TOUCH-CONTROL DISPLAY PANEL AND TOUCH-CONTROL DISPLAY DEVICE

• US 20170010742A1
• Filed: 09/19/2016
• Published: 01/12/2017
• Est. Priority Date: 07/07/2016
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: LIU, LIANG, MA, SHAOLONG, ZHOU, XINGYAO, LU, FENG, YAO, QIJUN
• Granted Patent: US 10,365,752 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• 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 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0414 using force sensing means to determine a position
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch control display panel and a touch control display device are provided. The touch control display panel comprises a substrate having a first extending direction and a second extending direction; and at least one force sensing bridge including a first sensing resistor, a second sensing resistor, a third sensing resistor, and a fourth sensing resistor. The first sensing resistor has a longer extending length in the first extending direction than in the second extending direction. The second sensing resistor has a longer extending length in the second extending direction than in the first extending direction. The third sensing resistor has a longer extending length in the first extending direction than in the second extending direction. The fourth sensing resistor has a longer extending length in the second extending direction than in the first extending direction.

Claims

1. A touch control display panel, comprising:

a substrate having a first extending direction and a second extending direction intersecting the first extending direction; and

at least one force sensing bridge including a first sensing resistor, a second sensing resistor, a third sensing resistor, and a fourth sensing resistor,

wherein a first end of the first sensing resistor and a first end of the fourth sensing resistor are electrically connected to an input terminal of a first power supply, respectively,

a second end of the first sensing resistor and a first end of the second sensing resistor are electrically connected to a first sensing signal measurement terminal, respectively,

a second end of the fourth sensing resistor and a first end of the third sensing resistor are electrically connected to a second sensing signal measurement terminal, respectively, and

a second end of the second sensing resistor and a second end of the third sensing resistor are electrically connected to an input terminal of a second power supply, respectively; and

from the first end to the second end of the first sensing resistor, the first sensing resistor has a longer extending length in the first extending direction than in the second extending direction,

from the first end to the second end of the second sensing resistor, the second sensing resistor has a longer extending length in the second extending direction than in the first extending direction,

from the first end to the second end of the third sensing resistor, the third sensing resistor has a longer extending length in the first extending direction than in the second extending direction, and

from the first end to the second end of the fourth sensing resistor, the fourth sensing resistor has a longer extending length in the second extending direction than in the first extending direction.

2. The touch control touch control display panel according to claim 1, wherein:

the first extending direction is perpendicular to the second extending direction.

3. The touch control touch control display panel according to claim 1, wherein:

the substrate has a rectangular shape;

the first extending direction is along a long side of the rectangular shape;

and the second extending direction is along a short side of the rectangular shape.

4. The touch control display panel according to claim 1, wherein:

the first sensing resistor, the second sensing resistor, the third sensing resistor, and the fourth sensing resistor are made of metals.

5. The touch control display panel according to claim 4, wherein:

the metals include indium tin oxide (ITO).

6. The touch control display panel according to claim 1, wherein:

the first sensing resistor, the second sensing resistor, the third sensing resistor, and the fourth sensing resistor have same initial resistance.

7. The touch control display panel according to claim 6, wherein:

at least one of the first sensing resistor, the second sensing resistor, the third sensing resistor, and the fourth sensing resistor has a folded linear structure.

8. The touch control display panel according to claim 1, wherein:

the first sensing resistor, the second sensing resistor, the third sensing resistor, and the fourth sensing resistor are disposed in a same layer.

9. The touch control display panel according to claim 8, wherein:

the first sensing resistor includes at least two first-sensing-resistor units connected in series;

the second sensing resistor includes at least two second-sensing-resistor units connected in series;

the third sensing resistor includes at least two third-sensing-resistor units connected in series; and

the fourth sensing resistor includes at least two fourth-sensing-resistor units connected in series.

10. The touch control display panel according to claim 9, wherein:

the at least two first-sensing-resistor units connected in series and the at least two second-sensing-resistor units connected in series are alternately arranged, the at least two first-sensing-resistor units connected in series are symmetrical with respect to a first center point, and the at least two second-sensing-resistor units connected in series are symmetrical with respect to the first center point; and

the at least two third-sensing-resistor units connected in series and the at least two fourth-sensing-resistor units connected in series are alternately arranged, the at least two third-sensing-resistor units connected in series are symmetrical with respect to a second center point, and the at least two fourth-sensing-resistor units connected in series are symmetrical with respect to the second center point.

