole, connected between the at least two adjacent ones of the plurality of first unit patterns or between the at least two adjacent ones of the plurality of second unit patterns.

3. The sensor substrate of claim 1, wherein the mesh comprises a plurality of conductive lines connected to each other.

4. The sensor substrate of claim 1, wherein each of the plurality of first unit patterns and each of the plurality of second unit patterns comprise:

a first portion;

a second portion surrounding the first portion; and

a plurality of lines connected to each other in the second portion and excluded from the first portion.

5. The sensor substrate of claim 1, wherein each of the plurality of first unit patterns and each of the plurality of second unit patterns comprise:

a first portion; and

a second portion surrounding and being spaced apart from the first portion, and

wherein each of the first portion and the second portion comprise a plurality of lines being connected to each other.

6. The sensor substrate of claim 1,

wherein the driving electrode pattern comprises a plurality of electrode rows being connected to one another, each of the plurality of electrode rows comprising at least one of the plurality of first unit patterns, and

wherein the sensing electrode pattern comprises a plurality of electrode columns being connected to one another, each of the plurality of electrode columns comprising at least one of the plurality of second unit patterns.

7. The sensor substrate of claim 1, wherein individual ones of the plurality of first unit patterns and individual ones of the plurality of second unit patterns form respective diamond shapes.

8. The sensor substrate of claim 1, wherein the at least two of the plurality of first unit patterns or at least two of the plurality of second unit patterns are disposed adjacent to one another.

9. The sensor substrate of claim 1, wherein the sensing electrode pattern arranged in association with the first direction is disposed to cross the driving electrode pattern arranged in association with the second direction.

10. The sensor substrate of claim 1, wherein the plurality of first unit patterns and the plurality of second unit patterns are disposed in the same layer as one another.

11. A sensing display panel, comprising:

a display substrate comprising;

a plurality of pixel electrodes, and

a common electrode overlapping the pixel electrodes; and

a sensor substrate comprising;

a color filter layer,

a black matrix pattern disposed on the color filter layer,

a sensing electrode pattern comprising a plurality of first unit patterns arranged in association with a first direction and overlapping the black matrix pattern,

a driving electrode pattern comprising a plurality of second unit patterns arranged in association with a second direction and overlapping the black matrix pattern, and

at least one bridge line overlapping the black matrix pattern, the at least one bridge line being connected between at least two of the plurality of first unit patterns or between at least two of the plurality of the second unit patterns,

wherein the sensing electrode pattern and the driving electrode pattern are disposed vertically between the color filter layer and the black matrix pattern.

12. The sensing display panel of claim 11, wherein each of the plurality of first unit patterns and each of the plurality of second unit patterns comprise a plurality of lines connected to each other.

13. The sensing display panel of claim 11, wherein each of the plurality of first unit patterns and each of the plurality of second unit patterns comprise:

a first portion;

a second portion surrounding the first portion; and

a plurality of lines connected to each other in the second portion and excluded from the first portion.

14. The sensing display panel of claim 11, wherein each of the plurality of first unit patterns and each of the plurality of second unit patterns comprise:

a first portion; and

a second portion surrounding and being spaced apart from the first portion, and

wherein each of the first portion and the second portion comprise a plurality of lines being connected to each other.

15. The sensing display panel of claim 11,

wherein the driving electrode pattern comprises a plurality of electrode rows being connected to one another, each of the plurality of electrode rows comprising at least one of the plurality of first unit patterns, and

wherein the sensing electrode pattern comprises a plurality of electrode columns being connected to one another, each of the plurality of electrode columns comprising at least one of the plurality of second unit patterns.

16. The sensing display panel of claim 15,

wherein the sensor substrate comprises a plurality of driving electrode patterns, and

wherein, in response to a driving signal being applied to both ends of at least one of the plurality of driving electrode patterns, a ground voltage or a direct current voltage exhibiting a predetermined voltage level is caused to be applied to both ends of the remainder of the plurality of driving electrode patterns.

17. The sensing display panel of claim 15,

wherein the sensor substrate comprises a plurality of sensing electrode patterns, and

wherein a ground voltage or a direction current voltage exhibiting a predetermined voltage level is applied to at least some of the plurality of sensing electrode patterns.

18. The sensing display panel of claim 11,

wherein the sensor substrate comprises a plurality of driving electrode patterns, and

wherein, in response to a driving signal being applied to both ends of one of the plurality of driving electrode patterns, a ground voltage or a direct current voltage exhibiting a predetermined voltage level is caused to be applied to the remainder of the plurality of driving electrode patterns.

19. The sensing display panel of claim 11,

wherein the sensor substrate comprises a plurality of sensing electrode patterns, and

wherein a ground voltage or a direct current voltage exhibiting a predetermined voltage level is applied to at least some of the plurality of sensing electrode patterns.

20. The sensing display panel of claim 11, wherein individual ones of the plurality of first unit patterns and individual ones of the plurality of second unit patterns form respective diamond shapes.

21. The sensing display panel of claim 11, wherein the at least two of the plurality of first unit patterns or at least two of the plurality of second unit patterns are disposed adjacent to one another.

22. The sensing display panel of claim 11, wherein the sensing electrode pattern arranged in association with the first direction is disposed to cross the driving electrode pattern arranged in association with the second direction.