Electromagnetic touch structure, side-in backlight display module and display

Abstract

The invention discloses an electromagnetic touch structure, a side-in backlight display module and a display. The electromagnetic touch structure includes a frame structure and an electromagnetic screen structure disposed on the frame structure. The frame structure includes a tabular metal back plate and a side frame structure annularly arranged on the peripheral edge of the metal back plate. Theelectromagnetic screen structure includes a light guide plate and an electromagnetic film stacked between the metal back plate and the frame structure and a permanent magnet structure disposed on themetal back plate. The permanent magnet structure is located inside the frame structure, the permanent magnet structure is located between the electromagnetic film and the metal back plate, and the electromagnetic film is disposed above or below the light guide plate. By means of the technical scheme, electromagnetic signals shielded by the metal back plate can be strengthened, and touch or writingsignals can be normally identified.

Description

technical field [0001] The present invention relates to the technical field of display devices, in particular to an electromagnetic touch structure, a side-entry backlight display module and a display. Background technique [0002] In traditional technology, electromagnetic touch technology is applied to large-size touch all-in-one machines (above 40 inches), especially when the display module adopts a side-type backlight module design, due to the metal backlight of the display module The board is close to the electromagnetic antenna module, so that when electromagnetic writing is performed, the electromagnetic signal will be partially shielded by the metal backplane, resulting in a decrease in the magnetic flux of the electromagnetic coil of the electromagnetic antenna module, which will make it difficult to recognize the writing signal, which will make the whole machine When writing or controlling with the electromagnetic writing pen, there will be problems such as disconn...

AI Technical Summary

Problems solved by technology

[0002] In traditional technology, electromagnetic touch technology is applied to large-size touch all-in-one machines (above 40 inches), especially when the display module adopts a side-type backlight module design, due to the metal backlight of the display module The board is close to the electromagnetic antenna module, so that when electromagnetic writing is performed, the electromagnetic signal will be partially shielded by the metal backplane, resulting in a decrease in the magnetic flux of the electromagnetic coil of the electromagnetic antenna module, which will make it difficult to recognize the writing signal, which will make the whole machine When writing or controlling with an electromagnetic writing pen, there will be problems such as disconnection and failure to draw lines, which will cause the whole machine to fail to work normally.

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