11. The touch control display panel according to claim 8, wherein:

a distance between a first point and a second point is approximately 0.1 mm-5 mm, wherein the first point is the farthest point of the first sensing resistor away from the second sensing resistor, and the second point is the farthest point of the second sensing resistor away from the first sensing resistor; and

a distance between a third point and a fourth point is approximately 0.1 mm-5 mm, wherein the third point is the farthest point of the third sensing resistor away from the fourth sensing resistor, and the fourth point is the farthest point of the fourth sensing resistor away from the third sensing resistor.

12. The touch control display panel according to claim 1, wherein:

the first sensing resistor and the third sensing resistor are disposed in a first layer; and

the second sensing resistor and the fourth sensing resistor are disposed in a second layer different from the first layer.

13. The touch control display panel according to claim 12, wherein:

an orthogonal projection of the first sensing resistor onto the substrate is overlapped with an orthogonal projection of the second sensing resistor onto the substrate; and

an orthogonal projection of the third sensing resistor onto the substrate is overlapped with an orthogonal projection of the fourth sensing resistor onto the substrate.

14. The touch control display panel according to claim 1, further including:

at least two driving lines disposed on the substrate, and electrically connected to the input terminal of the first power source and the input terminal of the second power source, respectively; and

at least two detecting lines disposed on the substrate, and electrically connected to the first sensing signal measurement terminal and the second sensing signal measurement terminal, respectively.

15. The touch control display panel according to claim 1, wherein:

the substrate is an array substrate including a plurality of switches;

or

the substrate is a color film substrate including a plurality of color filters.

16. A touch control display device, comprising:

a touch control display panel, wherein the control display panel comprises;

a substrate having a first extending direction and a second extending direction intersecting the first extending direction;

at least one force sensing bridge including a first sensing resistor, a second sensing resistor, a third sensing resistor, and a fourth sensing resistor,

wherein a first end of the first sensing resistor and a first end of the fourth sensing resistor are electrically connected to an input terminal of a first power supply, respectively,

a second end of the first sensing resistor and a first end of the second sensing resistor are electrically connected to a first sensing signal measurement terminal, respectively,

a second end of the fourth sensing resistor and a first end of the third sensing resistor are electrically connected to a second sensing signal measurement terminal, respectively, and

a second end of the second sensing resistor and a second end of the third sensing resistor are electrically connected to an input terminal of a second power supply, respectively; and

from the first end to the second end of the first sensing resistor, the first sensing resistor has a longer extending length in the first extending direction than in the second extending direction,

from the first end to the second end of the second sensing resistor, the second sensing resistor has a longer extending length in the second extending direction than in the first extending direction,

from the first end to the second end of the third sensing resistor, the third sensing resistor has a longer extending length in the first extending direction than in the second extending direction, and

from the first end to the second end of the fourth sensing resistor, the fourth sensing resistor has a longer extending length in the second extending direction than in the first extending direction.

17. The touch control touch control display panel according to claim 16, wherein:

the first extending direction is perpendicular to the second extending direction.

18. The touch control touch control display panel according to claim 16, wherein:

the substrate has a rectangular shape;

the first extending direction is along a long side of the rectangular shape;

and the second extending direction is along a short side of the rectangular shape.

19. The touch control display panel according to claim 16, wherein:

the first sensing resistor, the second sensing resistor, the third sensing resistor, and the fourth sensing resistor are disposed in a same layer.

20. The touch control display panel according to claim 19, wherein:

a distance between a first point and a second point is approximately 0.1 mm-5 mm, wherein the first point is the farthest point of the first sensing resistor away from the second sensing resistor, and the second point is the farthest point of the second sensing resistor away from the first sensing resistor; and

a distance between a third point and a fourth point is approximately 0.1 mm-5 mm, wherein the third point is the farthest point of the third sensing resistor away from the fourth sensing resistor, and the fourth point is the farthest point of the fourth sensing resistor away from the third sensing resistor.