US-20260127986-A1 - MAGNETO-INDUCTIVE DISPLAY PANEL AND MAGNETO-INDUCTIVE DISPLAY DEVICE USING THE SAME

US20260127986A1US 20260127986 A1US20260127986 A1US 20260127986A1US-20260127986-A1

Abstract

A magneto-inductive display panel includes: a substrate; a circuit carrier board disposed on the substrate; light-emitting units being disposed on the circuit carrier board and outputting display light; and magnetic sensors, which are disposed on the circuit carrier board and sense magnetic field characteristics of a magnet located around the magnetic sensors to generate magnetic signals, so that state information of the magnet can be determined according to the magnetic signals, thereby achieving a display touch function. This disclosure requires minimal additional steps in manufacturing integration, and enables touch operations without panel contact, while also resolving issues caused by moisture affecting touch performance.

Inventors

Chao-Yuan Chen

Assignees

Exbri Technology Inc.

Dates

Publication Date: 20260507
Application Date: 20250825
Priority Date: 20241104

Claims (20)

1 . A magneto-inductive display panel, comprising: a substrate; a circuit carrier board disposed on the substrate; light-emitting units being disposed on the circuit carrier board and outputting display light; and magnetic sensors, which are disposed on the circuit carrier board and sense magnetic field characteristics of a magnet located around the magnetic sensors to generate magnetic signals, so that state information of the magnet can be determined according to the magnetic signals.
2 . The magneto-inductive display panel according to claim 1 , further comprising a protective cover plate disposed above the light-emitting units and the magnetic sensors, wherein the magnet is disposed on or above the protective cover plate.
3 . The magneto-inductive display panel according to claim 2 , further comprising: a reflective sheet, wherein the magnetic sensors, the circuit carrier board and the light-emitting units are disposed between the reflective sheet and the substrate, the substrate is a metallic backing plate, the reflective sheet has through holes, and the display light passes through each of the through holes.
4 . The magneto-inductive display panel according to claim 3 , further comprising: a lower optical film disposed above the reflective sheet; a liquid crystal display layer disposed above the lower optical film; and an upper optical film disposed above the liquid crystal display layer and below the protective cover plate.
5 . The magneto-inductive display panel according to claim 1 , wherein the magnet is disposed below or beside the magnetic sensors.
6 . The magneto-inductive display panel according to claim 1 , wherein the circuit carrier board comprises: longitudinal circuit boards, wherein the light-emitting units and the magnetic sensors are disposed on the longitudinal circuit boards; transversal circuit boards electrically connected to the longitudinal circuit boards; and a control board being electrically connected to the transversal circuit boards and controlling the light-emitting units and the magnetic sensors to operate.
7 . The magneto-inductive display panel according to claim 1 , wherein the substrate comprises a ferroelectric material, the substrate has through holes respectively disposed below the magnetic sensors, and each of the through holes is greater than one fifteenth of a gap between adjacent two of the magnetic sensors.
8 . The magneto-inductive display panel according to claim 1 , further comprising a processor, which is electrically connected to the magnetic sensors, and determines, according to the magnetic signals, the state information of the magnet to generate an operation signal.
9 . A magneto-inductive display device, comprising: the magneto-inductive display panel according to claim 8 ; and a first operation component comprising a body, and the magnet disposed on one end of the body.
10 . The magneto-inductive display device according to claim 9 , wherein the first operation component further comprises a second magnet disposed on the other end of the body, and the second magnet and the magnet have different magnetic flux characteristics.
11 . The magneto-inductive display device according to claim 10 , wherein a distance between the magnet and the second magnet is greater than one-half of a distance between adjacent two of the magnetic sensors.
12 . The magneto-inductive display device according to claim 10 , wherein the magnetic sensors sense magnetic field characteristics of the second magnet to generate second magnetic signals, and the processor determines, according to the second magnetic signals, second state information of the magnet to generate a second operation signal.
13 . The magneto-inductive display device according to claim 12 , wherein the body is substantially parallel to the circuit carrier board, so that the magnet and the second magnet are at substantially a same distance from the circuit carrier board, and when the body is rotated substantially parallel to the circuit carrier board, the processor causes rotating or zooming of a screen on the magneto-inductive display panel according to the operation signal and the second operation signal.
14 . The magneto-inductive display device according to claim 12 , wherein the body is substantially parallel to the circuit carrier board, and is moved in a direction toward or away from the circuit carrier board, and the processor causes zooming of a screen on the magneto-inductive display panel according to the operation signal and the second operation signal.
15 . The magneto-inductive display device according to claim 12 , wherein the body is moved substantially parallel to the circuit carrier board, the processor according to the operation signal and the second operation signal causes panning of a screen on the magneto-inductive display panel.
16 . The magneto-inductive display device according to claim 10 , further comprising: a second operation component comprising a second body, and a third magnet and a fourth magnet respectively disposed on two ends of the second body, wherein the magnet, the second magnet, the third magnet and the fourth magnet have different magnetic flux characteristics, and the magnetic sensors respectively sense the magnetic field characteristics of the third magnet and the fourth magnet and generate a third operation signal and a fourth operation signal.
17 . The magneto-inductive display device according to claim 16 , wherein the processor causes rotating of a screen on the magneto-inductive display panel according to the operation signal and the third operation signal representing that the magnet and the third magnet remain stationary above the circuit carrier board for a period exceeding a predetermined time and then constitute a rotation behavior.
18 . The magneto-inductive display device according to claim 16 , wherein the processor causes zooming-out of a screen on the magneto-inductive display panel according to the operation signal and the third operation signal representing that the magnet and the third magnet remain stationary above the circuit carrier board for a period exceeding a predetermined time and then approach each other.
19 . The magneto-inductive display device according to claim 16 , wherein the processor causes zooming-in of a screen on the magneto-inductive display panel according to the operation signal and the third operation signal representing that the magnet and the third magnet remain stationary above the circuit carrier board for a period exceeding a predetermined time and then move away from each other.
20 . The magneto-inductive display device according to claim 16 , wherein the processor causes a specific function according to a condition representing that the magnet and the third magnet respectively remain stationary above and below the circuit carrier board.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority of No. 202411559444.9 filed in China on November 4, 2024 under 35 USC 119, the entire content of which is hereby incorporated by reference. FIELD OF THE INVENTION This disclosure relates to a magneto-inductive display panel and a magneto-inductive display device using the same, and more particularly to a magneto-inductive display panel having magnetic sensors and light-emitting units disposed on a circuit carrier board to achieve touch-sensing and light-emitting display functions, and a magneto-inductive display device using the same. DESCRIPTION OF RELATED ART In terms of touch sensing, touch panels have undergone multiple evolutions from the initial simple single-point touch to today's multi-touch and high-precision touch. Technology has continuously advanced, evolving from resistive touch panels to capacitive touch panels. Most of existing products adopt the capacitive touch panel, which works according to the conductive property of the human skin. When a finger touches a screen, the electric field on the screen changes, allowing the touch position to be detected. However, the capacitive touch technology has high requirements for electro-conductivity, so the finger or a dedicated stylus needs to directly contact the panel. When liquid is present on the panel or the finger is wet, poor touch performance often occurs. In addition, the capacitive touch panel mainly includes a substrate, an electro-conductive layer, an insulating layer, a protection layer and sensing electrodes stacked sequentially from bottom to top. Numerous components are needed, and the manufacturing cost is high. When the capacitive touch panel is integrated with a display, the display performance may be affected. Therefore, how to provide a touch display device that overcomes these problems is the issue to be solved by this disclosure. SUMMARY OF THE INVENTION It is therefore an objective of this disclosure to provide a magneto-inductive display panel having magnetic sensors and light-emitting units disposed on a circuit carrier board to achieve touch sensing and light-emitting display functions, and a magneto-inductive display device using the same. An embodiment of this disclosure requires minimal additional steps in manufacturing integration, and enables touch operations without panel contact, while also resolving issues caused by moisture affecting touch performance. To achieve the above-identified objective, this disclosure provides a magneto-inductive display panel including: a substrate; a circuit carrier board disposed on the substrate; light-emitting units being disposed on the circuit carrier board and outputting display light; and magnetic sensors, which are disposed on the circuit carrier board and sense magnetic field characteristics of a magnet located around the magnetic sensors to generate magnetic signals, so that state information of the magnet can be determined according to the magnetic signals. Preferably, the magneto-inductive display panel further includes a protective cover plate disposed above the light-emitting units and the magnetic sensors, wherein the magnet is disposed on or above the protective cover plate. Preferably, the magneto-inductive display panel further includes: a reflective sheet, wherein the magnetic sensors, the circuit carrier board and the light-emitting units are disposed between the reflective sheet and the substrate, the substrate is a metallic backing plate, the reflective sheet has through holes, and the display light passes through each of the through holes. Preferably, the magneto-inductive display panel further includes: a lower optical film disposed above the reflective sheet; a liquid crystal display layer disposed above the lower optical film; and an upper optical film disposed above the liquid crystal display layer and below the protective cover plate Preferably, the magnet is disposed below or beside the magnetic sensors. Preferably, the circuit carrier board includes: longitudinal circuit boards, wherein the light-emitting units and the magnetic sensors are disposed on the longitudinal circuit boards; transversal circuit boards electrically connected to the longitudinal circuit boards; and a control board being electrically connected to the transversal circuit boards and controlling the light-emitting units and the magnetic sensors to operate. Preferably, the substrate includes a ferroelectric material, the substrate has through holes respectively disposed below the magnetic sensors, and each of the through holes is greater than one fifteenth of a gap between adjacent two of the magnetic sensors Preferably, the magneto-inductive display panel further includes a processor, which is electrically connected to the magnetic sensors, and determines, according to the magnetic signals, the state information of the magnet to generate an operation signal. This disclosure provides a magneto-inductive display device,