LIGHT-SENSING APPARATUSES, METHODS OF DRIVING THE LIGHT-SENSING APPARATUSES, AND OPTICAL TOUCH SCREEN APPARATUSES INCLUDING THE LIGHT-SENSING APPARATUSES
First Claim
1. A light-sensing apparatus, comprising:
- a light-sensing pixel array including a plurality of light-sensing pixels in a plurality of rows and a plurality of columns, each of the light-sensing pixels including a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from the light sensor transistor; and
a plurality of gate lines configured to apply a gate voltage to the light-sensing pixels, a gate of the light sensor transistor in a first row of the plurality of rows being connected to a gate line in a second row of the plurality of rows.
1 Assignment
0 Petitions
Accused Products
Abstract
A light-sensing apparatus in which a light sensor transistor in a light-sensing pixel is formed of an oxide semiconductor transistor for sensing light, a method of driving the light-sensing apparatus, and an optical touch screen apparatus including the light-sensing apparatus. The light-sensing apparatus includes a light-sensing pixel array having a plurality of light-sensing pixels arranged in rows and columns, and a plurality of gate lines which are arranged in a row direction and respectively provide a gate voltage to the light-sensing pixel. Each of the light-sensing pixels includes a light sensor transistor for sensing light and a switch transistor for outputting a light-sensing signal from the light sensor transistor, and gates of the light sensor transistors of the light-sensing pixels arranged in an arbitrary row are connected to a gate line arranged in a row previous or next to the arbitrary row.
-
Citations
46 Claims
-
1. A light-sensing apparatus, comprising:
-
a light-sensing pixel array including a plurality of light-sensing pixels in a plurality of rows and a plurality of columns, each of the light-sensing pixels including a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from the light sensor transistor; and a plurality of gate lines configured to apply a gate voltage to the light-sensing pixels, a gate of the light sensor transistor in a first row of the plurality of rows being connected to a gate line in a second row of the plurality of rows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An optical touch screen apparatus, comprising:
-
a pixel array including a plurality of display pixels in a plurality of rows and columns, each of the display pixels including a display cell and a first switch transistor configured to turn the display cell ON or OFF, and at least one light-sensing pixel in the plurality of rows and the plurality of columns, the light-sensing pixel including a light sensor transistor configured to sense light and a second switch transistor configured to output a light-sensing signal from the light sensor transistor; and a plurality of gate lines extending in a row direction and configured to apply a gate voltage to the display pixels and the light-sensing pixel, a gate of the light sensor transistor in a first row of the plurality of rows being connected to a gate line in a second row of the plurality of rows. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. An optical touch screen apparatus, comprising:
-
a pixel array including a plurality of display pixels in a plurality of rows and columns, each of the display pixels including a display cell and a first switch transistor configured to turn the display cell ON or OFF, and at least one light-sensing pixel in the plurality of rows and the plurality of columns, the light-sensing pixel including a light sensor transistor configured to sense light, and second and third switch transistors each configured to output a light-sensing signal from the light sensor transistor; and a plurality of gate lines extending in a row direction and configured to apply a gate voltage to the display pixels and the light-sensing pixel, a gate of the light sensor transistor in a first row of the plurality of rows being connected to a gate line in a second row of the plurality of rows. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
33. A method of operating a light-sensing apparatus, the method comprising:
-
applying a high voltage to gates of a plurality of switch transistors of light-sensing pixels in a first row of a light-sensing pixel array via a first gate line of the first row, and a low voltage to gates of a plurality of light sensor transistors of the light-sensing pixels in the first row via a second gate line of a second row and to gates of switch transistors of light-sensing pixels in rows of the light-sensing pixel array other than the first row; and applying the high voltage to the gates of the plurality of light-sensor transistors in the first row via the second gate line and to gates of a plurality of switch transistors of light-sensing pixels in the second row via the second gate line, and the low voltage to gates of switch transistors of light-sensing pixels in rows of the light-sensing pixel array other than the second row. - View Dependent Claims (34, 35, 36, 37, 38)
-
-
39. An optical touch screen pixel array, comprising:
-
first and second switching transistors in a first row; a first light sensor transistor in a second row; and a first gate line connected to the first and second switching transistors, and to the first light sensor transistor. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
-
Specification