Substrate, display device and driving method thereof, and touch control display system

• US 10,386,958 B2
• Filed: 11/22/2017
• Issued: 08/20/2019
• Est. Priority Date: 04/13/2017
• Status: Expired due to Fees

• Current Assignee: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Xu, Jiawei, Zhang, Lei, Kuo, Tsung Chieh, Li, Baoran, Wang, Qingpu
• Primary Examiner(s): Yodichkas, Aneeta
• Application Number:
  US15/821,356
• Publication Number:
  US 20180300007A1
• Time in Patent Office: 636 Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• 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 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 3/03542 Light pens for emitting or receiving light
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/042 by opto-electronic means
• 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

Abstract

A display device includes a substrate. The substrate includes a substratum. The substratum includes a main touch control area which includes a plurality of first touch control electrodes and a plurality of second touch control electrodes that are insulated from each other and intersect with each other. A first dummy electrode is disposed between the adjacent first touch control electrodes, and is electrically connected to the first touch control electrodes which are adjacent to the first dummy electrode. A second dummy electrode is disposed between the adjacent second touch control electrodes, and is electrically connected to the second touch control electrodes which are adjacent to the second dummy electrode. The material of the first dummy electrode and the second dummy electrode is photosensitive resistive material that is sensitive to light of a specific wavelength band, and both the first dummy electrode and the second dummy electrode are transparent.

Claims

1. A substrate, comprising a substratum, the substratum including a main touch control area, the main touch control area being provided with a touch control structure, wherein,

the touch control structure includes a plurality of first touch control electrodes and a plurality of second touch control electrodes that are insulated from each other and intersect with each other;

a first dummy electrode is further disposed between the adjacent first touch control electrodes of the plurality of first touch control electrodes, and the first dummy electrode is electrically connected to the first touch control electrodes of the plurality of first touch control electrodes which are adjacent to the first dummy electrode;

a second dummy electrode is further disposed between the adjacent second touch control electrodes of the plurality of second touch control electrodes, and the second dummy electrode is electrically connected to the second touch control electrodes of the plurality of second touch control electrodes which are adjacent to the second dummy electrode,

the material of the first dummy electrode and the second dummy electrode is photosensitive resistive material that is sensitive to light of a specific wavelength band, and both the first dummy electrode and the second dummy electrode are transparent.

2. The substrate according to claim 1, wherein, each of the plurality of first touch control electrodes and each of the plurality of second touch control electrodes are of a grid structure, and both the material of the plurality of first touch control electrodes and the a plurality of second touch control electrodes are metal material.

3. The substrate according to claim 2, wherein, both the first dummy electrode and the second dummy electrode are of a grid structure.

4. The substrate according to claim 1, wherein, both the material of the first dummy electrode and the second dummy electrode are photosensitive resistive material that is sensitive to visible light or infrared light.

5. The substrate according to claim 1, wherein, the substratum further includes a wiring area;

the wiring area is provided with a light-shielding layer, a plurality of first wires and a plurality of second wires located at a side of the light-shielding layer away from the substratum, wherein, each of the plurality of first touch control electrodes is electrically connected to one or more first wires of the plurality of first wires, and each of the plurality of second touch control electrodes is electrically connected to one or more second wires of the second wires.

6. The substrate according to claim 5, wherein, the plurality of first wires and the plurality of first touch control electrodes are formed in synchronization, and both the material of the plurality of first wires and the plurality of first touch control electrodes are metal material;

the plurality of second wires and the plurality of second touch control electrodes are formed in synchronization, and both the material of the plurality of second wires and the plurality of second touch control electrodes are metal material.

7. The substrate according to claim 6, wherein, the wiring area is further provided with a first ground wire and a second ground wire, wherein,

the first ground wire is formed in synchronization with the plurality of first wires, and the second ground wire is formed in synchronization with the plurality of second wires;

the first ground wire is disposed at the periphery of the plurality of first touch control electrodes, and the second ground wire is disposed at the periphery of the plurality of second touch control electrodes.

8. The substrate according to claim 5, wherein, the substrate further comprises a first OC layer and a second OC layer disposed on the main touch control area and the wiring area, wherein,

the first OC layer is disposed between the plurality of first touch control electrodes and the plurality of second touch control electrodes, and between the first dummy electrode and the second dummy electrode;

the second OC layer is disposed on a side of the touch structure away from the substratum, a side of the plurality of first wires away from the substratum and a side of the plurality of second wires away from the substratum.

9. A display device, comprising the substrate according to claim 1.

10. A touch control display system, comprising the display device according to claim 9, and further comprising a laser pen;

the laser pen is configured to emit light of a specific wavelength band with certain intensity when the laser pen is turned on, so that when the light emitted by the laser pen is incident on the display device, the first dummy electrode and the second dummy electrode located at a position of the display device on which the light is incident transform into conductors.

11. A driving method of the display device according to claim 9, comprising:

a touch control stage, during the touch stage,

in the mode of a touch-type capacitive touch control mode, driving signals are applied to the plurality of first touch control electrodes row by row, the plurality of second touch control electrodes receive touch control sensing signals, and a touch control position is determined according to the changes of the touch control sensing signals of the plurality of second touch control electrodes and the plurality of first touch control electrodes to which the driving signals are applied;

in a remote touch control mode, the plurality of first touch control electrodes and the plurality of second touch control electrodes receive touch control sensing signals, and a touch control position is determined according to the changes of the touch control sensing signals between the adjacent first touch control electrodes of the plurality of first touch control electrodes and the changes of signals between the adjacent second touch control electrodes of the plurality of second touch control electrodes.

12. The driving method according to claim 11, wherein, the driving method further comprising displaying a mode selection interface for user to select from, and the mode selection interface includes two options:

touch-type capacitive touch control mode and remote touch control mode.