Display having infrared edge illumination and multi-touch sensing function
First Claim
1. A touch-sensing display screen comprising:
- an upper transparent substrate;
a lower substrate opposite the upper substrate including a plurality of gate lines and a plurality of data lines;
an infrared light source configured to illuminate a portion of the upper transparent substrate;
a light converting layer disposed between the upper and lower substrates configured to convert the infrared light received by the upper transparent substrate to visible light;
a pixel area on the lower substrate having a first thin-film transistor configured to activate a pixel electrode; and
a light-sensing thin-film transistor in the pixel area configured to sense the visible light provided by the light converting layer and output a light-sense signal in response thereto,wherein the light-sensing thin-film transistor is formed on the lower substrate to correspond with the light converting layer,wherein the pixel area further comprises a second thin-film transistor in communication with the light-sensing transistor,wherein the first and second thin-film transistors in the same pixel area are simultaneously controlled by a scan signal from a same gate line.
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Accused Products
Abstract
A touch-sensing display screen includes an upper transparent substrate, a lower substrate opposite the upper substrate and an infrared light source configured to illuminate a portion of the upper transparent substrate. A light converting layer is disposed between the upper and lower substrate and is configured to convert the infrared light received by the upper transparent substrate to visible light. A pixel thin-film transistor on the lower substrate is configured to activate a pixel electrode, and a light-sensing thin-film transistor is configured to sense the visible light provided by the light converting layer. A light-sense signal is output in response to activation of the light-sensing thin-film transistor.
16 Citations
22 Claims
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1. A touch-sensing display screen comprising:
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an upper transparent substrate; a lower substrate opposite the upper substrate including a plurality of gate lines and a plurality of data lines; an infrared light source configured to illuminate a portion of the upper transparent substrate; a light converting layer disposed between the upper and lower substrates configured to convert the infrared light received by the upper transparent substrate to visible light; a pixel area on the lower substrate having a first thin-film transistor configured to activate a pixel electrode; and a light-sensing thin-film transistor in the pixel area configured to sense the visible light provided by the light converting layer and output a light-sense signal in response thereto, wherein the light-sensing thin-film transistor is formed on the lower substrate to correspond with the light converting layer, wherein the pixel area further comprises a second thin-film transistor in communication with the light-sensing transistor, wherein the first and second thin-film transistors in the same pixel area are simultaneously controlled by a scan signal from a same gate line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display having a multi-touch sensing function, comprising:
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an infrared light source that radiates an infrared light; and a display panel that includes a first transparent substrate which guides the infrared light, an infrared ray-to-visible ray converting layer formed on the first transparent substrate to convert the infrared light from the first transparent substrate into a visible ray, and an optical sensor located under the first transparent substrate to sense the visible ray, wherein the display panel further includes a second transparent substrate on which the optical sensor is formed, wherein the second transparent substrate includes a plurality of pixel areas defined a plurality of gate lines and a plurality of data lines, a plurality of first thin-film transistors configured to activate a pixel electrode, and a plurality of second thin-film transistors in communication with the optical sensor, wherein the optical sensor is formed on the second transparent substrate to correspond with the infrared ray-to-visible ray converting layer, wherein the first and second thin-film transistors in the same pixel area are simultaneously controlled by a scanning pulse from a same gate line. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of driving a display having a multi-touch sensing function comprising:
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irradiating a first transparent substrate with an infrared light; converting the infrared light reflected from a surface of the first transparent substrate into a visible ray using an infrared ray-to-visible ray converting layer formed on the first transparent substrate; sensing the visible ray using an optical sensor located under the first transparent substrate; irradiating a display panel with light generated by a backlight unit located under the display panel; and displaying a touch image of the surface of the first transparent substrate on the display panel, wherein the display panel comprises a second transparent substrate on which the optical sensor is formed, wherein the second transparent substrate includes a plurality of pixel areas defined a plurality of gate lines and a plurality of data lines, a plurality of first thin-film transistors configured to activate a pixel electrode, and a plurality of second thin-film transistors in communication with the optical sensor, wherein the optical sensor is formed on the second transparent substrate to correspond with the infrared ray-to-visible ray converting layer, wherein the first and second thin-film transistors in the same pixel area are simultaneously controlled by a scanning pulse from a same gate line.
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Specification