CN-115129181-B - Touch display screen

CN115129181BCN 115129181 BCN115129181 BCN 115129181BCN-115129181-B

Abstract

The invention provides a touch display screen which comprises a display panel, a touch device, a light receiver, a biosensor and a controller, wherein the touch device is positioned on the light emitting side of the display panel and is provided with a touch surface, the light receiver is used for providing at least positioning light and at least high-energy light, the light receiver is used for detecting the light variation of the positioning light on the touch surface due to touch and determining the position of the touch on the touch surface, the biosensor is used for judging whether an organism approaches to the touch surface, and the controller is used for driving the light emitting component to selectively provide the positioning light and/or the high-energy light to the touch surface according to the judgment of the biosensor. The invention can prevent the user from being negatively influenced by ultraviolet light when in touch operation while providing the ultraviolet sterilization function of the touch panel, and save the power consumption of the touch display screen.

Inventors

JI JINRUI
HUANG PEIWEN
LIU DAWEI

Assignees

明基电通股份有限公司
明基智能科技（上海）有限公司

Dates

Publication Date: 20260508
Application Date: 20210908
Priority Date: 20210329

Claims (5)

1. A touch display screen, the touch display screen comprising: A display panel; the touch device is positioned on the light emitting side of the display panel, and is provided with a touch surface, and the touch surface is provided with a photocatalyst film, and comprises: the light-emitting component is used for providing positioning light and high-energy light; A light receiver for detecting the light variation of the positioning light generated by touching the touch surface and determining the position of the touch on the touch surface; A biosensor for determining whether a living body is approaching the touch surface, and The controller drives the light-emitting component to selectively provide the positioning light and/or the high-energy light to the touch surface according to the judgment of the biosensor, wherein the high-energy light triggers the photocatalyst film to sterilize the touch surface when the high-energy light irradiates the photocatalyst film; The controller modulates the input power applied to the electroluminescent unit according to the judgment of the biosensor, so as to change the wavelength of the light outputted by the electroluminescent unit, and provide the positioning light and the high-energy light; the controller is further configured to control the wavelength modulator to modulate the wavelength of the high-energy light according to the time interval determination that the biological sensor is continuously not near the touch surface.
2. The touch display screen of claim 1, wherein the biosensor determines whether an organism is in proximity to the touch surface by measuring a change in a physical quantity extending outwardly from the touch surface a predetermined safe distance.
3. The touch display screen of claim 2, wherein the biosensor comprises one or more of a proximity sensor, a photometric sensor, a temperature sensor, an image identifier, and an audio sensor.
4. The touch display screen of claim 1, wherein the positioning light has a wavelength greater than the wavelength of the high-energy light; wherein the high-energy light has a wavelength of 200 nm to 400 nm.
5. The touch display screen of claim 1, wherein the controller drives the light emitting element to provide the positioning light to the touch surface and to stop providing the high-energy light to the touch surface when the biosensor determines that the living organism is near the touch surface, and When the biological sensor determines that the organism is not close to the touch surface, the controller drives the light-emitting component to provide the high-energy light to the touch surface.

Description

Touch display screen Technical Field The invention relates to the technical field of display, in particular to a touch display screen. Background With the development of technology nowadays, the application of electronic products has become an indispensable part of life. Among the numerous product categories, electronic products with touch display screens are particularly popular, such products including tablet computers, smartphones, smartwatches, and the like, for example. However, when the touch display screen is operated, the user needs to touch the touch display screen with a finger or repeatedly slide the finger on the touch display screen, so bacteria or viruses are easily generated and accumulated on the touch display screen, which further affects personal hygiene. Therefore, there is a need to design a new touch display screen to overcome the above-mentioned drawbacks. Disclosure of Invention The invention aims to provide a touch display screen, which can prevent a user from being negatively influenced by ultraviolet light when performing touch operation while providing an ultraviolet sterilization function of a touch panel, and save power consumption of the touch display screen. The invention provides a touch display screen, which comprises a display panel, a touch device, a light receiver, a biosensor and a controller, wherein the touch device is positioned on the light emitting side of the display panel and is provided with a touch surface, the light receiver is used for providing positioning light and high-energy light, the light receiver is used for detecting the light variation of the positioning light on the touch surface due to touch and determining the position of the touch on the touch surface, the biosensor is used for determining whether a living body approaches to the touch surface, and the controller is used for driving the light emitting component to selectively provide the positioning light and/or the high-energy light to the touch surface according to the judgment of the biosensor. Preferably, the light emitting component comprises a first light source for providing the positioning light and a second light source for providing the high-energy light. Preferably, the light emitting assembly further comprises a switch element for connecting the first light source and the second light source, wherein the switch element is used for switching on and off the first light source and the second light source according to the judgment of the biosensor by the controller. Preferably, the controller changes the wavelength of the positioning light by controlling the voltage applied to the first light source, or the controller changes the brightness of the positioning light by controlling the current flowing through the first light source. Preferably, the light emitting component comprises a light source and a wavelength modulator for modulating the output wavelength of the light source to provide the positioning light and the high-energy light. Preferably, the wavelength modulator comprises a voltage/current modulator, and the controller modulates the input power applied to the light source according to the judgment of the biosensor, so that the light source changes the output wavelength. Preferably, the biosensor determines whether an organism is approaching the touch surface by measuring a change in a physical quantity extending outward from the touch surface by a predetermined safety distance. Preferably, the biosensor comprises one or more of a proximity sensor, a photometric sensor, a temperature sensor, an image identifier, and an audio sensor. Preferably, the wavelength of the positioning light is greater than that of the high-energy light, wherein the high-energy light has a wavelength of 200 nm to 400 nm. Preferably, the controller drives the light emitting element to provide the positioning light to the touch surface and stops providing the high-energy light to the touch surface when the biological sensor determines that the biological body is close to the touch surface, and drives the light emitting element to provide the high-energy light to the touch surface when the biological sensor determines that the biological body is not close to the touch surface. Compared with the prior art, the touch display screen provided by the invention comprises a display panel, a touch device adopting an optical touch panel, a biosensor and a controller. The touch device comprises a light-emitting component which can provide more than two different wavelengths of light. The light with longer wavelength can be used as the touch positioning light of the optical touch panel, and the high-energy light with shorter wavelength has a sterilization function and can be used for irradiating the touch surface of the optical touch panel. And whether an organism approaches the touch surface is judged by the biosensor, and then the controller selectively starts and stops the light-emitting unit in the light-emitting