3D module, 3D display device and method for driving 3D module

• US 10,324,558 B2
• Filed: 08/10/2015
• Issued: 06/18/2019
• Est. Priority Date: 02/06/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Li, Changfeng, Dong, Xue, Wang, Haisheng, Liu, Yingming, Yang, Shengji, Ding, Xiaoliang, Zhao, Weijie, Liu, Hongjuan, Liu, Wei, Li, Mubing
• Primary Examiner(s): Awad, Amr A.
• Assistant Examiner(s): Bray, Stephen A
• Application Number:
  US14/907,198
• Publication Number:
  US 20160378240A1
• Time in Patent Office: 1,408 Days
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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 3/0443 using a single layer of sensing electrodes

Abstract

The present disclosure provides a 3D module, a 3D display device and a method for driving the 3D module. The 3D module includes: a first substrate and a second substrate arranged opposite to each other and a beam splitter between the first substrate and the second substrate. The first substrate is arranged at a light-exiting side of the 3D module. The 3D module further includes: a touch module arranged between the first substrate and the beam splitter and including multiple self-capacitive electrodes arranged at an identical layer, and multiple touch signal lines configured to connect the self-capacitive electrodes to a touch detection circuit.

Claims

1. A three-dimensional (3D) module, comprising:

a first substrate arranged at a light-exiting side of the 3D module;

a second substrate arranged opposite to the first substrate;

a beam splitter arranged between the first substrate and the second substrate;

a touch module arranged between the first substrate and the beam splitter and comprising a plurality of self-capacitive electrodes arranged at an identical layer; and

a plurality of touch signal lines configured to connect the self-capacitive electrodes to a touch detection circuit,

wherein the plurality of touch signal lines comprises transparent lines located at a display region of the 3D module and peripheral lines located at a peripheral region of the 3D module, the transparent lines are arranged at a layer different from the self-capacitive electrodes, an insulation layer is arranged between the transparent lines and the self-capacitive electrodes, via-holes are arranged in the insulation layer, and the transparent lines are connected to the self-capacitive electrodes through the via-holes,

wherein the plurality of self-capacitive electrodes are arranged in a matrix form, the transparent lines for a portion of the plurality of self-capacitive electrodes in an identical column or row extend along a first direction to a periphery of the display region, and the transparent lines for the other portion of the self-capacitive electrodes extend along a second direction to a periphery of the display region, the first direction is substantially parallel and opposite to the second direction, each of the transparent lines extending in the first direction overlapping with only a portion of the self-capacitive electrodes among at least a row or a column of the self-capacitive electrodes and each of the transparent lines extending in the second direction overlapping with only a portion of the self-capacitive electrodes among at least one of the row or the column of self-capacitive electrodes, the transparent lines extending to the peripheries of the display region are connected to the peripheral lines located at the peripheral region; and

one or more perforations are arranged in each self-capacitive electrode, and an orthographic projection of each of the transparent lines onto one or more of the self-capacitive electrodes overlaps with respective at least one of the perforations.

2. The 3D module according to claim 1, wherein the plurality of self-capacitive electrodes have an identical size, and the self-capacitive electrodes in two adjacent columns and/or rows are spaced apart from each other at an identical interval.

3. The 3D module according to claim 1, wherein

at least a portion of the at least one perforation in each self-capacitive electrode are located within a region where orthographic projections of the transparent lines onto the self-capacitive electrode are located.

4. The 3D module according to claim 1, wherein the beam splitter comprises:

a first electrode and a second electrode arranged opposite to each other, and a liquid crystal layer or an electrochromic material layer located between the first electrode and the second electrode; and

the first electrode is arranged at a side close to the self-capacitive electrodes, and the second electrode is arranged at a side away from the self-capacitive electrodes.

5. A three-dimensional (3D) display device, comprising a display panel and the 3D module according to claim 1.

6. A method for driving the 3D module according to claim 4, comprising:

applying a first voltage to the self-capacitive electrodes and the first electrode, and applying a second voltage different from the first voltage to the second electrode so as to provide a voltage difference between the first electrode and the second electrode; and

applying a third voltage to the self-capacitive electrodes and simultaneously applying a voltage having an amplitude and a frequency identical to the third voltage to the first electrode and the second electrode, when a touch made by a touch body has been detected so as to enable the amplitude and frequency of the voltage applied to the first electrode to be identical to those of the voltage applied to the self-capacitive electrodes at the same time, and to maintain the voltage difference between the first electrode and the second electrode.

7. The 3D module according to claim 1, wherein the display region comprises a long side and a short side, and the first direction and the second direction are substantially parallel to a direction in which the short side of the display region extends.

8. The 3D module according to claim 1, wherein resistivity of the peripheral lines is smaller than that of the transparent lines.