Image display system with light pen
First Claim
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1. A data input device interfacing with an image display device using light, comprising:
- a body including a detector; and
a light converting part disposed at a selected portion of the body, the light converting part receiving image light provided from the image display device and converting the image light into first sensing light detected by the image display device,wherein the detector detects an amount of the image light arriving at the light converting part and generates a detect signal in response to the detected amount of the light; and
wherein the light converting part provides a second sensing light to the image display device when the detect signal is less than a reference data.
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Abstract
An image display system includes a light pen to generate light to input data, and a display panel to display images in response to the light provided from the light pen. The display panel includes a first substrate on which pixel electrodes are formed, a second substrate on which a common electrode are formed, and a photo-sensor formed on the first substrate. The photo-sensor detects the light provided from the light pen to generate a light detect signal. The image display system also includes a driving module to provide new image data to the display panel to display new images in response to the light detect signal from the photo-sensor.
125 Citations
29 Claims
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1. A data input device interfacing with an image display device using light, comprising:
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a body including a detector; and a light converting part disposed at a selected portion of the body, the light converting part receiving image light provided from the image display device and converting the image light into first sensing light detected by the image display device, wherein the detector detects an amount of the image light arriving at the light converting part and generates a detect signal in response to the detected amount of the light; and wherein the light converting part provides a second sensing light to the image display device when the detect signal is less than a reference data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display system to display images, comprising:
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a display panel including; a first substrate on which first electrodes are formed; a second substrate on which a second electrode is formed; and a liquid crystal layer disposed between the first and second substrates, optical properties of the liquid crystal layer varying in association with changes of electric field formed between the first and second electrodes; and a data input device interfacing with the display panel using light, the data input device including a light converting part receiving image light provided from the display panel, and converting the image light into first sensing light detected by the display panel; and a detector detecting an amount of the image light arriving at the light converting part, and generating a detect signal in response to the detected amount of the light; wherein the light converting part provides a second sensing light to the image display device when the detect signal is less than a reference data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification