Active pen for touch display screen, touch display screen and touch control input system

Patent metadata

Field	Value
Publication number	US-9965054-B2
Application number	US-201514802101-A
Country	US
Kind code	B2
Filing date	Jul 17, 2015
Priority date	Dec 30, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

The present disclosure discloses an active pen for a touch display screen, a touch display screen and a touch control input system, to improve human-machine interaction accuracy of operating the touch display screen with the active pen by a user. The active pen for the touch display screen comprises a transparent elastic pen point, an optical receiver and an excitation signal emitting apparatus, wherein the contact area between the transparent elastic pen point and the touch display screen is increased with an increase in an operating force, the optical receiver is configured to receive detection light which comes from the touch display screen and penetrates through the transparent elastic pen point, meanwhile, the excitation signal emitting apparatus is in signal connection with the optical receiver, so as to emit an excitation signal of a corresponding intensity to the touch display screen in accordance with the intensity of the detection light received by the optical receiver.

First claim

The invention claimed is:

1. A touch display screen comprising:
a transparent cover plate having a surface; and
a plurality of detection light emitters arranged on at least one side edge of the transparent cover plate;
wherein detection light emitted by the detection light emitters enters the transparent cover plate at an angle based on the refractive index of the transparent cover plate and the refractive index of a transparent elastic pen point of an active pen for use with the touch display screen; and
wherein the detection light emitters are embedded in the transparent cover plate.

2. The touch display screen according to claim 1 , wherein the detection light is selected from the group consisting of infrared light, ultraviolet light, and far-infrared light.

3. The touch display screen according to claim 2 , wherein the plurality of detection light emitters are uniformly distributed along the at least one side edge of the transparent cover plate.

4. The touch display screen according to claim 3 , wherein said touch display screen is an embedded type touch display screen or an external-mounting type touch display screen.

5. The touch display screen according to claim 1 , wherein the plurality of detection light emitters are uniformly distributed along the at least one side edge of the transparent cover plate.

6. The touch display screen according to claim 5 , wherein said touch display screen is an embedded type touch display screen or an external-mounting type touch display screen.

7. A touch control input system comprising:
a touch display screen comprising:
a transparent cover plate having a surface; and
a plurality of detection light emitters arranged on at least one side edge of the transparent cover plate;
wherein detection light emitted by the detection light emitters enters the transparent cover plate at an angle based on the refractive index of the transparent cover plate and the refractive index of a transparent elastic pen point of an active pen for use with the touch display screen;
wherein the detection light emitters are embedded in the transparent cover plate; and

an active pen comprising:
a transparent elastic pen point;
an optical receiver; and
an excitation signal emitting apparatus;

wherein the contact area between the transparent elastic pen point and the touch display screen is increased with an increase in an operating force;
wherein the optical receiver is configured to receive detection light from the touch display screen passing through the transparent elastic pen point; and
wherein the excitation signal emitting apparatus emits an excitation signal with an intensity corresponding to an intensity of the detection light received by the optical receiver, the excitation signal being configured to change an capacitance at a touch point between said transparent elastic pen point and said touch display screen.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Sha Jin

Classifications

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F3/0421

  by interrupting or reflecting a light beam, e.g. optical touch-screen · CPC title

• G06F3/0414

  using force sensing means to determine a position · CPC title

• G06F3/042

  by opto-electronic means · CPC title