Touch-control pixel driving circuit, touch-control pixel driving method, array substrate and liquid crystal display (LCD) device
First Claim
1. A touch-control pixel driving method applied to a touch-control pixel driving circuit, the touch-control pixel driving circuit comprising a pixel electrode, a transmissive common electrode, a reflective common electrode, a gate line, a reset signal line, a reset control line, a read control line, a dual-purpose data line, a first switching transistor, a second switching transistor, an amplifying transistor, a third switching transistor and a coupling capacitor, wherein a first end of the first switching transistor is connected to the pixel electrode;
- a second end of the first switching transistor is connected to the dual-purpose data line;
a control end of the first switching transistor is connected to the gate line;
a first end of the second switching transistor is connected to the reflective common electrode;
a second end of the second switching transistor is connected to the reset signal line;
a control end of the second switching transistor is connected to the reset control line;
a first end of the amplifying transistor is connected to the reset signal line;
a control end of the amplifying transistor is connected to the reflective common electrode;
a first end of the third switching transistor is connected to a second end of the amplifying transistor;
a second end of the third switching transistor is directly connected to the dual-purpose data line;
a control end of the third switching transistor is directly connected to the read control line;
both ends of the coupling capacitor are respectively connected to the reflective common electrode and the reset signal line; and
the amplifying transistor is a P-type transistor,the touch-control pixel driving method comprising;
a first stage, in which the gate line provides an ON signal to switch on the first switching transistor;
the dual-purpose data line provides a data signal to the pixel electrode via the first switching transistor;
the reset control line provides an ON signal to switch on the second switching transistor;
the reset signal line provides a common electrode voltage to the reflective common electrode via the second switching transistor; and
the read control line provides an OFF signal to switch off the third switching transistor; and
a second stage, in which the gate line provides an OFF signal to switch off the first switching transistor;
the reset control line provides an OFF signal to switch off the second switching transistor;
the read control line provides an ON signal to switch on the third switching transistor; and
when the reflective common electrode detects finger touch, a voltage of the reflective common electrode is reduced in such a way that the amplifying transistor is switched on, and the common electrode voltage provided by the reset signal line is amplified into a touch signal by the amplifying transistor and provided to the dual-purpose data line via the third switching transistor.
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Accused Products
Abstract
A touch-control pixel driving circuit, a touch-control pixel driving method, an array substrate and a liquid crystal display (LCD) device are provided and involve LCD field, the arrangement of additional driving electrodes and sensing electrodes can be avoided, and the manufacturing process can be simplified, and consequently the costs can be reduced. The touch-control pixel driving circuit comprises a pixel electrode (3), a transmissive common electrode (1), a reflective common electrode (2), a gate line (G1), a reset signal line (G2), a reset control line (G3), a read control line (G4), a dual-purpose data line (G5), a first switching transistor (M1), a second switching transistor (M2), an amplifying transistor (T) and a third switching transistor (M3). Of the first switching transistor (M1), a first end is connected to the pixel electrode (3), a second end is connected to the dual-purpose data line (G5), and a control end is connected to the gate line (G1). Of the second switching transistor (M2), a first end is connected to the reflective common electrode (2), a second end is connected to the reset signal line (G2), and a control end is connected to the reset control line (G3). Of the amplifying transistor (T), a first end is connected to the reset signal line (G2) (G2), and a control end is connected to the reflective common electrode (2). Of the third switching transistor (M3), a first end is connected to a second end of the amplifying transistor (T), a second end is connected to the dual-purpose data line (G5), and a control end is connected to the read data line (G4).
18 Citations
1 Claim
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1. A touch-control pixel driving method applied to a touch-control pixel driving circuit, the touch-control pixel driving circuit comprising a pixel electrode, a transmissive common electrode, a reflective common electrode, a gate line, a reset signal line, a reset control line, a read control line, a dual-purpose data line, a first switching transistor, a second switching transistor, an amplifying transistor, a third switching transistor and a coupling capacitor, wherein a first end of the first switching transistor is connected to the pixel electrode;
- a second end of the first switching transistor is connected to the dual-purpose data line;
a control end of the first switching transistor is connected to the gate line;
a first end of the second switching transistor is connected to the reflective common electrode;
a second end of the second switching transistor is connected to the reset signal line;
a control end of the second switching transistor is connected to the reset control line;
a first end of the amplifying transistor is connected to the reset signal line;
a control end of the amplifying transistor is connected to the reflective common electrode;
a first end of the third switching transistor is connected to a second end of the amplifying transistor;
a second end of the third switching transistor is directly connected to the dual-purpose data line;
a control end of the third switching transistor is directly connected to the read control line;
both ends of the coupling capacitor are respectively connected to the reflective common electrode and the reset signal line; and
the amplifying transistor is a P-type transistor,the touch-control pixel driving method comprising; a first stage, in which the gate line provides an ON signal to switch on the first switching transistor;
the dual-purpose data line provides a data signal to the pixel electrode via the first switching transistor;
the reset control line provides an ON signal to switch on the second switching transistor;
the reset signal line provides a common electrode voltage to the reflective common electrode via the second switching transistor; and
the read control line provides an OFF signal to switch off the third switching transistor; anda second stage, in which the gate line provides an OFF signal to switch off the first switching transistor;
the reset control line provides an OFF signal to switch off the second switching transistor;
the read control line provides an ON signal to switch on the third switching transistor; and
when the reflective common electrode detects finger touch, a voltage of the reflective common electrode is reduced in such a way that the amplifying transistor is switched on, and the common electrode voltage provided by the reset signal line is amplified into a touch signal by the amplifying transistor and provided to the dual-purpose data line via the third switching transistor.
- a second end of the first switching transistor is connected to the dual-purpose data line;
Specification
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- Resources
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Current AssigneeBeijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
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Original AssigneeBeijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
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InventorsYang, Shengji
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Primary Examiner(s)Ghebretinsae, Temesghen
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Assistant Examiner(s)Lin, Hang
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Application NumberUS14/344,538Publication NumberTime in Patent Office1,432 DaysField of Search345173, 345 90, 345 92, 349 12US Class CurrentCPC Class CodesG02F 1/13338 Input devices, e.g. touch p...G02F 1/133555 TransflectorsG06F 3/0412 Digitisers structurally int...G06F 3/04184 Synchronisation with the dr...G06F 3/0443 using a single layer of sen...
