Light sensing element, array substrate having the same and liquid crystal display apparatus having the same
First Claim
1. A light sensing element comprising:
- a first electrode receiving an alternating bias voltage;
a control electrode receiving an off voltage; and
a second electrode outputting a light-induced leakage current based on an externally provided light and the bias voltage.
1 Assignment
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Accused Products
Abstract
In a light sensing element having simplified structure, an array substrate having the light sensing element and an LCD apparatus having the light sensing element, the light sensing element includes a first electrode, a control electrode and a second electrode. An alternating bias voltage is applied to the first electrode. An off voltage is applied to the control electrode. The second electrode outputs a light-induced leakage current based on an externally provided light and the bias voltage. Therefore, the array substrate includes one light sensing switching element corresponding to one pixel so that structure of the array substrate is simplified and opening ratio is increased.
57 Citations
27 Claims
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1. A light sensing element comprising:
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a first electrode receiving an alternating bias voltage;
a control electrode receiving an off voltage; and
a second electrode outputting a light-induced leakage current based on an externally provided light and the bias voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light sensing element comprising:
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a first electrode receiving an alternating bias voltage;
a control electrode; and
a second electrode electrically connected to the control electrode, the second electrode outputting a light-induced leakage current based on an externally provided light and the bias voltage. - View Dependent Claims (10, 11)
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12. A light sensing element comprising:
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a first electrode receiving an alternating bias voltage;
a control electrode electrically connected to the first electrode; and
a second electrode outputting a light-induced leakage current based on an externally provided light and the bias voltage. - View Dependent Claims (13, 14)
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15. An array substrate comprising:
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a transparent substrate;
a gate line disposed on the transparent substrate to transmit a gate signal;
a data line disposed on the transparent substrate to transmit a data signal;
a switching element formed in a region defined by the gate and data lines, a gate electrode of the switching element being electrically connected to the gate line, a source electrode of the switching element being electrically connected to the data line;
a read out line disposed on the transparent substrate; and
a light sensing element formed in a region defined by the gate, data and read out lines to include a first electrode receiving an alternating bias voltage, a control electrode receiving an off voltage, and a second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage. - View Dependent Claims (16, 17, 18, 19)
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20. An array substrate comprising:
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a transparent substrate;
a gate line disposed on the transparent substrate to transmit a gate signal;
a data line disposed on the transparent substrate to transmit a data signal;
a switching element formed in a region defined by the gate and data lines, a gate electrode of the switching element being electrically connected to the gate line, a source electrode of the switching electrode being electrically connected to the data line;
a read out line disposed on the transparent substrate; and
a light sensing element formed in a region defined by the gate, data and read out lines to include a first electrode receiving an alternating bias voltage, a control electrode and a second electrode electrically connected to the control electrode, the second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage. - View Dependent Claims (21, 22)
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23. An array substrate comprising:
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a transparent substrate;
a gate line disposed on the transparent substrate to transmit a gate signal;
a data line disposed on the transparent substrate to transmit a data signal;
a switching element formed in a region defined by the gate and data lines, a gate electrode of the switching element being electrically connected to the gate line, a source electrode of the switching element being electrically connected to the data line;
a read out line disposed on the transparent substrate; and
a light sensing element formed in a region defined by the gate, data and read out lines to include a first electrode receiving an alternating bias voltage, a control electrode electrically connected to the first electrode and a second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage. - View Dependent Claims (24)
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25. A liquid crystal display apparatus comprising:
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an upper substrate;
a lower substrate corresponding to the upper substrate to include a light sensing element formed in a region defined by gate, data and read out lines, the light sensing element having a first electrode receiving an alternating bias voltage, a control electrode receiving an off voltage and a second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage; and
a liquid crystal layer interposed between the upper and lower substrates.
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26. A liquid crystal display apparatus comprising:
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an upper substrate;
a lower substrate corresponding to the upper substrate to include a light sensing element formed in a region defined by gate, data and read out lines, the light sensing element having a first electrode receiving an alternating bias voltage, a control electrode and a second electrode electrically connected to the control electrode, the second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage; and
a liquid crystal layer interposed between the upper and lower substrates.
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27. A liquid crystal display apparatus comprising:
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an upper substrate;
a lower substrate corresponding to the upper substrate to include a light sensing element formed in a region defined by gate, data and read out lines, the light sensing element having a first electrode receiving an alternating bias voltage, a control electrode electrically connected to the first electrode and a second electrode outputting a light-induced leakage current to the read out line based on an externally provided light and the bias voltage; and
a liquid crystal layer interposed between the upper and lower substrates.
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Specification