Touch display apparatus

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
The touch display device uses a light guide plate and infrared technology to recognize input objects adjacent to the display surface, overcoming the need for direct contact, thus improving user interaction flexibility.

KR102999370B1Active Publication Date: 2026-08-03SAMSUNG ELECTRONICS CO LTD

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Patent Information

Application Number: KR1020210105080
Authority / Receiving Office: KR · KR
Patent Type: Patents
Current Assignee / Owner
Filing Date: 2021-08-10
Publication Date: 2026-08-03
Estimated Expiration: 2041-08-10

Application Information

Patent Timeline

10 Aug 2021

Application

KR1020210105080

03 Aug 2026

Publication

KR102999370B1

IPC: G06F3/042; G06F3/041; H04N23/00

CPC: G06F3/0425; G06F3/0416; G06F3/0421; H04N23/57; H04N23/00; G06F3/042; G06F3/041; G06F2203/04101

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Application Domain

Input/output processes for data processing

Technology Topics

Light guide Display device

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AI Technical Summary

Technical Problem

Conventional touch panels require direct contact with the display surface for operation, limiting user interaction.

Method used

A touch display device that utilizes a light guide plate, infrared light sources, and cameras to detect input objects adjacent to the display surface by capturing infrared light, allowing for spatial touch recognition.

Benefits of technology

Enables user interaction without direct contact, enhancing user experience and interaction flexibility.

✦ Generated by Eureka AI based on patent content.

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Abstract

A touch display device according to one aspect of the present disclosure comprises: a display panel including a display surface; a light guide plate installed on the upper side of the display surface of the display panel and formed to emit light incident on one side to the upper surface; a first light source array including a plurality of infrared light sources installed on one side of the light guide plate and emitting infrared light to one side of the light guide plate; a camera installed on at least one side of the first light source array and formed to capture infrared light emitted through the entire area of the upper surface of the light guide plate; and a processor that recognizes the coordinates of an input object adjacent to the upper surface of the light guide plate using an infrared image captured by the camera.

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