TOUCH SCREEN PANEL TYPE LIQUID CRYSTAL DISPLAY
First Claim
1. A touch screen panel type liquid crystal display, comprising:
- an upper substrate comprising a first insulating substrate, a transparent conductive layer on the first insulating substrate, and a first polarizer on the transparent conductive layer;
a lower substrate comprising a second insulating substrate, a second polarizer on the second insulating substrate, and a thin film transistor layer, the second insulating substrate being between the thin film transistor layer and the second polarizer;
a liquid crystal layer between the upper substrate and the lower substrate; and
a signal detection unit to detect a contact point of a position signal input unit when the position signal input unit, which contacts the first polarizer, is capacitively coupled with the transparent conductive layer.
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Abstract
A liquid crystal display includes an upper substrate, a lower substrate, and a liquid crystal layer interposed between the upper substrate and the lower substrate. The upper substrate includes a first insulating substrate, a transparent conductive layer on the first insulating substrate, and a first polarizer on the transparent conductive layer. The lower substrate includes a second insulating substrate, a second polarizer on the second insulating substrate, and a thin film transistor layer. The second insulating substrate is between the thin film transistor layer and the second polarizer. The transparent conductive layer allows an electric field to be formed on the first polarizer, so that a position signal input unit, which contacts the first polarizer, is capacitively coupled with the transparent conductive layer.
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Citations
20 Claims
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1. A touch screen panel type liquid crystal display, comprising:
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an upper substrate comprising a first insulating substrate, a transparent conductive layer on the first insulating substrate, and a first polarizer on the transparent conductive layer; a lower substrate comprising a second insulating substrate, a second polarizer on the second insulating substrate, and a thin film transistor layer, the second insulating substrate being between the thin film transistor layer and the second polarizer; a liquid crystal layer between the upper substrate and the lower substrate; and a signal detection unit to detect a contact point of a position signal input unit when the position signal input unit, which contacts the first polarizer, is capacitively coupled with the transparent conductive layer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch screen panel type liquid crystal display, comprising:
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an upper substrate comprising a first insulating substrate, a first polarizer on the first insulating substrate, and a transparent conductive layer, the first insulating substrate being between the transparent conductive layer and the first polarizer; a lower substrate comprising a second insulating substrate, a second polarizer on the second insulating substrate, and a thin film transistor layer, the second insulating substrate being between the thin film transistor layer and the second polarizer; a liquid crystal layer between the upper substrate and the lower substrate; and a signal detection unit to detect a contact point of a position signal input unit when the position signal input unit, which contacts the first polarizer, is capacitively coupled with the transparent conductive layer. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A touch screen panel type liquid crystal display, comprising:
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a liquid crystal display panel; a transparent polymer layer on the liquid crystal display panel; a transparent conductive layer on the transparent polymer layer; an overcoat layer on the transparent conductive layer, the overcoat layer comprising a transparent insulating material; and a signal detection unit to detect a contact point of a position signal input unit when the position signal input unit, which contacts the overcoat layer, is capacitively coupled with the transparent conductive layer. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification